Patent ID: 7326209
Filing Date: 2008-02-05
Classification: A61B

Abstract:
1. A bipolar high frequency treatment tool for an endoscope, comprising: a flexible insulating tube configured to be inserted through an accessory channel of the endoscope, said insulating tube having a pair of generally circular guide channels extending over a length of the insulating tube, said guide channels are arranged symmetric with respect to a longitudinal center axis of said insulating tube and spaced from each other by about 0.5 mm; a pair of electrodes pivotably supported at the distal end of said insulating tube so as to open and close like a pair of pincers; and a pair of conductive wires, each wire passed through a different one of said pair of guide channels and coupled to a respective electrode of said pair of electrodes to provide high frequency power to said pair of electrodes, the pair of conductive wires being naked twisted stainless steel wires, wherein: each of said guide channels has an inner diameter slightly larger than an outer diameter of said conductive wire; and a plane defined by said pair of conductive wires is different from a plane defined by opening and closing motion of said pair of electrodes.