Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Hollow porous absorbable suture line and preparation method

A technology of porous parts and sutures, applied in textiles and papermaking, trocars, knitted fabrics, etc., can solve the problems of increasing the complexity of the preparation process, requiring further verification, damage to the tubular sutures, etc., and is conducive to tissue ingrowth. With the effect of regeneration, reducing cutting, accelerating repair and healing

Inactive Publication Date: 2019-05-21
DONGHUA UNIV
View PDF17 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing products and patents on new sutures include: ① Orthocord sutures developed by Depuy Company and the sutures reported in patents with authorization numbers US20050149118A1 and US008940018B2 are high-strength partially absorbable sutures, although the non-absorbable components are effectively reduced , but it is still a traditional circular compact structure, which is not conducive to tissue ingrowth; ②FiberTape suture developed by Arthrex Company, this suture is similar to shoelace in shape, and is in the shape of a flat belt. The cross section is different from the traditional circular shape. - The tissue interface can better disperse the force, reduce stress concentration, and reduce tissue cutting. However, this suture is also of a tight structure, and its long-term use effect needs to be further verified; ③ Publication numbers are US2018 / 0000480A1, CN107405145A The patent reported the mesh suture and its application. The suture is composed of tubular suture and anti-twisting rope elements. However, the preparation of tubular sutures and then the introduction of anti-twisting rope elements increases the complexity of the preparation process. The introduction of anti-twisting rope possible damage to the tubular suture during the procedure

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Hollow porous absorbable suture line and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as figure 1 As shown, this embodiment provides a hollow porous partially absorbable suture, the preparation method of which includes: weaving non-absorbable yarn 1 and absorbable shaft yarn 2 through two-dimensional and triaxial weaving process outside the inner liner tube 3 The surface is preformed to obtain a surface porous suture, and the obtained surface porous suture is heat-treated together with the inner liner 3, so that the part of the absorbable shaft yarn 2 is melted, and the weaving points of the non-absorbable woven yarn 1 are bonded, and then removed Liner tube 3, resulting in a hollow porous part absorbable suture.

[0027] The specific preparation steps of the hollow porous absorbable orthopedic suture are as follows:

[0028] Step 1): Select FDA-approved polypropylene monofilament ( Ethicon) is a non-absorbable braided yarn material with a diameter of 0.15mm; select polydioxanone monofilament (prepared by melt spinning) as the core yarn material ...

Embodiment 2

[0034] Such as figure 1 As shown, this embodiment provides a hollow porous partially absorbable suture, the preparation method of which includes: weaving non-absorbable yarn 1 and absorbable shaft yarn 2 through two-dimensional and triaxial weaving process outside the inner liner tube 3 The surface is preformed to obtain a surface porous suture, and the obtained surface porous suture is heat-treated together with the inner liner 3, so that the part of the absorbable shaft yarn 2 is melted, and the weaving points of the non-absorbable woven yarn 1 are bonded, and then removed Liner tube 3, resulting in a hollow porous part absorbable suture.

[0035]The specific preparation steps of the hollow porous absorbable orthopedic suture are as follows:

[0036] Step 1): Select FDA-approved polypropylene monofilament ( Ethicon) is a non-absorbable braided yarn material with a diameter of 0.15mm; select polydioxanone monofilament (prepared by melt spinning) as the core yarn material o...

Embodiment 3

[0042] Such as figure 1 As shown, this embodiment provides a hollow porous partially absorbable suture, the preparation method of which includes: weaving non-absorbable yarn 1 and absorbable shaft yarn 2 through two-dimensional and triaxial weaving process outside the inner liner tube 3 The surface is preformed to obtain a surface porous suture, and the obtained surface porous suture is heat-treated together with the inner liner 3, so that the part of the absorbable shaft yarn 2 is melted, and the weaving points of the non-absorbable woven yarn 1 are bonded, and then removed Liner tube 3, resulting in a hollow porous part absorbable suture.

[0043] The specific preparation steps of the hollow porous absorbable orthopedic suture are as follows:

[0044] Step 1): Select FDA-approved polypropylene monofilament ( Ethicon) is a non-absorbable woven yarn material with a diameter of 0.15 mm; poly(4-hydroxybutyrate) monofilament ( Tepha) is the core yarn material of the absorbab...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

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...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/06D04C1/02D04C1/12
CPCA61B17/06D04C1/02D04C1/12
Inventor 王璐张倩林婧王富军高晶关国平刘晓凤
Owner DONGHUA UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com