Surgical instrument

A surgical instrument for placing linear staple sutures includes a body having a closed rectangular frame. Each of the lateral sides of the frame are provided with a slot which is located on an inner surface of the lateral side close to the adjacent side of the frame. The axis of the slot is parallel to each of the lateral sides. A die is provided with a plurality of recesses and secured on the adjacent side of the frame. The extreme recesses of the die are arranged inside the slots on the frame lateral sides. A staple head is accommodated in the body. A detachable staple magazine has a plurality of staple slots and positioned so that its portions provided with extreme staple slots should engage the slots in the lateral sides of the frame, a staple ejector, and actuators of the staple head and of the staple ejector, respectively.