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DE19846703A1 - Endosurgical tool, e.g. scissors or pliers, for high-frequency use, e.g. electrocoagulation; has electrically-conducting actuating rods enclosed by insulating body near handles and insulating drive part opening axially into them - Google Patents

Endosurgical tool, e.g. scissors or pliers, for high-frequency use, e.g. electrocoagulation; has electrically-conducting actuating rods enclosed by insulating body near handles and insulating drive part opening axially into them

Info

Publication number
DE19846703A1
DE19846703A1 DE1998146703 DE19846703A DE19846703A1 DE 19846703 A1 DE19846703 A1 DE 19846703A1 DE 1998146703 DE1998146703 DE 1998146703 DE 19846703 A DE19846703 A DE 19846703A DE 19846703 A1 DE19846703 A1 DE 19846703A1
Authority
DE
Germany
Prior art keywords
tubular shaft
handle
frequency use
insulation
actuating rod
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.)
Withdrawn
Application number
DE1998146703
Other languages
German (de)
Inventor
Martin Storz
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 DE1998146703 priority Critical patent/DE19846703A1/en
Publication of DE19846703A1 publication Critical patent/DE19846703A1/en
Withdrawn legal-status Critical Current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
    • 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
    • A61B2018/00053Mechanical features of the instrument of device
    • A61B2018/00059Material properties
    • A61B2018/00071Electrical conductivity
    • A61B2018/00083Electrical conductivity low, i.e. electrically insulating

Landscapes

  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Otolaryngology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Plasma & Fusion (AREA)
  • Physics & Mathematics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)

Abstract

The tool has an electrically conducting actuating rod (1) enclosed by an insulating body (2) near the handles and an electrically insulating drive part (3) opening axially into them which is axially firmly attached to the actuating rod with stops on both sides and engages in the movable grip lever (4) off-axis so that the actuating rod can be moved axially by the grip lever.

Description

Chirurgische Hochfrequenzinstrumente werden sowohl in der offe­ nen, als auch minimalinvasiven Chirurgie zum Koagulieren von Gefäßen, als Scheren und Zangen eingesetzt.High frequency surgical instruments are used both in the open NEN, as well as minimally invasive surgery for coagulating Vessels used as scissors and tongs.

Die bekannten Konstruktionen verfügen griffseitig über einen Stromanschluß, über welchen die Elektrizität durch den Instrumentenschaft zum Arbeitsteil geführt wird. Über den Betätigungshebel des Handgriffs wird das distal angeordnete Arbeitsteil betätigt.The known constructions have a handle Power connection through which the electricity through the Instrument shaft is led to the working part. On the Operating lever of the handle is the distal one Working part actuated.

Durch das Einleiten von Elektrizität stehen in der Regel alle metal­ lenen Bauteile des Instruments unter Strom, sodaß zum Schutze des Patienten und Anwenders die gesamte Instrumenten­ oberfläche mit Ausnahme des koagulierenden Arbeitsteils mit einer relativ aufwendigen und anwendungstechnisch problematischen Isolationsbeschichtung überzogen werden muß.By introducing electricity, all metal is usually standing lenen components of the instrument under power, so that for protection patient and user all instruments surface with the exception of the coagulating working part with a relatively complex and problematic in terms of application technology Insulation coating must be coated.

In der Praxis erweist sich diese Isolationsbeschichtung als proble­ matisch, weil das Beschichtungsmaterial den Strapazen des chir­ urgischen Gebrauchs und vor allem der Sterilisation auf Dauer nicht standhält, sodaß die Isolationsbeschichtung mechanisch beschädigt oder durch die Hitzeeinwirkung der Sterilisation in ihrer Materialkonsistenz beeinträchtigt werden kann, also brüchig wird. Eine beschädigte Isolationsbeschichtung kann Ursache für Fehl­ bewegungen des Anwenders sein und so den Patienten gefährden. Dabei bildet vor allem die, durch Oberflächenbeschichtung herge­ stellte Griffisolation einen besonderen Schwachpunkt, während die Rohrschaftisolation, bedingt durch den vorgefertigten Überzug in Form eines Schrumpfschlauches größeren Belastungen stand­ hält.In practice, this insulation coating proves to be a problem matically, because the coating material withstands the strain of the chir urgent use and, above all, long-term sterilization does not withstand, so the insulation coating mechanically damaged or by the heat of sterilization in their Material consistency can be affected, so it becomes brittle. A damaged insulation coating can cause failure movements of the user and thus endanger the patient. Above all, it forms the surface coating handle insulation posed a particular weakness, while the pipe shaft insulation due to the prefabricated cover stood in the form of a shrink tube larger loads  holds.

Auch die, bei diesem Instrumententyp oft eingesetzte Zahnsper­ renfunktion ist daher nur bei Einsatz von Kunststoffgriffen möglich, da die Isolation von metallenen Zahnsperren bei beschichteten Metallgriffen bedingt durch den Abrieb an der Zahnklinke eine sichere Isolation ausschließt.Also the tooth lock that is often used with this type of instrument renfunktion is therefore only possible when using plastic handles, because the isolation of metal tooth locks in coated Metal handles due to the abrasion on the tooth pawl excludes safe isolation.

Die erwähnten Kunststoffgriffe sind durchaus geeignet das Pro­ blem erheblich zu reduzieren, da sie keine Isolationsbeschichtung erfordern. Allerdings bedeutet die thermoplastische Herstellung von Kunststoffgriffen hohe werkzeugbedingte Vorkosten, die nur bei entsprechend großen Stückzahlen vertretbar sind. Grundsätz­ lich bleibt aber der Nachteil, daß Kunststoff, im Vergleich zu dem, bei Metallgriffen verwendeten Edelstahl, weit weniger belastbar ist und ähnlich wie die erwähnte Kunststoffbeschichtung, vor allem durch die Einwirkung der Sterilisationstemperatur beeinträchtigt wird.The plastic handles mentioned are quite suitable for the pro to reduce considerably because they have no insulation coating require. However, thermoplastic manufacturing means of plastic handles high tool-related upfront costs, which only are justifiable for correspondingly large quantities. Principle Lich, however, the disadvantage remains that plastic, compared to the Stainless steel used in metal handles is far less resilient and similar to the plastic coating mentioned, especially affected by the influence of the sterilization temperature becomes.

Aus den genannten Gründen stellt sich folglich die Aufgabe, eine Lösung zu finden, die es erlaubt einen Metallgriff mit interner Stromführung, aber ohne Oberflächenbeschichtung zu schaffen. Die erfindungsgemäße Lösung ergibt sich durch eine griffinterne Isolation des Elektrizitätsflusses, welche bewirkt, daß der Strom auf direktem Weg vom Anschlußstecker in das distal angeordnete Arbeitsteil geleitet wird, ohne dabei in den Metallgriff zu gelangen. Zu diesem Zweck ist der Rohrschaft (8) mit Betätigungsstange (1) im gesamten Griffbereich in einem Isolationskörper (2) aus Kunst­ stoff gefaßt, der seinerseits in einer Bohrung des Griffkörpers (7) untergebracht ist oder von einer Metallhülse (6) umgeben ist, wel­ che fest mit dem Griffkörper verbunden ist und so eine stabile Verbindung zum Griffkörper (7) ergibt. Der metallene und somit stromführende Rohrschaft (8) des Instruments ist axial in den Isolationskörper (2) eingebaut und so gegen den Griffkörper abge­ schirmt. Das Ende der Betätigungsstange (1) ragt proximal aus dem Isolationskörper (2) heraus, sodaß an dieser Stelle ein elek­ trisch nicht leitendes, in den Isolationskörper (2), axial beweglich eingepaßtes Mitnehmerbauteil (3) auf die Betätigungsstange (1) aufgesetzt ist, wo es nach vorne durch einen Anschlag an der Betätigungsstange (1) arretiert und nach hinten durch den, auf die Betätigungsstange (1) aufgesetzten Anschlag oder Anschluß­ stecker (5) axial unverrückbar festgehalten wird. Das Mitnehmerteil (3) ist ausseraxial am Griffhebel (4) angelenkt, sodaß die Betätigungsstange (1) durch diesen in axialer Richtung bewegt werden kann, ohne den Strom von der Betätigungsstange (1) in den Griff überzuleiten.For the reasons mentioned, the task therefore arises to find a solution which allows a metal handle with an internal current supply, but without a surface coating. The solution according to the invention results from an internal grip insulation of the flow of electricity, which causes the current to be conducted directly from the connector into the distal working part without getting into the metal handle. For this purpose, the tubular shaft ( 8 ) with actuating rod ( 1 ) in the entire handle area in an insulating body ( 2 ) made of plastic, which in turn is housed in a bore in the handle body ( 7 ) or is surrounded by a metal sleeve ( 6 ), which che is firmly connected to the handle body and thus results in a stable connection to the handle body ( 7 ). The metal and thus current-carrying tubular shaft ( 8 ) of the instrument is installed axially in the insulation body ( 2 ) and thus shielded against the handle body. The end of the actuating rod ( 1 ) protrudes proximally from the insulation body ( 2 ), so that at this point an electrically non-conductive, axially movably fitted driver component ( 3 ) is fitted onto the actuating rod ( 1 ) in the insulation body ( 2 ), where it is locked to the front by a stop on the actuating rod ( 1 ) and to the rear by the stop or connector ( 5 ) placed on the actuating rod ( 1 ). The driver part ( 3 ) is articulated axially on the handle lever ( 4 ), so that the actuating rod ( 1 ) can be moved in the axial direction by this, without transferring the current from the actuating rod ( 1 ) into the handle.

BezugszeichenlisteReference list

11

Betätigungsstange
Operating rod

22nd

Isolationskörper
Insulation body

33rd

Mitnehmerbauteil
Driver component

44th

Griffhebel
Handle lever

55

Anschlussstecker
Connector

66

Metallhülse
Metal sleeve

77

Griffkörper
Handle body

88th

Rohrschaft
Tubular shaft

99

Drehkopf
Turret

Claims (5)

1. Chirurgisches Rohrschaftinstrument für Hochfrequenzeinsatz mit interner Handgriffisolierung, dadurch gekennzeichnet, daß die elektrizitätsleitende Betätigungsstange (1) im Griffbereich von ei­ nem Isolationskörper (2) und einem in diesen, axial einmündenden, elektrisch isolierenden Mitnehmerbauteil (3) umgeben ist, welches bedingt durch einen beidseitigen Anschlag axial unverrückbar auf der Betätigungsstange (1) befestigt ist und ausseraxial so in den beweglichen Griffhebel (4) eingreift, daß die Betätigungsstange (1) über den Griffhebel (4) axial bewegbar ist.1. Surgical tubular shaft instrument for high-frequency use with internal handle insulation, characterized in that the electricity-conducting actuating rod ( 1 ) in the grip area of egg nem insulating body ( 2 ) and in this, axially opening, electrically insulating driver component ( 3 ), which is caused by a stop on both sides is fixed axially immovably on the actuating rod ( 1 ) and engages axially in the movable handle lever ( 4 ) in such a way that the actuating rod ( 1 ) can be moved axially via the handle lever ( 4 ). 2. Chirurgisches Rohrschaftinstrument für Hochfrequenzeinsatz mit interner Handgriffisolierung, dadurch nach Anspruch 1 gekenn­ zeichnet, daß der proximale Anschlag des Mitnehmerbauteils (3) als Anschlußstecker (5) ausgebildet ist, welcher auf das proximale Ende der Betätigungsstange (1) aufgesetzt ist.2. Surgical tubular shaft instrument for high-frequency use with internal handle insulation, characterized in that the proximal stop of the driver component ( 3 ) is designed as a connector ( 5 ) which is placed on the proximal end of the actuating rod ( 1 ). 3. Chirurgisches Rohrschaftinstrument für Hochfrequenzeinsatz mit interner Handgriffisolierung, dadurch nach Anspruch 1 gekenn­ zeichnet, daß der zylindrische Isolationskörper (2) in einer, am Griffkörper (7) angebauten Metallhülse (6) oder in einer Bohrung des Griffkörpers (7) axial befestigt ist und gleichzeitig dazu dient, den Rohrschaft (8) des Instruments mit dem Griffkörper (7) elek­ trisch abgeschirmt zu verbinden.3. Surgical tubular shaft instrument for high-frequency use with internal handle insulation, characterized in that the cylindrical insulating body ( 2 ) in a, on the handle body ( 7 ) attached metal sleeve ( 6 ) or in a bore of the handle body ( 7 ) is axially attached and also serves to connect the tubular shaft ( 8 ) of the instrument with the handle body ( 7 ) electrically shielded. 4. Chirurgisches Rohrschaftinstrument für Hochfrequenzeinsatz mit interner Handgriffisolierung, dadurch nach Anspruch 1 gekenn­ zeichnet, daß der Isolationskörper (2) den Mitnehmerteil (3) ganz oder teilweise übergreift und eine Aussparung aufweist, durch die das Mitnehmerteil (3) ausseraxial an den Griffhebel (4) anlenkbar ist. 4. Surgical tubular shaft instrument for high-frequency use with internal handle insulation, characterized in that the insulation body ( 2 ) overlaps the driver part ( 3 ) completely or partially and has a recess through which the driver part ( 3 ) off-axis to the handle lever ( 4th ) is articulated. 5. Chirurgisches Rohrschaftinstrument für Hochfrequenzeinsatz mit interner Handgriffisolierung, nach Anspruch 1 dadurch gekenn­ zeichnet, daß der Rohrschaft (8) des Instruments radial beweglich in den Isolationskörper (2) eingebaut ist, sodaß das Arbeitsteil über einen starr mit dem Rohrschaft (8) verbundenen Drehkopf (9) radial verstellbar ist.5. Surgical tubular shaft instrument for high-frequency use with internal handle insulation, characterized in that the tubular shaft ( 8 ) of the instrument is installed so that it can move radially in the insulating body ( 2 ), so that the working part has a rotary head rigidly connected to the tubular shaft ( 8 ) ( 9 ) is radially adjustable.
DE1998146703 1998-10-09 1998-10-09 Endosurgical tool, e.g. scissors or pliers, for high-frequency use, e.g. electrocoagulation; has electrically-conducting actuating rods enclosed by insulating body near handles and insulating drive part opening axially into them Withdrawn DE19846703A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1998146703 DE19846703A1 (en) 1998-10-09 1998-10-09 Endosurgical tool, e.g. scissors or pliers, for high-frequency use, e.g. electrocoagulation; has electrically-conducting actuating rods enclosed by insulating body near handles and insulating drive part opening axially into them

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1998146703 DE19846703A1 (en) 1998-10-09 1998-10-09 Endosurgical tool, e.g. scissors or pliers, for high-frequency use, e.g. electrocoagulation; has electrically-conducting actuating rods enclosed by insulating body near handles and insulating drive part opening axially into them

Publications (1)

Publication Number Publication Date
DE19846703A1 true DE19846703A1 (en) 2000-04-13

Family

ID=7884022

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1998146703 Withdrawn DE19846703A1 (en) 1998-10-09 1998-10-09 Endosurgical tool, e.g. scissors or pliers, for high-frequency use, e.g. electrocoagulation; has electrically-conducting actuating rods enclosed by insulating body near handles and insulating drive part opening axially into them

Country Status (1)

Country Link
DE (1) DE19846703A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10111111A1 (en) * 2001-03-08 2002-09-19 Deutsche Titan Gmbh Method of making a plate armored against shelling and splinters

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10111111A1 (en) * 2001-03-08 2002-09-19 Deutsche Titan Gmbh Method of making a plate armored against shelling and splinters

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Legal Events

Date Code Title Description
8120 Willingness to grant licenses paragraph 23
8139 Disposal/non-payment of the annual fee
8170 Reinstatement of the former position
8110 Request for examination paragraph 44
R120 Application withdrawn or ip right abandoned

Effective date: 20120925