WO2005032370A1 - 体内観察装置 - Google Patents
体内観察装置 Download PDFInfo
- Publication number
- WO2005032370A1 WO2005032370A1 PCT/JP2004/014488 JP2004014488W WO2005032370A1 WO 2005032370 A1 WO2005032370 A1 WO 2005032370A1 JP 2004014488 W JP2004014488 W JP 2004014488W WO 2005032370 A1 WO2005032370 A1 WO 2005032370A1
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- WO
- WIPO (PCT)
- Prior art keywords
- observation device
- vivo observation
- balloon
- vivo
- housing
- Prior art date
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/04—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances
- A61B1/041—Capsule endoscopes for imaging
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00002—Operational features of endoscopes
- A61B1/00043—Operational features of endoscopes provided with output arrangements
- A61B1/00045—Display arrangement
- A61B1/00048—Constructional features of the display
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00071—Insertion part of the endoscope body
- A61B1/0008—Insertion part of the endoscope body characterised by distal tip features
- A61B1/00082—Balloons
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00071—Insertion part of the endoscope body
- A61B1/0008—Insertion part of the endoscope body characterised by distal tip features
- A61B1/00089—Hoods
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00071—Insertion part of the endoscope body
- A61B1/0008—Insertion part of the endoscope body characterised by distal tip features
- A61B1/00094—Suction openings
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00071—Insertion part of the endoscope body
- A61B1/0008—Insertion part of the endoscope body characterised by distal tip features
- A61B1/00096—Optical elements
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00071—Insertion part of the endoscope body
- A61B1/0008—Insertion part of the endoscope body characterised by distal tip features
- A61B1/00101—Insertion part of the endoscope body characterised by distal tip features the distal tip features being detachable
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00147—Holding or positioning arrangements
- A61B1/00148—Holding or positioning arrangements using anchoring means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00147—Holding or positioning arrangements
- A61B1/00158—Holding or positioning arrangements using magnetic field
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/48—Other medical applications
- A61B5/4836—Diagnosis combined with treatment in closed-loop systems or methods
- A61B5/4839—Diagnosis combined with treatment in closed-loop systems or methods combined with drug delivery
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6846—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive
- A61B5/6885—Monitoring or controlling sensor contact pressure
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/07—Endoradiosondes
- A61B5/073—Intestinal transmitters
Definitions
- the present invention relates to an in-vivo observation device for observing an affected part such as a superficial disease occurring in a digestive tract or the like.
- IBD Inflammatory Bowel Disease
- ulcerative colitis and Crohn's disease is a gastrointestinal tract disease whose cause has not yet been elucidated, and various treatment and prevention methods are currently being established. It is urgently needed. Symptoms of this inflammatory bowel disease include long-term diarrhea, diarrhea, bloody stool, etc., which can be cured in very rare cases. Is the feature. At present, treatment depends on long-term drug administration.
- inflammatory bowel disease blood stool presence, endoscopy, X-ray examination, and the like are generally performed. It is preferably used because the inside of the digestive tract can be directly confirmed with images.
- ulcerative colitis one of the inflammatory bowel diseases, may become more likely to develop cancer after a certain period of time (eg, 7 years). The progress of symptoms is confirmed by microscopy.
- a capsule-type medical device that is orally injected into a living body is known as a device for easily examining the health condition of a patient.
- Various types of capsule medical devices of this type are provided, for example, one that randomly photographs each part of a living body, one that collects a sample or the like from a living body, and one that releases a drug.
- a capsule-type in-vivo information inspection apparatus capable of detecting in-vivo information such as in-vivo image information is known (for example, see Patent Document 1).
- This capsule-type in-vivo information inspection apparatus is a housing having an optical output port for outputting illumination light into a living body, an imaging port for imaging the inside of a living body, and an in-vivo information sensor for detecting temperature and the like in the living body.
- a battery that supplies power to each part, a white LED that illuminates the inside of the living body through the light output port, a CCD that captures the inside of the living body through the imaging port, a control circuit that controls these, and other components are provided inside the housing.
- a memory for storing the obtained biological information is built-in.
- the white LED also serves as a transmission unit for transmitting each piece of biological information stored in the memory to the outside.
- a support is inserted into the body, and a specific substance and a reactant that causes an optical change are fixed to the support. Then, there is a method using a detecting device for detecting the optical change (for example, Patent Document 2).
- a swallowable capsule includes a camera device and an optical system, transmits an in-vivo video output from the camera device by a transmitter, and receives by a receiver outside the body.
- Patent Document 3 a device in which a swallowable capsule includes a camera device and an optical system, transmits an in-vivo video output from the camera device by a transmitter, and receives by a receiver outside the body.
- the patient swallows the capsule-type in-vivo information inspection apparatus after turning on the power switch.
- the capsule-type in-vivo information inspection device that is orally injected illuminates the inside of the body with white LEDs while moving the internal organs, and images each part with a CCD.
- the captured information is stored in the memory.
- Information obtained by the in-vivo information sensor is also stored in the memory.
- the capsule-type in-vivo information inspection device that detects the biological information of each part in the body, after excretion and collection, retrieves the information stored in the memory via the white LED, and performs analysis, inspection, etc. Is performed.
- Patent Document 1 JP-A-11-225996 (Paragraph No. 0007—0030, FIG. 13)
- Patent Document 2 WOOlZ53792A2
- Patent Document 3 U.S. Patent 5,604, 531
- the present invention has been made in view of such circumstances, and an object of the present invention is to provide an in-vivo observation device capable of observing a diseased part in the digestive tract (particularly in the intestine) without performing bowel washing. It is to provide.
- the present invention provides the following means.
- an in-vivo view including a capsule-shaped casing orally injected into a living body, and an observation device provided in the casing and observing the inside of the living body through an observation wall surface of the casing.
- the present invention provides an in-vivo observation device, which is provided with an adhesion assisting device that brings the observation wall surface into close contact with the living tissue during observation.
- a second invention is characterized in that, in the in-vivo observation device according to the first invention, the adhesion assist device is provided in the housing.
- a third invention is characterized in that, in the in-vivo observation device according to the first invention, the close-contact assisting device is an extracorporeal close-contact assisting device provided with an action generating unit that generates an action on the casing.
- a fourth invention is the in-vivo observation device according to the first invention, wherein the close-contact assisting device includes an extracorporeal force assisting device provided with an action generator that generates an action on the casing. And an actuated part that receives the action generated by the action generating part. And features.
- an adhesion assisting device that makes the observation wall and the living tissue adhere to each other at the time of observation is provided, so that the observation wall is closely attached to the living tissue for observation. This can eliminate poor visibility caused by foreign substances such as body fluids existing in the living body. Therefore, the in-vivo observation device for observing the inside of a living body can secure a favorable observation visual field and perform accurate in-vivo observation.
- a fifth invention is the in-vivo observation device according to the second invention, wherein the adhesion assisting device is installed in the housing, and a fluid such as a bodily fluid or a gas in a living body is observed from the front of the observation wall surface in the observation direction. And a fluid transfer device for sucking out the fluid and flowing it out to the rear, and bringing the fluid into close contact with the observation wall surface with the suction of the fluid by the fluid transfer device.
- the forward force on the observation wall is suctioned and the fluid in the living body is caused to flow backward, so that the tube in front of the observation wall is Negative pressure is generated in the cavity organ, and the living tissue comes into close contact with the observation wall.
- a sixth invention is characterized in that, in the in-vivo observation device according to the fifth invention, the housing includes a tubular member protruding from the observation wall surface in an observation direction. Thereby, the living tissue to be observed can be efficiently and reliably sucked and brought into close contact with the observation wall surface.
- a seventh invention is the in-vivo observation device according to the sixth invention, wherein the tubular member is detachable. Thereby, a cylindrical member having an optimal shape according to the observation conditions can be selected and used.
- An eighth invention is the in-vivo observation device according to the fifth invention, wherein the observation wall surface is provided on a side surface of the housing. As a result, the side living tissue can be easily observed. Further, since the in-vivo observation device can be locked to the living tissue to be observed, accurate observation becomes possible.
- a ninth invention is directed to the in-vivo observation device according to the eighth invention, wherein the projection from the outer peripheral surface of the housing is provided.
- a foreign matter removing device is provided around the observation wall surface. As a result, it is possible to prevent foreign matter from entering the observation range.
- a tenth invention is characterized in that, in the in-vivo observation device according to the fifth invention, an outer diameter expanding device is provided on a side surface of the housing.
- the outer diameter expansion device closes the front and rear of the suction so as to separate the front and rear of the suction, so that the suction of a fluid such as a body fluid can be performed easily and efficiently.
- An eleventh invention is directed to the in-vivo observation device according to the second invention, wherein a force-like capsule that is orally injected into a living body, an observation device provided in the housing to observe the inside of the living body, An optically transparent balloon that is provided in the housing so as to cover the periphery of the observation device and is expandable so as to be in close contact with the living body while moving in the living body; And an expansion device that supplies the air and expands the balloon, wherein the observation device observes the inside of the living body through the balloon.
- the device is orally injected and moves in the digestive tract.
- the expansion device supplies fluid into the balloon to expand the balloon.
- the balloon is brought into close contact with the living body.
- the expansion device may be operated by self-determination, or may be set to operate in response to an external force signal.
- the norane expands while pushing away foreign substances such as body fluids and food debris. Adhere to tissue. Thereafter, when moving in the gastrointestinal tract, the movement is similarly performed while keeping the foreign matter between the balloon and the living tissue removed.
- the observation device can observe the living body in an optimal state without being affected by the foreign matter.
- the expansion device is configured to acquire an in-vivo bodily fluid based on an acquisition unit that acquires the in-vivo bodily fluid. And an expanding portion for expanding the balloon.
- the acquisition unit moves in the living body while acquiring the body fluid.
- the expansion unit expands the balloon when the water content of the bodily fluid acquired by the acquisition unit is, for example, equal to or greater than a predetermined amount. By adjusting the amount of water in the body fluid, the balloon can be expanded at a desired position in the body.
- a thirteenth invention is the in-vivo observation device according to the eleventh invention, wherein the casing includes a pipe connecting the outside and the inside of the balloon, and the expansion device is connected to the pipe.
- a pump that intervenes to supply an external force fluid into the balloon or discharge a fluid from the inside to the outside to expand or contract the balloon, and a control unit that controls the operation of the pump. I do.
- the control unit operates the pump to supply the external fluid to the inside of the balloon to expand the balloon, or to inflate the fluid from inside the balloon.
- the balloon can be deflated by being discharged outside the body.
- the configuration can be simplified and the size can be reduced.
- a fourteenth invention is the in-vivo observation device according to the eleventh invention, wherein the housing is provided with another balloon, and the interior of the balloon and the interior of the other balloon are respectively connected to the housing.
- the control unit operates the pump to supply another balloon fluid to the inside of the balloon to expand the balloon, or to transmit the balloon internal fluid to another balloon. To deflate the balloon.
- the operation of the pump causes the fluid to flow between the two balloons to expand and contract the balloon, there is no need to exchange the fluid. Therefore, it is possible to prevent foreign substances from being mixed into the fluid, and it is possible to maintain an optimal field of view of the observation device.
- a fifteenth invention is the in-vivo observation device according to the eleventh invention, wherein the balloon is provided with a reverse running prevention device having a projection protruding rearward in the traveling direction on an outer surface. Sign.
- the reverse running prevention device is also in contact with the living body such as the digestive tract when moving in the living body while keeping the balloon in close contact.
- the protruding portion protrudes rearward in the traveling direction, if the vehicle runs backward in the digestive tract, the protruding portion is locked to the living body to prevent reverse running. Therefore, it is possible to perform appropriate observation by reliably moving in the predetermined traveling direction.
- a sixteenth invention is directed to the in-vivo observation device according to the eleventh invention, wherein the balloon has an electrode on an outer surface, and has a power supply unit for supplying power to the electrode in the housing.
- the power supply unit supplies electric power to the electrodes to flow a current through the living body while moving inside the living body while keeping the balloon in close contact.
- a living body receives a current stimulus from an electrode, it contracts and presses the norane.
- the balloon receives the external force from the living body, so that the propulsion in the traveling direction is promoted or the balloon is sent backward in the traveling direction. Therefore, it is possible to easily and reliably perform the adjustment of the movement, such as when the patient wants to reach the affected part quickly or performs observation for a longer time, by the current stimulation.
- a seventeenth invention is directed to the in-vivo observation device according to the eleventh invention, wherein the fluid is an optically transparent liquid drug, and the balloon is spread on the balloon at a pressure equal to or higher than a predetermined value.
- the fluid is an optically transparent liquid drug
- the balloon is spread on the balloon at a pressure equal to or higher than a predetermined value.
- a micro-hole for discharging the medicine to the outside of the balloon when the medicine is stretched, and a pressure-increasing device for increasing the pressure in the balloon to a pressure equal to or higher than the predetermined value at the time of releasing the expanding device force medicine. I do.
- the pressure increasing device increases the pressure in the balloon to a predetermined value or more when the medicine is discharged upon receiving the observation result of the observation device or a signal indicating an extracorporeal force.
- the microporous force medicine of the balloon is discharged to the outside.
- the release of the drug can be stopped by the pressure increasing device reducing the pressure in the norain.
- An eighteenth invention is directed to the in-vivo observation device according to the eleventh invention, wherein the fluid is an optically transparent liquid drug, and the casing is connected to the outside and inside of the balloon. And an on-off valve capable of opening and closing the conduit to release the medicine in the balloon to the outside, and an on-off valve control unit for controlling the operation of the on-off valve.
- the on-off valve control unit operates the on-off valve so that the pipe is opened when the medicine is released upon receiving the observation result of the observation apparatus or a signal from outside the living body. Move. Thereby, the medicine in the balloon is released to the outside of the housing via the conduit. In addition, the release of the drug can be stopped by the on-off valve control unit closing the on-off valve. In this way, the medicine can be reliably administered at the desired position of the affected part by opening and closing the on-off valve. In addition, since the fluid for expanding the balloon can be used as a medicine, it is possible to reduce the size without having to separately provide a medicine storage section or the like in the housing.
- a nineteenth invention is directed to the in-vivo observation device according to the eleventh invention, wherein the housing includes a medicine storage section for storing a medicine, a pipe connecting the medicine storage section to the outside of the balloon, It is characterized by comprising a discharge device for discharging the medicine stored in the medicine storage portion through the conduit to the outside of the balloon, and a control portion for operating the discharge device.
- the control unit when the medicine is released upon receiving the observation result of the observation device or the signal of the extracorporeal force, the control unit operates the release device to store the medicine stored in the medicine storage unit. Is released out of the balloon via a conduit. In this way, the release device can reliably administer the medicine at the desired position of the affected area.
- the fluid is discharged into the balloon when the pressure in the balloon reaches a predetermined value or more.
- a discharge device wherein the fluid is an optically transparent medicine, and the control unit operates the pump so that a pressure in the balloon becomes equal to or higher than the predetermined value when the medicine is discharged.
- control unit operates the pump so as to increase the pressure in the balloon to a predetermined value or more when the medicine is discharged upon receiving the observation result of the observation device or a signal indicating an extracorporeal force. Control. This allows the release device to move The drug can be released to the part.
- the casing further includes another balloon having an electrode on an outer surface and accommodating the medicine therein, A power supply unit for supplying power to the electrode; and a conduit communicating the inside of the balloon and the other balloon, wherein the power supply unit supplies power to the electrode at the time of drug release.
- the power supply unit supplies electric power to the electrodes to flow a current into the living body when the medicine is discharged upon receiving the observation result of the observation apparatus or a signal indicating an extracorporeal force.
- the living body contracts in response to the current stimulus, and presses the other balloon from the outside.
- the medicine contained in the other balloon moves into the balloon via the conduit.
- the pressure inside the balloon rises above a predetermined value, and the medicine is ejected from the micropores.
- the medication can be performed by effectively using the external force received by the living body, so that power can be saved at the time of medication and efficient medication can be performed.
- a twenty-second invention is the in-vivo observation device according to the eleventh invention, wherein the refractive index of the balloon is substantially equal to or lower than the refractive index of the fluid.
- the refractive index of the fluid is higher than or equal to the refractive index of the balloon. Reflection into the balloon hardly occurs at the boundary surface with the air. Therefore
- a twenty-third invention is the in-vivo observation device according to the second invention, wherein the adhesion assisting device is a specific gravity difference in which the specific gravity of the entire device is set to be larger than the specific gravity of the fluid existing in a living body. It is characterized by the following. Thereby, the in-vivo observation device having a specific gravity higher than the fluid can be submerged in the body fluid and brought into close contact with the living tissue.
- a twenty-fourth invention is characterized in that, in the in-vivo observation device of the twenty-third invention, a center of gravity is eccentric to the observation wall surface side. As a result, the observation wall faced downward due to gravity can be securely brought into close contact with the living tissue.
- a twenty-fifth invention is directed to the in-vivo observation device according to the third invention, wherein the action generating section is attached to a living body. It is a pressing portion for pressing, wherein a grip portion for a pressing operation is provided on the extracorporeal adhesion assisting device. This improves the workability of the pressing operation for applying pressure from outside the body to bring the housing into close contact with the living tissue.
- a transmission device for transmitting data is provided in the housing, and a display unit that displays the data transmitted from the transmission device on the pressing unit. Is provided.
- the user can operate while confirming the compression degree by looking at the image displayed on the display unit.
- a twenty-seventh invention is characterized in that, in the in-vivo observation device according to the twenty-fifth invention, a position detection device for detecting a position of the housing is provided in the extracorporeal contact assistance device.
- the pressing operation can be performed while reliably grasping the housing position.
- a permanent magnet for electromagnetic attraction and a power receiving antenna are provided in the housing, and the coil for magnetic absorption bow I and the power feeding antenna are provided in the pressing portion.
- An antenna is provided.
- the power receiving antenna is arranged between the SN poles considering the orientation of the magnetic poles, that is, the arrangement of the magnetic poles (S pole and N pole) attracting each other, the power generation efficiency can be directly opposed to the power feeding antenna. Can be increased.
- a twenty-ninth aspect is the in-vivo observation device according to the fourth aspect, wherein the action generating section is a magnetic field generating apparatus, and the operated section is a permanent magnet or a ferromagnetic material.
- the housing can be magnetically attracted by the electromagnet and brought into close contact with the living tissue.
- the electromagnet can be turned on and off as necessary.
- a transmission device for transmitting data is provided in the housing, and a display unit that displays the data transmitted from the transmission device on the pressing unit. Is provided.
- the user can operate while confirming the compression degree by looking at the image displayed on the display unit.
- a thirty-first invention is directed to the in-vivo observation device according to the twenty-ninth invention, wherein the extracorporeal contact assistance device is provided.
- a position detecting device for detecting the position of the housing.
- a permanent magnet for electromagnetic attraction and a power receiving antenna are provided in the housing, and the magnetic absorption bow I coil and the power feeding antenna are provided in the pressing portion.
- An antenna is provided. This achieves the same effect as the twenty-eighth invention.
- a thirty-third invention is characterized in that, in the in-vivo observation device according to the first invention, a dosing device is provided which administers a medicine to a desired site in a state where the casing-side force is in close contact with a living tissue. This allows accurate dosing of the living tissue at the target site.
- the medicine is soaked in the sponge-like medicine storage / transport member.
- pressure is applied to the drug storage / delivery member in close contact with the biological tissue at a desired position, the drug is extruded and applied to the living tissue of the affected area.
- a plurality of fine needles are provided on the medicine storage / transport member.
- the needle is pierced into the living tissue by close contact and pressure is applied to the drug storage / delivery member, the drug is pushed out and injected directly into the living tissue of the affected part.
- Drug storage The drug-soaked gel-like substance is stored in the transport device. When this substance is released and adheres to the living tissue of the affected area, it can stay in the affected area for a long period of time and gradually release and administer the drug.
- Drug storage “Guiding the drug stored in the transport device to the surface by electrophoresis allows the drug to be applied to living tissue in close contact over a long period of time and over a wide range.
- Drug storage The drug stored in the delivery device is atomized by a spray device and then released, whereby it can be administered over a wide range of biological tissue.
- the atomized drug if it is compressed and extruded, it can be dispensed over a wider range by pressurized release, and is particularly suitable for dispensing long organs such as the intestine.
- the foreign matter around the affected part may be removed by using the foreign matter removing device, and the visual field of the above-described observation system may be secured.
- a thirty-fourth invention is directed to a step of introducing the in-vivo observation device into the subject, a step of recognizing a position in the body, a step of bringing the in-vivo observation device into close contact with the body wall based on the recognized position, And a step of obtaining an image of the contact portion.
- the step of recognizing a position in the body is performed by using an image acquired by the in-vivo observation device.
- the step of recognizing a position in the body is performed by using a timer installed in the in-vivo observation device.
- a thirty-seventh invention is characterized in that, in the thirty-fourth invention, the step of recognizing a position in the body is performed based on position information of the in-vivo observation device.
- the step of bringing the in-vivo observation device into close contact with the body wall sucks a fluid such as body fluid or gas in the living body from the front in the observation direction of the in-vivo observation device and flows backward. It is characterized in that it is brought into close contact with a fluid transfer device to be brought into contact.
- the step of bringing the in-vivo observation device into close contact with the inner wall supplies the fluid to an optically transparent balloon provided in the observation section of the in-vivo observation device. It is characterized in that the balloon is brought into close contact with the body wall by expanding the balloon.
- a fortieth invention is characterized in that, in the thirty-fourth invention, the step of bringing the in-vivo observation device into close contact with the inner wall is a step of applying pressure to a portion where the in-vivo observation device is located from outside the body. .
- the step of bringing the in-vivo observation device into close contact with the inner wall generates a magnetic field outside the body, and the magnet or the ferromagnetic substance installed inside the in-vivo observation device is provided. It is characterized in that it is brought into close contact by sucking.
- a forty-second invention is directed to a step of introducing the in-vivo observation device into the subject, a step of recognizing a position in the body, a step of bringing the in-vivo observation device into close contact with the body wall based on the recognized position, and a step of Acquiring the image and confirming the acquired image And then releasing the drug.
- a forty-third invention is characterized in that, in the forty-second invention, the step of recognizing a position in the body is performed by using an image acquired by the in-vivo observation device.
- Forty-fourth invention is characterized in that, in the thirty-fourth invention, the step of recognizing a position in the body is performed by using a timer installed in the in-vivo observation device.
- the step of recognizing a position in a body is performed based on position information of the in-vivo observation device.
- the step of bringing the in-vivo observation device into close contact with the inner wall draws a fluid such as a body fluid or gas in the living body from the front in the observation direction of the in-vivo observation device and flows backward. It is characterized in that it is brought into close contact with a fluid transfer device to be brought into contact.
- the step of bringing the in-vivo observation device into close contact with the inner wall supplies the fluid to an optically transparent balloon provided in the observation section of the in-vivo observation device. It is characterized in that the balloon is brought into close contact with the body wall by expanding the balloon.
- a forty-eighth invention is characterized in that, in the forty-second invention, the step of bringing the in-vivo observation device into close contact with the inner wall is a step of applying pressure to a portion where the in-vivo observation device is located from outside the body. .
- the step of bringing the in-vivo observation device into close contact with the inner wall generates a magnetic field outside the body, and a magnet or a magnet installed inside the in-vivo observation device is provided. It is characterized in that the ferromagnetic material is brought into close contact by suction.
- the balloon can be expanded and brought into close contact with the living tissue, and the living tissue can be observed through the balloon.
- the condition of the tissue can be observed.
- the in-vivo observation device of the present invention since the living tissue can be observed in a state in which the observation wall surface and the living tissue are in close contact with each other by the adhesion assisting device, the intestine can be cleaned without performing intestinal washing. Observing the state of living tissue reliably without fluids such as body fluids and gases obstructing the field of view Can do. In particular, in the case of inflammatory bowel disease, it is possible to reliably observe the condition in the digestive tract including the affected part while preventing the symptoms caused by bowel washing.
- FIG. 1 is a cross-sectional view showing a first embodiment of the in-vivo observation device according to the present invention.
- FIG. 2 is a cross-sectional view of the in-vivo observation device showing a state where the balloon of the in-vivo observation device shown in FIG.
- FIG. 3 is a cross-sectional view showing a second embodiment of the in-vivo observation device according to the present invention, showing a state in which the balloon is expanded and closely attached to a living tissue.
- FIG. 4 is a cross-sectional view showing a third embodiment of the in-vivo observation device according to the present invention, showing a state in which the balloon is expanded and closely attached to a living tissue.
- FIG. 5 is a cross-sectional view showing a fourth embodiment of the in-vivo observation device according to the present invention, showing a state in which the balloon is expanded and closely attached to a living tissue.
- FIG. 6 is a cross-sectional view showing a state in which another balloon of the in-vivo observation device shown in FIG.
- FIG. 7 is a side view showing a fifth embodiment of the in-vivo observation device according to the present invention, showing a state in which the balloon is expanded.
- FIG. 8 is a cross-sectional view showing a sixth embodiment of the in-vivo observation device according to the present invention, showing a state in which the balloon is expanded and closely attached to a living tissue.
- FIG. 9 is a cross-sectional view showing a seventh embodiment of the in-vivo observation device according to the present invention, showing a state in which the balloon is expanded to be in close contact with living tissue, and a drug is being administered. It is.
- FIG. 10 is a cross-sectional view showing an eighth embodiment of the in-vivo observation device according to the present invention, showing a state where the balloon is expanded and brought into close contact with living tissue, and a drug is being administered. is there.
- FIG. 11 is a cross-sectional view showing a ninth embodiment of the in-vivo observation device according to the present invention, showing a state in which the balloon is expanded and brought into close contact with living tissue, and a drug is being administered. is there.
- FIG. 12 is a sectional view showing a tenth embodiment of the in-vivo observation device according to the present invention.
- FIG. 4 is a diagram showing a state in which the nolan is expanded and brought into close contact with a living tissue, and a drug is being administered.
- FIG. 13 is a cross-sectional view showing an eleventh embodiment of the in-vivo observation device according to the present invention.
- FIG. 14 is a cross-sectional view showing another example of the in-vivo observation device according to the present invention, showing a state where the balloon is expanded and brought into close contact with living tissue.
- FIG. 15 is a cross-sectional view showing still another example of the in-vivo observation device according to the present invention, showing a state where the balloon is expanded and brought into close contact with living tissue.
- FIG. 16 is a sectional view showing a twelfth embodiment of the in-vivo observation device according to the present invention.
- FIG. 17 is an explanatory view of the operation of the in-vivo observation device shown in FIG. 16, in which FIG. 17A shows a state in which the pump body has started operating in the normal rotation direction, FIG. 17C shows a state in which the living tissue is sucked and brought into close contact with each other, and FIG. 17D shows a state in which the pump body is operated in the reverse direction.
- FIG. 18 is a sectional view showing a modification of the twelfth embodiment shown in FIG.
- FIG. 19 is a sectional view showing a thirteenth embodiment of the in-vivo observation device according to the present invention.
- FIG. 20 is a sectional view showing a modification of the thirteenth embodiment shown in FIG.
- FIG. 21 is a cross-sectional view showing a fourteenth embodiment of the in-vivo observation device according to the present invention.
- FIG. 22 is a sectional view showing a modification of the fourteenth embodiment shown in FIG. 21.
- FIG. 23 is a sectional view showing a fifteenth embodiment of the in-vivo observation device according to the present invention.
- FIG. 24 is a sectional view showing a sixteenth embodiment of the in-vivo observation device according to the present invention.
- FIG. 25 is an enlarged sectional view of a main part showing a modification of the sixteenth embodiment shown in FIG.
- FIG. 26 is a side view showing a seventeenth embodiment of the in-vivo observation device according to the present invention.
- FIG. 27 is a view showing a modification of the seventeenth embodiment shown in FIG. 26,
- FIG. 27A is a perspective view showing a state in which a compression device is used, and
- FIG. 27B is a configuration example of the compression device.
- FIG. 28 is a sectional view showing a first modification of the compression device.
- FIG. 29 is a view showing a second modification of the compression device.
- FIG. 29A is a sectional view
- FIG. 29B is an enlarged sectional view of a main part.
- FIG. 30 is a sectional view showing a third modification of the compression device.
- FIG. 31 is a cross-sectional view showing a configuration example of a drug administration device as an eighteenth embodiment of the in-vivo observation device according to the present invention.
- FIG. 32 is a cross-sectional view showing a first modified example of the administration device shown in the eighteenth embodiment of FIG. 31.
- FIG. 33 is a cross-sectional view showing a second modified example of the administration device shown in the eighteenth embodiment of FIG. 31.
- FIG. 34 is a cross-sectional view showing a third modified example of the administration device shown in the eighteenth embodiment of FIG. 31.
- FIG. 35 is a cross-sectional view showing a fourth modification of the administration device shown in the eighteenth embodiment of FIG. 31.
- FIG. 36 is a cross-sectional view showing a fifth modification of the dispensing device shown in the eighteenth embodiment in FIG. 31.
- FIG. 37 is a cross-sectional view showing a sixth modified example of the administration device shown in the eighteenth embodiment of FIG. 31.
- FIG. 38 is a cross-sectional view showing a seventh modification of the dispensing device shown in the eighteenth embodiment in FIG. 31.
- FIG. 39 is a cross-sectional view showing an eighth modification of the dispensing device shown in the eighteenth embodiment of FIG. 31.
- an in-vivo observation device 1 of the present embodiment is provided with a capsule-shaped housing 2 orally injected into a body (in a living body), and is provided in the housing 2 to observe the inside of the body.
- An observation system (observation device) 3 and an optically transparent member that is provided in the housing 2 so as to cover the periphery of the observation system 3 and that can be expanded so as to be in close contact with living tissue while moving inside the body.
- Balloon 4 and the An expansion device 5 for supplying a fluid into the balloon 4 to expand the balloon 4 is provided.
- the refractive index n of the transparent material of the balloon 4 is the refractive index of the fluid supplied into the balloon 4.
- the housing 2 is formed so as to hermetically seal the inside with plastic or the like, and is provided with a transparent power bar 2a at one end. Inside the transparent cover 2a, an objective lens 10 for imaging each part in the body is arranged, and at an image forming position of the objective lens 10, an imaging element 11 such as a CMOS imager is arranged. ing. An LED 12 that irradiates illumination light to illuminate the field of view of the objective lens 10 is provided around the objective lens 10. That is, the objective lens 10, the imaging device 11, and the LED 12 constitute the observation system 3.
- the above-mentioned norain 4 is formed of an elastic and stretchable material such as rubber, and has an end mounted around the housing 2 so as to cover the entire transparent cover 2a. That is, the observation system 3 is arranged so as to cover the viewing angle of the objective lens 10, and the observation system 3 observes the inside of the body via the balloon 4 (through the balloon 4).
- the housing 2 has a fluid supply hole 2b for supplying the fluid from the storage portion 13 for storing the fluid disposed in the housing 2 to the inside of the balloon 4 around the axis of the housing 2. Are formed.
- the fluid supply hole 2b is connected to the storage section 13 by a pipe (not shown).
- the storage section 13 is provided with an on-off valve 14, and by opening and closing the on-off valve 14, the fluid stored therein can be supplied into the drain 4 through a pipe. I have. That is, the storage unit 13 and the on-off valve 14 constitute the above-described expansion device 5.
- a control unit 15 for controlling the observation system 3 a memory 16 for recording an image obtained by the observation system 3, and a memory 16 based on the image obtained by the observation system 3 And a predetermined portion, for example, whether it has reached the intestine or not, and a battery 18 for supplying power to each of the above-described components.
- the judging unit 17 has a function of transmitting the fact to the control unit 15 when judging that the intestine has been reached. In response to this, the control unit 15 operates the on-off valve 14 and records the captured image acquired by the observation system 3 in the memory 16.
- Rune 4 is set to be expanded for detailed observation.
- the in-vivo observation device 1 orally injected into a patient (not shown) moves in the body along the digestive tract.
- the control unit 15 operates the observation system 3 so as to image the inside of the body.
- the determining unit 17 confirms, for example, a fold-like tissue peculiar to the intestine in the captured image based on the captured image captured by the observation system 3. It is determined that the intestine has reached the intestine.
- the determining unit 17 determines that it has reached the intestine, it notifies the control unit 15 to that effect.
- the control unit 15 receives this and activates the on-off valve 14, and performs control to record the image captured by the observation system 3 in the memory 16.
- the on-off valve 14 that has received the signal from the control unit 15 opens the conduit and supplies the fluid stored in the storage unit 13 to the balloon 4 via the fluid supply hole 2b.
- the balloon 4 expands and comes into close contact with the living tissue, as shown in FIG.
- the balloon 4 expands while pushing away these foreign substances due to the pressure at the time of expansion. Closely adheres to living tissue after removal.
- the observation system 3 can observe the living tissue in an optimal state without being affected by foreign substances in the body, and record a clear captured image in the memory 16. Can be.
- the nolane 4 expands when expanded, the density is greatly reduced, and the transparent state is obtained, so that the observation system 3 can obtain a clearer captured image.
- the observation system 3 is moved over the intestine because the foreign body between the balloon 4 and the living tissue is moved while being kept removed. Observations can be made.
- the refractive index of the balloon 4 is compared with the refractive index of the fluid, the refractive index of the fluid is higher or equal, so that the reflection into the balloon 4 at the boundary surface between the balloon 4 and the fluid is less likely to occur. , Good observation is possible.
- the balloon 4 is expanded in the intestine to closely contact the living tissue. Since the living tissue can be observed through the balloon 4 after being worn, the state of the living tissue can be reliably observed without being affected by foreign matter without performing intestinal washing or the like in the intestine. In particular, when the patient has a disease such as inflammatory bowel disease, the condition in the intestine can be reliably observed while preventing deterioration of symptoms due to bowel washing. In addition, since it is possible to perform observations over the entire length of the intestine, it is necessary to ensure that observations can be made even at locations where conventional endoscopy has made it difficult to perform observations, for example, at positions sufficiently distant from the anus. Can be.
- the force of expanding balloon 4 when it reaches the intestine is not limited to this, and it is sufficient that the balloon can be expanded at a desired position.
- the determining unit 17 determines whether or not the force reaches the intestine based on the image captured by the observation system 3 and expands the balloon 4 according to the determination.
- the present invention is not limited to this.For example, the position of the in-vivo observation device 1 is confirmed outside the living body, a signal is sent when the position reaches a desired position, and when the signal is received, the expansion device expands the balloon 4. It may be configured. Further, at this time, the control unit 15 may be set to operate the observation system 3 when receiving the signal. By doing so, the observation system 3 can be operated only at the position where observation is desired, so that power saving can be achieved. A timer may be provided as a trigger to expand the balloon.
- the difference between the second embodiment and the first embodiment is that, in the first embodiment, when expanding the balloon 4, the expansion device 5 supplies the fluid A stored in the storage portion 13 into the balloon 4.
- the in-vivo observation device 20 of the second embodiment expands the balloon 4 by using the body fluid in the body.
- the extension device 21 acquires the body fluid in the body, and the water content of the body fluid acquired by the acquisition unit 22 Based on the above, an expansion tank (expansion part) 23 for expanding the balloon 4 is provided.
- the expansion tank 23 has one end connected to the fluid supply hole 2 b and the other end connected to a pipe 24 communicating with the outside of the housing 2.
- the conduit 24 is filled with a polymer gel 25, which absorbs water from the body fluid gradually and supplies the overflowing water to the expansion tank 23 when the saturated amount is reached. . That is, the pipeline 24 and the polymer gel 25 constitute the above-mentioned acquisition section 22. It should be noted that the polymer gel 24 solidifies after a predetermined time has elapsed after the amount of water reaches the saturated amount, and does not acquire any more water.
- the expansion tank 23 contains therein a foaming agent such as granular carbonic acid that reacts with moisture, and generates gas (fluid) such as carbon dioxide gas by the moisture supplied from the polymer gel 24.
- a foaming agent such as granular carbonic acid that reacts with moisture, and generates gas (fluid) such as carbon dioxide gas by the moisture supplied from the polymer gel 24.
- the generated gas is supplied into the balloon 4 through the fluid supply hole 2b.
- the amount and density of the polymer gel 24 are adjusted so that water is supplied to the expansion tank 23 when it reaches the intestine.
- the balloon 4 can be expanded by generating a gas (fluid) such as carbon dioxide gas by using the moisture of the bodily fluid. There is no need to have it. Therefore, the size of the housing 2 can be reduced. In addition, the amount of water that saturates can be easily adjusted by adjusting the amount, density, and the like of the polymer gel 24, and the norane 4 can be reliably expanded at a desired position in the body.
- a gas such as carbon dioxide gas
- the high molecular gel 24 is adjusted so that the balloon 4 is expanded when the balloon 4 reaches the intestine.
- the high molecular gel 24 is not limited to the intestine but may be located at a desired position.
- the polymer gel 24 should be adjusted so that the balloon 4 is expanded.
- the in-vivo observation device 30 of the third embodiment is that the balloon 4 is expanded using air (fluid) in the body. That is, as shown in FIG. 4, the in-vivo observation device 30 of the present embodiment includes a pipe 31 connecting the outside and the inside of the balloon 4 inside the housing 2, and the expansion device 32 The balloon 4 is provided with a pump 33 for supplying air from the outside, that is, the inside of the balloon 4 or discharging the air into the balloon 4 to expand or contract the balloon 4 through the passage 31.
- conduit 31 One end of the conduit 31 is connected to the fluid supply hole 2b, and the other end is connected to a fluid intake 2c provided in the housing 2.
- the control unit 15 activates the pump 33 in response to the determination unit 17 that the intestine has been reached.
- the pump 33 can take in air from the body through the fluid intake port 2c and supply the air into the balloon 4 through the fluid supply hole 2b to expand the balloon 4.
- the size of the housing 2 can be further reduced.
- the balloon 33 can be deflated by operating the pump 33 once to discharge air from the inside of the balloon 4, and then the balloon 4 can be expanded again as needed to perform the observation. Can be.
- the balloon 4 can be expanded only at the position where observation is desired, the balloon 4 can be moved smoothly in the body, and efficient observation can be performed.
- a filter or the like is provided in the middle of the pipe line 31 to supply foreign matter to the balloon 4 with a fluid such as air that removes foreign substances and increases transparency.
- air may be taken in from the body, and the hydraulic fluid obtained by expanding the balloon 4 may be taken in so as to expand the noren 4.
- the difference between the fourth embodiment and the first embodiment is that, in the first embodiment, a balloon 4 is arranged on one end side of the housing 2 and the expansion device 5 is accommodated in the storage unit when the normal 4 is expanded. While the fluid stored in 13 is supplied into the balloon 4, the in-vivo observation device 40 of the fourth embodiment has another balloon 41 at the other end of the housing 2 in addition to the balloon 4. Is arranged The point is that the fluid moves between runes 4 and 41.
- the in-vivo observation device 40 of the present embodiment includes the other balloon 41 in the housing 2 and the inside of the balloons 4 and 41 in the housing 2.
- the pipes 42 communicate with each other.
- the expansion device 43 has a pump 44 interposed in the conduit 42 to supply a fluid to both the balloons 4 and 41 mutually.
- the other balloon 41 is formed of a stretchable natural material such as rubber, and is attached to the periphery of the housing 2 so as to be located on the opposite side of the balloon 4.
- the control unit 15 receives the notification from the determination unit 17 that the intestine has reached the intestine, and operates the on-off valve 14 to transmit the fluid A from the storage unit 13 to the balloon 4. And expanded so as to closely adhere to the living tissue.
- the balloon 4 is once deflated until the next observation is reached. That is, the control unit 15 operates the pump 44 to supply the fluid in the balloon 4 to another balloon 41 via the conduit 42.
- the pump 44 is operated again to supply the internal fluid of the other balloon 41 into the balloon 4, thereby expanding the balloon.
- the balloon 4 can be expanded and deflated, so that there is no need to exchange fluid. Therefore, it is possible to prevent foreign substances from being mixed into the fluid, and to maintain the view of the observation system 3 in an optimal state (clear view).
- the force of supplying the fluid stored in the storage section 13 to the balloon 4 to expand the balloon 4 is not limited thereto.
- the balloon 41 may be orally injected into the body in a state in which a volume of the fluid filling the balloon 4 is supplied in advance.
- the difference between the fifth embodiment and the first embodiment is that in the first embodiment, when moving in the body, the body simply moves by peristalsis, for example, whereas the in-vivo observation device of the fifth embodiment Reference numeral 50 denotes a point in which the direction of movement in the body is regulated by the reverse movement prevention device 51 provided on the balloon 4.
- the in-vivo observation device 50 of the present embodiment includes the above-described reverse running prevention device 51 in which the balloon 4 has a projection 52 protruding rearward in the traveling direction on the outer surface.
- the reverse running prevention device 51 is formed of an elastic material like the balloon 4 and has higher rigidity than the balloon 4. Further, a plurality of the reverse running prevention devices 51 are provided around the axis of the balloon 4 at positions outside the visual field range of the observation system 3.
- the reverse running prevention device 51 when the balloon 4 is expanded and adhered to the living tissue, the reverse running prevention device 51 also comes into close contact with the living tissue.
- a force is generated to push the in-vivo observation device 50 backward, but even in such a case, the projection 52 is engaged so as to be caught by the living tissue. Stop to prevent reverse running. Therefore, it can be reliably moved in the predetermined traveling direction, and appropriate observation can be performed.
- the difference between the sixth embodiment and the fourth embodiment is that, in the fourth embodiment, when moving inside the body, it simply moves by peristalsis, for example.
- the device 60 is capable of controlling movement in the body.
- the balloon 4 and the other balloon 41 have the electrode 61 on the outer surface and the electrode 61 in the housing 2.
- the power supply unit 62 for supplying power is provided.
- the plurality of electrodes 61 are provided around the axis of the balloon 4 at positions outside the visual field range of the observation system 3.
- the control unit 15 supplies electric power to the electrodes 61 disposed on the expanded balloons 4 and 41.
- the power supply unit 62 is controlled to supply the power.
- the control unit 15 activates the power supply unit 62 to supply power to the electrode 61 and flow current to the living tissue. Then, the biological tissue contracts upon being stimulated by the electric current. In particular, it contracts around the living tissue around the electrode.
- the balloon 4 also receives an external force due to the contraction of the living tissue, and moves backward in the traveling direction by the external force. That is, it moves in the direction opposite to the direction of movement in the body (for example, the direction of peristalsis). Therefore, it is possible to stay at the same position, to perform observation for a long time, and to perform more detailed observation.
- the other balloon 41 when the other balloon 41 is expanded, power is supplied to the electrode 61 to stimulate the living tissue with an electric current, thereby facilitating the movement in the moving direction in the body, and observation is required. It is possible to reach the affected part faster by increasing the movement speed of the part not to be affected.
- the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.
- the difference between the seventh embodiment and the first embodiment is that, in the first embodiment, In contrast to the observation of the living tissue including the diseased part, the in-vivo observation device 70 of the seventh embodiment is capable of administering medication to the diseased part in addition to the observation.
- the in-vivo observation device 70 of the present embodiment when the fluid is an optically transparent liquid drug, and when the balloon 4 is inflated to a balloon 4 with a pressure equal to or higher than a predetermined value, a microhole 4a for discharging the medicine to the outside of the balloon 4 is provided, and the expansion device 5 has a pressure increasing device 71 for increasing the pressure in the balloon 4 to a pressure equal to or higher than a predetermined value when releasing the medicine. .
- the plurality of micropores 4a are provided over the entire outer surface of the balloon 4.
- the micropores 4a are closed by the elasticity of the balloon 4 until the balloon 4 reaches a pressure equal to or higher than the predetermined value, so that the medicine is not discharged to the outside.
- the pressure raising device 71 detects the pressure in the balloon 4 by a pressure sensor (not shown), and operates the on-off valve 14 to release the drug as a fluid from the storage portion 13 into the balloon 4 when the drug is discharged. Supply.
- the determination unit 17 determines whether or not the diseased part needs to be administered based on the image captured by the observation system 3.
- the judging unit 17 makes the observation system 3 Based on the captured image, it is determined that the affected area requires medication.For example, if red is detected from the captured image and it is larger than the threshold, it is determined that the site is a bleeding site that requires medication. To the pressure riser 71. In response to this, the pressure increasing device 71 further supplies a medicine into the balloon 4 to expand the balloon 4. At this time, the pressure increasing device 71 monitors the pressure in the balloon 4 with a pressure sensor, and when the pressure in the balloon 4 reaches a predetermined value or more, closes the on-off valve 14 and stops the expansion of the balloon 4. I do.
- the balloon 4 expanded to a predetermined value or more by the pressure raising device 71 is in a state in which the micro holes 4a are opened, so that the medicine in the balloon 4 is discharged from the micro holes 4a to the outside.
- the discharged medicine acts directly on the affected part without being affected by foreign substances such as body fluids.
- the pressure-increasing device 71 can release the medicine at a desired position, and can surely administer the medicine to the affected part without being affected by the foreign matter.
- the fluid that expands the balloon 4 is used as a drug, There is no need to provide a separate storage section for the medicine in the housing 2, and the size can be reduced.
- whether or not to administer the medicine is determined by the determination unit 17, but the present invention is not limited to this.
- an image captured by the observation system 3 outside the living body is monitored, A signal may be sent when it is determined that medication is necessary based on the pressure, and the pressure increasing device 71 may increase the pressure in the balloon 4 in response to the signal!
- the difference between the eighth embodiment and the seventh embodiment is that in the seventh embodiment, the medicine is ejected through the micro holes 4a provided in the balloon 4, whereas the in-vivo observation device according to the eighth embodiment is different from the eighth embodiment.
- the device 80 is characterized in that the internal force of the balloon 4 is also discharged to the outside of the balloon 4 via the conduit 81.
- the in-vivo observation device 80 includes the above-mentioned conduit 81 connecting the outside and the inside of the balun 4 inside the casing 2, and the conduit 81 can be opened and closed. And an on-off valve 82 for releasing the medicine in the balloon 4 to the outside.
- control unit 15 operates the on-off valve 82 when the determination unit 17 determines that the diseased part needs to be administered based on the image captured by the observation system 3. I'm familiar. That is, the control unit 15 has a function of an on-off valve control unit that controls the operation of the on-off valve.
- the control unit 15 When the determination unit 17 determines that the diseased part needs to be administered based on the image captured by the observation system 3, the control unit 15 The on-off valve 82 is operated to open the pipeline 81. As a result, the drug in the balloon 4 is released to the outside of the balloon 4 through the conduit 81. In addition, by closing the on-off valve 82, the release of the drug can be stopped. In this manner, the administration can be reliably performed at a desired position by opening and closing the on-off valve 82. In addition, since the fluid for expanding the balloon 4 is used as a medicine, there is no need to provide a separate storage section for the medicine in the housing 2, and the size can be reduced. In particular, the drug is released via line 82 rather than via the balloon 4 At the time of the release, the observation of the observation system 3 is not affected. Therefore, the observability is not reduced.
- whether or not to administer is determined by the determination unit 17, but is not limited to this.
- an image is captured outside the living body by the observation system 3.
- An image may be monitored and a signal may be sent when it is determined that medication is necessary based on the image, and the on / off valve 82 may be operated upon receiving the signal.
- the difference between the ninth embodiment and the seventh embodiment is that, in the seventh embodiment, the medicine inside the balloon 4 is ejected by the minute holes 4a formed in the balloon 4, whereas the ninth embodiment differs from the ninth embodiment.
- the in-vivo observation device 90 according to the embodiment is characterized in that the medicine stored in the medicine tank 91 (medicine storage unit) is discharged to the outside of the balloon 4 via the pipe 92.
- the in-vivo observation device 90 of the present embodiment includes the above-mentioned medicine tank 91 for storing a medicine in the housing 2, the above-mentioned conduit 92 for connecting the medicine tank 91 to the outside of the balloon 4, A pump (discharge device) 93 is provided for discharging the drug stored in the drug tank 91 to the outside of the balloon 4 through the 92.
- a fluid is supplied into the norain as in the first embodiment.
- the pipe 92 has the same material strength as that of the balloon 4, and is arranged so as to extend from the medicine tank 91 to the outside of the housing 2 through the inside of the housing 2 and to extend along the outer periphery of the balloon 4. . That is, the conduit 92 is provided integrally with the balloon 4 on the outer surface of the balloon 4. Further, the outlet of the pipe 92, that is, the medicine discharge port is arranged at a position that falls within the observation field of view of the observation system 3. Note that, in the present embodiment, the control unit 15 controls the operation of the pump 93. In the in-vivo observation device 90 configured as described above, the determination unit 17 converts the image captured by the observation system 3 into an image.
- control unit 15 determines that the diseased part needs to be administered based on the drug, the control unit 15 operates the pump 93 to transfer the medicine stored in the medicine tank 91 to the medicine discharge port via the pipe 92. And release it to the outside of balloon 4. At this time, the administration can be performed without confirming the state of drug release by the observation system 3, so that the administration can be performed accurately and efficiently.
- the force determined by the determination unit 17 as to whether or not to administer the drug is not limited to this.
- the pump 93 is operated in response to a signal or the like from outside the living body. I don't care.
- the difference between the tenth embodiment and the fourth embodiment is that, in the fourth embodiment, the affected part is observed through the balloon 4, whereas the in-vivo observation device 200 of the tenth embodiment uses the observation of the affected part. In addition to the above, administration is performed on the affected area.
- the fluid is an optically transparent liquid drug
- the pressure of the norain 4 reaches a predetermined value or more in the balloon 4.
- a leak valve (discharge device) 1101 that discharges the drug to the outside of the balloon 4, and the control unit 15 operates the pump 44 so that the pressure inside the balloon 4 becomes a predetermined value or more when the drug is released. It is supposed to.
- the control unit 15 detects the pressure in the balloon 4 using a pressure sensor (not shown).
- the control unit 15 controls the pump 44.
- the drug in another balloon 41 is further supplied into the balloon 4 to expand the balloon 4.
- the control unit 15 monitors the pressure in the balloon 4 by the pressure sensor, and stops the pump 44 when the pressure in the balloon 4 reaches a predetermined value or more.
- the leak valve 1101 With the balloon 4 expanded to a predetermined value or more, the leak valve 1101 is opened, and the medicine in the balloon 4 is discharged to the outside from the leak valve 1101. At this time, since the affected part and the balloon 4 are in close contact with each other, the discharged medicine acts directly on the affected part without being affected by foreign substances such as body fluids. In this way, it is possible to reliably administer medication to the affected area at a desired position.
- the force determined by the determining unit 17 to determine whether or not to administer the drug is not limited to this.
- the pump 33 is operated in response to a signal or the like from outside the living body. I don't care.
- the difference between the eleventh embodiment and the seventh embodiment is that in the seventh embodiment, the medicine is ejected from the micropores 4a by activating the pressure increasing device 71 provided in the balloon 4.
- the in-vivo observation device 1110 according to the eleventh embodiment is characterized in that a medicine is ejected from the micropores 4a by using an external force as a biological force.
- the in-vivo observation device 1110 of the present embodiment includes, on the housing 2, another balloon 1112 having an electrode 1111 on the outer surface and accommodating a drug inside, and supplies power to the electrode 1111 in the housing 2.
- a power supply unit 1113 to be supplied and a pipeline 1114 that communicates the inside of the balloon 4 and the other balloon 1112 with each other are provided. Also, the power supply unit 1113 supplies power to the electrode 1111 at the time of drug release!
- the control unit 15 supplies power to the electrode 1111 so that the power supply unit 1113 supplies power to the electrode 1111. Control over
- the determination unit 17 determines that medication is necessary, the determination unit 17 notifies the control unit 15 of the determination.
- the control unit 15 receives this and activates the power supply unit 1113 to supply power to the electrode 1111 and flow current to the living tissue.
- the living tissue contracts in response to the stimulus, and also presses the other balloon 4 with an external force. Due to this pressing force, the balloon 412 is moved into the balloon 4 via the drug force pipeline 1114 housed inside the other balloon 1112.
- the power supply unit 1113 supplies a current to the electrode 1111 by a pressure sensor (not shown) that detects the pressure inside the balloon 4 so that the pressure inside the balloon 4 becomes a predetermined value or more.
- the medicine is supplied from the other balloon 1112, the internal pressure of the balloon 4 is reduced. Becomes greater than or equal to a predetermined value, and the minute hole 4a is opened. As a result, the medicine in the balloon 4 is ejected to the outside through the micropores 4a, so that the affected part can be administered. As described above, the medicine can be administered by effectively utilizing the external force received from the living body, so that it is possible to reduce the power consumption at the time of administration and to perform the efficient administration.
- the observation system is provided at the end of the housing to observe the front in the traveling direction in the living body.
- the invention is not limited to this. No problem.
- the observation system may be provided on the other end side of the housing to observe the rear in the traveling direction, or may be provided on the side of the housing as shown in FIG.
- a transparent cover or the like may be provided on the housing over the range of the visual field of the objective lens of the observation system.
- the present invention is not limited to medication, and other observations may be made based on observation through a balloon.
- Functions may be added.
- a function such as an acquisition device for acquiring the pH value in the body, microorganisms, blood, and the like may be added.
- the in-vivo observation device illustrated in FIG. 15 is arranged such that the observation system (imaging device) faces the side of the housing.
- the housing is provided with a transparent cover over the visual field range of the imaging device.
- a medicine tank for storing the medicine a pipeline connecting the medicine tank to the outside of the housing, and a pump interposed in the pipeline for discharging the medicine in the medicine tank to the outside of the housing are built in. Being done.
- the outlet of the conduit that is, the drug release hole, is provided adjacent to the observation system.
- the in-vivo observation device when the drug reaches the administration site, the nolan is expanded and adheres to the living tissue. Then, the in-vivo observation device is fixed to the living body. After fixing, operate the pump to The agent is released outside the housing. By doing so, it is possible to release the drug exactly at a desired position. In particular, since the drug release hole is adjacent to the observation system, the administration state can be confirmed by the observation system, and thus the accuracy of administration is improved.
- another balloon may be provided so that the balloon is arranged on both sides of the housing.
- the drug can be retained between the balloons and a large amount of drug can be released to the target site.
- the medicine is closed between the balloons, so that the medicine can be prevented from flowing in the direction of gravity, and efficient administration can be performed.
- an in-vivo observation device 101 of the present embodiment is provided inside a casing 102 having a capsule shape to be orally injected into a body (in a living body).
- a suction pump device (adhesion assisting means) 110 of a fluid transfer means for bringing the fluid into close contact with each other is provided.
- the housing 102 is formed so as to hermetically seal the inside with plastic or the like, and has an observation wall 102a made of a transparent material provided at least on one end side in a cover shape.
- An objective lens 104 for imaging each part of the body is arranged inside the observation wall surface 102a, and an imaging element 105 such as a CMOS imager is arranged at an image forming position of the objective lens 104.
- an LED 106 for irradiating illumination light to illuminate the field of view of the objective lens 104 is arranged. That is, the objective lens 104, the image sensor 105, and the LED 106 constitute the observation system 103.
- the above-described suction pump device 110 includes a pump body 111 having a drive source and valves (not shown), and pipe lines 112 and 113 connected upstream and downstream of the pump body 111. Is done.
- the pump body 111 uses a fluid (hereinafter, referred to as “body fluid”) such as a body fluid or a gas (hereinafter, referred to as “body fluid”) sucked through a pipe 112 opened at a front end side of the casing 102 provided with the observation wall surface 102a. It has the function of flowing backward through a conduit 113 opening at the rear end.
- the suction pump device 110 is present in front of the housing 102 and absorbs bodily fluid from the opening 11la and drains it from the rear opening 113a. Can be observed as a state of being sucked and brought into close contact with the observation wall surface 102a.
- Such a phenomenon that the living tissue is sucked and adheres to the observation wall 102a is effective for a relatively thin tubular organ such as the intestine, particularly for a tubular organ whose tip is obstructed.
- the above-described suction pump device 110 can also flow bodily fluid from the rear end side opening 113a of the housing 102 to the front end side opening 112a by reversing the pump body 111.
- a control unit 120 for controlling the observation system 103 a memory 121 for recording the captured image acquired by the observation system 103, and a captured image acquired by the observation system 103
- the in-vivo observation device 101 determines a predetermined portion, for example, whether or not the force reaches the intestine based on the determination unit 122 and the battery 123 provided as a power source for supplying power to each of the components described above. Have.
- the determination unit 122 When the in-vivo observation device 101 determines that the in-vivo observation device 101 has reached the intestine, the determination unit 122 has a function of transmitting a signal to that effect to the control unit 120.
- the control unit 120 receives the signal and operates the suction pump device 110, and records the captured image acquired by the observation system 103 in the memory 121!
- the suction pump device 101 is operated to bring the living tissue into close contact with the observation wall surface 102a to perform detailed observation. Is set as follows.
- the in-vivo observation device 101 orally injected into a patient moves in the body along the digestive tract.
- the control unit 120 operates the observation system 103 so as to image the inside of the body.
- the determining unit 122 confirms, for example, a fold-like tissue unique to the intestine in the captured image based on the captured image captured by the observation system 103. It is determined that it has reached the intestine.
- control section 120 When judging section 122 judges that it has reached the intestine, it sends a signal to that effect to notify control section 120.
- the control unit 120 receives this signal, activates the suction pump device 110, and controls the memory 121 to record the image captured by the observation system 103.
- the suction pump device 110 is operated by a control signal of the control unit 120.
- the suction pump device 110 is operated in the normal rotation direction so as to discharge the body fluid sucked from the front of the housing 102 to the rear. Therefore, the bodily fluid present in front of the observation wall surface 102a (in front of the observation direction) receives the suction force generated by the operation of the pump body 111 and flows into the conduit 112 from the opening 112a.
- the bodily fluid After being introduced into the pump main body 111 through the conduit 112, the bodily fluid is further discharged from the pump main body 111, passes through the conduit 113, and is drained to the rear of the housing 102 from the opening 113a. At this time, foreign substances such as food residues existing in the intestine are also discharged to the rear of the casing together with the flow of the body fluid.
- the body fluid existing in front of the in-vivo observation device 101 in the observation direction is reduced, and the inner wall of the intestine is reduced. Is sucked in the direction of the opening 112a by the negative pressure.
- the living tissue of the inner wall of the intestine comes into close contact with the observation wall surface 102a provided with the opening 112a, so that the observation system 103 has good visibility without passing through foreign substances such as body fluids and food residues. This allows direct observation of living tissue under the environment. Then, by observing the living tissue in such a close contact state, a clear captured image can be recorded in the memory 121.
- the body fluid and the like discharged to the rear of the housing 102 are returned to the front by reversing the pump body 111.
- Such an instruction to reverse the operation of the pump main body 111 can be given by, for example, transmitting a radio signal to the control unit 120 or the like in the housing 102 as well as an external force.
- a pressure sensor 116 is built in an appropriate place of the pump body 111 and the detected pressure is detected. May be used.
- the pressure sensor 116 When a high pressure is detected, the pump body 111 may automatically shift from the normal operation to the reverse operation, or the normal operation of the pump body 111 may be stopped and valves (not shown) may be opened.
- the opening 112a and the opening 113a may be in communication with each other so that bodily fluids and the like can flow freely.
- the installation position of the pressure sensor 116 is not limited to the pump body 111, but may be in the middle of the pipelines 112 and 113.
- the normal rotation operation of the pump body 111 may be stopped or the normal rotation operation may be shifted to the reverse rotation operation.
- the living tissue to be observed is brought into close contact with the observation wall surface 102a by operating the suction pump device 110 provided as an adhesion assisting means, and the living tissue is directly contacted with the observation wall surface 102a. Since observation can be performed, clear image power can be reliably recognized without being affected by foreign substances such as body fluids without performing intestinal washing or the like in the intestine. In particular, when the patient has a disease such as inflammatory bowel disease, the condition in the intestine can be surely observed while preventing the symptoms caused by the bowel washing. In addition, since observation can be performed over the entire length of the intestine, it is necessary to ensure observation even at locations where conventional endoscopy has made it difficult to perform observations, for example, at positions where anal power is sufficiently far away. It comes out.
- the pump body 111 be driven by pulse driving. That is, when the pump body 111 is continuously operated to suck the bodily fluid, the suction force may become too strong, or the power consumption may increase to cause a problem in the capacity of the battery 123. For this reason, by employing the pulse drive, the operation of the pump body 111 becomes an intermittent operation according to the pulse, and the adjustment of the suction force and the energy-saving operation are facilitated.
- the determination unit 122 determines whether or not the force has reached the intestine based on the image captured by the observation system 103, and according to the determination, determines the suction pump device.
- Activated 110 but is not limited to this.
- the position of the in-vivo observation device 101 in the body is confirmed outside the living body, a signal is sent when the desired position is reached, and a suction is performed when the signal is received.
- Pump equipment The device 110 may be configured to operate.
- the control unit 120 may be set to operate the observation system 103 when receiving the signal. By doing so, the observation system 103 can be operated only at the position where observation is desired, so that power saving can be achieved.
- a housing 102 of an in-vivo observation device 101A includes a hood 107 as a cylindrical member protruding from a periphery of an observation wall surface 102a in an observation direction.
- the hood 107 has an opening in the observation direction and an opening 112a of the observation wall surface 102a so that the body fluid can be sucked.
- the hood 107 restricts the suction area to a certain extent, so that it is efficient. Can be sucked securely.
- hood 107 a tubular member projecting from the periphery of the observation wall surface 102a in the observation direction, such as an in-vivo observation device ⁇ ⁇ shown in FIG.
- a hood 107A may be used.
- the hood 107A having an optimal shape can be appropriately selected and exchanged according to the use of the in-vivo observation device 101A ', that is, the shape and position of the living tissue to be observed.
- the detachable hood 107A shown in FIG. 20 has a shape in which the opening at the tip is inclined to shorten the opening 112a side.
- hoods 107 and 107A or the vicinity of the distal end is made of a flexible material, adverse effects on living tissues that come into contact during suction can be improved. Can be observed.
- the in-vivo observation device 101B is configured to include an observation wall 102 formed on one side surface of a capsule-shaped casing 102.
- the observation wall surface 102 is provided in a concave portion formed on the side surface of the housing 102.
- An opening 112a of a conduit 112 connected to the suction pump device 10 is provided on the observation wall 102.
- the body fluid sucked from the opening 112a by the operation of the pump body 111 has a substantially circular cross section.
- the gas is discharged from the opening 113a through the conduits 112 and 113 extending in the diametrical direction of the housing 102.
- the horizontally elongated capsule-shaped in-vivo observation device 101B is locked to the living tissue on the outer peripheral surface side in a stable state, so that the suction pump device 110 operates together with the body fluid.
- the living tissue sucked toward the opening 112a comes into close contact with the observation wall surface 102. Therefore, when the in-vivo observation device 101B observes a tubular organ such as the intestine, particularly when observing a horizontal or nearly horizontal part of a living tissue, the stable observation posture of the in-vivo observation device 101B is easily maintained. Therefore, it is possible to perform a clear observation and obtain a clear captured image.
- a brush 108 as a removing means.
- the brush 108 is provided at an appropriate density in a state protruding from the outer peripheral surface (side surface) of the housing 102.
- the opening 112a can also prevent foreign matter from entering the observation region from which the body fluid or the like has been removed. Therefore, the foreign matter removing means such as the brush 108 reduces the load on the suction pump device 110 and is effective in maintaining a favorable observation environment.
- the in-vivo observation apparatus 101C of this embodiment has a configuration in which a balloon 130 as an outer diameter expanding means is provided on a side surface of the housing 102.
- This balloon 130 is a ring provided to surround the side surface (outer peripheral surface) of the casing 102 over the entire circumference in order to enlarge the outer diameter of the in-vivo observation device 101C at the time of expansion, and particularly to close an organ having a large lumen. -Shaped member.
- the expansion of the normal 130 is performed by supplying a fluid such as a compressed gas through a conduit 132 from expansion means 131 installed inside the housing 102.
- the expansion means 131 may be provided with an open / close valve in a container such as a cylinder for storing compressed gas, or may be a device in which the body fluid sucked by the suction pump device 110 is sent into the balloon 130 to be inflated. A little.
- the expansion of the balloon 130 is performed by operating the expansion means 131 or the suction pump device 110 in response to a signal output from the control unit 120 or a signal of extracorporeal force under predetermined conditions. It is implemented.
- the balloon 130 expands and adheres to the lumen, the lumen is separated at the border of the balloon 130, so that the suction pump 110 can efficiently suck the bodily fluid.
- the in-vivo observation device (housing) is provided with an adhesion assisting means for making the observation wall adhere to the living tissue at the time of observation.
- the in-vivo observation device itself is adhered to the living tissue using its own weight. That is, the adhesion assisting means for bringing the observation wall surface into close contact with the living tissue during observation is a difference in specific gravity between the body fluid and the in-vivo observation device.
- FIGS. 24 and 25 show an in-vivo observation device 101 D for observing inside a large organ such as the stomach.
- the in-vivo observation device 101D is set to have a specific gravity larger than the specific gravity of the body fluid existing in the living body. That is, in the illustrated example, the specific gravity of the whole capsule is set to be larger than the gastric juice.
- the capsule sinks securely in the gastric juice by its own weight. Observable.
- the patient who swallows the in-vivo observation device 101D changes its body position as appropriate, so that the in-vivo observation device 101D moves to a lower position due to its own weight, so that it spreads like a stomach and evenly spreads biological tissues in organs. Can be observed.
- the in-vivo observation device 101D in this case may be used by changing the specific gravity setting of each of the in-vivo observation devices described above, or may be a device in which the suction pump device 110 is removed.
- the above-mentioned in-vivo observation device 101D be eccentric with respect to the observation wall surface 102a side.
- the in-vivo observation apparatus 101 whose center of gravity is located on the observation wall surface 102a side is provided with a weight 109, for example, to adjust the center of gravity to move to the observation wall surface 102a side, or as shown in FIG.
- the position of the center of gravity may be adjusted by devising the arrangement of the various components housed in the interior. With such a configuration, the observation wall 102a, which has been directed downward by gravity when submerging in a body fluid, comes into close contact with the living tissue side, so that more reliable observation is possible.
- the adhesion assisting means for adhering the observation wall surface to the living tissue at the time of observation uses pressure as an action from outside the living body.
- the in-vivo observation device 101 orally injected into the living body reaches a desired observation position, an external force is applied around the organ to be observed to bring the living tissue into close contact with the observation wall surface 102a. Since such a procedure is performed by a doctor applying pressure by hand while watching the image, a special tool is not required and the living tissue can be easily observed.
- the image in this case may be an image sent from the in-vivo observation device 101 or an image obtained from an external force.
- a compression tool 140 of an extracorporeal adhesion assisting device provided with an action generating portion that acts on the housing 2 from outside the body as an adhesion assisting means.
- the compression device 140 includes an antenna (reception unit) 141 for receiving data transmitted from a transmission unit (not shown) provided in the housing 102, a pressing unit 142 provided therein, It comprises a display unit 143 shown and displayed on a screen, and a grip unit 144 for performing a pressing operation with this device.
- the antenna 141 is for detecting image data, a signal for position detection, and the like transmitted from the housing 102 inside the body, and in the illustrated configuration example, the tip 142a for pressing is formed as a curved surface. It is built in the convex pressing portion 142 formed.
- the image data and the signal for position detection detected by the antenna 141 are displayed on a display unit 143 such as a liquid crystal monitor, an EL monitor, and a plasma monitor.
- the above-described compression device 140 is used, for example, by a doctor holding a grip portion 144 for pressing operation in his hand and performing a pressing operation of pressing the patient's body while looking at the screen of the display unit 143.
- a doctor holding a grip portion 144 for pressing operation in his hand and performing a pressing operation of pressing the patient's body while looking at the screen of the display unit 143.
- the work procedure will be briefly described.
- the compression device 140 with the switch turned on is brought close to the patient's body.
- the image data transmitted from 102 and the position information of housing 102 are displayed on the screen.
- the doctor operates the compression device 140 while looking at the image data, and presses the distal end portion 142a of the pressing portion 142 in the direction of pressing. And judge strength. Then, an appropriate pressure is applied by the pressing part 142, so that the housing 102 and the living tissue to be observed are closely observed.
- the information acquisition and the compression operation can be performed by a single device with the same force and within the same field of view. Work load can be reduced.
- the compression tool 140A of the first modified example is different in that an electromagnet (electromagnetic coil) 145 that can be appropriately turned on and off is provided in the pressing portion 142. Further, for the housing 102 used in combination with such a compression device 140A, the magnet 114 which is attracted to the magnetic attraction of the compression device 140A is required.
- the magnet 114 may be a specially-prepared magnet, or may be a magnet using a built-in component such as a metal that can be magnetically attracted by the electromagnet 145. That is, in this case, the electromagnet 145 serves as a magnetic field generator of the action generation unit, and the magnet 114 serves as the work unit. Note that a ferromagnetic material can be used instead of the magnet 114.
- the compression device 140B of the second modification is different from the compression device 140A of the first modification in that a power supply antenna 146 is provided.
- a power receiving antenna 115 that generates power in cooperation with the power feeding antenna 146 is required.
- the magnet 114 of the housing 102 is attracted to the compression device 140B.
- the magnet 114 is a permanent magnet having a magnetic pole
- the power feeding antenna 146 and the power receiving antenna 115 face each other depending on the direction of the magnetic pole on the electromagnet 145 side. That is, as shown in FIG. 29B, when the magnetic pole on the pressing part 142 side formed by the electromagnet 145 is the S pole on the tip part 142a side and the N pole on the display part 143 side, the magnet 114 on the in-vivo observation device side Is attracted to the S pole of the electromagnet 115.
- the observation wall surface 102a is arranged on the N pole side of the in-vivo observation device 101, the observation wall surface 102a faces the inner wall surface of the lumen due to the magnetic attraction force from the outside of the body.
- the living tissue can be observed reliably.
- the power feeding antenna 146 and the power receiving antenna 115 face each other, the power generation efficiency becomes the highest, and by supplying power to the battery in the housing, the battery can be used for a long time.
- a magnetic member is provided inside the compression device 140C as a position detecting unit of the housing 102.
- a sensor 147 is provided. The magnetic sensor 147 can detect an accurate position of the housing 102 by detecting the magnet 114 installed in the housing 102.
- the current position of the casing 102 in the living body can be accurately recognized with a relatively simple configuration, so that the external force is applied to an appropriate position and the casing 102 is moved into the lumen. Observation can be made in close contact with the wall surface.
- an adhesion assisting means for adhering the housing 102 to a living tissue to be observed, thereby preventing a visual field from being obstructed by a bodily fluid or the like and obtaining a good observation image.
- a case in which the above-described housing 102 is provided with a dispensing unit that is in close contact with a target living tissue and accurately dispenses the same will be described.
- the observation system, the adhesion assisting unit, the control unit, and the like in each of the above-described embodiments are omitted, and only the administration unit is mainly shown.
- the administration means 150 shown in Fig. 31 is provided with a sponge-like medicine storage section 152 impregnated with a medicine in a cylinder chamber 151 provided with a medicine opening 151a opened on the outer peripheral surface of the housing 102.
- the medicine is extruded and dispensed by compressing the storage part 152 from the inside of the housing 102 with the piston 153.
- the medicine storage section 152 functions as a medicine storage and conveyance means for storing and conveying the medicine in the housing 102.
- the medication by the medication means 150 is performed by, for example, a medication signal from the control unit 120 or a medication signal from outside after confirming that the living tissue in close contact is the medication target by the observation means 103 described above.
- the piston 153 is operated to administer the medicine. That is, when the piston 153 is pushed into the cylinder chamber 151 and pressure is applied while the medicine storage section 152 is in close contact with the living tissue of the diseased part to be administered, the medicine stored so as to permeate the medicine storage section 152. Since the medicine is pushed out from the dispensing opening 15 la, the medicine can be directly and accurately applied to the living tissue of the affected area.
- a first modification of the above-described administration means 150 will be described with reference to FIG. Note that the same components as those of the above-described administration means 150 in FIG. 30 are denoted by the same reference numerals, and detailed description thereof will be omitted.
- the medication means 150A of the first modified example a plurality of minute needles 154 are provided in the medication opening 151a of the medicine storage part 152 functioning as a medicine storage and transport member. Since the needle 154 pierces the living tissue due to close contact, when the piston 153 is pushed in under this condition and pressure is applied, the drug in the drug storage section 152 is pushed out and injected directly from the needle 154 into the living tissue of the diseased part. Is done. Therefore, since the medicine is accurately injected and administered to the living tissue of the affected part, efficient medicine administration becomes possible.
- the above-mentioned sponge-like configuration can be used for the medicine storage section 152 in this case.
- the present invention is not limited to this.
- a plurality of needles 154 may be provided on a plate-like member fixed to the cylinder chamber 151 so as to withstand the pressure of the piston 153 and close the dosing opening 151a.
- a gel substance impregnated with a drug is stored in the drug storage section 153 of the drug storage / transport means. Then, by operating the piston 153 in the vicinity of the administration target, the substance is extruded and released to the vicinity of the affected part, so that the gel-like substance containing the drug adheres to the living tissue of the affected part. As a result, since the gel-like substance stays in the affected area for a long time, the drug is gradually released from the substance, so that a long-term administration is possible.
- a cylinder chamber is formed by using the outer peripheral wall surface of the housing 102, and a space defined by the wall surface 156 having the medication conduit 155 is used for storing a medicine.
- the drug storage unit is 152.
- the medication conduit 155 establishes a communication state between the medicine storage section 152 and the outside of the housing 102, and the distal end thereof opens into the wall surface of the housing 102 to become the medicine inlet 155a. The compressed and extruded drug is released from the drug inlet 155a to the vicinity of the affected area.
- the same components as those of the above-described dosing unit and its modification are denoted by the same reference numerals, and detailed description thereof will be omitted.
- the administration means 150C of the third modified example the gel medicine stored in the medicine accommodating section 152A is guided to the surface of the housing 102 by electrophoresis and directly applied to the living tissue in close contact.
- a positive electrode 158 and a negative electrode 159 connected to a power supply 157 are provided in the medicine container 152A.
- the positive electrode 158 is provided on the medication surface side, which is the outer peripheral surface side of the medicine storage part 152A, that is, on the medication opening 160 side opened in the housing 102. Further, the negative electrode 159 is provided on the bottom surface of the medicine container 152A, which is the center side of the housing 102. Accordingly, when the casing 102 reaches a predetermined affected part position and the power is turned on to turn on the power supply 157, electrophoresis occurs between the positive electrode 158 and the negative electrode 159, so that the gel-like drug is slowly guided to the administration opening 160. Then, it is directly applied to the living tissue in close contact with the housing 102. For this reason, the medicine in the medicine storage section 152A can be reliably applied to the living tissue of the affected area for a long time and over a wide range.
- the medicine stored in the medicine storage part 152B of the container provided as the medicine storage and transport means is atomized by the spraying device 161 and discharged.
- the medicine can be diffused and administered over a wide range of the living tissue.
- Reference numeral 162 in the drawing is a discharge port opened in the housing 102.
- the above-described dosing means 150D of the fourth modified example compress and extrude the atomized medicine like the dosing means 150 of the fifth modified example shown in FIG.
- the medicine atomized by the atomization device 161 is discharged under pressure by the piston 164 sliding in the cylinder 163, so that the medicine can be dispensed over a wider range than when the medicine is simply atomized and discharged. Can be.
- Such pressurized release is particularly suited for dosing in long organs such as the intestine.
- the dosing means 150E of the sixth modified example includes a compressed air discharging device 170 as a foreign matter removing means for discharging air or the like before the dosing to remove a body fluid or the like existing on the affected part surface.
- the piston 171 compresses the air in the cylinder 172 and injects it into the vicinity of the affected part from the outlet 173. Foreign matter such as bodily fluids can be removed.
- the treatment is performed in the order of foreign substance removal and medication.
- the configuration example shown in FIG. 37 includes a drug release device 165 configured similarly to the above-described compressed air release device 170.
- the drug discharging device 165 is operated, and the drug stored in the cylinder 166 is compressed by the piston 167. Therefore, the medicine in the cylinder 166, which also functions as a medicine storage section, is discharged from the discharge port 162 to the outside of the housing 102 by being compressed by the piston 167, and is reliably dispensed to the living tissue from which the foreign matter has been removed.
- the medication means 150F of the seventh modification is configured to automatically perform treatment in the order of foreign substance removal and medication to perform medication.
- the dispensing means 150F includes a cylinder 168 and a piston 169, and is configured so that air and medicine stored in the cylinder 168 are pushed out by the piston 169. That is, by storing the medicine on the side of the piston 169 of the cylinder 168 and storing the air on the side of the discharge port 162 opening to the housing 102, the air is first released from the discharge port 162, and then the drug is continuously stored. Can be released automatically. Therefore, the drug can be automatically administered directly to the living tissue to be administered after the foreign matter present on the surface of the living tissue is first removed.
- the dispensing means 150G of the eighth modification is characterized in that a magnetic response valve 180 that opens and closes when a magnet is approached from outside the body is used.
- the magnetic responsive valve 180 is disposed in a medicine outlet flow path that communicates with the outlet cap and discharge port 162 of the cylinder 181 that stores the medicine.
- the piston 182 in the cylinder 181 is urged by the panel 183 in the direction of pushing out the medicine.
- the administration means 150G having such a configuration stores the medicine in the cylinder 181 with the magnetic response valve 180 closed. Therefore, when it is confirmed that the casing 102 has reached the affected part to be administered, the magnet is brought close to the affected part from outside the body, and the magnetic response valve 180 is opened. As a result, the piston 182 under the urging of the panel 183 pushes out the medicine, so that the living tissue is dispensed from the discharge port 162.
- the in-vivo observation device of the present invention provides a close contact that removes foreign substances such as body fluids by bringing the observation wall into close contact with the living tissue to be observed in order to ensure a favorable observation field of view of the observation system 103. It has auxiliary means.
- the in-vivo observation device is provided with a dispensing means for dispensing a medicine in a state in which the in-vivo observation device is in close contact with a living tissue, accurate and reliable dosing of a target diseased part can be performed.
- the balloon can be expanded and brought into close contact with living tissue, and the living tissue can be observed through the balloon.
- the condition of the tissue can be observed.
- the living tissue can be observed in a state where the observation wall surface and the living tissue are in close contact with each other by the adhesion assisting device, the body fluid, the gas, and the like can be obtained without performing intestinal intestinal washing.
- the state of the living tissue can be reliably observed without the fluid such as obstructing the field of view.
- the disease is prevented while preventing The state in the digestive tract including the part can be reliably observed.
Abstract
Description
Claims
Priority Applications (1)
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EP04791955A EP1669026A4 (en) | 2003-10-01 | 2004-10-01 | BODY IN AN OBSERVATION DEVICE |
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JP2003-343064 | 2003-10-01 | ||
JP2003343064A JP4526253B2 (ja) | 2003-10-01 | 2003-10-01 | 体内観察装置 |
JP2003-361782 | 2003-10-22 | ||
JP2003361782A JP4503979B2 (ja) | 2003-10-22 | 2003-10-22 | 体内装置および医療機器 |
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WO2005032370A1 true WO2005032370A1 (ja) | 2005-04-14 |
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US (2) | US20050124875A1 (ja) |
EP (1) | EP1669026A4 (ja) |
WO (1) | WO2005032370A1 (ja) |
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Also Published As
Publication number | Publication date |
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US20050124875A1 (en) | 2005-06-09 |
EP1669026A4 (en) | 2010-08-25 |
US20080242928A1 (en) | 2008-10-02 |
EP1669026A1 (en) | 2006-06-14 |
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