Zinc alloy endoscopic stapler cartridge and preparation method thereof

Abstract

The invention discloses a zinc alloy endoscopic stapler cartridge and a preparation method thereof. The zinc alloy endoscopic stapler cartridge comprises a zinc alloy endoscopic stapler cartridge basebody and a composite film layer, wherein the surface of the zinc alloy endoscopic stapler cartridge base body is subjected to sand blasting treatment to form a frosted layer, the frosted layer is subjected to electrostatic spinning treatment, and the outer layer of the frosted layer is evenly covered with an electrostatic spinning film; and the frosted layer and the electrostatic spinning film form the composite film layer together. The zinc alloy endoscopic stapler cartridge base body and the composite film layer covering the surface of the zinc alloy endoscopic stapler cartridge base body are both made of biodegradable materials, so that the zinc alloy endoscopic stapler cartridge base body has excellent biocompatibility and safety, and the problem and the negative effect that a titanium alloy endoscopic stapler cartridge remains for a long time can be solved. Besides, zinc alloys are excellent in corrosion resistance in the human body environment, and the problem that the degradation rate of the magnesium endoscopic stapler cartridge is too high is solved.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a zinc alloy staple and a preparation method thereof. Background technique [0002] Staples are important components of staplers used for tissue or organ suturing in clinical anastomosis operations, and have various models. At present, the most commonly used staples for staplers are made of titanium alloy wire, which has stable chemical properties and excellent mechanical properties. Therefore, it is not degradable after surgery and remains permanently in the human body, which will have certain impact on the postoperative life of patients. Influence, for example, titanium staples after gastrointestinal suture surgery, there is a risk of falling off and scratching the gastrointestinal tract or causing local rupture due to long-term friction, and it is easy to cause inflammation and bacterial infection. [0003] Therefore, some researchers have proposed to use degradable s...

AI Technical Summary

Problems solved by technology

Magnesium, as an essential constant element for the human body, has good biocompatibility, and magnesium alloys can be degraded in the human environment without adverse effects caused by long-term retention, but magnesium alloys have the problem of excessively fast degradation, especially in the gastrointestinal tract. Digestive juice will accelerate the degradation of magnesium alloys in the environment of the intestinal tract

[0004] Chinese patent "ZL201020202038.4" provides medical staples that can prevent and treat wound infection, which solves the problem of inflammation or infection caused by the retention of titanium staples, but still does not use degradable materials, and remains in the body for a long time after surgery

[0005] The Chinese patent "CN201910213726.6" provides a biodegradable staple material that can be degraded and absorbed in the human body, which solves the problem of long-term retention. The impact is not yet clear, and it does not provide effective measures to improve corrosion resistance, and there is a risk of premature degradation and failure in the gastrointestinal environment

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