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 themInfo
- 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- Withdrawn
Links
- 238000009297 electrocoagulation Methods 0.000 title 1
- 238000009413 insulation Methods 0.000 claims description 18
- 239000002184 metal Substances 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 description 8
- 238000000576 coating method Methods 0.000 description 8
- 239000004033 plastic Substances 0.000 description 5
- 230000005611 electricity Effects 0.000 description 3
- 230000001954 sterilising effect Effects 0.000 description 3
- 238000004659 sterilization and disinfection Methods 0.000 description 3
- 230000001112 coagulating effect Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 241000766026 Coregonus nasus Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002324 minimally invasive surgery Methods 0.000 description 1
- 239000006223 plastic coating Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 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
-
- 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
-
- 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
- A61B2018/00053—Mechanical features of the instrument of device
- A61B2018/00059—Material properties
- A61B2018/00071—Electrical conductivity
- A61B2018/00083—Electrical 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
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.
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)
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)
| 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 |
-
1998
- 1998-10-09 DE DE1998146703 patent/DE19846703A1/en not_active Withdrawn
Cited By (1)
| 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 |