Bipolares Coagulationsinstrument für Endoskope Die Erfindung beziehtsich auf ein bipolares Coagulationsinstrument für Endoskope zum Abtragen von Polypenz.B. Bipolar coagulation instrument for endoscopes The invention relates toon a bipolar coagulation instrument for endoscopes to remove polypse.g.
im Magen, Duodenum, Rektum, im Larynx oder Nasenraum, dessen Elektrodenein Hochfrequenzstrom zur Blutstillung zugeleitet wird.in the stomach, duodenum, rectum, larynx or nasal cavity, its electrodesa high-frequency current is supplied to stop the bleeding.
Bei chirurgischen Operationen kommt in neuerer Zeit das bipolare Coagulierenzur Anwendung. Hierbei wird z.B.Bipolar coagulation has recently been used in surgical operationsto use. Here, e.g.
jedem der beiden gegeneinander isolierten Schenkel einer Pinzette,die hier als Elektroden dienen, der Hochfrequenzstrom zugeführt. Das zwischen denSchenkeln liegendeGewebe wird coaguliert, sobald sich die Schenkelin dem erforderlichen geringen Abstand voneinander befinden.each of the two mutually isolated legs of a pair of tweezers,which serve as electrodes here, the high-frequency current is supplied. That between theThighs lyingTissue is coagulated as soon as the thighs expandare at the required small distance from each other.
Dadurch ergibt sich der Vorteil, daß durch die bipolare Arbeitsweiseder Hochfrequenzstrom um ein vielfaches geringer sein kann als bei der unipolarenTechnik. Es ist auch die Gefahr von Verbrennungen aus diesem Grunde beseitigt.This has the advantage that the bipolar mode of operationthe high-frequency current can be many times less than with the unipolar oneTechnology. It also eliminates the risk of burns for this reason.
Es sind weiter unipolare Coagulations-Schlingen zum Abtragen von Polypenund dgl. bekannt (USA-PS 3 805 791), wobei sich aber der schwere Nachteil ergibt,daß das Anlegen einer inaktiven Patientin-Elektrode erforderlich ist. Hierbei mußder Strom zwischen der inaktiven Patienten-Elektrode und der aktiven Elektrode derCoagulations-Schlinge und daher durch den Körper des Patienten fließen. Dabei könnenu.a. unkontrollierte Nebenströme auftreten, die an ungewollten Stellen Gewebe schädigungenverursachen.There are also unipolar coagulation loops for removing polypsand the like known (USA-PS 3 805 791), but there is the serious disadvantagethat the application of an inactive patient electrode is necessary. Here mustthe current between the inactive patient electrode and the active electrode of theCoagulation loop and therefore flow through the patient's body. Here you canAmong other things, uncontrolled side currents occur that damage tissue in unwanted placescause.
Der Erfindung liegt deshalb die Aufgabe zugrunde, das bipolare Coagulationsinstrumentder eingangs erwähnten Artso zu verbessern, daß es bei den bekanntenSchlingen der erwähnten Art Anwendung finden kann, um sich dieser wähnten großenVorteile der bipolaren Arbeitsweise nutzbar zu machen.The invention is therefore based on the object of the bipolar coagulation instrumentof the type mentioned at the beginningto improve so that it is with the knownLoops of the type mentioned can be used to protect these supposedly large onesTo harness the advantages of the bipolar way of working.
Die Lösung dieser Aufgabe durch die Erfindung besteht darin, daß diebeiden Elektroden eine Schlinge bilden, indem sie an ihren Enden mittels eines Isolierstückesmiteinander verbunden sind.The solution to this problem by the invention is that theBoth electrodes form a loop by using an insulating piece at their endsare connected to each other.
Dadurch kann die bipolare Arbeitsweise zur Anwendung gelangen, ohnedaß die eingangs erwähnten Nachteile auftreten.This allows the bipolar mode of operation to be used withoutthat the disadvantages mentioned occur.
In weiterer Ausgestaltung der Erfindung ist vorgesehen, daß die Elektrodenauf ihrer ganzen Länge mit Ausnahme eines Bereiches in der Nähe des Isolierstückesmit einer Isolierschicht versehen sind. Auf diese Weise arbeitet nur der distaleBereich der Schlinge als bipolares Coagulationsinstrument, weil die beiden Schenkelim übrigen voneinander isoliert sind und somit als aktiveund inaktiveElektrode wirken. Hierbei fließt der Strom nur unmittelbar zwischen den beiden Schenkelnder Schlinge und kann nur auf das von der Schlinge unter optischer Kontrolle erfaßteGewebestück wirken. Der Strom fließt also nicht mehr durch den Körper des Patienten,und ungewollte Gewebeschäden sind ausgeschlossen.In a further embodiment of the invention it is provided that the electrodesalong their entire length with the exception of an area near the insulating pieceare provided with an insulating layer. This way, only the distal one worksArea of the loop as a bipolar coagulation instrument because the two legsare otherwise isolated from each other and thus as activeand inactiveElectrode act. The current only flows directly between the two legsthe loop and can only access what is detected by the loop under optical controlWork piece of tissue. The current no longer flows through the patient's body,and unwanted tissue damage are excluded.
Dadurch, daß bei der bevorzugten Ausführungsform der Schlingendrahtnur am distalen Ende nicht isoliert und somit wirksam ist, ist ein Kontakt der beidenElektroden auch bei zusammengezogener Schlinge verhindert. Die beiden Elektrodensind nämlich im übrigen auf ihrer gesamten Länge isoliert.Because in the preferred embodiment the noose wireOnly at the distal end is not isolated and therefore effective, is a contact between the twoElectrodes prevented even when the loop is pulled together. The two electrodesthat is to say they are insulated over their entire length.
Hierbei kann vorteilhaft sein, daß die Elektroden nur im Bereich dereinander zugewandten Hälften nicht mit der Isolierschicht versehen sind. Dadurchwird erreicht, daß eine unerwünschte Berührung selbst des distalen arbeitenden Endesder beiden Elektroden mit dem Endoskopschaft auch im zusammengezogenen Zustand vermiedenist.It can be advantageous that the electrodes are only in the area of thefacing halves are not provided with the insulating layer. Through thisit achieves undesirable contact even of the distal working endof the two electrodes with the endoscope shaft avoided even in the contracted stateis.
Hierzu ist noch zweckmäßig, daß die Schlinge in das Ende eines Schafteseinschiebbar ist. Dadurch können zangenartige Bewegungen der Schlinge erzeugt werden.Um die beiden Elektroden hierbei möglichst nahe aneinander zu bringen, kann nochvorgesehen sein, daß am Ende des Schaftes eine Innenhülse angeordnet ist.For this purpose, it is also useful that the loop is in the end of a shaftis retractable. This can generate pincer-like movements of the loop.In order to bring the two electrodes as close as possible to one another, it is still possiblebe provided that an inner sleeve is arranged at the end of the shaft.
Schließlich ist nach einem anderen Merkmal der Erfindung auth nochzweckmäßig, daß die beiden Elektroden in ihrem der Schlinge abgewandten proximalenBereich von einer Hülse ummantelt sind. Dadurch werden die beiden Elektroden indiesem Bereich zusammengehalten und können auch durch die Hülse gemeinsam betätigtwerden.Finally, according to another feature of the invention, auth is stillexpedient that the two electrodes in their proximal electrodes facing away from the loopArea are encased by a sleeve. This will put the two electrodes inthis area held together and can also be operated jointly by the sleevewill.
Weitere Vorteile und Einzelheiten der Erfindung ergeben sich aus dernun folgenden Beschreibung eines Ausführungsbeispiels unter Hinweis auf die Zeichnung.In dieser zeigen: Fig. 1 eine teilweise geschnittene Seitenansicht auf das distaleEnde des Erfindungsgegenstandes undFig. 2 das gleiche wie Fig.1, jedoch in der zusammengezogenen Lage.Further advantages and details of the invention emerge from thenow the following description of an embodiment with reference to the drawing.These show: FIG. 1 a partially sectioned side view of the distalEnd of the subject matter of the invention andFig. 2 is the same as Fig.1, but in the contracted position.
In Fig. 1 sieht man den Instrumentenschaft 6, wobei es sich auch umden Endoskopschaft handeln kann, andernfalls um eine Hülse, die in einem nicht weiterdargestellten Endoskop angeordnet ist. Derartige Endoskope mit ähnlichen Instrumentensind bereits bekannt und müssen daher nicht im einzelnen dargestellt werden.In Fig. 1 you can see the instrument shaft 6, which is alsothe endoscope shaft can act, otherwise a sleeve that does not continue in oneshown endoscope is arranged. Such endoscopes with similar instrumentsare already known and therefore do not have to be presented in detail.
In dem Schaft 6 sind zwei Elektroden 1 und 2 am distalen Ende schlingenförmigangeordnet und am distalen Ende mittels eines Isolierstückes 3 zusammengehalten,in dem die Elektroden 1 und 2 voneinander getrennt gehalten sind, so daß ein Kurzschlußnicht entstehen kann. Mittels der unterbrochenen Linien 9 und 10 ist die Lage derElektroden innerhalb des Isolierstückes 3 getrennt voneinander angegeben.In the shaft 6, two electrodes 1 and 2 are looped at the distal endarranged and held together at the distal end by means of an insulating piece 3,in which the electrodes 1 and 2 are kept separate from each other, so that a short circuitcannot arise. By means of the broken lines 9 and 10, the position of theElectrodes indicated separately from one another within the insulating piece 3.
Die Elektroden 1 und 2 sind nahezu über ihre gesamte Länge vollständigmit einer Isolierschicht versehen. Lediglich in der Nähe des Isolierstückes 3 istdie Isolierung an deneinander zugewandten Hälften der Elektroden1 und 2 im Bereich 4 und 5 nicht vorhanden. Wie man der Fig. 1 deutlich entnehmenkann, ist die Isolierung hier im Außenbereich 11 und 12 ebenfalls noch vorhanden,lediglich innen sind die Elektrodenhälften 4 und 5 blank, das heißt ohne die IsolierungNur dieser Bereich bildet daher die aktiven oder arbeitenden Elektroden.The electrodes 1 and 2 are almost complete over their entire lengthprovided with an insulating layer. Only in the vicinity of the insulating piece 3 isthe insulation on thefacing halves of the electrodes1 and 2 not available in areas 4 and 5. As can be clearly seen in FIG. 1the insulation is still present here in the outer area 11 and 12,the electrode halves 4 and 5 are bare only on the inside, that is to say without the insulationOnly this area therefore forms the active or working electrodes.
Die erwähnte Schlinge ist in Fig. 1 vollständig ausgefahren.The loop mentioned is fully extended in FIG.
Sie wird innerhalb des Schaftes 6 durch die Hülse 7 zusammengedrückt,und im proximalen Bereich sind die beiden Elektroden 1 und 2 von einer weiterenHülse 8 ummantelt, die einen sehr viel kleineren Durchmesser hat als der Schaft6 und die beiden Elektroden zusammenhält. Diese Hülse 8 kann auch zur Betätigung,das heißt zur Verschiebung der Elektroden in Richtung des Pfeiles 13 und in Gegenrichtungdienen.It is compressed within the shaft 6 by the sleeve 7,and in the proximal area the two electrodes 1 and 2 are from anotherSheathed sleeve 8, which has a much smaller diameter than the shaft6 and holds the two electrodes together. This sleeve 8 can also be used to operatethat is, to move the electrodes in the direction of arrow 13 and in the opposite directionto serve.
In Fig. 2 sind die Elektroden mittels der Hülse 8 in Richtung desPfeiles 13 in den Schaft oder die Hülse 6 hineingezogen, so daß hierdurch die beidendistalen aktiven Enden 4 und 5 der Elektroden 1 und 2 einander genähert worden sind.In Fig. 2, the electrodes are by means of the sleeve 8 in the direction ofArrow 13 drawn into the shaft or the sleeve 6, so that thereby the twodistal active ends 4 and 5 of electrodes 1 and 2 have been brought closer to each other.
Sie haben dadurch eine zangenförmige Bewegung ausgeführt unddazwischenvorhandenes Gewebe oder dgl. abgetrennt.You have performed a pincer-shaped movement andbetweenExisting tissue or the like. Separated.
Durch die Erfindung ist dabei die erwähnte Coagulations-Wirkung deraktiven Teile der Elektrode eingetreten.Through the invention, the aforementioned coagulation effect is theactive parts of the electrode occurred.
Die Erfindung ist nicht auf die dargestellte Ausführungsform beschränkt.Sie kann sowohl bei flexiblen Schlingen, z.B. für Gastroskope, Colonoskope als auchbei starren Schlingen, z.B. für Rektoskope oder Laryngoskope Anwendung finden.The invention is not limited to the embodiment shown.It can be used with flexible slings, e.g. for gastroscopes, colonoscopes as well asfor rigid slings, e.g. for rectoscopes or laryngoscopes.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19752514501DE2514501A1 (en) | 1975-04-03 | 1975-04-03 | Bipolar coagulation instrument for endoscopes - has two high frequency electrodes looped over central insulating piece |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19752514501DE2514501A1 (en) | 1975-04-03 | 1975-04-03 | Bipolar coagulation instrument for endoscopes - has two high frequency electrodes looped over central insulating piece |
| Publication Number | Publication Date |
|---|---|
| DE2514501A1true DE2514501A1 (en) | 1976-10-21 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19752514501PendingDE2514501A1 (en) | 1975-04-03 | 1975-04-03 | Bipolar coagulation instrument for endoscopes - has two high frequency electrodes looped over central insulating piece |
| Country | Link |
|---|---|
| DE (1) | DE2514501A1 (en) |
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