The invention relates to a non-absorbable surgical suture, the suture is provided with one or more spaced barbs, the barbs are three-dimensional tiny uniformly distributed on the surface of the suture, there are no barbs in the middle part of the suture, and the suture can be connected with a double-needle or single-needle suture needle. The preparation method of the suture comprises: extruding a medical suture material selected from polypropylene or polyamide through a twin-screw extruder and slicing to obtain spinning raw materials; drying the spinning raw materials to a moisture content of less than 0.005wt%, adding into a spinning machine for spinning, and cooling the filament to obtain as-spun fiber; chemically crosslinking the spun fiber to enhance its physical and mechanical properties; clamping the head and tail ends of the crosslinked fiber filament with a fixture, and processing to obtain a barbed suture. Through chemical crosslinking treatment and barb arrangement of a specific suture, the invention improves the tensile strength of the barbed suture and solves the problem of easy breakage. The high-strength barbed suture can be used as a minimally invasive surgical instrument in surgical operations, such as arthroscopic soft tissue repair surgery, and has a good application prospect.
Area Code: CN
Application Number: CN202411570602.0
