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EP0479482B1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Electrosurgical laparoscopic cauterisation electrode

Assignee: MegaDyne Medical Products Inc
•
Filing: 1991-09-25
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Granted: 1996-05-01
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Expires: 2011-09-25
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Abstract

Abstract A laparoscopic cauterization electrode for connection to a source of appropriate electical power for performing deep surgical operations through an opening in a body such as thorax, perineal abdomen, rectum, or deep gynecological organs or similar body operations, comprising an electrically conductive electrode shaft (18) of a width sized for insertion through the body opening having a proximal (19) and a distal end (21), the proximal the of said electrode adapted for electrical connectivity to the power source and the distal end having teflon-coated operative tip (26) associated therewidth, insulation (24,22) for providing both electrical and thermal insulation and abrasion resistance along the electrode shaft between the proximal and distal ends of the electrode and the electrode shaft being of a sufficient length to extend from the exterior into the interior of a body for performing the deep surgical operations. <IMAGE>

Inventors

  • 👤 Peter Fan

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-23 10:31
CPC Classifications
A; A61; A61B; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B18/1482; A61B2018/00053; A61B2018/00107; A61B2018/1405; A61B2018/1412

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 106 words
A electrode for performing laparoscopic procedures, comprising an electrically conductive electrode shaft (10), having a proximal end (12) and a distal end (16), the proximal end (12) being adapted for electrical connection to a power source and the distal end having a blade (16) associated therewith, and insulating means (22) for providing both electrical and thermal insulation and abrasion resistance along the electrode shaft (10) between the proximal and distal ends thereof, wherein the blade (16) has substantially parallel flat sides, substantially parallel straight side edges, a blunt nose and rounded corners between the nose and the straight edges, and is entirely coated in non-stick material.
Claim 2
Dependent Claim 23 words
An electrode according to claim 1, wherein said electrode shaft (10) has a length within the range of about 18cm to about 41cm.
Claim 3
Dependent Claim 22 words
An electrode according to claim 1 or 2, wherein the non-stick coating (34) of the blade (16) comprises a layer of polytetraflouroethylene.
Claim 4
Dependent Claim 61 words
An electrode according to claim 1, 2 or 3, wherein the insulating means (22) is a smooth continuous coating of electrical and thermal insulation which terminates adjacent to the proximal end (12) of the shaft so that the shaft is exposed to provide for electrical connection and terminates adjacent the coated blade (16) so that the coated blade (16) is exposed.
Claim 5
Dependent Claim 36 words
An electrode according to any one of claims 1 to 4, wherein the insulating means (22) has an extension terminating partially onto the coated blade (16) such that only a portion of the blade is exposed.
Claim 6
Independent Claim 55 words
An apparatus for performing laparoscopic procedures, comprising: a trocar or catheter for placing in a body opening, said trocar or catheter having a flexible sealing opening therethrough; and an electrode according to any preceding claim, having a circular cross-section shaft (10) sized for sealing slip-fit through said flexible sealing opening in said trocar or catheter.
Claim 7
Independent Claim 76 words
An apparatus for performing laparoscopic procedures, comprising: an RF electrical energy source; a handheld pencil (14) electrically connected to said energy source and having an electrical connector for coupling to a working electrode and a hand operated switch for selectively activating or deactivating transmission of RF energy from the energy source to the electrical connector; and an electrode according to any one of claims 1 to 5 electrically connected to the pencil by the electrical connector.

References Cited (Backward Citations)

US3799168A Cited
US4545375A Cited

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