Some content of this application is unavailable at the moment.
If this situation persists, please contact us atFeedback&Contact
1. (EP0528868) TEMPERATURE CONTROLLED RF COAGULATION

Office : European Patent Office
Application Number: 91908937 Application Date: 26.04.1991
Publication Number: 0528868 Publication Date: 03.03.1993
Publication Kind : A4
Prior PCT appl.: Application Number:US1991002898 ; Publication Number: Click to see the data
IPC:
A 61B
A61B 17/00
A61B 17/42
A61B 18/12
A61B 18/14
(Deprecated)
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
B
DIAGNOSIS; SURGERY; IDENTIFICATION
17
Surgical instruments, devices or methods, e.g. tourniquets
36
Electrosurgical apparatus or circuits therefor; Cauterisation instruments for surgical purposes; Moxaburners; Cryogenic technique
38
Electrically heated apparatus
39
using high frequency current
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
B
DIAGNOSIS; SURGERY; IDENTIFICATION
17
Surgical instruments, devices or methods, e.g. tourniquets
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
B
DIAGNOSIS; SURGERY; IDENTIFICATION
17
Surgical instruments, devices or methods, e.g. tourniquets
42
Gynaecological or obstetrical instruments or methods
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
B
DIAGNOSIS; SURGERY; IDENTIFICATION
18
Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
04
by heating
12
by passing a current through the tissue to be heated, e.g. high-frequency current
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
B
DIAGNOSIS; SURGERY; IDENTIFICATION
18
Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
04
by heating
12
by passing a current through the tissue to be heated, e.g. high-frequency current
14
Probes or electrodes therefor
CPC:
A61B 18/1492
A61B 18/1206
A61B 18/1402
A61B 18/1442
A61B 2017/00084
A61B 2017/00274
A61B 2017/00292
A61B 2017/4233
A61B 2018/00357
A61B 2018/00547
A61B 2018/00577
A61B 2018/00726
A61B 2018/00791
A61M 2205/32
A61M 2230/04
Applicants: BOSTON SCIENTIFIC CORPORATION
Inventors: LENNOX, CHARLES, D.
Priority Data: 07515850 27.04.1990 US
Title: (DE) TEMPERATURKONTROLLIERTE KOAGULATION MITTELS HOCHFREQUENZ.
(EN) TEMPERATURE CONTROLLED RF COAGULATION
(FR) COAGULATION INDUITE A UNE TEMPERATURE COMMANDEE PAR HF.
Abstract:
(EN) Radiofrequency medical devices for ohmic heating of tissue of a patient include a temperature sensor (29) carried by and in thermally conductive relationship with a thermally conductive electrode (28). The sensor (29) is connected for feedback to a control circuit (6) that modulates RF power applied to the electrode according to the signal received from the temperature sensor (29). The control circuit (6) and RF power supply alternate between two operating modes. In the first mode the RF power supply applies RF power to the electrode (28). In the second mode the control circuit (6) senses a signal from the temperature sensor (29) in the absence of RF signal. The control circuit (6) compares the signal from the temperature sensor (29) to a set value and modulates the RF power applied to the electrode (28) in accordance with the set value.
(FR) Dispositifs médicaux à haute fréquence servant au chauffage ohmique de tissus d'un patient et comportant un détecteur de température (29) qui est actionné par un lien thermoconducteur avec une électrode thermoconductrice (28). Le détecteur (29) est connecté par une ligne de retour au circuit de commande (6) qui module le courant HF fourni à l'électrode conformément au signal reçu du détecteur de température (29). Le circuit de commande (6) et l'alimentation en courant HF alterne entre deux modes de fonctionnement. Dans le premier mode, l'alimentation en courant fournit un courant HF à l'électrode (28). Dans le deuxième mode, le circuit de commande (6) détecte un signal émis par le détecteur de température (29) en l'absence d'un signal HF. Le circuit de commande (6) compare le signal émis par le détecteur de température (29) à une valeur préétablie et module le courant HF fourni à l'électrode (28) d'après la valeur établie.
Also published as:
JPH06500476CA2081464WO/1991/016859