Device and method for intracorporeal and extracorporeal laparoscopic suturing and knot tying
An apparatus for laparoscopic intracorporeal knot tying includes a needle grasper including a needle holder shaft and a needle holder jaw located at a distal end of the needle holder shaft, and a knot loop grasper including a knot loop holder shaft, which is slidable on the needle holder shaft, and a knot loop holder jaw located at a distal end of the knot loop holder shaft. In an inactive state of the apparatus, the knot loop holder is located proximal to the needle holder jaw. In an active state of the apparatus at a time of a knot tying, the knot loop holder jaw slides on the needle holder shaft toward the distal end of the needle holder shaft and beyond the needle holder jaw to carry components of a knot over a standing end of a suture held by the needle holder jaw.
1. A method of making an extracorporeal sliding knot, the method comprising:
providing a loop knot guide comprising a u-shaped wire that comprises a u-shaped edge in a distal end, a first arm, and a second arm ending at a proximal end,
wherein a first arm end includes a handle, and a second arm end is blunt and free;
providing a suture with a standing end and a working end extracorporeally;
inserting the standing end in a space within the u-shaped wire and pushing the standing end towards an end of an inner side of the u-shaped edge;
wrapping the working end around the first arm and the second arm to form a sliding knot configuration; and
pulling the standing end of the suture entrapped within the u-shaped edge proximally through component loops formed by the working end over the first arm and the second arm to form the sliding knot configuration extracorporeally.