WO2002054952A1 - Dispositif de perforation - Google Patents
Dispositif de perforation Download PDFInfo
- Publication number
- WO2002054952A1 WO2002054952A1 PCT/JP2002/000106 JP0200106W WO02054952A1 WO 2002054952 A1 WO2002054952 A1 WO 2002054952A1 JP 0200106 W JP0200106 W JP 0200106W WO 02054952 A1 WO02054952 A1 WO 02054952A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lancet
- housing
- auxiliary member
- puncture device
- tip
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/151—Devices specially adapted for taking samples of capillary blood, e.g. by lancets, needles or blades
- A61B5/15186—Devices loaded with a single lancet, i.e. a single lancet with or without a casing is loaded into a reusable drive device and then discarded after use; drive devices reloadable for multiple use
- A61B5/15188—Constructional features of reusable driving devices
- A61B5/15192—Constructional features of reusable driving devices comprising driving means, e.g. a spring, for retracting the lancet unit into the driving device housing
- A61B5/15194—Constructional features of reusable driving devices comprising driving means, e.g. a spring, for retracting the lancet unit into the driving device housing fully automatically retracted, i.e. the retraction does not require a deliberate action by the user, e.g. by terminating the contact with the patient's skin
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150015—Source of blood
- A61B5/150022—Source of blood for capillary blood or interstitial fluid
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150053—Details for enhanced collection of blood or interstitial fluid at the sample site, e.g. by applying compression, heat, vibration, ultrasound, suction or vacuum to tissue; for reduction of pain or discomfort; Skin piercing elements, e.g. blades, needles, lancets or canulas, with adjustable piercing speed
- A61B5/150061—Means for enhancing collection
- A61B5/150099—Means for enhancing collection by negative pressure, other than vacuum extraction into a syringe by pulling on the piston rod or into pre-evacuated tubes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150175—Adjustment of penetration depth
- A61B5/150183—Depth adjustment mechanism using end caps mounted at the distal end of the sampling device, i.e. the end-caps are adjustably positioned relative to the piercing device housing for example by rotating or screwing
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150175—Adjustment of penetration depth
- A61B5/15019—Depth adjustment mechanism using movable stops located inside the piercing device housing and limiting the travel of the drive mechanism
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150381—Design of piercing elements
- A61B5/150412—Pointed piercing elements, e.g. needles, lancets for piercing the skin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150381—Design of piercing elements
- A61B5/150503—Single-ended needles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/151—Devices specially adapted for taking samples of capillary blood, e.g. by lancets, needles or blades
- A61B5/15101—Details
- A61B5/15103—Piercing procedure
- A61B5/15107—Piercing being assisted by a triggering mechanism
- A61B5/15113—Manually triggered, i.e. the triggering requires a deliberate action by the user such as pressing a drive button
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/151—Devices specially adapted for taking samples of capillary blood, e.g. by lancets, needles or blades
- A61B5/15101—Details
- A61B5/15115—Driving means for propelling the piercing element to pierce the skin, e.g. comprising mechanisms based on shape memory alloys, magnetism, solenoids, piezoelectric effect, biased elements, resilient elements, vacuum or compressed fluids
- A61B5/15117—Driving means for propelling the piercing element to pierce the skin, e.g. comprising mechanisms based on shape memory alloys, magnetism, solenoids, piezoelectric effect, biased elements, resilient elements, vacuum or compressed fluids comprising biased elements, resilient elements or a spring, e.g. a helical spring, leaf spring, or elastic strap
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/151—Devices specially adapted for taking samples of capillary blood, e.g. by lancets, needles or blades
- A61B5/15186—Devices loaded with a single lancet, i.e. a single lancet with or without a casing is loaded into a reusable drive device and then discarded after use; drive devices reloadable for multiple use
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/151—Devices specially adapted for taking samples of capillary blood, e.g. by lancets, needles or blades
- A61B5/15186—Devices loaded with a single lancet, i.e. a single lancet with or without a casing is loaded into a reusable drive device and then discarded after use; drive devices reloadable for multiple use
- A61B5/15188—Constructional features of reusable driving devices
- A61B5/1519—Constructional features of reusable driving devices comprising driving means, e.g. a spring, for propelling the piercing unit
Definitions
- the present invention relates to a puncture device used to pierce the tip of a lancet into skin when collecting blood or other body fluid or tissue for examination.
- FIG. 16A An example of a conventional technique relating to a puncture device is disclosed in Japanese Patent Application Laid-Open No. 11-95777.
- This prior art has a structure in which a lancet holder 92 for holding a lancet L is provided in a substantially cylindrical housing 90, as shown in FIG. 16A.
- a cylindrical plunger 93 is fitted to one end of the housing 90.
- the plunger 93 when the plunger 93 is pressed in the direction of the arrow N1, the state in which the lancet holder 92 is latched at a position in the housing 90 is forcibly released.
- the holder 90 moves forward toward the distal end opening 90 a of the housing 90 by the elastic force of the spring 95.
- FIG. 16C since the distal end surface 90 b of the housing 90 is pressed against the skin 99, the lancet L is applied to the skin 99 by the forward movement of the lancet holder 92 described above. Piercing the tip of.
- the housing 90 is formed by connecting two sleeves 9 OA and 9 OB.
- the sleeve 9 OA is arranged in the axial direction of the housing 90 (arrow N (2 directions). More specifically, as shown in FIG. 16B, an inclined surface 90 c is provided on the inner peripheral surface of the sleeve 9 OA, and when the sleeve 9 OA is rotated, the inclined surface 90 c is formed.
- the position of the sleeve 90A can be adjusted in the direction of the arrow N2 by the action of contact with a predetermined member. According to such a configuration, as shown in FIG.
- the dimension s that the lancet L projects from the tip end surface 90b of the housing 90 1 can be adjusted by the position of the sleeve 90A. Therefore, the amount of lancet L piercing skin 99 can also be changed.
- the above conventional technology has the following problems. That is, when the distal end surface 90b of the housing 90 is pressed against the skin 99 with a weak force, the skin 99 is substantially flush with the distal end surface 90b. However, when the pressing force against the skin 99 is increased, the skin 99 enters the distal end opening 90a of the housing 90 as shown in FIG. This amount of penetration is not always constant and varies depending on the softness of the skin 99. When piercing the lancet L, a negative suction pressure may be applied to the part in order to promote bleeding from the part. Even in such cases, the above-mentioned amount of entry will change.
- the skin 99 is substantially flush with the tip surface 90b, and as shown in FIG. 17, the skin 99 enters the tip opening 90a.
- the lancet L pierces the skin 99 differently from the case in which the lancet L is pierced. Even when the skin 99 enters the tip opening 90a, if the penetration amount s2 is different, the penetration amount of the lancet L is also different. As described above, in the above-described conventional technology, it was difficult to pierce the skin with a desired amount of lancet L.
- An object of the present invention is to provide a puncture device that can solve or reduce the above-mentioned problems.
- the puncture device provided by the present invention comprises:
- a housing having an opening at the tip
- An operating mechanism that enables the lancet to advance from inside the housing toward the opening;
- a puncture device comprising:
- An auxiliary member provided so as to advance toward the opening along with the lancet and to have a distal end located on a side of the distal end of the lancet;
- the auxiliary member is characterized in that its relative position with respect to the lancet can be changed so that the dimension of the tip of the lancet projecting from the tip of the auxiliary member can be increased or decreased.
- the side of the front end of the lancet means at least a part around the front end of the lancet.
- the housing includes a sleeve rotatable relative to other portions of the housing;
- a cam mechanism for moving the auxiliary member in the front-rear direction of the lancet when the auxiliary member rotates relative to the lancet;
- the auxiliary member is engaged with the sleeve so that the auxiliary member rotates relative to the lancet by rotating the sleep.
- a lancet holder for detachably holding the lancet is provided.
- the lancet is advanced by moving by the operation of the operating mechanism.
- the auxiliary member is attached to the lancet holder.
- the auxiliary member and the lancet holder ′ are screwed together, and by rotating them relatively, the relative position between the auxiliary member and the lancet is changed. It is composed of
- the tip of the auxiliary member is formed so as to surround the entire circumference of the tip of the lancet.
- the lancet has a main body, and a needle protruding from a distal end surface of the main body, and
- the distal end of the auxiliary member is provided with a backing plate facing the front end surface of the main body, and the backing plate is provided with a hole through which the needle passes.
- the catching member has a shape capable of protruding the entire length of the needle portion of the lancet from the tip of the supplementary member.
- the operating mechanism is:
- An elastic member for urging the lancet holder from inside the housing toward the opening;
- a latch member capable of latching the lancet holder in the housing against the elastic force of the elastic member
- An operating member provided so as to be at least partially exposed outside the housing
- a latch releasing member that operates to release the latch state of the lancet holder when the operating member is operated
- the apparatus further comprises a pump mechanism, and the pump mechanism includes:
- a cylinder and a plunger which can communicate with the outside of the housing via an exhaust port and constitute a pressure chamber which can communicate with the inside of the distal end of the housing via an intake port;
- An operation mechanism for a plunger that allows the plunger to reciprocate relative to the cylinder by an operation different from the operation of the operation mechanism, and an exhaust port that is openable and closable, and wherein the plunger is A first check valve for opening the exhaust port when reducing the volume of the pressure chamber;
- a second check valve provided so as to be capable of opening and closing the intake port, and opening the intake port when the plunger increases the volume of the pressure chamber;
- the operating mechanism for the plunger includes an outer cylinder reciprocally fitted to the housing itself, and the plunger facing the cylinder when the outer cylinder reciprocates. Connecting means for connecting the plunger to the outer cylinder so as to reciprocate.
- FIG. 1 is a perspective view illustrating an example of a puncture device according to the present invention.
- FIG. 2 is a sectional view taken along the line II-II of FIG.
- FIG. 3 is a sectional view taken along the line II-III of FIG.
- FIG. 4 is an enlarged sectional perspective view of a main part of the puncture device shown in FIG.
- FIG. 5 is an enlarged sectional view of a main part of FIG.
- FIG. 6 is a diagram for explaining the operation of the part shown in FIG.
- FIG. 7A and FIG. 7B are cross-sectional views showing the operation when generating a negative pressure.
- FIG. 8 is a cross-sectional view illustrating a forward movement state of the lancet.
- FIG. 9 is a cross-sectional view of a main part showing a state where the lancet has been pierced into the skin.
- FIG. 10 is a cross-sectional view of a main part showing a state in which the amount of protrusion of the lancet from the tip of the auxiliary member is increased.
- FIG. 11 is a cross-sectional view showing the operation when the negative pressure state is eliminated.
- FIG. 12 is a cross-sectional perspective view of a main part showing another embodiment of the present invention.
- FIG. 13A is a perspective view of a main part showing another embodiment of the auxiliary member.
- FIG. 13B is a cross-sectional view of FIG. 13A along XII-XIII.
- FIG. 14 is a perspective view of a main part showing another embodiment of the auxiliary member.
- FIG. 15 is a cross-sectional view of a main part showing another embodiment of the mounting structure of the auxiliary member.
- FIG. 16A is a cross-sectional view showing an example of the prior art
- FIG. 16B is a perspective view of some parts of the above prior art
- FIG. 16C shows the operation of the above prior art. It is principal part sectional drawing showing.
- FIG. 17 is a cross-sectional view of a main part showing the operation of the above-described conventional technology.
- Puncturing device A of the present embodiment has a lancet holder 3 for detachably holding housing 1, outer cylinder 2, and lancet L, and an auxiliary device mounted on lancet holder 3, as best seen in FIG.
- a member 8 a latch mechanism 4 for the lancet holder 3, and a pump mechanism 5 for forming a pressure chamber 53 for generating a negative pressure are provided.
- Lancet L is for example synthetic resin
- a metal needle part 98 b protrudes from the tip surface of a substantially cylindrical main body part 98 a made of metal. From a sanitary point of view, this lancet L is preferably used only once and discarded after use.
- the housing 1 is formed by connecting, for example, three sleeves 10a to 10c in series, and has a substantially cylindrical shape having an opening 11 at the end.
- the sleeve 10a forms a distal end portion of the housing 1, and is rotatable relative to the sleeve 10b.
- the tip 10a 'of the sleeve 10a is a portion pressed against the skin of the user, and is detachable from the sleeve 10b.
- a substantially cylindrical holding piece 39 for fitting and holding the main body 98a of the lancet L is provided.
- the lancet holder 3 can reciprocate in the axial direction N g of the housing 1 (corresponding to the front and rear direction of the lancet L), and can be latched at a predetermined position in the housing 1 by the latch mechanism 4. is there.
- the lancet holder 3 can be advanced toward the opening 11 by releasing the latch state. The specific structure will be described later.
- the auxiliary member 8 has a substantially cylindrical shape, is rotatably fitted to the distal end of the lancet holder 3 so as to surround the outer periphery of the substantially entire length region of the lancet L, and is provided inside the distal end of the housing 1. Slidingly fitted to the substantially cylindrical guide body 36.
- the tip 8a of the auxiliary member 8 is a portion for abutting the lancet L on the skin 99 when the lancet L is pierced into the skin 99 of the user, and its outer diameter is the opening at the tip of the housing 1. 11 It is smaller than the inner diameter of 1.
- the auxiliary member 8 is held by the sleeve 10a together with the guide body 36, and the lancet L is attached to the lancet holder 3. They are designed so that they do not interfere with attachment or detachment.
- Guide body 3 6 or sleeve 10 a If at least the vicinity of the distal end is made transparent, it is possible to visually observe the bleeding from the portion where the lancet L has been pierced, and such a configuration can be adopted in the present invention.
- auxiliary member 8 At the upper part of the auxiliary member 8, an engaging projection 81 is provided for engaging with a concave groove 19 formed on the inner wall surface of the sleeve 10a. For this reason, the auxiliary member 8 rotates in the same direction when the sleeve 10a is rotated in the direction of the arrow Nh, as is clearly shown in FIG.
- Each of the auxiliary member 8 and the lancet holder 3 constitutes a cam mechanism C.
- the cam mechanism C is formed on the upper end of the auxiliary member 8 and has a cam surface 89 having a surface inclined with respect to the axial length direction Ng of the housing 1 and an outer surface of the lancet holder 3. And a convex portion 38 contacting the cam surface 89.
- the cam mechanism C shifts the contact portion of the convex portion 38 with the cam surface 89, thereby causing the catching member 8 to move in the axial direction N of the housing 1. Demonstrate the function of moving to g.
- the concave groove 19 extends in the same direction to allow the auxiliary member 8 to move in the axial direction Ng of the housing 1.
- a spring 65 that presses the auxiliary member 8 toward the head of the housing 1 with a relatively small force is provided inside the front end of the housing 1 so as not to hinder the forward movement of the lancet holder 3 ( See Figure 2).
- the auxiliary member 8 is movable in the axial direction Ng of the housing 1 relative to the lancet holder 3, as shown in FIG. 2 and FIG.
- the tip of the lancet L can project below the tip 8a of the lancet L, and the amount of projection S can be adjusted.
- the outer circumference of the sleeves 10a and 10b is provided with a reference line 18a and a plurality of graduation lines 18b as a guide of the protrusion amount S. .
- a mechanism as shown in FIG. it can.
- a projection 80 is formed on the outer periphery of the tip 8 a of the auxiliary member 8.
- the projection 80 fits into a slit 36b formed between a pair of plate-like portions 36a of the guide body 36, and is engaged with each plate-like portion 36a.
- the protrusion 80 of the auxiliary member 8 is movable in the axial direction Ng of the guide body 36 within the slit 36 b, and the movement of the auxiliary member 8 in the axial direction of the housing 1 is performed. Can also be performed appropriately.
- the outer cylinder 2 is fitted to the housing 1 so as to be able to reciprocate in the axial direction Ng.
- the outer cylinder 2 can be returned to the original position by the elastic force of the panel 60.
- stepped portions 20 and 12 are provided on the upper inner peripheral surface of the outer cylinder 2 and the outer peripheral surface of the housing 1 at the intermediate portion in the axial direction, respectively.
- a gap is formed between the housing and the housing 1, and a spring 60 is inserted into the gap between the brackets.
- the panel 60 is a compression coil spring, and plays a role of returning the plunger 51 of the pump mechanism 5 upward in addition to the outer cylinder 2 as described later.
- the pump mechanism section 5 includes a cylinder 50, a plunger 51, and first and second check valves 52A and 52B. Cylinder 50 and The plunger 51 forms a pressure chamber 53.
- the cylinder 50 is fitted into the upper part of the nozzle 1 so as to be able to reciprocate within a certain stroke range.
- a head cap 65 for pressing operation is mounted on the upper part of the cylinder 50 so as to protrude above the upper end of the outer cylinder 2. When the head cap 65 is pressed downward, the cylinder 50 is also lowered.
- the head cap 65 corresponds to an example of the operating member according to the present invention.
- a panel 61 is provided below the cylinder 50, and the cylinder 50 is configured to be able to return to its original position by the elastic force of the panel 61 after the cylinder 61 is lowered.
- the spring 61 is supported by a sleeve 40 described later.
- the plunger 51 is reciprocally slidably fitted in the cylinder 50. As shown in FIG. 3, the plunger 51 is provided with a pair of arms 51 a connected to the upper part of the outer cylinder 2. Therefore, when the outer cylinder 2 is reciprocated in the axial direction Ng of the housing 1, the plunger 51 reciprocates in the cylinder 50.
- the outer cylinder 2 constitutes an operating mechanism for a plunger according to the present invention.
- the cylinder 50 is provided with a notch for avoiding interference with each arm 51a.
- the plunger 51 is provided with an exhaust port 54 for discharging the air in the pressure chamber 53 to the outside of the housing 1.
- the first check valve 52 A has a flexible flange capable of opening and closing the exhaust port 54, and is attached to the plunger 51.
- the first check valve 52 A allows air flow from the pressure chamber 53 to the outside of the housing 1, but blocks air flow from the outside into the pressure chamber 53.
- an intake port 55 for allowing the air in the housing 1 to flow into the pressure chamber 53 is provided.
- a communication path for connecting the intake port 55 to the inside of the front end of the housing 1 is formed continuously. More specifically, as is well shown in FIG. 2, the intake port 55 is provided with first and second pushers 41, 42 described later.
- the intake port 55 is provided with first and second pushers 41, 42 described later.
- the second check valve 52B opens and closes the intake port 55, and has a flexible flange like the first check valve 52A.
- the second check valve 52B allows air flow from outside the pressure chamber 53 to the inside of the pressure chamber 53, but prevents air flow from the pressure chamber 53 to the outside.
- the latch mechanism 4 includes a sleeve 40, and first and second pushing members 41 and 42 fitted reciprocally in the sleeve 40. are doing.
- the sleeve 40 corresponds to an example of the latch member according to the present invention, and the housing 40 is formed by the flange 40 a being sandwiched between the two sleeves 10 b and 10 c of the housing 1. It is fixed below the cylinder 50 in 1. Near the lower portion of the sleeve 40, a pair of holes 40b for engaging a pair of latch engagement claws 31 formed at the upper end of the lancet holder 3 is provided.
- a spring 62 as a compression coil spring whose upper end is in contact with the second pressing body 42.
- the lancet holder 3 is in a state where the spring 62 is compressed.
- the engagement between the engaging claws 31 and the hole 40b allows the sleeve 40 to latch. This latch can be performed by attaching the lancet L to the lancet holder 3 and then manually pushing the lancet holder 3 upward in the housing 1.
- the first pushing body 41 is reciprocally movable with the cylinder 50 by being connected to the bottom of the cylinder 50.
- the lower part of the first pusher 41 is fitted into the sleeve 40.
- the upper part of the second pushing body 42 is reciprocally fitted in the sleeve 40, and is in contact with the bottom surface of the first pushing body 41 by the elastic force of the spring 62.
- This second pushing body 4 2 The lancet holder 3 has a pair of projections 42 a located above the respective engagement claws 31 of the lancet holder 3, which corresponds to an example of a latch release member according to the invention. Predetermined tapered surfaces corresponding to each other are formed on each projection 4 2 a and each engagement claw 31, and when each projection 42 a descends below the state shown in FIG. 2a presses each engaging claw 31 so as to be deformed in the direction of the center of the housing 1 indicated by the arrow Na, and releases the engagement state between each engaging claw 31 and the sleeve 40. ing.
- a rubber O-ring 41 a is attached to the first pushing body 41 so that airtightness between the first pushing body 41 and the inner peripheral surface of the sleeve 40 can be maintained. It is configured. However, a stepped portion 49 is provided on the inner peripheral surface of the sleeve 40, and when the first pushing body 41 is lowered by pressing the head cap 65, the operation corresponding to the operation is performed. The resistance is configured to change. More specifically, the inner diameter D1 at the upper part of the sleeve 40 is slightly larger than the inner diameter D2 at the lower part.
- the O-ring 41 a is set so as to just reach the step 49. As is clearly shown in FIG. 6, the first pusher 41 can be lowered until the O-ring 41a has passed the portion of the inner diameter D2, but in such a state, The airtight state at the fitting portion between the first pusher 41 and the sleeve 40 is eliminated.
- the lancet holder 3 holding the lancet L is first latched to sleep 40.
- the outer cylinder 2 is reciprocated up and down.
- the outer cylinder 2 is cheaper to hold, and after the outer cylinder 2 is pushed down, the outer cylinder 2 can be raised by the elastic force of the spring 60, so that the operability is good.
- FIG. 7A when the outer cylinder 2 descends in the direction of the arrow Nb, the plunger 51 also descends.
- the second check valve 52B is closed, the first check valve 52A is opened, and the air in the pressure chamber 53 is discharged through the exhaust port 54. It is discharged outside the housing 1.
- the plunger 51 when the outer cylinder 2 subsequently rises in the direction of the arrow Nc, the plunger 51 also rises, so that the volume of the pressure chamber 53 increases, and Produces a negative pressure.
- the first check valve 52A is closed, whereas the second check valve 52B is open. Therefore, a negative pressure is also generated inside the tip of the housing 1, and this negative pressure acts on the skin 99.
- the outer cylinder 2 When the outer cylinder 2 is further reciprocated following the above operation, when the plunger 51 descends, the second check valve 52B is closed, so that the negative pressure inside the tip of the housing 1 is appropriate. Is maintained. Therefore, each time the reciprocating operation of the outer cylinder 2 is repeated, the negative pressure in the pressure chamber 53 and the inside of the tip of the housing 1 can be gradually increased (absolute pressure is reduced). As a result, in the puncture apparatus A, the negative pressure acting on the skin 99 can be appropriately adjusted by increasing or decreasing the number of times the outer cylinder 2 is reciprocated.
- the head cap 65 is pressed down with a finger.
- the cylinder 50 and the first and second pushers 41, 42 are lowered, and the second pusher 42 presses the respective engagement claws 31 of the lancet holder 3, so that the sleeve 50
- the state in which the lancet holder 3 is latched at 40 is released.
- the lancet holder 3 vigorously advances in the direction of the arrow Nd toward the opening 11 at the tip of the housing 1 by the elastic force of the spring 62, and The tip of the cut L pierces the skin 99.
- the tip 8a of the auxiliary member 8 comes into contact with the skin 99, and the auxiliary member 8 And plays a role as a stopper that prevents the lancet L from moving forward beyond a certain level. For this reason, only the portion (the portion having the dimension S) of the distal end portion of the lancet L that protrudes downward from the distal end portion 8a of the auxiliary member 8 penetrates the skin 99.
- the amount of piercing is substantially the same as the above-mentioned dimension S regardless of the size of the dimension in which the skin 99 enters the opening 11 at the tip of the housing 1 due to the above-mentioned negative pressure.
- the above dimension S can be easily increased or decreased by rotating the sleeve 10a. Therefore, the above-described dimension S is changed according to conditions such as whether or not the portion where the lancet L pierces is a portion that does not easily bleed, and the amount of the lancet L actually piercing the skin 99 is appropriately adjusted. be able to. As a result, it is possible to eliminate such a problem that the skin 99 is unnecessarily damaged or the lancet L pierces an insufficient amount to make blood collection difficult.
- the above setting of the dimension S is convenient because it can be performed with reference to the reference line 18a and the scale line 18b shown in FIG.
- the opening diameter of the distal end of the auxiliary member 8 is larger than the main body 98 a of the lancet L, as shown in FIG.
- the entire needle portion 98b of the lancet L can be protruded.
- the protrusion amount S can be made close to zero. Therefore, the range of adjustment of the amount of stab is increased, which is more convenient.
- the O-ring 41a is lowered to a position where the O-ring 41a passes through the portion of the inner diameter D2 of the sleeve 40 as shown in FIG.
- the airtightness of the communication passage from the inside of the front end of the housing 1 to the intake port 55 of the cylinder 50 is released, and the inside of the front end of the housing 1 returns to the atmospheric pressure.
- the housing 1 can be easily separated from the skin 99.
- the above-described release of the negative pressure state can be performed only after the operation of piercing the lancet L into the skin 99. Therefore, it is possible to prevent the negative pressure state acting on the skin 99 from being accidentally released before piercing the lancet L. For this reason, by raising the skin 99 using the above-mentioned negative pressure effect, it is ensured that the lancet L is pierced in a state where the blood circulation in that part is improved.
- the lancet L piercing operation and the operation of releasing the negative pressure state can be performed by pressing down the head cap 65, so that the operation is also simple.
- lancet L is pierced into the skin after negative pressure is generated inside the tip of housing 1, but this puncturing device A is used in the reverse procedure.
- the puncturing apparatus A it is convenient because the user can appropriately select at which time before or after the lancet L pierces the skin the negative pressure is generated.
- FIG. 13 to FIG. 15 show another embodiment of the present invention.
- the same or similar elements as those in the above-described embodiment are denoted by the same reference numerals as those in the above-described embodiment.
- a backing plate portion 85 is formed at the tip 8 a of the auxiliary member 8.
- the contact plate 85 has a substantially disk shape, and faces the distal end surface 98 a ′ of the main body 98 a of the lancet L. This backing plate
- the diameter d l of the hole 88 is adjusted to the body of the lancet L.
- the auxiliary member 8 has two projections 87.
- the tip portions of these two projections 87 are located on the side of the needle portion 98 b of the lancet L and sandwich the needle portion 98 b.
- the auxiliary member preferably has a structure surrounding the entire periphery of the tip of the lancet, but is not necessarily limited thereto. Absent.
- a male screw portion 3 a is provided on the outer periphery of the distal end portion of the lancet holder 3, and the auxiliary member 8 is provided with a female screw portion 86.
- the auxiliary member 8 is directly attached to the lancet holder 3 by screwing the screw portions 3 a and 86. According to such a configuration, when the auxiliary member 8 is rotated, the auxiliary member 8 can be moved in the direction of the arrow Nj relative to the lancet holder 3 by the action of the screw portions 3a and 86.
- the auxiliary member may be directly attached to the lancet holder.
- the mounting structure can be simplified as compared with the case where the auxiliary member is supported by a portion other than the lancet holder.
- the puncture device according to the present invention is not limited to the contents of the above-described embodiment, and the specific configuration of each part can be variously changed in design.
- the lancet may be moved forward by an operation of a predetermined operation mechanism without using a lancet holder for detachably holding the lancet.
- a lancet holder for detachably holding the lancet.
- the lancet can be easily replaced after use, but it need not be.
- the puncture device can be configured as a type of puncture device that does not have a pump mechanism for generating a negative pressure inside the tip of the housing.
- the operating mechanism according to the present invention is basically a lancet Any mechanism may be used as long as it can advance from the inside of the housing toward the opening of the housing.
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT02729543T ATE479389T1 (de) | 2001-01-12 | 2002-01-10 | Punktiervorrichtung |
JP2002555692A JP4098086B2 (ja) | 2001-01-12 | 2002-01-10 | 穿刺装置 |
DE60237504T DE60237504D1 (de) | 2001-01-12 | 2002-01-10 | Punktiervorrichtung |
EP02729543A EP1358844B1 (en) | 2001-01-12 | 2002-01-10 | Puncturing device |
US10/466,297 US6929650B2 (en) | 2001-01-12 | 2002-01-10 | Lancing device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001004963 | 2001-01-12 | ||
JP2001-4963 | 2001-01-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002054952A1 true WO2002054952A1 (fr) | 2002-07-18 |
Family
ID=18873069
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2002/000106 WO2002054952A1 (fr) | 2001-01-12 | 2002-01-10 | Dispositif de perforation |
Country Status (7)
Country | Link |
---|---|
US (1) | US6929650B2 (ja) |
EP (1) | EP1358844B1 (ja) |
JP (1) | JP4098086B2 (ja) |
CN (1) | CN1313052C (ja) |
AT (1) | ATE479389T1 (ja) |
DE (1) | DE60237504D1 (ja) |
WO (1) | WO2002054952A1 (ja) |
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- 2002-01-10 WO PCT/JP2002/000106 patent/WO2002054952A1/ja active Application Filing
- 2002-01-10 EP EP02729543A patent/EP1358844B1/en not_active Expired - Lifetime
- 2002-01-10 US US10/466,297 patent/US6929650B2/en not_active Expired - Lifetime
- 2002-01-10 AT AT02729543T patent/ATE479389T1/de not_active IP Right Cessation
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7736322B2 (en) | 2002-12-27 | 2010-06-15 | Roche Diagnostics Operations, Inc. | Precision depth control lancing tip |
US7976477B2 (en) | 2002-12-27 | 2011-07-12 | Roche Diagnostics Operations, Inc. | Precision depth control lancing tip |
US9554741B2 (en) | 2002-12-27 | 2017-01-31 | Roche Diabetes Care, Inc. | Precision depth control lancing tip |
JP2010534115A (ja) * | 2007-07-21 | 2010-11-04 | キム、スタンリー | ランセットシステム |
US9603563B2 (en) | 2011-04-08 | 2017-03-28 | Owen Mumford Limited | Skin penetration device |
Also Published As
Publication number | Publication date |
---|---|
CN1313052C (zh) | 2007-05-02 |
CN1484513A (zh) | 2004-03-24 |
EP1358844B1 (en) | 2010-09-01 |
US6929650B2 (en) | 2005-08-16 |
JPWO2002054952A1 (ja) | 2004-05-13 |
EP1358844A1 (en) | 2003-11-05 |
ATE479389T1 (de) | 2010-09-15 |
US20040068283A1 (en) | 2004-04-08 |
EP1358844A4 (en) | 2009-06-03 |
DE60237504D1 (de) | 2010-10-14 |
JP4098086B2 (ja) | 2008-06-11 |
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