PROBLEM TO BE SOLVED: To provide a medical treatment instrument and a medical treatment device which have simple device structures and can be used by switching functions of a laser knife and an electric knife.SOLUTION: A medical treatment instrument inserted into a body lumen is composed of a conductive hollow waveguide for guiding carbon dioxide laser which can dissect contactlessly and a blade electrode 21 provided at an end of the hollow waveguide. The hollow waveguide is provided with a connection terminal 13 for conducting high-frequency current between a counter electrode in contact with an organism to be treated and the blade electrode 21.COPYRIGHT: (C)2015,JPO&INPIT【課題】簡単な装置構成でレーザメスと電気メスとの機能を切り替えて使用できる医療用処置具及び医療用処理装置を提供することを目的とする。【解決手段】体腔内に挿入される医療用処置具を、非接触で切開可能な炭酸ガスレーザ光を導波する導電性の中空導波管と、中空導波管の先端に備えたブレード電極21とで構成し、中空導波管に、処置対象である生体に接触する対向電極とブレード電極21との間に高周波電流を通電する接続端子13を備えた。【選択図】図1
