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1. (WO1991016859) TEMPERATURE CONTROLLED RF COAGULATION
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/016859 International Application No.: PCT/US1991/002898
Publication Date: 14.11.1991 International Filing Date: 26.04.1991
Chapter 2 Demand Filed: 14.11.1991
IPC:
A61B 17/00 (2006.01) ,A61B 17/42 (2006.01) ,A61B 18/12 (2006.01) ,A61B 18/14 (2006.01)
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
Applicants:
BOSTON SCIENTIFIC CORPORATION [US/US]; 480 Pleasant Street Watertown, MA 02172, US
Inventors:
LENNOX, Charles, D.; US
Agent:
FRENCH, Timothy, A.; Fish & Richardson 225 Franklin Street Boston, MA 02110-2804, US
Priority Data:
515,85027.04.1990US
Title (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.
Designated States: CA, JP
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0528868JPH06500476CA2081464