Problem to be solved: to provide a tonella which is capable of opening and closing the pinching portion of the clip provided at the distal end of the clip, which is suitable for clamping the artificial blood vessel.- TunnelingCylindrical shaft 2 andHandle 3 andClip member 1Provided with a cylindrical fixed member 4 for inserting the shaft and fixing the clip memberClip memberA clip holding portion 10 which can be opened and closed toward the tip thereof andA connecting portion 12 connected to a fixed member andA linear section 11 connecting the clip clamping portion and the connection portionAndShaft isA fixing member is disposed and provided with an elongated hole 21 at an arbitrary position to abut against it.The fixing member and the clip member can be connected by fastening through the elongated holeClip memberDepending on the operation of the handle, it can move back and forth in the length direction of the shaft in the longitudinal axis of the shaftBy moving the handle from the fixed member or moving in or out of the fixed memberThe clip holding portion can be opened and closed.Diagram【課題】簡単な機構によって、先端に設けたクリップの挟持部の開閉を可能にして、人工血管の挟持に適した開閉動作となるトンネラを提供する。【解決手段】トンネラは、円筒状のシャフト２と、ハンドル３と、クリップ部材１と、シャフトを挿通しクリップ部材を固定する円筒状の固定部材４とを備え、クリップ部材は、その先端部に向かって開閉可能なクリップ挟持部１０と、固定部材に連結する連結部１２と、クリップ挟持部と連結部とをつなぐ線状部１１と、からなり、シャフトは、固定部材が配設され当接する任意の位置に長孔２１を備え、該長孔を介して固定部材とクリップ部材とを留め具で連結でき、クリップ部材は、ハンドルの操作に応じてシャフトの長手軸方向に長孔の長さの範囲で進退可能で、ハンドルを固定部材から離隔又は近接する操作でシャフトが進退することにより、クリップ挟持部の開閉を自在とする。【選択図】図２
