초록 ▼

A surgical knot pusher device is described which has a knot pushing head mounted on the distal end of an elongated rod. The head of the device has a smoothly radiused knot pushing surface on the leading edge with two symmetrical suture paths which curve smoothly away from the knot pushing surface. T

A surgical knot pusher device is described which has a knot pushing head mounted on the distal end of an elongated rod. The head of the device has a smoothly radiused knot pushing surface on the leading edge with two symmetrical suture paths 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. 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 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 polysulfone or another suitable plastic material. A method for tying knots in surgical sutures using the surgical knot pusher device is described with special reference to using the device and method for endoscopic surgery. The surgical knot pusher device is especially well adapted for tying sutures in a new procedure for closed chest mitral valve replacement surgery. 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.

대표청구항 ▼

A surgical knot pusher, comprising: an elongate shaft having a proximal end and a distal end, a knot pushing surface proximate said distal end, said knot pushing surface defining an arc having a convex curvature, said arc having a first end, a second end and an apex intermediate said first end and s

A surgical knot pusher, comprising: an elongate shaft having a proximal end and a distal end, a knot pushing surface proximate said distal end, said knot pushing surface defining an arc having a convex curvature, said arc having a first end, a second end and an apex intermediate said first end and said second end, a first suture path extending along said arc from said apex to said first end and a second suture path extending along said arc from said apex to said second end, said first suture path and said second suture path lie within a groove, said groove being defined by a first wall and a second wall, said first wall and said second wall being approximately parallel to one another, said groove between said first wall and said second wall has a first depth proximate said apex of said arc and a second depth proximate said first end and said second end of said arc, said second depth being greater than said first depth, and an eyelet positioned along said first suture path, said eyelet having an aperture therethrough, said aperture being in alignment with said first suture path.