Catheter for radiofrequency ablation of tumors

Details Catheter for radiofrequency ablation of tumors Catheter for radiofrequency ablation of tumors

A - Human Necessities

61

N

A61N 1/40 (2006.01) A61B 18/14 (2006.01)

Patent

CA 2275761

A catheter for the treatment of tumors by hyperthermia induced by radiofrequency or other energy comprises a tubular body (1) having a proximal end (2) connected to a handle member and near the other end a cooled metal plate (5) capable to act as active electrode provided with an electric cable (8) for connection to the energy generator and with thermistors (9,10) to be connected to the display of said generator, the tubular body (1) having at least a longitudinal channel (11,12) for the passage of tissual thermistors, a longitudinal channel (11,12) for the passage of electric cables and a pair of longitudinal channels for inflow and outflow pipes of the liquid cooling the metal plate (5). The metal plate can be built in a ring-like form, wherein the body of the ring has an empty space intended for the circulation of the cooling fluid.

Cathéter pour le traitement des tumeurs par hyperthermie en radiofréquence ou autre forme d'énergie, comprenant un corps tubulaire (1) à extrémité proximale (2) reliée à une poignée et, près de l'autre extrémité, à plaque métallique refroidie (5) pouvant tenir lieu d'électrode active dotée d'un câble électrique (8) de connexion au générateur d'énergie et à thermistances (9, 10) à raccorder au visuel du générateur. Le corps tubulaire (1) a au moins un canal longitudinal (11, 12) pour le passage des thermistances tissulaires, un canal longitudinal pour le passage des câbles électriques, et une paire de canaux longitudinaux pour les tuyaux d'entrée et de sortie du liquide de refroidissement de la plaque métallique (5), laquelle peut être annulaire avec un vide dans le corps de l'anneau pour la circulation du liquide de refroidissement.

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