DE2930982A1 - Accessory for medical operation endoscope - has pump aggregate supplying liq. to coagulation electrode to protect tissue - Google Patents

Accessory for medical operation endoscope - has pump aggregate supplying liq. to coagulation electrode to protect tissue

Info

Publication number
DE2930982A1
DE2930982A1 DE19792930982 DE2930982A DE2930982A1 DE 2930982 A1 DE2930982 A1 DE 2930982A1 DE 19792930982 DE19792930982 DE 19792930982 DE 2930982 A DE2930982 A DE 2930982A DE 2930982 A1 DE2930982 A1 DE 2930982A1
Authority
DE
Germany
Prior art keywords
coagulation
tissue
frequency
liq
coagulation electrode
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.)
Ceased
Application number
DE19792930982
Other languages
German (de)
Inventor
Hans-Dieter Dipl In Reidenbach
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.)
REIDENBACH HANS DIETER DIPL IN
Original Assignee
REIDENBACH HANS DIETER DIPL IN
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 REIDENBACH HANS DIETER DIPL IN filed Critical REIDENBACH HANS DIETER DIPL IN
Priority to DE19792930982 priority Critical patent/DE2930982A1/en
Priority to JP10445680A priority patent/JPS56128148A/en
Publication of DE2930982A1 publication Critical patent/DE2930982A1/en
Ceased legal-status Critical Current

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Classifications

    • 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
    • A61B18/04Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14Probes or electrodes therefor

Abstract

An accessory extends appts. for carrying out directed, tissue-protective, liq.-supported h.f. coagulation in endoscopes uses in medical operations. A pump aggregate with a reservoir is controllable in pressure and flow throughput. The reservoir can contain e.g. distilled, sterilised water. The pump aggregate is integrated into a h.f. surgical appts. so that the liq. can be conveyed to the coagulation electrode. The liq. leaves continuously from bores in the electrical contact surface. The tip of the coagulation electrode is slidable in an axial direction against the force of a suitably-adjusted spring in order to limit the contact pressure automatically.

Description

Apparative Erweiteruriy eines Gergte-Systems zur DurchführungApparative expansion of a device system for implementation

gezielter, gewebeschonender flüssigkeltsunterstützter Hochfrequenz-Koagulatlonen in der operativen Endoskopie Die Erfindung betrifft eine Erweiterung eines Geräte-Systems, welches sich in Verbindung mit den bekannten Hochfrequenz-Chirurgie-Geräten und geeignet modifizierten endoskopischen Koagulationssonden zur gezielten und gewebeschonenden elektro-koagulativen Behandlung von krankhaften Gewebeveränderungen eignet.targeted, tissue-sparing, liquid-assisted high-frequency coagulation ions in operative endoscopy The invention relates to an expansion of a device system, which is in connection with the well-known high-frequency surgery devices and suitable modified endoscopic coagulation probes for targeted and tissue-sparing electro-coagulative treatment of abnormal tissue changes.

Die Möglichkeit, z.B. Schleimhautläsionen mit hochfrequenten elektrischen Strömen zum Zwecke der Blutstillung oder Geweberegeneration thermisch zu veröden, ist ein weltverbreitetes Verfahren in der Medizin. Auch in der operativen Endoskopie werden Hochfrequenz-Chirurgie-Geräte in Verbindung mit geeigneten Knopfelektrodensonden seit wenigen Jahren vereinzelt eingesetzt. Der weiteren Verbreitung dieser Koagulationssysteme standen bislang insbesondere folgende Nachteile entgegen: 1. Ankleben der Koagulationssonde am koagulierten Gewebe mit der Gefahr des Abreißens des Koagels und der möglichen Initiierung neuer Blutungen.The possibility of e.g. mucosal lesions with high-frequency electrical Thermally sclerosing currents for the purpose of hemostasis or tissue regeneration, is a world-wide procedure in medicine. Also in operative endoscopy high-frequency surgical devices are used in conjunction with suitable button electrode probes used sporadically for a few years. The further spread of these coagulation systems So far, the following disadvantages in particular stand in the way: 1. Gluing the coagulation probe on the coagulated tissue with the risk of tearing off the coagulum and the possible Initiation of new bleeding.

2. Bei Blutungen ist in fast allen Fällen die eigentliche Blutungsquelle durch bedeckendes Blut nicht einsehbar und die Koagulationselektrode kann nicht gezielt appliziert werden.2. In almost all cases, bleeding is the actual source of bleeding not visible through covering blood and the coagulation electrode cannot can be applied in a targeted manner.

3. Im Laufe der Koagulation wurde das Gewebe auf relativ hohe Temperaturen erhitzt, ausgetrocknet und meist auch karbonisiert, wodurch die elektrischen Eigenschaften derart verändert wurden, daß eine gezielte Dosierung der zu applizierenden elektrischen Hochfrequ#enzenergie nahezu unmöglich wurde. Hieraus resultierte in vielen Fällen eine große räumliche Ausdehnung der Geweben#ek#rose, welche insbesondere bei Schleimhautläsionen ein relativ großes Risiko einer Primär- oder Sekundärperforation beinhaltete.3. In the course of coagulation, the tissue was heated to relatively high temperatures heated, dried out and usually also carbonized, which increases the electrical properties were changed in such a way that a targeted dosage of the electrical to be applied High frequency energy became almost impossible. This resulted in many cases a large spatial expansion of the tissues # ek # rose, which is particularly evident in the case of mucosal lesions involved a relatively high risk of primary or secondary perforation.

Der Erfindung liegt die Aufgabe zugrunde, durch eine gezielte apparative Erweiterung herkömmlicher endoskopischer Elektrokoagulations-Systeme ein Geräte-System zu realisieren, welches unter Vermeidung der erwähnten Nachteile herkömmlicher Systeme eine gezielte und gewebeschonende Hochfrequenzkoagulation räumlich und thermisch begrenzten Ausmaßes in der operativen Endoskopie durchzuführen gestattet.The invention is based on the object through a targeted apparatus Extension of conventional endoscopic electrocoagulation systems with a device system to realize, which while avoiding the disadvantages of conventional systems mentioned a targeted and tissue-sparing high-frequency coagulation spatially and thermally to a limited extent in operative endoscopy.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß herkömmliche endoskopische Hochfrequenz-Chirurgiegeräte-Systeme um folgende Komponenten erweitert werden: 1. Eine Koagualtionssonde, welche an ihrer elektrischen Gewebekontaktfläche ein System von Bohrungen aufweist, durch welches vor,während und nach der Elektrokoagualtion kontinuierlich eine geeignete Flüssigkeit, z.B. destilliertes und keimfreies Wasser, ausströmt. Der Flüssigkeitsstrom verhindert die übermäßige Erhitzung, insbesondere die Karbonisation des Gewebes, d.h. die Temperaturen bleiben praktisch unter dem jeweiligen Flüssigkeitssiedepunkt. Bei blutenden Läsionen wird die effektive elektrische Kontaktfläche der Hochfrequenzsonde auf ihre geometrische Ausdehnung begrenzt, weil das aus der Blutungsquelle austretende, elektrisch relativ gut leitende Blut verdünnt bzw. zur Seite gespült wird. Dadurch werden auch optimale Sichtverhältnisse geschaffen, welche die gezielte und räumlich selektive koagulative Behandlung der Blutungsquelle gestatten. Das gleichzeitige Yorhandensein mefirerer Bohrungen in der Sonden-Kontaktfläche hat zum Ziel, daß auch während des Andrückens der Elektrodenspitze bei der Koagulation der Flüssigkeitsstrom nicht vollständig unterbrochen wird. In der Praxis hat sich dabei eine gleichmäßige Yerteilung mehrerer Bohrungen über die Elektroden-Kontaktfläche als ausreichend erwiesen.This object is achieved according to the invention in that conventional endoscopic high-frequency surgical device systems expanded by the following components will: 1. A coagulation probe, which is connected to its electrical Tissue contact surface has a system of holes through which before, during and, after electrocoagulation, a suitable liquid, e.g. distilled and sterile water, flows out. The liquid flow prevents the excessive heating, especially the carbonization of the tissue, i.e. the temperatures remain practically below the respective boiling point of the liquid. For bleeding lesions the effective electrical contact area of the high-frequency probe is based on its geometric Expansion is limited because that which emerges from the source of bleeding is electrically relative Well conductive blood is thinned or flushed aside. This will also be optimal Visual conditions created, which the targeted and spatially selective coagulative Allow treatment of source of bleeding. The simultaneous presence of mefirerer The aim of drilling in the probe contact surface is that also during the pressing of the electrode tip during coagulation, the liquid flow is not complete is interrupted. In practice, this has resulted in an even distribution of several Drilling through the electrode contact surface has proven to be sufficient.

2. Ein in die Elektrodenspitze integrierter Mechanismus zur automatischen Begrenzung des Anpreßdruckes der Sonde auf die Gewebeoberfläche. Hierbei wird die Sondenspitze als metallische Hülse ausgeführt, welche sich gegen eine geeignete Feder über einen zum Zwecke der Flüssigkeitszuführung durchbohrten metallischen Zylinder bewegen läßt. Die Begrenzung des Anpreßdruckes erweist sich als vorteilhaft, weil Experimente gezeigt haben, daß die Gefahr einer Perforation bei zu starkem Sondenandruck und der damit verbundenen Verringerung der Schleimhautdicke erheblich vergrößert ist.2. A mechanism integrated into the electrode tip for automatic Limitation of the contact pressure of the probe on the tissue surface. Here the Probe tip designed as a metallic sleeve, which is against a suitable Spring over a metal pierced for the purpose of supplying liquid Can move the cylinder. Limiting the contact pressure proves to be advantageous, because experiments have shown that the risk of perforation is too strong Probe pressure and the associated reduction in the thickness of the mucous membrane is enlarged.

3. Eine Pumpvorrichtung zur im Druck und in der Durchflußmenge genau dosierbaren Flüssigkeitszufuhr in die Sondenspitze, welche in bekannter Weise über einen PTFE-Schlauch, der auch die elektrischen Zuleitungen enthält, mit der Pumpe verbunden ist. Mit Hilfe einer Schlauchpumpe kann die Keimfreiheit der Flüssigkeitszufuhr vom Reservoir bis zur Sondenspitze gewährleistet werden.3. A pumping device for accurate pressure and flow rate dosable liquid supply into the probe tip, which in a known manner via a PTFE hose, which also contains the electrical supply lines, with the pump connected is. With the help of a peristaltic pump, the sterility of the fluid supply can be made from the reservoir to the probe tip.

Die mit der Erfindung erzielten Vorteile bestehen darin, daß 1. blutende Läsionen vor und während der Behandlung von störendem Blut freigespült werden, 2. die Gewebetemperatur bei der Koagulation geeignet klein gehalten wird, 3. ein Anhaften der Elektrode am koagulierten Gewebe verhindert wird, 4. die räumliche Ausdehnung der Nekrose begrenzt wird, 5. der Anpreßdruck der Sondenspitze klein gehalten wir#d und 6. die Perforationsgefahr weitgehend vermieden werden kann.The advantages achieved by the invention are that 1. bleeding Lesions are flushed free of interfering blood before and during treatment, 2. the tissue temperature during coagulation is kept suitably low, 3. adhesion of the electrode to the coagulated tissue is prevented, 4. spatial The extent of the necrosis is limited, 5. the contact pressure of the probe tip is small We kept # d and 6. the risk of perforation can be largely avoided.

Eine Erweiterung des Geräte-Systems der beschriebenen Art wurde von uns für die flüssigkeitsunterstützte elektrokoagulative endoskopische Stillung von gastrointestinalen Blutungen zusammengestellt und bereits klinisch erfolgreich eingesetzt. Das System besteht erfindungsgemäß aus einem in Druck und Durchflußmenge steuerbaren Schlauchpumpenaggregat, welches aus einem keimfreien Reservoir destilliertes Wasser über einen sterilisierten PTFE-(Teflon)Schlauch in eine wie vorstehend beschrieben ausgeführte metallische Sonde mit Andrucksbegrenzung gepumpt wird. Diese Sonde mit einem Außendurchmesser von 2,4 mm kann An den Arbeitskanal handelsüblicher Endoskope eingeführt werden. Das System wird über einen zweistufigen Fußschalter gesteuert, d.h. in der ersten Schaltstufe erfolgt die Wasserzufuhr während in der zweiten Schaltstufe zusätzlich der Hochfrequenzstrom über die ebenfalls im Teflonschlauch geführten elektrischen Zuleitungen appliziert wird.An extension of the device system of the type described was made by us for the liquid-assisted electrocoagulative endoscopic breastfeeding of gastrointestinal bleeding compiled and already successfully used clinically. According to the invention, the system consists of a controllable pressure and flow rate Peristaltic pump unit, which is distilled water from a sterile reservoir via a sterilized PTFE (Teflon) tube into a tube as described above executed metallic probe with pressure limitation is pumped. This probe with an outer diameter of 2.4 mm can be attached to the working channel of commercially available endoscopes to be introduced. The system is controlled by a two-stage foot switch, i.e. in the first switching stage the water is supplied while in the second switching stage In addition, the high-frequency current via the also routed in the Teflon hose electrical leads is applied.

Claims (2)

Patentansprüche: 9 Apparative Erweiterung eines Geräte-Systems zur Durchführung gezielter und gewebeschonender, flüssigkeitsunterstützter Hochfrequenzkoagulationen in der operativen Endoskopie, dadurch gekennzeichnet, daß ein im Druck und in der Durchflußmenge steuerbares Pumpaggregat mit Reservoir für eine geeignete Flüssigkeit, z.B. destilliertes, keimfreies Wasser, in ein Hochfrequenz-Chirurgie-Gerät derart integriert wird, daß die Flüssigkeit der Koagulationselektrode zugeführt werden kann, aus welcher sie zur Durchführung einer flüssigkeitsunterstützten Hochfrequenzkoagulation aus einem System von geeignet angeordneten Bohrungen aus der elektrischen Kontaktfläche kontinuierlich austritt. Claims: 9 Apparatus expansion of a device system for Carrying out targeted and tissue-sparing, fluid-assisted high-frequency coagulations in operative endoscopy, characterized in that one in print and one in the Flow rate controllable pump unit with reservoir for a suitable liquid, e.g. distilled, germ-free water, in a high-frequency surgical device like this is integrated so that the liquid can be fed to the coagulation electrode can, from which it is used to carry out a liquid-assisted high-frequency coagulation from a system of suitably arranged bores from the electrical contact surface continuously exits. 2. Apparative Erweiterung eines Geräte-Systems zur Durchführung gezielter und gewebeschonender, flüssigkeitsunterstützter Hochfrequenzkoagulationen in der operativen Endoskopie nach Anspruch 1, dadurch gekennzeichnet, daß zur automatischen Begrenzung des Anpreßdruckes die Spitze der Koagulationselektrode gegen einen geeignet eingestellten Federdruck In axialer Richtung verschiebbar ausgeführt wird. 2. Apparatus expansion of a device system to carry out more targeted and tissue-conserving, fluid-assisted high-frequency coagulations in the operative endoscopy according to claim 1, characterized in that for automatic Limiting the contact pressure the tip of the coagulation electrode against a suitable one set spring pressure is designed to be displaceable in the axial direction.
DE19792930982 1979-07-31 1979-07-31 Accessory for medical operation endoscope - has pump aggregate supplying liq. to coagulation electrode to protect tissue Ceased DE2930982A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19792930982 DE2930982A1 (en) 1979-07-31 1979-07-31 Accessory for medical operation endoscope - has pump aggregate supplying liq. to coagulation electrode to protect tissue
JP10445680A JPS56128148A (en) 1979-07-31 1980-07-31 Ultrasonic coagulation method and apparatus in endoscope operation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792930982 DE2930982A1 (en) 1979-07-31 1979-07-31 Accessory for medical operation endoscope - has pump aggregate supplying liq. to coagulation electrode to protect tissue

Publications (1)

Publication Number Publication Date
DE2930982A1 true DE2930982A1 (en) 1981-02-05

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DE (1) DE2930982A1 (en)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3642077A1 (en) * 1986-12-10 1988-06-23 Storz Karl Gmbh & Co Device with a generator and an electrode for high-frequency cutting and/or coagulating or for laser applications
US4936301A (en) * 1987-06-23 1990-06-26 Concept, Inc. Electrosurgical method using an electrically conductive fluid
US4943290A (en) * 1987-06-23 1990-07-24 Concept Inc. Electrolyte purging electrode tip
EP0400288A2 (en) * 1989-05-27 1990-12-05 Richard Wolf GmbH Bipolar coagulation apparatus
WO1992006642A1 (en) * 1990-10-17 1992-04-30 Boston Scientific Corporation Surgical instrument and method
WO1994010925A1 (en) * 1992-11-13 1994-05-26 American Cardiac Ablation Co., Inc. Fluid cooled electrosurgical cauterization system
US5944715A (en) 1996-06-20 1999-08-31 Gyrus Medical Limited Electrosurgical instrument
US6004319A (en) 1995-06-23 1999-12-21 Gyrus Medical Limited Electrosurgical instrument
US6013076A (en) 1996-01-09 2000-01-11 Gyrus Medical Limited Electrosurgical instrument
US6015406A (en) 1996-01-09 2000-01-18 Gyrus Medical Limited Electrosurgical instrument
US6027501A (en) 1995-06-23 2000-02-22 Gyrus Medical Limited Electrosurgical instrument
US6090106A (en) 1996-01-09 2000-07-18 Gyrus Medical Limited Electrosurgical instrument
US6093186A (en) 1996-12-20 2000-07-25 Gyrus Medical Limited Electrosurgical generator and system
US6210405B1 (en) 1996-06-20 2001-04-03 Gyrus Medical Limited Under water treatment
US6261286B1 (en) 1995-06-23 2001-07-17 Gyrus Medical Limited Electrosurgical generator and system
US6277114B1 (en) 1998-04-03 2001-08-21 Gyrus Medical Limited Electrode assembly for an electrosurical instrument
US6565561B1 (en) 1996-06-20 2003-05-20 Cyrus Medical Limited Electrosurgical instrument
US6780180B1 (en) 1995-06-23 2004-08-24 Gyrus Medical Limited Electrosurgical instrument

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8986300B2 (en) * 2012-06-25 2015-03-24 Biosense Webster (Israel) Ltd. Irrigated electrodes with enhanced heat conduction

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3642077A1 (en) * 1986-12-10 1988-06-23 Storz Karl Gmbh & Co Device with a generator and an electrode for high-frequency cutting and/or coagulating or for laser applications
US4936301A (en) * 1987-06-23 1990-06-26 Concept, Inc. Electrosurgical method using an electrically conductive fluid
US4943290A (en) * 1987-06-23 1990-07-24 Concept Inc. Electrolyte purging electrode tip
EP0400288A2 (en) * 1989-05-27 1990-12-05 Richard Wolf GmbH Bipolar coagulation apparatus
EP0400288A3 (en) * 1989-05-27 1991-07-10 Richard Wolf GmbH Bipolar coagulation apparatus
WO1992006642A1 (en) * 1990-10-17 1992-04-30 Boston Scientific Corporation Surgical instrument and method
WO1994010925A1 (en) * 1992-11-13 1994-05-26 American Cardiac Ablation Co., Inc. Fluid cooled electrosurgical cauterization system
US6056746A (en) 1995-06-23 2000-05-02 Gyrus Medical Limited Electrosurgical instrument
US6364877B1 (en) 1995-06-23 2002-04-02 Gyrus Medical Limited Electrosurgical generator and system
US6027501A (en) 1995-06-23 2000-02-22 Gyrus Medical Limited Electrosurgical instrument
US6004319A (en) 1995-06-23 1999-12-21 Gyrus Medical Limited Electrosurgical instrument
US6780180B1 (en) 1995-06-23 2004-08-24 Gyrus Medical Limited Electrosurgical instrument
US6174308B1 (en) 1995-06-23 2001-01-16 Gyrus Medical Limited Electrosurgical instrument
US6416509B1 (en) 1995-06-23 2002-07-09 Gyrus Medical Limited Electrosurgical generator and system
US6261286B1 (en) 1995-06-23 2001-07-17 Gyrus Medical Limited Electrosurgical generator and system
US6013076A (en) 1996-01-09 2000-01-11 Gyrus Medical Limited Electrosurgical instrument
US6015406A (en) 1996-01-09 2000-01-18 Gyrus Medical Limited Electrosurgical instrument
US6090106A (en) 1996-01-09 2000-07-18 Gyrus Medical Limited Electrosurgical instrument
US6234178B1 (en) 1996-01-09 2001-05-22 Gyrus Medical Limited Electrosurgical instrument
US5944715A (en) 1996-06-20 1999-08-31 Gyrus Medical Limited Electrosurgical instrument
US6210405B1 (en) 1996-06-20 2001-04-03 Gyrus Medical Limited Under water treatment
US6482202B1 (en) 1996-06-20 2002-11-19 Gyrus Medical Limited Under water treatment
US6565561B1 (en) 1996-06-20 2003-05-20 Cyrus Medical Limited Electrosurgical instrument
US6093186A (en) 1996-12-20 2000-07-25 Gyrus Medical Limited Electrosurgical generator and system
US6277114B1 (en) 1998-04-03 2001-08-21 Gyrus Medical Limited Electrode assembly for an electrosurical instrument

Also Published As

Publication number Publication date
JPS56128148A (en) 1981-10-07

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