DE4129691C2 - catheter - Google Patents

catheter

Info

Publication number
DE4129691C2
DE4129691C2 DE4129691A DE4129691A DE4129691C2 DE 4129691 C2 DE4129691 C2 DE 4129691C2 DE 4129691 A DE4129691 A DE 4129691A DE 4129691 A DE4129691 A DE 4129691A DE 4129691 C2 DE4129691 C2 DE 4129691C2
Authority
DE
Germany
Prior art keywords
catheter
pressure
temperature
channel
balloon
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE4129691A
Other languages
German (de)
Other versions
DE4129691A1 (en
Inventor
Alfons Prof Dr Med Hofstetter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE4129691A priority Critical patent/DE4129691C2/en
Publication of DE4129691A1 publication Critical patent/DE4129691A1/en
Application granted granted Critical
Publication of DE4129691C2 publication Critical patent/DE4129691C2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00Catheters; Hollow probes
    • A61M25/10Balloon catheters
    • A61M25/1011Multiple balloon catheters
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00017Electrical control of surgical instruments
    • A61B2017/00022Sensing or detecting at the treatment site
    • A61B2017/00084Temperature
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00005Cooling or heating of the probe or tissue immediately surrounding the probe
    • A61B2018/00011Cooling or heating of the probe or tissue immediately surrounding the probe with fluids
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/06Measuring instruments not otherwise provided for
    • A61B2090/064Measuring instruments not otherwise provided for for measuring force, pressure or mechanical tension
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M29/00Dilators with or without means for introducing media, e.g. remedies
    • A61M29/02Dilators made of swellable material

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Molecular Biology (AREA)
  • Medical Informatics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Vascular Medicine (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Child & Adolescent Psychology (AREA)
  • Biophysics (AREA)
  • Pulmonology (AREA)
  • Anesthesiology (AREA)
  • Hematology (AREA)
  • Media Introduction/Drainage Providing Device (AREA)

Description

Die vorliegende Erfindung betrifft einen Katheter, insbesonde­ re zum Schutz der Harnröhrenwand bei der interstitiellen Ther­ mokoagulation von Prostatatumoren, mit einem ersten Kanal, welcher zur Harnblasenfüllung verwendet wird, und einem mit einem Kühlmittel gefüllten zweiten Kanal, der in einen ersten proximalen Ballon zur Aufnahme des Kühlmittels mündet, und einem dritten Kanal, welcher am distalen Katheterende in einen zweiten distalen Ballon mündet, der mit einem flüssigen und/oder gasförmigen Medium befüllbar ist und zur Fixierung des Katheters am Blasenauslaß dient, wobei die Kanäle inein­ ander und/oder nebeneinander geführt sind, und Temperaturfühler.The present invention relates to a catheter, in particular right to protect the urethral wall in the interstitial therm mocoagulation of prostate tumors, with a first channel, which is used for bladder filling, and one with a coolant-filled second channel that into a first proximal balloon for receiving the coolant, and a third channel, which at the distal end of the catheter into one second distal balloon that opens with a liquid and / or gaseous medium can be filled and for fixation of the catheter at the bladder outlet, with the channels into one another are performed differently and / or side by side, and Temperature sensor.

Verschiedenartige Katheter für die Thermokoagulation von Pro­ statatumoren sind bereits aus dem Stand der Technik bekannt. So beschreibt die EP 0 370 890 A1 einen Mehrwegekatheter mit einer Wärmeerzeugungsvorrichtung. Dieser Katheter weist ineinander geführte Kanäle zur Kühlung des Katheters und der Harnröhrenwand sowie für die Befüllung eines Ballons mit einer Füllflüssigkeit zur Fixierung des Katheters in der Blase und die Aufnahme eines Temperaturfühlers zur Messung der Tem­ peratur im oder an der Außenseite des Katheters auf.Various types of catheters for thermocoagulation from Pro stators are already known from the prior art. For example, EP 0 370 890 A1 describes a multi-way catheter a heat generating device. This catheter points interlocking channels for cooling the catheter and the Urethral wall and for filling a balloon with a Filling liquid for fixing the catheter in the bladder and the inclusion of a temperature sensor for measuring the tem temperature in or on the outside of the catheter.

Nachteilig an diesem Stand der Technik ist jedoch, daß hier nur Temperaturmessungen vorgenommen werden können. Gerade bei der interstitiellen Thermokoagulation (ITK) ist es aber erfor­ derlich, neben Temperaturmessungen auch Druckmessungen durch­ zuführen, um eventuell auftretende Temperatur- und/oder Druck­ schädigungen an beispielsweise der Harnröhrenwand zu verhin­ dern.A disadvantage of this prior art, however, is that here only temperature measurements can be made. Especially with interstitial thermocoagulation (ITK) is required not only temperature measurements but also pressure measurements feed to any temperature and / or pressure that may occur to prevent damage to the urethral wall, for example other.

Aufgabe der vorliegenden Erfindung ist es daher, einen Kathe­ ter der eingangs genannten Art bereitzustellen, der eine gleichzeitige Temperatur- und Druckmessung sowie eine Tempe­ ratur- und Druckregelung erlaubt.The object of the present invention is therefore a Kathe To provide ter of the type mentioned, the one simultaneous temperature and pressure measurement as well as a tempe Temperature and pressure control allowed.

Diese Aufgabe wird dadurch gelöst, daß der erfindungsgemäße Katheter Druckfühler aufweist, wobei die Temperaturfühler und die Druckfühler über ein leitfähiges Material mit Druck- und Temperaturmeßgeräten sowie Regelungsgeräten für Temperatur und Druck außerhalb des Katheters verbunden sind. Die Druck- und Temperaturfühler sind zudem an der Oberfläche eines ersten Ballones zur Aufnahme des Kühlmittels befestigt und mit einer kunststoffartigen Schutzschicht überzogen. Damit ist es erfindungsgemäß möglich, Temperatur- und Druckschäden an bei­ spielsweise der Harnröhrenwand während des operativen Eingrif­ fes zu vermeiden.This object is achieved in that the invention Has catheter pressure sensor, the temperature sensor and the pressure sensors over a conductive material with pressure and Temperature measuring devices and control devices for temperature and Pressure outside the catheter are connected. The printing and Temperature sensors are also on the surface of a first one Balloons attached to hold the coolant and with a plastic-like protective layer coated. So that's it possible according to the invention, temperature and pressure damage at for example, the urethral wall during surgery to avoid fes.

Vorteilhafterweise besteht der erfindungsgemäße Anmeldungs­ gegenstand aus Kunststoff.The registration according to the invention advantageously exists object made of plastic.

Weitere Einzelheiten und Vorteile der Erfindung er­ geben sich aus dem im folgenden beschriebenen Ausführungsbei­ spiel.Further details and advantages of the invention he give themselves from the execution described below game.

Die Figur zeigt eine schematische Darstellung des erfindungs­ gemäßen Katheters 10. Der Katheter 10 ist als Dreiwegkatheter ausgebildet. Dabei ist ein erster Kanal 12, welcher zur Harnblasenfüllung verwendet wird, mit einem mit einem Kühlmittel gefüllten zweiten Kanal 14, der in einem ersten proximalen Ballon 22 zur Aufnahme des Kühlmittels mündet, und mit einem dritten Kanal 16, welcher am distalen Katheterende 20 in einen zweiten distalen Ballon 18 mündet, der mit einem flüssigen und/oder gasförmigen Medium befüllbar ist und zur Fixierung des Katheters 10 am Blasenauslaß dient, ineinander und/oder nebeneinander geführt. Ein leitfähiges Material (nicht dargestellt) verbindet Druck- und Temperaturfühler 28, 30, welche an der Oberfläche des ersten Ballones 22 befestigt und mit einer kunststoffartigen Schutzschicht 26 überzogen sind, mit Druck- und Temperaturmeßgeräten (M1, M2, M3) sowie Regelungsgeräten für Temperatur und Druck (nicht dargestellt) außerhalb des Katheters 10 verbunden.The figure shows a schematic representation of the catheter 10 according to the invention. The catheter 10 is designed as a three-way catheter. There is a first channel 12 , which is used for urinary bladder filling, with a second channel 14 filled with a coolant, which opens into a first proximal balloon 22 for receiving the coolant, and with a third channel 16 , which at the distal catheter end 20 into one second distal balloon 18 , which can be filled with a liquid and / or gaseous medium and serves to fix the catheter 10 at the bladder outlet, is guided into one another and / or next to one another. A conductive material (not shown) connects pressure and temperature sensors 28 , 30 , which are attached to the surface of the first balloon 22 and are covered with a plastic-like protective layer 26 , with pressure and temperature measuring devices (M 1 , M 2 , M 3 ) and Control devices for temperature and pressure (not shown) connected outside the catheter 10 .

Bei Applizierung von Wärme mittels einer Temperaturquelle an erkranktes Gewebe werden mittels der Druck- und Temperatur­ fühler 28, 30 die Druck- und Temperaturbedingungen im umge­ benden, nicht erkrankten und damit nicht zu behandelnden Ge­ webe gemessen und kontrolliert. Der Katheter 10 verhindert eine Überhitzung und somit eine Schädigung dieses Gewebes. Gleichzeitig wird die Druckentwicklung an dieser Stelle kon­ trolliert, so daß auch eine mechanische Schädigung durch zu starke Druckbelastung des nicht zu behandelnden Gewebes, z. B. durch die Wärmeerzeugungsvorrichtung oder durch die Volumen­ zunahme des wärmebehandelten Tumorgewebes, verhindert wird.When applying heat to a diseased tissue using a temperature source, the pressure and temperature conditions in the surrounding, non-diseased and therefore untreated tissue are measured and controlled by means of the pressure and temperature sensors 28 , 30 . The catheter 10 prevents overheating and thus damage to this tissue. At the same time, the pressure development is checked at this point, so that mechanical damage due to excessive pressure load on the tissue not to be treated, e.g. B. is prevented by the heat generating device or by the volume increase in the heat-treated tumor tissue.

Der erfindungsgemäße Katheter 10 besteht aus Kunststoff, bei­ spielsweise Silikon oder Latex oder Gummi oder Polyurethan.The catheter 10 according to the invention consists of plastic, for example silicone or latex or rubber or polyurethane.

Claims (2)

1. Katheter, insbesondere zum Schutz der Harnröhrenwand bei der interstitiellen Thermokoagulation von Prostatatumo­ ren, mit einem ersten Kanal (12), welcher zur Harnblasen­ füllung verwendet wird, und einem mit einem Kühlmittel gefüllten zweiten Kanal (14), der in einen ersten proxi­ malen Ballon (22) zur Aufnahme des Kühlmittels mündet, und einem dritten Kanal (16), welcher am distalen Kathe­ terende (20) in einen zweiten distalen Ballon (18) mün­ det, der mit einem flüssigen und/oder gasförmigen Medium befüllbar ist und zur Fixierung des Katheters (10) am Blasenauslaß dient, wobei die Kanäle (12, 14, 16) in­ einander und/oder nebeneinander geführt sind, und Temperaturfühlern (28), dadurch gekennzeichnet, daß der Katheter (10) Druckfühler (30) aufweist, wobei die Temperaturfühler (28) und die Druckfühler (30) über ein leitfähiges Material mit Druck- und Temperatur­ meßgeräten (M1, M2, M3) sowie Regelungsgeräten für Temperatur und Druck außerhalb des Katheters (10) verbunden sind und die Druck- und Temperaturfühler (28, 30) an der Oberfläche des ersten Ballones (22) befestigt und mit einer kunststoffartigen Schutzschicht (26) überzogen sind.1. Catheter, in particular to protect the urethral wall in the interstitial thermocoagulation of prostate tumors, with a first channel ( 12 ), which is used for bladder filling, and a coolant-filled second channel ( 14 ), which paint in a first proximal Balloon ( 22 ) for receiving the coolant opens, and a third channel ( 16 ), which at the distal end of the catheter ( 20 ) opens into a second distal balloon ( 18 ), which can be filled with a liquid and / or gaseous medium and for The catheter ( 10 ) is fixed to the bladder outlet, the channels ( 12 , 14 , 16 ) being guided in one another and / or next to one another, and temperature sensors ( 28 ), characterized in that the catheter ( 10 ) has pressure sensors ( 30 ). wherein the temperature sensors ( 28 ) and the pressure sensors ( 30 ) over a conductive material with pressure and temperature measuring devices (M 1 , M 2 , M 3 ) and control devices for temperature and Dr They are connected outside the catheter ( 10 ) and the pressure and temperature sensors ( 28 , 30 ) are attached to the surface of the first balloon ( 22 ) and are covered with a plastic-like protective layer ( 26 ). 2. Katheter nach Anspruch 1, dadurch gekennzeichnet, daß der Katheter (10) aus Kunststoff besteht.2. Catheter according to claim 1, characterized in that the catheter ( 10 ) consists of plastic.
DE4129691A 1991-09-08 1991-09-08 catheter Expired - Fee Related DE4129691C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE4129691A DE4129691C2 (en) 1991-09-08 1991-09-08 catheter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4129691A DE4129691C2 (en) 1991-09-08 1991-09-08 catheter

Publications (2)

Publication Number Publication Date
DE4129691A1 DE4129691A1 (en) 1993-03-11
DE4129691C2 true DE4129691C2 (en) 1999-03-11

Family

ID=6440032

Family Applications (1)

Application Number Title Priority Date Filing Date
DE4129691A Expired - Fee Related DE4129691C2 (en) 1991-09-08 1991-09-08 catheter

Country Status (1)

Country Link
DE (1) DE4129691C2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108210089B (en) * 2018-01-26 2023-06-16 浙江大学 Air inflation type channel device for taking out tumor specimen through anus after colorectal operation

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0370890A1 (en) * 1988-11-21 1990-05-30 Technomed Medical Systems Apparatus for the surgical treatment of tissues by hyperthermia, preferably the prostate, equipped with heat protection means preferably comprising means forming radioreflecting screen
US4950267A (en) * 1987-11-27 1990-08-21 Olympus Optical Co., Ltd. Laser beam treatment device for an endoscope

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4950267A (en) * 1987-11-27 1990-08-21 Olympus Optical Co., Ltd. Laser beam treatment device for an endoscope
EP0370890A1 (en) * 1988-11-21 1990-05-30 Technomed Medical Systems Apparatus for the surgical treatment of tissues by hyperthermia, preferably the prostate, equipped with heat protection means preferably comprising means forming radioreflecting screen

Also Published As

Publication number Publication date
DE4129691A1 (en) 1993-03-11

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Legal Events

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8110 Request for examination paragraph 44
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee