DE19650150C2 - Bipolare elektrochirurgische Schere und deren Herstellungsverfahren - Google Patents
Bipolare elektrochirurgische Schere und deren HerstellungsverfahrenInfo
- Publication number
- DE19650150C2 DE19650150C2 DE19650150A DE19650150A DE19650150C2 DE 19650150 C2 DE19650150 C2 DE 19650150C2 DE 19650150 A DE19650150 A DE 19650150A DE 19650150 A DE19650150 A DE 19650150A DE 19650150 C2 DE19650150 C2 DE 19650150C2
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- Prior art keywords
- cutting
- scissors
- conductive
- bipolar
- pole
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- 238000004519 manufacturing process Methods 0.000 title claims 2
- 239000004020 conductor Substances 0.000 claims description 8
- 239000000758 substrate Substances 0.000 claims 6
- 238000000034 method Methods 0.000 claims 5
- 238000010030 laminating Methods 0.000 claims 1
- 230000015271 coagulation Effects 0.000 description 9
- 238000005345 coagulation Methods 0.000 description 9
- 239000012777 electrically insulating material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000023555 blood coagulation Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000002357 laparoscopic surgery Methods 0.000 description 1
- 238000012830 laparoscopic surgical procedure Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002355 open surgical procedure Methods 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical 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
- A61B18/14—Probes or electrodes therefor
- A61B18/1442—Probes having pivoting end effectors, e.g. forceps
- A61B18/1445—Probes having pivoting end effectors, e.g. forceps at the distal end of a shaft, e.g. forceps or scissors at the end of a rigid rod
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical 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
- A61B18/1206—Generators therefor
- A61B2018/1246—Generators therefor characterised by the output polarity
- A61B2018/126—Generators therefor characterised by the output polarity bipolar
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical 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
- A61B18/14—Probes or electrodes therefor
- A61B2018/1405—Electrodes having a specific shape
- A61B2018/1412—Blade
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical 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
- A61B18/14—Probes or electrodes therefor
- A61B2018/1467—Probes or electrodes therefor using more than two electrodes on a single probe
Description
Diese Erfindung betrifft chirurgische Scheren, die für
bipolare Elektrochirurgie tauglich sind, und insbesondere
Scheren, bei denen zwei elektrische Pole so auf den
Außenoberflächen ihrer Scherenschneiden angeordnet sind,
daß eine bessere Gewebekoagulation erreicht wird.
Elektrochirurgische Werkzeuge wurden bislang als einpolig
oder bipolar gekennzeichnet. Einpolige Elektrochirurgie
bezieht sich auf eine Konfiguration, bei der eine separate
Rückelektrode mit dem Patienten verbunden ist, so daß sich
nur ein elektrischer Pol an dem elektrochirurgischen
Werkzeug befindet. Im Gegensatz dazu bezieht sich bipolare
Elektrochirurgie auf eine Konfiguration, bei der sich beide
elektrische Pole an dem chirurgischen Werkzeug befinden.
Einpolige wie bipolare elektrochirurgische Werkzeuge bieten
dem Chirurgen jeweils bestimmte Vor- und Nachteile.
Einer der Vorteile einpoliger elektrochirurgischer
Werkzeuge besteht darin, daß der Chirurg immer dann
elektrochirurgischen Strom einsetzen kann, wenn der
leitende Teil des Werkzeugs in elektrischem Kontakt mit dem
Patienten steht. Auf diese Weise kann eine Chirurg mit
einpoligen elektrochirurgischen Werkzeugen aus vielen
verschiedenen Winkeln operieren. Im Gegensatz dazu haben
bipolare Werkzeuge den Nachteil, daß der Chirurg das
Werkzeug sorgfältig positionieren muß, um sicherzustellen,
daß für die Anwendung von elektrochirurgischem Strom beide
elektrischen Pole mit dem Patienten in elektrischem Kontakt
stehen. Das kann den Bewegungsbereich und den Winkel, in
dem der Chirurg das bipolare Werkzeug einsetzen kann,
einschränken.
Chirurgische Schneiden oder Scheren wurden für den Gebrauch
mit elektrochirurgischer Energie konstruiert. Die
Kombination von Scheren mit der Elektrochirurgie erlaubt es
dem Chirurgen, Gewebe mechanisch zu durchschneiden, während
durch die Anwendung elektrochirurgischen Stroms die
Blutgerinnung am durchschnittenen Gewebe bewirkt wird. Wenn
das Gewebe von den Schneideoberflächen durchschnitten
worden ist, gleitet das zerschnittene Gewebe über die
Außenoberflächen der Schneideglieder, wo es koaguliert
wird. Gewebe kann auch koaguliert werden, während es von
der Schere erfaßt wird und bevor es mechanisch
durchschnitten wird. Als Außenoberflächen werden die Teile
jedes Schneideglieds bezeichnet, die exponiert sind, wenn
die Schneideglieder geschlossen sind. Die Außenoberflächen
liegen im allgemeinen den Schneideoberflächen jedes
Schneideglieds gegenüber.
Es gibt verschiedene Plazierungsmöglichkeiten für die
elektrochirurgischen Pole, die es dem elektrischen Strom
ermöglichen, durch das durchschnittene Gewebe zu fließen.
Zum Beispiel kann die Außenoberfläche eines der
Schneideglieder von einem ersten Pol erregt werden, während
die Außenoberfläche des anderen Schneideglieds von einem
zweiten Pol erregt wird. In dieser Konfiguration kann
elektrochirurgischer Strom von einer Außenoberfläche, durch
das durchschnittene Gewebe zur anderen Außenoberfläche
fließen.
In einem anderen Beispiel werden die Außenoberflächen von
einem ersten Pol erregt, während beide Schneideoberflächen
von einem zweiten Pol erregt werden. In dieser
Konfiguration kann elektrochirurgischer Strom von jeder
Schneideoberfläche durch das zerschnittene Gewebe zu einer
Außenoberfläche fließen. Man beachte, daß bei diesen beiden
Beispielen jede Außenoberfläche von nur einem elektrischen
Pol erregt wird.
Chirurgen möchten die Scheren oft dazu benutzen Blutungen
gerinnen zu lassen, ohne Gewebe zu durchschneiden. Es wäre
wünschenswert, diese Funktion mit geschlossenen oder
zusammengeklappten Schneidegliedern ausführen zu können und
ein Freiliegen der Schneidekanten zu vermeiden. Die
Verfügbarkeit des Koagulationsmerkmals an der Schere würde
ein separates Koagulationswerkzeug unnötig machen. Die
Benutzung eines separaten Koagulationswerkzeugs macht es
erforderlich, daß der Chirurg mitten in der Operation die
Werkzeuge wechseln muß. Das kann bei laparoskopischen
Operationen beschwerlich sein.
Es wäre wünschenswert, den Chirurgen zu ermöglichen, die
Außenoberflächen der Schere zur Gewebekoagulation zu
verwenden. Derzeit verfügbare Scheren haben den Nachteil,
daß die Außenoberflächen nicht so einfach für
Koagulationszwecke umfunktioniert werden können, da, wie
oben beschrieben, auf jeder Außenoberfläche nur ein
elektrischer Pol zum Gewebe hin exponiert ist. Um dem Strom
zu ermöglichen, durch das Gewebe zu fließen, muß der
Chirurg die Schere so umfunktionieren, daß beide
elektrischen Pole mit dem Gewebe in Kontakt stehen. Somit
müssen beide Außenoberflächen mit dem Gewebe in Kontakt
stehen, oder alternativ müssen eine Außenoberfläche und
eine Schneideoberfäche mit dem Gewebe Kontakt haben. Diese
Alternativen bieten nicht die Annehmlichkeit, einfach nur
eine Außenoberfläche mit dem blutenden Gewebe in Kontakt zu
bringen.
Das US-Patent 5 324 289 beschreibt eine bipolare
chirurgische Schere. Ein Schneideglied trägt einen ersten
elektrischen Pol und ein zweites Schneideglied trägt einen
zweiten elektrischen Pol. Wenigstens eine Schneide
oberfläche und -kante des Instruments besteht aus
elektrisch isolierendem Material. Das verhindert, daß die
Schneiden einen elektrischen Kurzschluß erzeugen, wenn die
beiden Schneideglieder miteinander in Kontakt kommen. Diese
Ausführung hat den Nachteil, daß auf jeder Außenoberfläche
nur jeweils ein elektrischer Pol exponiert ist. Somit
müssen zur Anwendung elektrochirurgischen Stroms beide
Schneideglieder mit dem Gewebe des Patienten in Kontakt
stehen.
Das US-Patent 5 352 222 beschreibt eine verbesserte
bipolare chirurgische Schere. Die Schneideoberflächen und -
-kanten bestehen aus Metall, damit wird die Scherfähigkeit
des Werkzeugs verbessert. Die Schneideoberflächen und
kanten haben eine elektrische Isolierschicht, die sie von
den Elektroden trennt. Auch diese Ausführung weist auf
jeder Außenoberfläche nur einen elektrischen Pol auf. Wie
auch bei der vorherigen Ausführung, müssen zur Anwendung
elektrochirurgischen Stroms beide Schneideglieder mit dem
Patientengewebe in Kontakt stehen.
Eine Aufgabe der vorliegenden Erfindung besteht somit darin,
eine bipolare elektrochirurgische Schere bereitzustellen, die
gegenüber bekannten bipolaren chirurgischen Scheren eine
verbesserte Koagulationsfähigkeit aufweist. Insbesondere soll
die Schere auch in geschlossenem oder zusammengeklapptem
Zustand für die Gewebekoagulation eingesetzt werden können.
Es wird eine bipolare elektrochirurgische Schere
beschrieben, die die Koagulationsfähigkeit elektrochirurgi
scher Scheren verbessert. Insbesondere werden Chirurgen
feststellen, daß die hier beschriebene bipolare Schere
einfacher für Koagulationszwecke umfunktioniert werden
kann, während die Schere geschlossen oder zusammengeklappt
ist. Die neue Anordnung der elektrischen Pole auf jedem
Schneideglied der Schere wird es möglich machen, das
Werkzeug in vielen verschiedenen Winkeln zu halten und
immer noch den elektrischen Kontakt mit beiden Polen zu
gewährleisten.
Es gibt verschiedene Ausführungsformen der verbesserten
bipolaren Schere. Jede Ausführungsform kann bei einer für
offene chirurgische Verfahren konstruierten Schere oder für
laparoskopische chirurgische Verfahren konstruierten Schere
angewendet werden. Bei einer laparoskopischen Schere werden
die Schneideglieder am distalen Ende einer verlängerten
Halterung befestigt.
In einer Ausführungsform kann jedes Schneideglied so
geformt sein, daß sich das leitende Material das die
Schneideoberfläche bildet, auch durch den Körper des
Schneideglieds erstreckt, und auf seiner jeweiligen
Außenoberfläche exponiert ist. Damit wird ein erster
elektrischen Pol auf der Schneideoberfläche wie auch auf
der Außenoberfläche des Schneideglieds exponiert. Ein
zweiter elektrischer Pol wird ebenso auf der
Außenoberfläche des Schneideglieds exponiert. Das kann
dadurch erreicht werden, daß ein oder mehrere leitende
Streifen in der Nähe des ersten elektrischen Pols auf der
Außenoberfläche eingebettet oder angebracht wird bzw.
werden. Der erste und zweite elektrische Pol müssen
elektrisch gegeneinander isoliert sein, um einen Kurzschluß
zu verhindern. Diese Anordnung ermöglicht es dem Chirurgen,
Gewebe unter Verwendung der Außenoberfläche jedes
Schneideglieds zu koagulieren. Der elektrochirurgische
Strom fließt vom ersten elektrische Pol durch das Gewebe
des Patienten und dann zum zweiten elektrischen Pol.
Bei einer alternative Ausführungsform werden die leitenden
Bereiche auf den Außenoberflächen dadurch gebildet, daß die
Scherenschneideglieder mit leitendem Material beschichtet
oder laminiert werden. Die Schneideglieder bestehen
vorzugsweise aus elektrisch isolierendem Material, so daß
die leitenden Bereiche gegeneinander isoliert sind. Eine
weitere Alternative der Laminierung mit leitendem Material
besteht darin, das Material einzulegen oder mit Dampf
abzuscheiden.
Fig. 1 ist eine Seitenansicht einer Ausführungsform einer
bipolaren elektrochirurgischen Schere.
Fig. 2 ist ein Schema einer Vorderansicht einer ersten
Ausführungsform einer bipolaren elektrochirurgischen
Schere.
Fig. 3 ist ein Schema einer Vorderansicht einer zweiten
Ausführungsform einer bipolaren elektrochirurgischen
Schere.
Fig. 4 ist ein Schema einer Vorderansicht einer dritten
Ausführungsform einer bipolaren elektrochirurgischen
Schere.
Fig. 5 ist eine Seitenansicht einer laparoskopischen
Ausführungsform einer bipolaren elektrochirurgischen
Schere.
Eine bipolare Schere 10 hat, wie in Fig. 1 gezeigt wird,
erste und zweite Schneideglieder 11 und 12. Die
Schneideglieder 11 und 12 sind durch ein Zapfengelenk 13
miteinander verbunden, um eine scherenartige Bewegung der
Schneideglieder 11 und 12 zu ermöglichen. Jedes Schneide
glied 11 und 12 hat ein distales Ende 14 und eine
Schneideoberfläche 15, die sich zwischen dem Zapfengelenk
13 und dem distalen Ende 14 befindet. Die distalen Enden 14
der Schneideglieder 11 und 12 sind für den Kontakt mit dem
Gewebe bestimmt. Jede Schneideoberfläche 15 ist auf einer
Seite durch eine Schneidekante 16 begrenzt.
Jedes Schneideglied 11 und 12 hat auch eine Außenoberfläche
17. Die Außenoberflächen 17 sind die Bereiche der
Schneideglieder 11 und 12, die exponiert sind, wenn sich
die Schneideglieder 11 und 12 in geschlossener oder
zusammengeführter Position befinden. Die Außenoberflächen
17 liegen im allgemeinen den Schneideoberflächen 15 auf
jedem Schneideglied 11 und 12 gegenüber.
In einer Ausführungsform ist die Schere 10 für die
laparoskopische Chirurgie konstruiert. Ein erstes und
zweites Schneideglied 11 und 12 sind, wie in Fig. 5 gezeigt
wird, am distalen Ende einer länglichen Struktur 18
angebracht. Die längliche Struktur 18 ist so konstruiert,
daß sie in eine Kanüle paßt und das erste und zweite
Schneideglied 11 und 12 zum Operationssitus des Patienten
hin verlängert.
An der Schere 10 sind elektrische Anschlüsse 19 zur
Aufnahme von zwei Polen 20 und 21 bipolarer
elektrochirurgischer Energie befestigt. Die elektro
chirurgische Energie ist elektrische Hochfrequenzenergie,
und somit werden die beiden Pole 20 und 21 entsprechend mit
erster Pol 20 und zweiter Pol 21 bezeichnet. Die
elektrischen Anschlüsse 19 erhalten die beiden Pole 20 und
21 von einem electrochirurgischen Generator. Die beiden
Pole 20 und 21 werden dann zu verschiedenen Bereichen der
chirurgischen Schere 10 geleitet. Durch die Anordnung der
verschiedenen leitenden Bereiche 22 ist die bipolaren
Schere 10 für den Chirurgen nützlicher als frühere
Konstruktionen. Insbesondere sind die leitenden Bereiche 22
so auf den Schneideglieder 11 und 12 angeordnet, daß beide
Pole 20 und 21 auf jedem Schneideglied 11 und 12 zum Gewebe
hin exponiert sind, auch wenn die Schere geschlossen ist.
In einer Ausführungsform sind, wie in Fig. 2 gezeigt ist,
beide Schneideoberflächen 15 leitend. Die beiden Schneide
oberflächen 15 berühren sich während des Gebrauchs, und
daher sind beide Schneideoberflächen 15 elektrisch mit dem
gleichen Pol 20 verbunden, um einen elektrischen Kurzschluß
zu vermeiden. In dieser Ausführungsform muß das
Zapfengelenk 13 nicht elektrisch isoliert sein.
Jede Außenoberfläche 17 hat mindestens zwei elektrisch
leitende Bereiche 22, die gegeneinander isoliert sind.
Jeder Pol 20 und 21 ist mit wenigstens einem leitenden
Bereich 22 auf jeder Außenoberfläche 17 elektrisch
verbunden. Diese Anordnung bewirkt, daß beide elektrischen
Pole 20 und 21 auf jeder Außenoberfläche 17 der Schere 10
exponiert sind. Wenn der Chirurg eine der Außenoberflächen
zum Gewebe führt, kann elektrischer Strom zwischen den
leitenden Bereichen 17 auf dieser Außenoberfläche 17 durch
das Gewebe fließen.
In einer anderen Ausführungsform gibt es, wie in Fig. 2
gezeigt ist, auf jeder Außenoberfläche 17 drei leitende
Bereiche 22. Einer der leitenden Bereiche 22 auf jeder
Außenoberfläche 17 erstreckt sich durch den Körper seines
entsprechenden Schneideglieds 11 und 13 und bildet einen
leitenden Bereich 22 auf seiner entsprechenden Schneide
oberfläche 15. Somit wird, wenn der erste Pol 20 mit der
Schneideoberfläche 15 verbunden ist, dieser auch mit einem
der leitenden Bereiche 22 auf der Außenoberfläche 17
verbunden. Die anderen beiden leitenden Bereiche 22 auf
jeder Außenoberfläche 17 sind elektrisch mit dem zweiten
Pol 21 verbunden.
In der in Fig. 2 gezeigten Ausführungsform sind bestimmte
leitende Bereiche, die in Fig. 2 mit 24 bezeichnet werden,
auf jedem Schneideglied 11 und 12 in die Außenoberflächen
17 eingelegt. Eine Isolierschicht 23 trennt die leitenden
Bereiche 22 voneinander. Die leitenden Bereiche 24 sind
elektrisch mit dem Pol 21 verbunden. Andere leitende
Bereiche, die in Fig. 2 mit 25 bezeichnet sind, erstrecken
sich durch die Schneideglieder 11 und 12. Die leitenden
Bereiche 25 sind elektrisch verbunden, um den Pol 20 auf
beiden Schneideoberflächen 15 und auf den Außenoberflächen
17 zu exponieren.
Bei der in Fig. 3 gezeigte Ausführungsform sind die
leitenden Bereiche 22 auf die Außenoberflächen 17 und die
Schneideoberflächen 15 laminiert. In einer alternativen,
ebenfalls in Fig. 3 dargestellten Ausführungsform, wurden
die leitenden Bereiche auf den Außenoberflächen 17 und den
Schneideoberflächen 15 durch Dampf- oder Ionenabscheidung
erzeugt. In noch einer weiteren alternativen Ausführungs
form, die in Fig. 3 gezeigt ist, können die leitenden
Bereiche 22 in die Schneideglieder 11 und 12 eingelegt
werden. Die Schneideglieder 11 und 12 in Fig. 2 bestehen
aus elektrisch isolierendem Material.
Es versteht sich von selbst, daß die oben beschriebenen
Anordnungen nur die Anwendung der Grundsätze der
vorliegenden Erfindung veranschaulichen sollen. Zahlreiche
Modifikationen und alternative Anordnungen können von den
Fachleuten erdacht werden, ohne daß sie vom Geist und
Umfang der vorliegenden Erfindung abzuweichen. Die
beigefügten Ansprüche sind dazu bestimmt, solche
Modifikationen und Anordnungen mit abzudecken.
Claims (14)
1. Bipolare elektrochirurgische Schere, die enthält:
erste und zweite Schneideglieder (11 und 12), wobei jedes Schneideglied ein distales Ende (14) zur Behandlung von Gewebe aufweist;
ein Zapfengelenk (13), das das erste und zweite Schneideglied (11 und 12) verbindet;
eine Schneideoberfläche (15) auf jedem Schneideglied, die entlang des Schneideglieds zwischen dem Zapfengelenk (13) und dem entsprechenden distalen Ende angeordnet ist;
elektrische Anschlüsse (19) auf der Schere zur Aufnahme von zwei Polen (20 und 21) bipolarer elektro chirurgischer Energie, und
eine Außenoberfläche auf jeder der ersten und zweiten Schneideglieder (11 und 12), wobei jede Außenoberfläche seinen jeweiligen Schneideoberflächen (15) gegenüberliegt und jede Außenoberfläche mindestens zwei exponierte elektrisch leitende Bereiche (22) aufweist, die voneinander isoliert sind, wobei jeder Pol mit mindestens einem leitenden Bereich auf jeder Außenoberfläche verbunden ist.
erste und zweite Schneideglieder (11 und 12), wobei jedes Schneideglied ein distales Ende (14) zur Behandlung von Gewebe aufweist;
ein Zapfengelenk (13), das das erste und zweite Schneideglied (11 und 12) verbindet;
eine Schneideoberfläche (15) auf jedem Schneideglied, die entlang des Schneideglieds zwischen dem Zapfengelenk (13) und dem entsprechenden distalen Ende angeordnet ist;
elektrische Anschlüsse (19) auf der Schere zur Aufnahme von zwei Polen (20 und 21) bipolarer elektro chirurgischer Energie, und
eine Außenoberfläche auf jeder der ersten und zweiten Schneideglieder (11 und 12), wobei jede Außenoberfläche seinen jeweiligen Schneideoberflächen (15) gegenüberliegt und jede Außenoberfläche mindestens zwei exponierte elektrisch leitende Bereiche (22) aufweist, die voneinander isoliert sind, wobei jeder Pol mit mindestens einem leitenden Bereich auf jeder Außenoberfläche verbunden ist.
2. Bipolare Schere (10) nach Anspruch 1, bei der die
Schneideoberflächen (15) elektrisch leitend und elektrisch
mit dem gleichen Pol verbunden sind, so daß zwischen den
Schneidegliedern (15) im wesentlichen kein elektrisches
Potential herrscht.
3. Bipolare Schere (10) nach Anspruch 1, bei der es drei
leitende Bereiche (22) auf jeder Außenoberfläche gibt.
4. Bipolare Schere (10) nach Anspruch 3, bei der einer
der leitenden Bereiche (22) auf jeder Außenoberfläche
elektrisch mit dem gleichen Pol wie die Schneideoberflächen
(15) verbunden ist.
5. Bipolare Schere (10) nach Anspruch 1, bei der sich
einer der leitenden Bereiche (22) auf jeder Außenoberfläche
durch sein entsprechendes Schneideglied hindurch erstreckt
und auch die Schneideoberfläche (15) bildet.
6. Bipolare Schere (10) nach Anspruch 1, bei der die
leitenden Bereiche (22) ein laminiertes elektrisch
leitendes Material auf einem isolierendem Substrat
enthalten.
7. Bipolare Schere (10) nach Anspruch 1, bei der die
leitenden Bereiche (22) eingelegtes elektrisch leitendes
Material auf einem isolierendem Substrat enthalten.
8. Bipolare Schere (10) nach Anspruch 1, bei der die
leitenden Bereiche (22) eine elektrisch leitende Ablagerung
auf einem isolierendem Substrat enthalten.
9. Bipolare Schere (10) nach Anspruch 1, bei der die
Schneideglieder mit einem länglichen Schaft zum
Durchschieben durch eine Kanüle verbunden sind.
10. Verfahren zur Herstellung einer bipolaren Schere (10),
die zwei Schneideglieder aufweist, wobei jedes Schneide
glied eine Schneideoberfläche (15) und eine Außenoberfläche
hat, die auf der gegenüberliegenden Seite
davon liegt, und jede Außenoberfläche mindestens erste und
zweite elektrisch leitende Bereiche (22) aufweist, die
elektrisch voneinander isoliert sind, wobei das Verfahren
folgende Schritte aufweist:
Verbinden jeder Schneideoberfläche (15) mit einem ersten elektrischen Pol;
Verbinden des ersten leitenden Bereichs auf jeder Außenoberfläche mit dem ersten elektrischen Pol, und
Verbinden des zweiten leitenden Bereichs auf jeder Außenoberfläche mit einem zweiten elektrischen Pol.
Verbinden jeder Schneideoberfläche (15) mit einem ersten elektrischen Pol;
Verbinden des ersten leitenden Bereichs auf jeder Außenoberfläche mit dem ersten elektrischen Pol, und
Verbinden des zweiten leitenden Bereichs auf jeder Außenoberfläche mit einem zweiten elektrischen Pol.
11. Verfahren nach Anspruch 10, das weiterhin einen
Schritt zur Bildung der leitenden Bereiche (22) durch
laminiertes elektrisch leitendes Material auf einem
isolierendem Substrat enthält.
12. Verfahren nach Anspruch 10, das weiterhin einen
Schritt zur Bildung der leitenden Bereiche (22) durch das
Einlegen elektrisch leitenden Materials in ein isolierendem
Substrat enthält.
13. Verfahren nach Anspruch 10, das weiterhin einen
Schritt zur Bildung der leitenden Bereiche (22) durch
Auftragen elektrisch leitenden Materials auf ein
isolierendes Substrat enthält.
14. Verfahren nach Anspruch 10, das weiterhin den Schritt
enthält, die Schneideglieder auf einem leitenden Zapfen
gelenkig zueinander zu verbinden.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US08/566,560 US5658281A (en) | 1995-12-04 | 1995-12-04 | Bipolar electrosurgical scissors and method of manufacture |
Publications (2)
Publication Number | Publication Date |
---|---|
DE19650150A1 DE19650150A1 (de) | 1997-06-05 |
DE19650150C2 true DE19650150C2 (de) | 2000-01-20 |
Family
ID=24263406
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19650150A Expired - Fee Related DE19650150C2 (de) | 1995-12-04 | 1996-12-03 | Bipolare elektrochirurgische Schere und deren Herstellungsverfahren |
Country Status (4)
Country | Link |
---|---|
US (1) | US5658281A (de) |
JP (1) | JPH09173347A (de) |
CA (1) | CA2191823C (de) |
DE (1) | DE19650150C2 (de) |
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- 1996-12-03 DE DE19650150A patent/DE19650150C2/de not_active Expired - Fee Related
- 1996-12-04 JP JP8324318A patent/JPH09173347A/ja active Pending
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Also Published As
Publication number | Publication date |
---|---|
CA2191823A1 (en) | 1997-06-05 |
US5658281A (en) | 1997-08-19 |
CA2191823C (en) | 1999-05-04 |
DE19650150A1 (de) | 1997-06-05 |
JPH09173347A (ja) | 1997-07-08 |
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