An artificial ligament

By using sutures and multifilaments to form the warp yarns in the artificial ligament, laser perforation is performed only in the multifilament area, and a channel spacing of 1-3mm is set. This solves the problems of decreased ligament strength and loose structure after perforation, achieving high strength, flexibility and biocompatibility of the ligament, adapting to laser processing technology, and ensuring long-term stability and fatigue resistance.

CN121818166BActive Publication Date: 2026-06-30HANGZHOU BERKEMAN BIOTECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HANGZHOU BERKEMAN BIOTECHNOLOGY CO LTD
Filing Date
2026-03-13
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing artificial ligaments are prone to warp breakage during the perforation process, resulting in decreased strength and an inability to effectively maintain joint stability and normal function. Furthermore, traditional weft materials are prone to loosening after perforation, affecting structural integrity and biocompatibility.

Method used

An artificial ligament is designed using sutures and multifilaments as warp yarns. Laser perforation is performed only in the multifilament area to create through channels with a spacing of 1-3 mm. This ensures the integrity of the suture structure and provides core mechanical support through the sutures, while the multifilaments enhance flexibility.

Benefits of technology

It effectively avoids warp breakage after perforation, maintains the structural integrity and mechanical properties of ligaments, improves the fit and biocompatibility with in vivo tissues, adapts to laser processing technology, reduces the impact of thermal effects, and ensures long-term stability and fatigue resistance.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention belongs to the field of medical materials technology and relates to an artificial ligament with a cylindrical rod structure. The cylindrical rod structure forms a first bone tunnel braid, an intra-articular free yarn section, and a second bone tunnel braid section connected sequentially along the axial direction. The cylindrical rod structure includes warp and weft yarns. The warp yarns extend along the axial direction of the cylindrical rod structure, and the weft yarns extend along the circumferential direction. Both the first and second bone tunnel braid sections contain both warp and weft yarns, while the intra-articular free yarn section contains only warp yarns. The first and second bone tunnel braid sections have through channels perpendicular to the axial direction. There are two types of warp yarns: suture thread and multifilament. The channels are formed by through-holes created by the breakage of multifilament yarns. The artificial ligament of this invention combines mechanical uniformity, flexibility, and biocompatibility, is easy to process, and provides fatigue resistance and joint stability under physiological loads.
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