| 摘要 |
<p>A surgical knot pusher device (11) is described which has a knot pushing head (13) mounted on the distal end of an elongated rod (12). The head of the device has a smoothly radius knot pushing surface (15) on the leading edge with two symmetrical suture paths (16, 17) which curve smoothly away from the knot pushing surface. The suture rests in a shallow groove which has a wall on either side to keep the suture in the groove (19). Near the leading edge of the pushing head the walls of the groove are lower so that the knot can be pushed directly against the tissue being sutured. On one side of the knot pushing head, there is a single eyelet (18) in the path of one of the suture ends. The eyelet is made so that the suture can be easily threaded through the eyelet with the curved needle which is on the end of the suture without any need to remove the needle. Preferably, at least the head of the device is made from polysulfide or another suitable plastic material. A method of using the surgical knot pusher device for tying knots in sutures to secure a valve prosthesis in place during closed chest mitral valve replacement surgery is described.</p> |
