Patent ID: 6712817
Filing Date: 2004-03-30
Classification: A61B

Abstract:
A treatment instrument comprising:a main body adapted to be inserted into an endoscope channel; a cutting wire having an insertion portion inserted in said main body, and an exposed portion that is exposed outside said main body, said cutting wire being adapted to be supplied with high-frequency current; and an insulating member that covers a peripheral surface of a part of said exposed portion of said cutting wire, wherein said exposed portion of said cutting wire is substantially straight and comprises an insulated portion which is the part of said exposed portion of said cutting wire whose peripheral surface is covered by the insulating member, and a non-insulated portion which is not covered by the insulating is member and which is preset to extend in a range of 5 mm to 15 mm from a distal end of the exposed portion of said cutting wire, wherein said non-insulated portion of said exposed portion of the cutting wire comprises an excision portion of said treatment instrument, wherein said main body is bendable, and wherein said substantially straight exposed portion of the cutting wire is exposed outside said main body through side ports provided in a side surface of a distal end portion of said main body, and said substantially straight exposed portion of the cutting wire extends adjacent to the side surface of the distal end portion of the main body between the side ports in a longitudinal direction of said main body.