To provide a suturing device capable of suturing a body tissue in a short time. A suturing device used by being inserted into a body. A front arm 51 having a thread support portion 51a for supporting both ends of the suture thread 6 and a front guide portion 53 attached to the thread support portion 51a, a needle-like member 52a, and the needle-like member 52a are directed in a predetermined first direction. Are attached to the needle support portion 52b and the front guide portion 53 that are supported in a state of being slidable in a direction substantially parallel to the first direction and rotatable about an axis substantially parallel to the first direction. And a rear arm 52 having a rear guide portion 52c. The front guide portion 53 is a first guide groove that guides the needle-like member 52a toward one end 6a of the suture thread 6 supported by the yarn support portion 51a when the rear arm 52 is slid in the first direction. 53e and a second guide groove 53e for guiding the suture thread 6 toward the other end 6b. [Selection] Figure 1B【課題】体内組織の縫合を短時間で行い得る縫合装置を提供すること。【解決手段】体内に挿入されて使用される縫合装置である。縫合糸６の両端を支持する糸支持部５１ａおよび糸支持部５１ａに取り付けられた前側ガイド部５３を有する前側アーム５１と、針状部材５２ａ、該針状部材５２ａを所定の第１方向を指向した状態で支持する針支持部５２ｂ、および前側ガイド部５３に該第１方向に実質的に平行する方向にスライド可能にかつ該第１方向に実質的に平行する軸周りに回動可能に取り付けられた後側ガイド部５２ｃを有する後側アーム５２とを備える。前側ガイド部５３は、後側アーム５２を前記第１方向にスライドさせた場合に、針状部材５２ａを糸支持部５１ａに支持された縫合糸６の一端６ａに向けて案内する第１ガイド溝５３ｅおよび該縫合糸６の他端６ｂに向けて案内する第２ガイド溝５３ｅを有する。【選択図】図１Ｂ
