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Soft tissue repair stent and preparation method thereof

A soft tissue and tissue technology, used in medical science, ligaments, prostheses, etc., can solve the problems of different deformation rates between the inside and the edge of the patch, easy formation of scar plates and inflammatory reactions, low suture strength, and low tensile strength. Achieve the effect of avoiding the formation of scar plate and inflammatory reaction, ensuring cleanliness and safety, and strong anti-infection ability

Pending Publication Date: 2022-05-10
STAR SPORTS MEDICINE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the high deformation rate of existing repair products, for example, under the pre-tension force of 10-20N, the deformation rate of ordinary hernia mesh is between 20-70%, and the mesh creep is prone to occur, resulting in operation failure
In addition, the suture strength and tensile strength of the existing patch are low, and the thickness is insufficient, so it is often necessary to stack multiple layers for use
This will easily lead to recurrent tearing due to patch breakage, difficulty in growing human tissue, easy formation of scar plates and inflammatory reactions, and multi-layer patches need to be sutured and connected by doctors on site to deform the inside and edges of the patch Different rates, prone to persistent pain and other complications

Method used

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  • Soft tissue repair stent and preparation method thereof
  • Soft tissue repair stent and preparation method thereof
  • Soft tissue repair stent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] In this embodiment, polyethylene terephthalate single-strand fiber material is used, and each strand of fiber contains 3 filaments, and the diameter of the filaments is 0.08 mm. Warp and weave the above-mentioned fiber materials. The weaving step is carried out on the warp knitting machine. The fibers enter the loop forming system according to a certain amount of warp let-off. According to the yarn laying number, the yarn guide needle moves regularly to form a mesh structure. fabric. Specifically, three combs are used, two symmetrical warp flat weaves form a mesh structure, and one weft insert reinforces the mesh. The numbers of the lapping yarns of the three combs are: GB1:21 / 23 / 10 / 12 / 10 / 23 / 21 / 23 / / , GB2: 12 / 10 / 23 / 21 / 23 / 10 / 12 / 10 / / , GB3: 00 / 00 / 33 / 33 / 00 / 00 / 33 / 33 / / ; In the process parameters of the upper machine, the transverse density is 35 rows / 5cm, and the longitudinal density is 30 rows / 5cm.

[0045] The obtained medical fiber net-like braid is shaped at 140°C, and...

Embodiment 2-12

[0047] The difference between Examples 2-12 and Example 1 lies in that the number of filaments contained in each fiber is different, and the diameters of the filaments are different. See Table 1 for details.

Embodiment 13-16

[0049] The difference between Examples 13-16 and Example 2 lies in that the lateral density is different among the machine process parameters. See Table 1 for details.

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PUM

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Abstract

The invention relates to the technical field of medical materials, and particularly discloses a soft tissue repair stent and a preparation method thereof. The soft tissue repair stent is formed by weaving medical fibers and is of a net structure, the porosity is 12%-50%, the weight per unit area is 100 g / m < 2 >-300 g / m < 2 >, the thickness is 0.5-3 mm, and the deformation rate under the tensile strength of 16 N / cm is smaller than or equal to 20%. The soft tissue repair stent provided by the invention is small in deformation rate, excellent in mechanical property, moderate in thickness, not easy to creep and tear in the use process, and appropriate in stiffness, better conforms to the structural characteristics of joint soft tissues, and can be widely applied to repair of joint soft tissues such as rotator cuff, patella, achilles tendon, biceps tendon or quadriceps tendon and the like.

Description

technical field [0001] The invention relates to the technical field of medical materials, in particular to a soft tissue repair bracket and a preparation method thereof. Background technique [0002] Soft tissue injury caused by surgery, trauma, disease and other reasons has become one of the common clinical diseases and seriously threatens human health. Traditional methods for treating soft tissue injuries or defects include autologous transplantation and allogeneic transplantation, but these methods have problems such as limited donors, greater secondary damage to patients, and immune rejection. In recent years, it has become a hot spot to repair and replace damaged soft tissue by using tissue engineering technology and artificially prepared repair products. [0003] With the popularization of national fitness exercise, the amount of avulsion injuries of joint soft tissues such as tendons, ligaments, and joint capsules caused by exercise is increasing year by year. Once ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/08A61F2/30
CPCA61F2/08A61F2/30A61F2/30942A61F2002/0894A61F2240/001A61F2002/30772A61F2002/3093
Inventor 董文兴刘泽超
Owner STAR SPORTS MEDICINE CO LTD
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