Hollow porous absorbable suture line and preparation method

Abstract

The invention provides a hollow porous absorbable suture line and a preparation method thereof. Non-absorbable woven yarn and absorbable axial yarn are prepared into the hollow porous absorbable suture line through the two-dimensional three-axial weaving technology and the thermal treatment technology. The preparation method comprises the steps that firstly, woven yarn and axial yarn are performedon the surface of a lining tube, a suture line with the porous surface is obtained, and the pore size is adjustable in the axial direction; then, due to the thermal treatment technology, the axial yarn is partially fused to fix a weaving point of the woven yarn; finally, the lining tube is removed, and the hollow porous suture line of the stable structure is obtained. The suture line is partiallyabsorbable, mechanical supporting can be ensured, and the non-absorbable ratio can be lowered; due to the hollow porous structure, tissue ingrowth is facilitated, tissue regeneration is promoted, when the suture line is in use, the stress of the suture line is in a ribbon shape, and cutting of tissue is reduced. By adopting the integrated forming technology by combining weaving and thermal setting, no welding, bonding and other post-treatment technologies are needed, the procedures are simple, and processing is convenient.

Description

technical field

[0001] The invention belongs to the technical field of biomedical textile products, in particular to an absorbable orthopedic suture with a hollow porous part and a preparation method thereof. Background technique

[0002] Tendon and ligament injuries are very common. Due to their special tissue structure and biological characteristics, their self-healing ability is poor. Effective surgery is the main method to repair damaged tendons and ligaments. Suture is an important material for tendon and ligament repair, and its material, structure, mechanical and biological properties have an important impact on tendon and ligament repair, healing and regeneration. Due to the long repair time of tendons and ligaments, the mechanical properties of sutures are high. Although absorbable sutures have better biological performance, due to hydrolysis and enzymolysis in the body, it is easy to reduce its strength and lose its support for tendons / ligaments. It is difficult t...

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