PROBLEM TO BE SOLVED: To provide a medical suturing instrument significantly improving workability and operability.SOLUTION: A suturing instrument includes: a suture thread introduction needle 56 in which a suture thread is inserted a loop introduction needle 55 mounted substantially parallel to the suture thread introduction needle at a predetermined distance therefrom a support 51 for supporting them a housing 11 detachably housing the support a loop forming part having a loop formed at the tip end and movably inserted in the loop introduction needle a suture thread feed mechanism 52 for feeding the suture thread from the tip end of the suture thread introduction needle an operation part 12 provided in the housing and accepting an operation from an operator and a drive mechanism part which transmits motion of the operation part to the loop forming part and a suture thread feed mechanism. The drive mechanism part transmits the motion of the operation part to both the loop forming part and the suture thread feed mechanism, and feeds the loop and the suture thread from the tip end of the loop introduction needle and the tip end of the suture thread introduction needle.COPYRIGHT: (C)2013,JPO&INPIT【課題】作業性及び操作性を大幅に向上させた医療用縫合具を提供する。【解決手段】縫合糸が挿入される縫合糸導入用針56と、前記縫合糸導入用針から所定の距離を隔ててほぼ平行に取り付けられるループ導入用針55と、これらを支持する支持部51と、前記支持部が着脱自在に収容されるハウジング11と、先端にループが形成され、前記ループ導入用針の内部に移動可能に挿入されているループ形成部と、前記縫合糸導入用針の先端から前記縫合糸を送り出す縫合糸送り機構52と、前記ハウジングに設けられ、術者からの操作を受け付ける操作部12と、前記操作部の動きを前記ループ形成部及び前記縫合糸送り機構に伝達する駆動機構部と、を備え、前記駆動機構部によって、前記操作部の動きを前記ループ形成部及び前記縫合糸送り機構の双方に伝達し、前記ループ及び前記縫合糸を前記ループ導入用針の先端及び前記縫合糸導入用針の先端から送り出す。【選択図】図1