Material selection is also very important during wire embedding. Understanding the classification of wire can effectively reduce postoperative adverse reactions

1, the metabolic time that is in body differs by wire for cent cannot absorb a line and can absorb a line

(1) Non-absorbable line: polypropylene is widely used, which is a single fiber line, indicating smooth, strong resistance to infection, light tissue reaction, good tensile strength, not easy to be enzymolysis, acid and alkali resistance.

(2) Absorbable line: polyglycolic acid has good biocompatibility and high tensile strength, and the absorbable time is generally 30-60 days. As a braided thread, it has the disadvantage of easy habitation of bacteria. Poly (lactic acid), also known as baby makeup line. Good biocompatibility, high strength, non-toxic.

Polycaprolactone is a long-acting absorbable suture line with certain rigidity and strength. Its tensile and wear resistance are comparable to those of the same specification metal lines, with low tensile strength and good biocompatibility. It basically does not cause inflammation, and its degradation products are carbon dioxide and water.

2, according to the structure and function of wire is divided into suspension line and buried line

(1) Suspension line

Trocar two-way barbed wire: sharp needle, blunt needle, semi-blunt needle. The common trocar consists of a needle body, a needle handle, a needle handle plug, and a thread sponge plug. Built-in buried wire two-way barbs point to the center of the wire, the number of wire has 1-2, double-strand wire can be immediately tied fixed.

The needle exposed line is fixed by the sponge bolt after the body is folded back, and the error cannot be corrected after the embedding line. Anchor line: unidirectional barb, proximal to the curved needle, distal to the straight needle. The curved needle sutured and fixed the proximal end of the thread to the deep temporal fascia, and the straight needle was recurved and fixed after crossing the target tissue.

(2) Buried line

It is divided into single strand smoothing line, spiral smoothing line, multi strand smoothing line (explosion line), mesh embedded line. Equipped with the corresponding specifications of buried needle. Can stimulate tissue hyperplasia, improve blood circulation, improve skin quality, fill depression, mesh line can be injected with hyaluronic acid and other fillers, making filling safer.

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