WO1997003619A3 - Coaxial electrosurgical instrument - Google Patents

Coaxial electrosurgical instrument Download PDF

Info

Publication number
WO1997003619A3
WO1997003619A3 PCT/US1996/012065 US9612065W WO9703619A3 WO 1997003619 A3 WO1997003619 A3 WO 1997003619A3 US 9612065 W US9612065 W US 9612065W WO 9703619 A3 WO9703619 A3 WO 9703619A3
Authority
WO
WIPO (PCT)
Prior art keywords
electrodes
tissue
electrode
outer electrode
inner electrode
Prior art date
Application number
PCT/US1996/012065
Other languages
French (fr)
Other versions
WO1997003619A2 (en
Inventor
Gary Long
Original Assignee
Laser Centers Of America
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 Laser Centers Of America filed Critical Laser Centers Of America
Priority to AU65068/96A priority Critical patent/AU6506896A/en
Publication of WO1997003619A2 publication Critical patent/WO1997003619A2/en
Publication of WO1997003619A3 publication Critical patent/WO1997003619A3/en

Links

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
    • 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
    • A61B18/1402—Probes for open surgery

Abstract

A coaxial electrosurgical instrument has an elongate inner electrode (702) insulated from and contained coaxially within a hollow tubular elongate outer electrode (706). A controlled, high-frequency, potential difference is provided between the electrodes under the user's control when the uninsulated distal end portions thereof are simultaneously contacted to tissue. Tissue is readily and cleanly cut between the inner and outer electrodes by the current which flows by applying a controlled, continuous, undamped high frequency voltage difference between the electrodes. Cauterization and coagulation may be performed by a periodically damped frequency electrical potential difference. The outer electrode is preferably formed to have an inclined end surface (716), and the cooperating inner electrode is advantageously formed with a distal end part (726) inclined to the common axis of the electrodes and ending in a smoothly rounded bulbous end (1250) for contacting tissue to perform the surgical operations. The bulbous rounded end of the inner electrode extends forwardly of the outer electrode and also extends radially outwardly thereof and enables a gentle hooking force to be applied to hold tissue between the two electrodes to enable precise surgical operations thereon.
PCT/US1996/012065 1995-07-21 1996-07-22 Coaxial electrosurgical instrument WO1997003619A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU65068/96A AU6506896A (en) 1995-07-21 1996-07-22 Coaxial electrosurgical instrument

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US50554395A 1995-07-21 1995-07-21
US08/505,543 1995-07-21

Publications (2)

Publication Number Publication Date
WO1997003619A2 WO1997003619A2 (en) 1997-02-06
WO1997003619A3 true WO1997003619A3 (en) 1997-03-06

Family

ID=24010735

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1996/012065 WO1997003619A2 (en) 1995-07-21 1996-07-22 Coaxial electrosurgical instrument

Country Status (2)

Country Link
AU (1) AU6506896A (en)
WO (1) WO1997003619A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9813042D0 (en) 1998-06-17 1998-08-12 Nuvotek Ltd Electrosurgical cutting tool
CN111658128B (en) * 2020-07-08 2023-09-22 安瑞医疗器械(杭州)有限公司 Multifunctional high-frequency cutter

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4936301A (en) * 1987-06-23 1990-06-26 Concept, Inc. Electrosurgical method using an electrically conductive fluid
US5009656A (en) * 1989-08-17 1991-04-23 Mentor O&O Inc. Bipolar electrosurgical instrument
US5261906A (en) * 1991-12-09 1993-11-16 Ralph Pennino Electro-surgical dissecting and cauterizing instrument
US5267994A (en) * 1992-02-10 1993-12-07 Conmed Corporation Electrosurgical probe

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4936301A (en) * 1987-06-23 1990-06-26 Concept, Inc. Electrosurgical method using an electrically conductive fluid
US5009656A (en) * 1989-08-17 1991-04-23 Mentor O&O Inc. Bipolar electrosurgical instrument
US5261906A (en) * 1991-12-09 1993-11-16 Ralph Pennino Electro-surgical dissecting and cauterizing instrument
US5267994A (en) * 1992-02-10 1993-12-07 Conmed Corporation Electrosurgical probe

Also Published As

Publication number Publication date
AU6506896A (en) 1997-02-18
WO1997003619A2 (en) 1997-02-06

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