Suture instrument 1, multiple systematic pieces S1, inserting S2, the grip section 40 which it grips and aforementioned multiple systematic pieces S1, it Perforating passing through S2, has with the suture needle 48 suture, aforementioned suture needle 48 advance and retreat possibly is supported vis-a-vis aforementioned grip section 40, advance and retreat direction of aforementioned suture needle 48, the aforementioned systematic piece S1 which is gripped by aforementioned grip section 40, S2 is configurated to the direction which is crossed.縫合器1は、複数の組織片S1,S2を挟み込んで把持する把持部40と、前記複数の組織片S1,S2を穿通して縫合する縫合針48とを備え、前記縫合針48は、前記把持部40に対して進退可能に支持されており、前記縫合針48の進退方向は、前記把持部40によって把持された前記組織片S1,S2と交差する方向に設定されている。
