Special-shaped medical surgical suture and preparation method thereof

A surgical thread and special-shaped technology, which is applied in the field of medical devices, can solve problems such as the difference in the degradation time of barbs and thread bodies, and the different forming processes of barbs and thread bodies, and achieve the goal of no toxic side effects, guaranteed strength, and improved skin quality. Effect

Pending Publication Date: 2020-12-08
CHANGCHUN SINOBIOMATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In addition to the above methods, the patent CN107468291A discloses a barb thread for cosmetic use, in which barbs are formed around the substrate thread by hot-press injection molding, but the forming process of the barb and the thread body is different, and the degradation time of the barb and the thread body will be longer. Differences

Method used

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  • Special-shaped medical surgical suture and preparation method thereof
  • Special-shaped medical surgical suture and preparation method thereof
  • Special-shaped medical surgical suture and preparation method thereof

Examples

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preparation example Construction

[0038] The preparation method of above-mentioned medical operation line is:

[0039] Firstly, the high molecular polymer raw material is vacuum-dried to reduce the moisture content to below 300ppm, and melted and extruded through a single-screw spinning machine. The thin stream is cooled, post-stretched, heat-set, and coiled to produce surgical threads.

[0040] Use picosecond laser cutting equipment to cut the raised part of the above surgical line. While ensuring that the strength of the barb line is more than 90% of the strength of the main line, a barb structure is formed around the surgical line.

[0041] The above-mentioned cutting method is not limited to picosecond laser cutting, and all cutting methods of existing barb lines are applicable.

Embodiment 1

[0043] like Figure 1-2 A special-shaped medical surgical thread is shown, which includes a main body 1 of the surgical thread. The main body 1 of the surgical thread is provided with a plurality of integrally formed protrusions, and barbs 2 are formed by cutting the protrusions. The section of the surgical thread main body 1 has a circular structure, the cross-section of the protrusion is triangular, and the barbs 2 are evenly distributed in a spiral shape around the surgical thread main body 1; the diameter of the surgical thread main body 1 is 0.45mm ±0.02mm, the average wire diameter of the protrusion is 0.22mm×0.10mm. The barbs are in the same direction.

[0044] The surgical thread main body 1 is obtained by melt-spinning polylactic acid as a raw material.

[0045] The above-mentioned surgical thread main body 1 cuts the protrusions on the surgical thread main body 1 through a picosecond laser cutting system. The height h of the barb 2 formed by cutting is 0.22mm, the a...

Embodiment 2

[0054] like image 3 As shown, polydioxanone is used as raw material for melt spinning to obtain monofilaments with special-shaped cross-sections. The cross-section of the special-shaped monofilament is composed of circular and triangular protrusions, and the protrusions are symmetrically and evenly distributed on both sides of the circular main body. The diameter of the main body is 0.45mm±0.02mm, and the height of the protrusion is 0.22mm. The bottom arc connected with the main body wire is 0.45mm, and the top of the protrusion is arc-shaped.

[0055] The above-mentioned special-shaped cross-section monofilament cuts the protrusions around the main body through a picosecond laser cutting system. The height h of the barb formed by cutting is 0.22mm, the angle α on one side of the barb is 45°, the width b of the top of the barb along the line body direction is 0.5mm, and the angle β between the other side of the barb and the main line is 150°, The thorns are evenly and symm...

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Abstract

The invention provides a special-shaped medical surgical suture and a preparation method thereof. The special-shaped medical surgical suture comprises a surgical suture main body; the surgical suturemain body is provided with a plurality of protrusions integrally formed; and the protrusions are cut to form barbs. According to the special-shaped medical surgical suture, protrusion parts on a monofilament are cut, and the monofilament main body is not cut; the barbs and the main body suture are integrally formed, and the suture main body does not need to be laterally cut for fear of forming a barb structure to damage the suture main body; the barbs are relatively thick and strong; the angle selection range is wide, and sizes of the barbs are not affected by the angles; and the anchoring capability of the barbs is outstanding. As the surgical suture, the barb effect can be fully reflected in the using process of the suture; the barbs are not prone to fall off, so that the strength of thesuture body is guaranteed; and as a medical cosmetic suture, the special-shaped medical surgical suture has a more lasting effect while safely promoting the body tissues.

Description

technical field [0001] The invention belongs to the field of medical instruments, and in particular relates to a barbed special-shaped medical operation thread and a preparation method thereof. Background technique [0002] In the 1990s, Ruff of North Carolina in the U.S. and Sulamanidze of Russia disclosed a new type of medical barbed suture, which can be used for surgical sutures to remove wrinkles or lifts on the face, neck and chest. Facelifts that pull skin tissue, and surgery to remove wrinkles. Various medical sutures currently used for anchoring tissue have been used for two purposes, knot-free surgical sutures and cosmetic surgery. [0003] In the lifting operation in the beauty industry, barbed thread is widely used, and has obvious effects in minimally invasive sutures and body tissue lifting. Most bioabsorbable materials can stimulate the production of skin collagen, tighten the skin and improve skin texture. It can be metabolized into small molecules in human ...

Claims

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Application Information

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IPC IPC(8): A61B17/06A61L17/10A61L17/12D01F6/06D01F6/62
CPCA61B17/06166A61B2017/06176A61L17/10A61L17/12D01F6/06D01F6/625C08L67/04C08L23/12
Inventor 高战团姚丽丽崔立国马嘉丽崔毅庄秀丽孙庆炎
Owner CHANGCHUN SINOBIOMATERIALS
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