Patent ID: 7780702

Claim:
A suture tool comprising an engaging member which is detained in a biological tissue, a suture thread which is drawn from the engaging member, and a fixing member which is penetrated by the suture thread and which restricts a looseness of the suture thread from the biological tissue anastomosed by the suture thread, wherein the fixing member includes: a base portion which has a thin and longitudinal plate shape and which has a through-hole through which the suture thread passes; and a pair of bent pieces of which ends are opposed to each other by bending both end portions of the base portion toward the center thereof, wherein each of the pair of bent pieces includes: a thin plate portion; a thick plate portion which is disposed at the end of the bent piece and which has a thickness thicker than the thin plate portion, the thick plate portion being provided on only a part of the bent piece in a width direction of the bent piece and disposed toward one lateral edge of the bent piece such that the thin plate portion is provided at the end of the bent piece between the thick plate portion and the other lateral edge of the bent piece, the one lateral edge and the other lateral edge being parallel to a longitudinal direction of the bent piece; and an engaging protrusion which protrudes from the thick plate portion along the longitudinal direction of the bent piece, and the engaging protrusion of one of the pair of bent pieces is fit into the thin plate portion of the other of the pair of bent pieces provided at the end between the thick plate portion and the other lateral edge.