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Partially absorbed herniorrhaphy patch

A hernia repair and negative film technology, applied in the field of hernia repair sheets, can solve the problems of inability to use hernia repair materials, inability to process, and damage to surrounding tissues, etc.

Inactive Publication Date: 2012-11-14
TRANSEASY MEDICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past 60 years, polypropylene mesh has had a huge impact on the field of surgery. Countless patients have prolonged their lives because of it, and many difficult surgical problems have been solved because of its application. The most popular implant, however, polypropylene mesh has some problems in its application: the surface of the mesh is relatively rough, and when it is used for the repair of full-thickness abdominal wall defects, it adheres to internal organs; it is used for repairing large abdominal defects At the same time, the later scar contraction will cause the mesh to twist, and its irregular surface may irritate and damage the surrounding tissue, causing infection and skin sinus formation
[0007] In the prior art, there has been research on the blending modification of P34HB by using polylactic acid. In the article "Research on the Properties of Poly 3-Hydroxybutyrate 4-Hydroxybutyrate" published in "Plastic Science and Technology" Volume 39, No. 5, it is disclosed In order to modify P34HB with low 4-HB content, blend with low molecular weight PLA (M=990-18000) and high molecular weight PLA (M=20000-39000), and point out that 10 parts of P34HB should be added to 100 parts of P34HB PLA, the compatibility of the two materials is very good, the rigidity of the composite material is greatly improved, and the processing performance is improved; but the material is still brittle and cannot be processed to form a large-pore structure, and the flexibility and comfort are also poor. Not for use as an absorbable hernia repair material
In the article "Research on the Properties of Poly(3-hydroxybutyric acid and 4-hydroxybutyrate) copolymers and polylactic acid blends published in the third issue of volume 22 of "China Plastics", it is disclosed that poly(3-hydroxybutyrate) Poly(3-hydroxybutyric acid-co-4 hydroxybutyrate) is modified by blending with PLA, wherein the content of 4HB in poly(3-hydroxybutyric acid-co-4 hydroxybutyrate) is 10.0mol%, and the average molecular weight is 500,000-600,000 The molecular weight of polylactic acid is 80,000; the content of PLA in the blend is 5-60%, and the prepared blend material can improve the crystallinity of pure PHB copolymer, improve the glass transition temperature and thermal stability, and facilitate cooling Molding can replace non-degradable ordinary plastic products, but it cannot be processed to form a large-pore structure, and its plasticity, flexibility and comfort are also poor, so it cannot be used as an absorbable hernia repair material

Method used

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  • Partially absorbed herniorrhaphy patch
  • Partially absorbed herniorrhaphy patch

Examples

Experimental program
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Effect test

Embodiment 1

[0034] as attached figure 1 As shown, the hernia repair sheet described in this embodiment is composed of a mesh bottom sheet 10 and petals 20 . In this embodiment, the mesh backsheet 10 has a circular profile, is made of a mesh weave, and has a single-layer structure. Eight petals 20 are fixed on the upper surface of the mesh bottom sheet 10 , the far ends 22 of which are free and can move freely, and the proximal end 24 is fixed at the central area of ​​the mesh bottom sheet 10 . The circular periphery of the central area is schematic and does not imply that such a clear boundary actually exists, and its purpose is only to illustrate the approximate location of the central area. The distal ends 22 of the petals 20 are at a distance from the periphery 12 of the mesh backsheet 10 . According to needs, the distance between the distal end 22 of the petal 20 and the outer periphery 12 of the net-shaped bottom sheet 10 can be changed, can be smaller, can be larger, can be roughl...

Embodiment 2

[0036] as attached figure 2 As shown, the patch of this embodiment includes four integrally formed petals 20 and an integrally formed cross-shaped reinforcing rib 30 , and the four petals 20 are symmetrically arranged radially around the center of the circular mesh base 10 . The petals 20 and the reinforcing ribs 30 are connected together at the central area of ​​the mesh bottom sheet 10 and fixed by welding at the center of the mesh bottom sheet 10 . The mesh bottom sheet 10, the petals 20 and the ribs 30 are made of the same mesh porous braid. The distal ends of the reinforcing ribs 30 are fixed to the vicinity of the outer periphery of the mesh backsheet 10 by sewing only near the end points. Welding or sewing can be used for fixing. There is not much difference in effect between the two methods. When welding is used, the appearance is relatively smooth and beautiful, and it is easy to be accepted by doctors and patients, but there is a view that the structure and / or me...

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Abstract

The invention relates to a partially absorbed herniorrhaphy patch, which comprises a meshed bottom patch and a plurality of petals, wherein the meshed bottom patch is made of an absorbable material; the petals are located on the meshed bottom patch; and the absorbable material is a blend of poly(3-polyhydroxybutyrate and poly-4-polyhydroxybutyrate) and polylactic acid. According to the partially absorbed herniorrhaphy patch, through compound knitting, implantation quantity of foreign matter is reduced. The partially absorbed herniorrhaphy patch is good in tissue compliance and can be used for effectively repairing defected parts.

Description

technical field [0001] The invention relates to a medical device, more specifically, the invention relates to a hernia repair sheet for clinically repairing abdominal wall defects. Background technique [0002] Tension-free hernia repair using open or laparoscopic hernia repair material to reinforce the abdominal wall is becoming more common and has even become the standard of care in many countries. The amount of hernia repair materials is huge, which has promoted the rapid development of hernia repair materials in recent years. Before Bassini proposed to strengthen the posterior wall of the inguinal canal in 1884, some people tried to use a wooden plug to insert the inguinal canal through the skin of the scrotum to make it glued together to treat inguinal hernias. After the modern anatomical repair represented by the repair of the inguinal canal began, people further explored various artificial materials for hernia repair. There are many kinds of materials, from gold, si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L31/06A61L31/12A61F2/00
Inventor 孙杰许松玲陈凡
Owner TRANSEASY MEDICAL TECH
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