To provide a [problem] mounting of the IBG procedure for the guide pin, remove resistance and pin holder which is excellent in rotation-preventing properties, suitable IBG procedure for the guide pin to this pin holder, and IBG procedure surgical instrument comprising these . A pin holder 1, insertion holes 21 that are located at the distal end. 2A, hole-shaped housing portion 22 which is spaced between the insertion hole, and the insertion hole and the housing part a main body 2 having an opening communicating with the space located between a fixed portion 3 having a pawl portion that is accommodated in the space from the opening, provided with the accommodating portion, among the tubular further comprising a convex portion 4 that is located on the peripheral surface. .FIELD 2【課題】IBG手技用ガイドピンの取り付け性、取り外し性および回旋防止性に優れるピンホルダー、このピンホルダーに好適なIBG手技用ガイドピン、およびこれらを備えるIBG手技用手術器具を提供する。【解決手段】ピンホルダー1は、先端部2Aに位置している挿通孔21、挿通孔との間に間隔をおいて位置している孔状の収容部22、および挿通孔と収容部との間に位置している空間に連通している開口部を有する本体部2と、開口部から空間内に収容される爪部を有する固定部3と、を備え、収容部は、筒状の内周面に位置している凸部4をさらに備える。【選択図】図2
