An electrosurgical instrument

Details An electrosurgical instrument An electrosurgical instrument

A - Human Necessities

61

B

A61B 18/14 (2006.01) A61B 18/12 (2006.01)

Patent

CA 2242352

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.

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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