Compound anti-adhesion herniorrhaphy tablet and manufacturing method thereof

Abstract

The invention relates to a compound anti-adhesion herniorrhaphy tablet and a preparation method thereof, clinically belonging to the field of abdominal wall defect herniorrhaphy implant medical apparatuses and manufacturing methods thereof. The compound anti-adhesion herniorrhaphy tablet comprises a polypropylene patch and a puffed polytetrafluoroethylene anti-adhesion patch, wherein the puffed polytetrafluoroethylene anti-adhesion patch is compounded on the polypropylene patch. The manufacturing method of the compound anti-adhesion herniorrhaphy tablet is characterized by comprising the following steps of: (1) hot-pressing and fusing a polypropylene reticulated weaving matter and a puffed polytetrafluoroethylene anti-adhesion membrane into a whole through a fuse machine so as to prepare a compound comprising the polypropylene patch and the puffed polytetrafluoroethylene anti-adhesion patch; and (2) cutting the compound which is hot-pressed and fused into a whole and comprises the polypropylene patch and the puffed polytetrafluoroethylene anti-adhesion patch into the anti-adhesion herniorrhaphy tablet in a preset shape through ultrasonic waves by adopting a cutter in the preset shape. The preset shape of the compound anti-adhesion herniorrhaphy tablet is a circular shape, an elliptical shape, a rectangular shape or an irregular shape.

Description

technical field [0001] The invention relates to a composite anti-adhesion hernia repair sheet and a manufacturing method thereof, which clinically belong to the hernia repairing implant medical device for abdominal wall defect and a manufacturing method thereof. Background technique [0002] A hernia is a rupture or weakening of the abdominal wall supporting the organs, which makes the abdominal organs protrude to the body surface through the rupture or weakening part, forming a local mass. The current method of repairing hernia clinically is to open an opening at the site where the hernia occurs, push the organs squeezed into the site back into the abdominal cavity, and then insert a biocompatible material: a mesh made of polypropylene. A braided repair instrument (polypropylene patch) is placed in the opening and held in place by suturing or otherwise, and the opening is then closed. The advantage of this method is that if done properly, the tissue near the opening underg...

AI Technical Summary

Problems solved by technology

[0005] However, there are still some problems in the application of polypropylene mesh: first, when it is used for the repair of full-thickness abdominal wall defects, the mesh should be isolated from visceral tissue, and if it directly contacts with internal organs, it may cause serious abdominal adhesions. Gastrointestinal obstruction, which may even erode the intestinal wall, causing intestinal fistula, causing pain to the patient and even requiring a second operation

[0007] Expanded Polytetrafluoroethylene anti-adhesion patch (Expanded Polytetrafluoroethylenepatch, e-PTFE): This expanded polytetrafluoroethylene anti-adhesion patch is softer than polypropylene patch, and it is not easy to form adhesions when in contact with abdominal organs, causing inflammation. It is also the lightest; but expanded polytetrafluoroethylene has no supporting force, and the damaged part of the abdominal wall is more likely to relapse

Expanded PTFE anti-adhesion patch allows bacteria to pass through, but phagocytic cells cannot pass through, and tissue cannot grow in, so it cannot tolerate infection and pollution, and cannot be used for contaminated wounds. Once the patch is infected, the patch must be removed, otherwise the wound will hard to heal

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