The suture needle device includes a sheath portion, a pair of gripping members provided at the distal end portion of the sheath portion, an operation wire connected to the pair of gripping members and movable with respect to the sheath portion, and an operation wire extending along the longitudinal axis An operating portion main body formed in a shaft shape and connected to the sheath portion in a direction along a longitudinal axis and a longitudinal axis so as to be movable in a direction of the longitudinal axis and fixed to a proximal end portion of the operating wire, And a pulling member which is mounted to be able to move the operating wire in a direction along the longitudinal axis with respect to the operating portion main body, wherein on the outer peripheral surface of the operating portion main body, a first groove portion extending along the longitudinal axis, And a second groove portion in which the proximal end portion of the groove portion of the first groove portion and the distal end portion of the groove portion are connected to each other and the second groove portion extends around the longitudinal axis toward the proximal end side are formed in the first groove portion and the second groove portion A convex portion which is movable in the groove portion is provided.縫合持針器は、シース部と、シース部の先端部に設けられた一対の把持部材と、一対の把持部材に接続されシース部に対して移動可能な操作ワイヤと、長手軸に沿って延びる軸状に形成され、シース部に対して長手軸に沿う方向及び長手軸周りに移動可能に接続された操作部本体と、操作ワイヤの基端部に固定されるとともに操作部本体に対して移動可能に取付けられ、操作部本体に対して操作ワイヤを長手軸に沿う方向に移動させる牽引部材とを備え、操作部本体の外周面には、長手軸に沿って延びる第1の溝部と、第1の溝部の基端部と自身の先端部とが連なり、基端側に向かうにしたがって長手軸周りに延びる第2の溝部とが形成され、シース部には、第1の溝部及び第2の溝部内を移動可能な凸部が設けられている。
