Patent ID: 6478794
Filing Date: 2002-11-12
Classification: A61B

Abstract:
A bi-polar coagulation and cutting device for endoscopic surgery comprising: a proximal operating part, a shaft part connected at one end to said operating part and a distal grasping part connected to the other end of said shaft part and including jaws which are movable toward, and away from, each other by axial movement of said shaft or part thereof for the engagement and coagulation of tissue engaged therebetween, each of said jaws including two spaced branches, a cutting structure disposed between the two spaced branches of the jaws for cutting the tissue in the space between the two branches after coagulation of that tissue, each of said branches being disposed at the end of an elastic support wire disposed in said shaft and being curved so as to normally bias said jaws away from each other and a wire electrode formed at one end of an elastic wire also disposed in said shaft and being disposed between the elastic support wires of said spaced branches of one of said jaws and being bent further outwardly than the support wires carrying said jaw branches so that, when said sleeve is advanced, first said jaws are pressed together for the engagement of tissue therebetween and, upon further advancement of said sleeve, said wire electrode is moved inwardly through the space between said jaw branches and against tissue engaged therebetween, which tissue is cut by said electrode when high frequency power is supplied to said electrode.