Lasso knot-tying device

Abstract

The invention relates to a medical knot-tying device, in particular to a lasso knot-tying device. The lasso knot-tying device comprises a winding sleeve, a fixed bar and a movable bar, wherein an opening is arranged in the side wall of the winding sleeve, one end of the fixed bar is connected with the outer wall of the winding sleeve, the fixed bar is hinged with the movable bar, a spring is arranged between the movable bar and the fixed bar, one end of the movable bar is connected with a knockout pin, and a support bar is arranged on the knockout pin. Compared with the prior art, the lasso knot-tying device has the advantages that the suture line is arranged above the fixed bar for winding the outer wall of the winding drum for one circle, one end of the suture line is placed on a support bar from the opening, the movable bar is pressed down, the support bar drives the suture line to upwards move, and when the suture line integrally separates from the winding drum, the suture line is made into a required lasso. The lasso knot-tying device has the characteristics of simple structure, convenience for manufacture and capability of increasing efficiency and quality of making the lasso.

Description

Technical field: [0001] The invention relates to a medical knotter, in particular to a lasso knotter. Background technique: [0002] Absorbable sutures with strong tensile strength are required when anastomosing thicker tendons. Since tendons are composed of longitudinal fibers, conventional sutures are prone to splitting and slipping. Cable sutures are required to ensure suture quality and avoid postoperative sutures. The tendon splits and slips, and the broken ends are separated. From the "Lasso Lock Knot Misplaced Suture Suspension Fixation Method for Repair of Knee Joint Medial Collateral Ligament Starting Point" published in "Chinese Journal of Prosthetic and Reconstructive Surgery" Vol. 24 No. 6 in 2010 and Vol. 25 No. 1 in 2011 The two articles of "Repair of Acute Achilles Tendon Rupture with Three-dimensional Suture of Lariat Lock Knot" show that the noose lock knot has strong anti-slip and anti-splitting effects, and can be used in patellar tendon, Achilles tendon ...

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Problems solved by technology

From the "Lasso Lock Knot Misplaced Suture Suspension Fixation Method for Repair of Knee Medial Collateral Ligament Starting Point" published in "Chinese Journal of Prosthetic and Reconstructive Surgery" Vol. 24 No. 6 in 2010 and Vol. 25 No. 1 in 2011 The two articles "Lasso-lock knot three-dimensional suture repair of acute tearing Achilles tendon rupture" show that the noose-lock knot has a strong anti-slip and anti-split effect, and is used in the patellar tendon, Achilles tendon and medial collateral ligament It is commonly used in the operation of relatively thick tendon injuries, but because there is no special knotting tool, it usually needs to be knotted by hand to complete this operation, resulting in a slow operation speed

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