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1. WO1997024993 - AN ELECTROSURGICAL INSTRUMENT

Publication Number WO/1997/024993
Publication Date 17.07.1997
International Application No. PCT/GB1997/000065
International Filing Date 09.01.1997
Chapter 2 Demand Filed 06.08.1997
IPC
A61B 18/12 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
18Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
04by heating
12by passing a current through the tissue to be heated, e.g. high-frequency current
A61B 18/14 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
18Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
04by heating
12by passing a current through the tissue to be heated, e.g. high-frequency current
14Probes or electrodes therefor
CPC
A61B 18/1206
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
18Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
04by heating
12by passing a current through the tissue to be heated, e.g. high-frequency current
1206Generators therefor
A61B 18/148
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
18Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
04by heating
12by passing a current through the tissue to be heated, e.g. high-frequency current
14Probes or electrodes therefor
148having a short, rigid shaft for accessing the inner body transcutaneously, e.g. for neurosurgery or arthroscopy
A61B 18/1485
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
18Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
04by heating
12by passing a current through the tissue to be heated, e.g. high-frequency current
14Probes or electrodes therefor
1485having a short rigid shaft for accessing the inner body through natural openings
A61B 2018/00083
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
18Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
00053Mechanical features of the instrument of device
00059Material properties
00071Electrical conductivity
00083low, i.e. electrically insulating
A61B 2018/00517
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
18Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
00315for treatment of particular body parts
00505Urinary tract
00517Urinary bladder or urethra
A61B 2018/00547
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
18Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
00315for treatment of particular body parts
00547Prostate
Applicants
  • GYRUS MEDICAL LIMITED [GB]/[GB] (AllExceptUS)
  • GOBLE, Nigel, Mark [GB]/[GB] (UsOnly)
  • GOBLE, Colin, Charles, Owen [GB]/[GB] (UsOnly)
Inventors
  • GOBLE, Nigel, Mark
  • GOBLE, Colin, Charles, Owen
Agents
  • PRATT, David, Martin
Priority Data
9600354.609.01.1996GB
9619015.211.09.1996GB
9619999.725.09.1996GB
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) AN ELECTROSURGICAL INSTRUMENT
(FR) INSTRUMENT ELECTROCHIRURGICAL
Abstract
(EN)
An electrosurgical instrument is disclosed for the treatment of tissue in the presence of an electrically-conductive fluid. The instrument comprises an instrument shaft (32), and a tissue treatment electrode (31) at one end of the shaft, the tissue treatment electrode being constructed to define a plurality of pockets for trapping electrically-conductive fluid. Alternatively, the tissue treatment electrode (81) is made from an electrically-conductive material (81a) and is coated with a resistive inert material (81b) which is effective to increase the local power density within the tissue treatment electrode.
(FR)
Cette invention concerne un instrument électrochirurgical utilisé pour traiter des tissus en présence d'un milieu fluide électroconducteur. Cet instrument comporte un axe (32) dont une extrémité est dotée d'une électrode (31) de traitement des tissus construite de façon à définir une pluralité de poches servant à piéger le fluide électroconducteur. Selon une autre réalisation, l'électrode (81) de traitement des tissus est en matière électroconductrice (81a) et est recouverte d'une matière à résistance inerte (81b) qui accroît efficacement la densité de puissance locale à l'intérieur de l'électrode de traitement des tissus.
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