DE3917328C2 - - Google Patents

Info

Publication number
DE3917328C2
DE3917328C2 DE3917328A DE3917328A DE3917328C2 DE 3917328 C2 DE3917328 C2 DE 3917328C2 DE 3917328 A DE3917328 A DE 3917328A DE 3917328 A DE3917328 A DE 3917328A DE 3917328 C2 DE3917328 C2 DE 3917328C2
Authority
DE
Germany
Prior art keywords
jaw
outer shaft
instrument
jaw part
halves
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 - Lifetime
Application number
DE3917328A
Other languages
English (en)
Other versions
DE3917328A1 (de
Inventor
Andreas 6200 Wiesbaden De Melzer
Markus 5253 Lindlar De Naruhn
Karl Dr. 6204 Taunusstein De Kipfmueller
Hans-Dieter Prof. Dr. 5206 Neukirch-Saalscheid De Reidenbach
Gerd Prof. Dr. 6501 Nieder-Olm De Buess
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.)
Richard Wolf GmbH
Original Assignee
Richard Wolf GmbH
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 Richard Wolf GmbH filed Critical Richard Wolf GmbH
Priority to DE3917328A priority Critical patent/DE3917328A1/de
Priority to EP90105285A priority patent/EP0400288B1/de
Priority to US07/511,476 priority patent/US4985030A/en
Publication of DE3917328A1 publication Critical patent/DE3917328A1/de
Application granted granted Critical
Publication of DE3917328C2 publication Critical patent/DE3917328C2/de
Granted legal-status Critical Current

Links

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
    • A61B18/1442Probes having pivoting end effectors, e.g. forceps
    • 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
    • A61B18/1402Probes for open surgery
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34Trocars; Puncturing needles
    • A61B17/3417Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
    • A61B17/3421Cannulas
    • A61B2017/3445Cannulas used as instrument channel for multiple instruments
    • 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
    • A61B18/1442Probes having pivoting end effectors, e.g. forceps
    • A61B2018/145Probes having pivoting end effectors, e.g. forceps wherein the effectors remain parallel during closing and opening
    • 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
    • A61M3/00Medical syringes, e.g. enemata; Irrigators
    • A61M3/02Enemata; Irrigators
    • A61M3/0279Cannula; Nozzles; Tips; their connection means

Description

Die Erfindung geht aus von einem bipolaren Koagulationsinstrument mit einem Außenschaft, welcher an seinem distalen Ende mit einer Faßzange aus einem feststehenden ersten Maulteil und einem demgegenüber bewegbaren zweiten Maulteil versehen ist, wobei die beiden Maulteile gegeneinander isoliert sind und jeweils im Abstand zueinander angeordnete Maulteilhälften aufweisen.
Aus der EP 02 10 125 B1 ist ein bipolares Koagulationsinstrument bekannt, welches an dem distalen Ende eines Führungsrohres mit einer Faßzange versehen ist, die mittels eines Scherengriffes im proximalen Endbereich des Führungsrohres betätigbar ist. Die Faßzange besteht aus einem festen und einem diesem gegenüberliegenden beweglichen Zangenschenkel, die beide durch jeweils eine Öffnung (Ausnehmung) in zwei im Abstand zueinander angeordnete Teilschenkel gegliedert sind. Dem festen Zangenschenkel ist ein Schneidmesser zugeordnet, das durch einen weiteren Griff im proximalen Endbereich des Führungsrohres betätigbar ist. Die Betätigung des beweglichen Zangenschenkels und des Schneidmessers erfolgt durch in dem Führungsrohr geführte Schub- und Zugstangen, die mit den Griffen verbunden sind.
Dieses bekannte Koagulationsinstrumente kann durch einen Instrumentenkanal eines Mediastinoskopes zum Koagulieren von Blutgefäßen und Lymphabflußbahnen hindurchgeführt und nach dem Koagulieren das zwischen den beiden Koagulationsstellen befindliche Gewebematerial durchtrennt werden. Da die Schneideinrichtung jedoch dem Maulteil zugeordnet ist, können Gewebeschnitte vor dem distalen Maulteilende nicht durchgeführt werden, ohne das Koagulationsinstrument gegen eine separate Schneidzange auszuutauschen, was für den Arzt eine erhebliche Belastung bedeutet und für den Patienten zu Beschwerden führt.
Die Aufgabe der Erfindung besteht darin, ein Koagulationsinstrument vorzuschlagen, das seinerseits zum Hindurchführen von Instrumenten, beispielsweise einer Schneidzange, geeignet ist.
Diese Aufgabe ist erfindungsgemäß durch die Merkmale des Anspruches 1 gelöst.
Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen angegeben.
Durch diese Lösung ist ein Auswechseln des Koagulationsinstrumentes gegen ein Schneidinstrument nicht mehr erforderlich, da abgeschnittene Gewebeteile durch das Koagulationsinstrument hindurchgezogen werden können. Dies bedeutet für den Arzt eine erhebliche Arbeitsentlastung und für den Patienten eine Vermeidung oder erhebliche Verminderung von Beschwerden während des Eingriffs.
Um beim Koagulieren ein Anhaften von Gewebeteilen an den Maulteilen des Koagulationsinstrumentes zu vermeiden, ist wenigstens eines der Maulteile mit Ausnehmungen an den Mauteilhälften versehen, die zwecks Zuführung von Spülflüssigkeit mit einem distal offenen Ende eines Spülkanals an dem Außenschaft verbunden sind.
Die Erfindung ist nachstehend anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert. Es zeigt
Fig. 1 die Seitenansicht eines Mediastinoskopes,
Fig. 2 einen Achsschnitt eines bipolaren Koagula­ tionsinstrumentes für das Durchführen durch einen Instrumentenkanal des Mediastinoskopes,
Fig. 3 eine distale Stirnansicht des Instrumentes nach Fig. 2,
Fig. 4 eine Aufsicht auf das distale Ende des Instru­ mentes nach Fig. 2,
Fig. 5 eine durch den Kanal des Koagulationsinstru­ mentes hindurchführbare Schneidzange.
Das bipolare Koagulationsinstrument nach den Fig. 2 bis 4 dient vor allem zur Durchführung durch einen In­ strumentenkanal eines Mediastinoskopes 2 nach Fig. 1, durch dessen Schaft ein Lichtleiterbündel und eine Optik verläuft. Das durch den Instrumentenkanal des Mediastinoskopes 2 hindurchzuführende bipolare Koa­ gulationsinstrument nach Fig. 2 und 3 besteht aus einem isolierten Außenschaft 5, auf dessen distales Ende eine Manschette 6 mit einem aus zwei im Abstand zueinander ange­ ordnete Hälften eines Maulteiles 7a, 7b aufgeschoben und lösbar befestigt ist. Die Befestigung erfolgt z. B. da­ durch, daß die Manschette 6 an ihrem proximalen Ende mit achsparallelen Einschnitten 8 versehen ist, durch die federvorgespannten Zungen 9 gebildet werden, die mit einem Wulst an ihren inneren Enden in eine Ringnut 10 des Außen­ schaftes eingreifen. Die beiden Hälften 7a, 7b des einen Maulteiles sind mit Ausnehmungen 11 versehen, die über einen Anschluß 12 und einen Kanal 13 Spülflüssigkeit mittels einer Saug- und Spülpumpe zugeführt wird. In dem mit Griffringen 14 versehenen Außenschaft 5 ist ein Innen­ schaft 15 durch einen Griffring 14a begrenzt axial ver­ schiebbar. Dieser gegen den Außenschaft 5 isolierte In­ nenschaft 15 weist am distalen Ende ebenfalls ein abge­ schrägtes, aus zwei im Abstand zueinander angeordnete Hälften gebildetes Maulteil 16a, 16b auf, das parallel zum Maulteil 17 angeordnet ist und ebenfalls Ausnehmungen 11 zum Zuführen einer Flüssigkeit aufweisen.
Der Anschluß der beiden Schäfte 5 und 15 bzw. der Koa­ gulationsmaulteile 7, 16, an eine HF-Stromquelle erfolgt in bekannter Weise dadurch, daß der Außenschaft 5 mit dem Kontakt 17 und der Innenschaft 15 über eine Kontaktkugel 18 oder dergleichen mit dem Kontakt 19 einer Steckverbin­ dung in Verbindung steht.
Wesentlich ist weiter, daß der Innenschaft 15 einen seine gesamte Länge, durchlaufenden Instrumentenkanal 20 auf­ weist, durch den eine an sich bekannte Schneidzange nach Fig. 5 und den Raum zwischen den beiden jeweils im Abstand zueinander angeordneten Maulteilhälften 7a, 7b, 16a, 16b hindurchführbar ist.
Mit dem bipolaren Koagulationsinstrument wird z. B. in Verbindung mit einem Mediastinoskop folgendermaßen gear­ beitet. Zum Freipräparieren der Speiseröhre von umgeben­ dem Gewebe wird zunächst auf der linken Halsseite ein Einschnitt vorgenommen und durch diesen hindurch die Speiseröhre chirurgisch durchtrennt. Ebenfalls erfolgt nach Öffnen des Bauchraumes eine Durchtrennung der Speise­ röhre im Bereich des Mageneingangs. Anschließend wird durch die Speiseröhre von unten her eine Sonde hindurchgeführt, die mit dem oberen Ende das umgeschlagene Ende der Speise­ röhre verbunden wird und auf die Sonde ein Zug ausgeübt. Dabei erfolgt das Freipräparieren der Speiseröhre durch die durch den Instrumentenkanal 20 hindurchgeführte Schneid­ zange nach Fig. 5.
Vorhandene Blutgefäße oder Lymphabflußbahnen werden zwischen den beiden sich jeweils gegenüberliegenden Hälften 7a, 7b, 16a, 16b der beiden Maulteile 7 und 16 festgelegt und durch HF-Stromzufuhr koaguliert, und im Anschluß daran das zwischen den beiden Maulteilhälften jeden Maulteiles 7 und 16 liegenden Teil des Gefäßes mittels der Schneid­ zange durchtrennt. Es ist damit möglich, das Koagulations­ instrument nach Fig. 2 bis 4 und die Schneidzange nach Fig. 5 gemeinsam unter visueller Kontrolle durch das Mediastinoskop zu verwenden, ohne daß ein Austausch von Instrumententeilen zu erfolgen braucht. Es ist auch möglich, die Schneidzange längsverschiebbar im Instru­ mentenkanal des Koagulationsinstrumentes feszulegen, so daß diese eine Funktionseinheit bilden. Das Absaugen von etwaigen Flüssigkeiten in der Körperhöhle kann über den Saug- und Spülkanal im Mediastinoskop erfolgen.

Claims (4)

1. Bipolares Koagulationsinstrument mit einem Außenschaft, welcher an seinem distalen Ende mit einer Faßzange aus einem feststehenden ersten Maulteil (7) versehen ist, wobei die beiden Maulteile gegeneinander isoliert sind und jeweils im Abstand zueinander angeordnete Maulteilhälften aufweisen, dadurch gekennzeichnet, daß die Maulteile (7 bzw. 16) zur Längsachse des Instrumentes abgewinkelt ausgeführt sind und das Maulteil (16) an einem in dem Außenschaft (5) geführten rohrförmigen Innenschaft (15) befestigt ist, der einen Kanal (20) aufweist, der mit dem durch den jeweiligen Abstand der Maulteilhälften (7a, 7b bzw. 16a, 16b) zwischen den Maulteilhälften (7a, 7b und 16a, 16b) hindurch beispielsweise eine Schneidzange hindurchführbar ist.
2. Instrument nach Anspruch 1, dadurch gekennzeichnet, daß mindestens eines der beiden Maulteile (7 oder 16) mit Ausnehmungen (11) in den Maulteilhälften (7, 7b bzw. 16, 16b) versehen ist, die mit einem distal offenen Ende eines Spülkanals (12) an dem Außenschaft (5) verbunden sind.
3. Instrument nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das erste Maulteil (7) mittels einer Manschette (6) auf das distale Ende des Außenschaftes (5) aufschiebbar und lösbar festlegbar ist.
4. Instrument nach Anspruch 3, dadurch gekennzeichnet, daß die Manschette (6) an ihrem proximalen Ende mit durch Längsschlitze (8) gebildeten Zungen (9) versehen ist, deren Enden, mit einem inneren Ringwulst versehen, in eine komplementäre Ringnut (10) des Außenschaftes (5) lösbar eingreifen.
DE3917328A 1989-05-27 1989-05-27 Bipolares koagulationsinstrument Granted DE3917328A1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE3917328A DE3917328A1 (de) 1989-05-27 1989-05-27 Bipolares koagulationsinstrument
EP90105285A EP0400288B1 (de) 1989-05-27 1990-03-21 Bipolares Koagulationsinstrument
US07/511,476 US4985030A (en) 1989-05-27 1990-04-18 Bipolar coagulation instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3917328A DE3917328A1 (de) 1989-05-27 1989-05-27 Bipolares koagulationsinstrument

Publications (2)

Publication Number Publication Date
DE3917328A1 DE3917328A1 (de) 1990-11-29
DE3917328C2 true DE3917328C2 (de) 1991-03-28

Family

ID=6381538

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3917328A Granted DE3917328A1 (de) 1989-05-27 1989-05-27 Bipolares koagulationsinstrument

Country Status (3)

Country Link
US (1) US4985030A (de)
EP (1) EP0400288B1 (de)
DE (1) DE3917328A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
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DE19915061A1 (de) * 1999-04-01 2000-10-26 Erbe Elektromedizin Chirurgisches Instrument
DE19915062C1 (de) * 1999-04-01 2001-02-08 Erbe Elektromedizin Chirurgisches Instrument
DE10031773A1 (de) * 2000-05-04 2001-11-15 Erbe Elektromedizin Chirurgisches Instrument,insbesondere Pinzette oder Zange

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DE19915062C1 (de) * 1999-04-01 2001-02-08 Erbe Elektromedizin Chirurgisches Instrument
DE10031773A1 (de) * 2000-05-04 2001-11-15 Erbe Elektromedizin Chirurgisches Instrument,insbesondere Pinzette oder Zange
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DE3917328A1 (de) 1990-11-29
US4985030A (en) 1991-01-15
EP0400288B1 (de) 1995-10-25
EP0400288A2 (de) 1990-12-05
EP0400288A3 (de) 1991-07-10

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