| 摘要 |
<p>A method and device (20) for intracorporeal knot tying. The device comprises an elongated, tubular member (22) formed of a shape memory material for carrying a suture thread (25) through an internal passage. A distal end (23) of the tube is formed with a bight (28). An outer sheath (21) supports the remaining length of the tube (22). When a knot is to be formed, a free end of the suture (25) is pulled through the performed bight (28). The tube and sheath then move relative to each other to straighten the bight (28) and throw off a knot in the suture thread (25) for subsequent tightening.</p> |
