PROBLEM TO BE SOLVED: To provide an introduction instrument capable of indwelling a nerve stimulation electrode so as to reduce stimulation to tissue which is not a treatment object.SOLUTION: The introduction instrument 10 includes: a cylindrical body 11 having an internal cavity a dissection member 12 provided with a blunt dissection part 12B for bluntly dissecting biological tissue, formed so as to be transparent, and attached to the distal end portion of the body 11 and discrimination electrodes 18 and 19 provided to at least one of the outer surface of the distal end portion of the body 11 and the outer surface of the dissection member 12.COPYRIGHT: (C)2013,JPO&INPIT【課題】治療対象でない組織への刺激を低減するように神経刺激電極を留置することを可能にする導入具を提供する。【解決手段】導入具10は、内腔を有する筒状の本体11と、生体組織を鈍的切開する鈍的切開部12Bを有し、透明性を有するように形成されて本体11の先端部に取り付けられた切開部材12と、本体11の先端部の外面および切開部材12の外面の少なくとも一方に設けられた判別電極18、19と、を備える。【選択図】図1
