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Woven film, woven bag and weaving method

A technology of woven bags and degradable materials, which is applied in tissue regeneration, non-woven fabrics, textiles and papermaking, etc., can solve the problems of elastic modulus difference, narrow treatment range, large trauma, etc., and achieve good biocompatibility and safety , good biocompatibility, the effect of avoiding stress disorder

Pending Publication Date: 2020-10-23
GUANGZHOU SUN SHING BIOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Fractures caused by car accidents and osteoporosis are very common. In the treatment of fractures, traditional surgery generally involves implanting steel nails and plates as supports, which require surgery and implantation. The trauma is large and the risk is high. The difference in elastic modulus between the resulting "stress shielding" phenomenon is a very big problem
Minimally invasive surgery has been greatly welcomed in recent years because of the small surgical trauma. The application in fracture treatment is to fold the woven bag and transport it to the affected area. The existing technology is made of PET material, but the problem is that the treatment The scope is narrow, the clinical long-term effect cannot be determined, and the risk is high

Method used

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  • Woven film, woven bag and weaving method
  • Woven film, woven bag and weaving method
  • Woven film, woven bag and weaving method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The woven film is divided into three layers. The degradable material of the middle layer can choose one of PLGA or PLLA or a combination of both. Its weight ratio is 40%-70%, and the degradation time is 3-6 months. The degradable material can choose one of PLGA or PLLA or a combination of both, and its weight ratio is 40%-60%, and the degradation time is 6-12 months. The non-degradable materials of the core layer, the middle layer, and the outer layer can be Choose PET or PBT or a combination thereof.

[0034] attached figure 1 It is a schematic diagram of the braided membrane of Example 1.

[0035] Experimental group:

[0036] Control group: PET woven film;

[0037] Experimental group 1: core layer-PET woven film; middle layer-40% PLLA+60% PET blended woven film; outer layer 50% PLGA+50% PET blended woven film;

[0038] Experimental group 2: core layer-PET woven film; middle layer-60% PLGA+40% PET blended woven film; outer layer 50% PLLA+50% PET blended woven film;...

Embodiment 2

[0046] A woven film is characterized in that it has three layers, the core layer is made of PET material, the middle layer is made of mixed weaving of 60% PLLA and 40% PET material by weight, and the outer layer is made of 50% PLGA and 50% by weight Made of PET material blend weave.

[0047] The effect data is consistent with the data of experimental group 2 in Example 1.

Embodiment 3

[0049] The woven bag uses the woven film of Example 2, and the woven film is made into a cylindrical woven film with two ends opened by 3D electrospinning technology. It contains two ports: the first port and the second port. The first port seals and fixes the opening at one end of the braided membrane, and the second port seals and fixes the opening at the other end of the braided membrane while having a loosening effect.

[0050] The 3D classic spinning technology can realize the membrane into a three-dimensional cylindrical structure. The two ends of the cylinder are tightened and fixed and sealed by two ports to ensure that there will be no leakage when filling the bone cement. The second port In addition to the sealing function, it is also a channel for the woven bag to communicate with the outside, and its loosening effect can make it easier to break away from the device for conveying the woven bag.

[0051] Certainly, the woven bag of embodiment 3 has preferred shape an...

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Abstract

The invention provides a woven film, a woven bag and a preparation method, aiming at solving the problems that an internal fracture fixator only plays a role in fixing and cannot provide space for bone tissue growth in time so as to achieve the aims of guiding and efficiently promoting fracture healing. The woven film is characterized in that the woven film comprises a core layer, a middle layer and an outer layer, wherein the core layer is made of a non-degradable high polymer material, and the middle layer and the outer layer are formed by mixing and weaving a degradable material and the non-degradable high polymer material; the degradation time of the degradable material used by the middle layer is greater than or equal to the degradation time of the degradable material used by the outer layer; and the woven bag adopts a cylindrical woven film with openings at two ends and comprises a first port and a second port, wherein the first port seals and fixes the opening at one end of thewoven film, and the second port seals and fixes the opening at the other end of the woven film and has a loosening effect.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a woven film, a woven bag and a weaving method. Background technique [0002] Fractures caused by car accidents and osteoporosis are very common. In the treatment of fractures, traditional surgery generally involves implanting steel nails and plates as supports, which require surgery and implantation. The trauma is large and the risk is high. There is a difference in elastic modulus between them, and the resulting "stress shielding" phenomenon is a very big problem. Minimally invasive surgery has been greatly welcomed in recent years because of the small surgical trauma. The application in fracture treatment is to fold the woven bag and transport it to the affected area. The existing technology is made of PET material, but the problem is that the treatment The scope is narrow, the clinical long-term effect cannot be determined, and the risk is high. [0003] In view of ...

Claims

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Application Information

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IPC IPC(8): A61L27/56A61L27/58A61L27/50A61L27/40D04H1/728D04H1/76
CPCA61L27/56A61L27/58A61L27/50A61L27/18D04H1/728D04H1/76A61L2430/02C08L67/04C08L67/02
Inventor 杨习锋陈诗浩曾晨光周启明丁雪玲
Owner GUANGZHOU SUN SHING BIOTECH CO LTD
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