The suturing device includes a flexible tubular insertion portion, a suture portion provided at a distal end portion of the insertion portion and holding a tubular anchor through which a suture thread can be inserted, and a proximal end portion of the insertion portion An operation portion provided in the insertion portion, and a thread gripping portion that is inserted through the insertion portion and configured to be able to pass through the anchor, and the stitching portion includes an installation surface that holds the anchor, and the anchor. A pressing member that has a convex portion to be pressed, the pressing member disposed so as to face the installation surface, and a driver that is connected to the operation unit and operates the pressing member, By driving the driver, the anchor is sandwiched and pressed between the installation surface and the convex portion, and is deformed into a substantially V shape.この縫合装置は、可撓性を有する管状の挿入部と、前記挿入部の先端部に設けられ、縫合糸を挿通可能な管状のアンカーが保持される縫合部と、前記挿入部の基端部に設けられた操作部と、前記挿入部に挿通され、前記アンカーに挿通可能に構成された糸把持部と、を備え、前記縫合部は、前記アンカーが保持される設置面と、前記アンカーを押圧する凸部を有し、前記凸部が前記設置面に対向するように配置された押圧部材と、前記操作部と接続され、前記押圧部材を作動させるためのドライバと、を有し、前記ドライバを駆動することにより、前記アンカーが、前記設置面と前記凸部との間に挟まれて押圧され、略Ｖ字状に変形されるように構成されている。
