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Metal suture or skin nail used for incision suture after operation and preparation method thereof

A post-surgery, metal technology, applied in the field of medical devices, can solve the problems of limited printing accuracy, fineness can only reach about 100μm, broken wires, etc., and achieve good biocompatibility, conducive to healing, and high safety effects

Active Publication Date: 2022-04-01
SHANGHAI NINTH PEOPLES HOSPITAL SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Traditional metal 3D printing technologies, such as Selective Laser Melting (SLM for short) and Electron Beam Melting (EBM for short), have limited printing accuracy, and the thinnest printed sutures can only reach 100 μm left and right, and there will be broken wires and rough surfaces during the printing process, which will affect the strength of the printed sutures, while the suture diameters of 6-0# and below in clinical use are only 70 μm in diameter
Therefore, it is difficult to make surgical sutures that meet the requirements using traditional metal printing technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1. Preparation of metal tantalum powder

[0023] The tantalum powder that meets the requirements of 3D printing is prepared by the method of hydrogenation powder making, so as to ensure that sutures that meet the requirements of clinical surgical sutures are prepared through 3D printing technology.

[0024] The metal material is hydrogenated, and successively undergoes crushing and ball milling, screening (to ensure fluidity), shaping and post-dehydrogenation to obtain metal powder. The purpose of the sieving treatment is to ensure that the fluidity is 20-50g / 12Sec. The purpose of the shaping treatment is to control the particle size range between 200mu and 400mu.

[0025] 2. Preparation of tantalum metal sutures

[0026] The prepared tantalum metal powder is melted at a high temperature at 2700-3000°C, and then the molten metal liquid passes through the high-voltage electrostatic force of the FFF technology printing platform (the diameter of the metal wire coming out...

Embodiment 2

[0028] Metal tantalum powder was prepared by the same method as in Example 1.

[0029] The prepared tantalum metal powder is melted at high temperature, and then the molten metal liquid is passed through the high-voltage electrostatic force of the printing platform to deposit the tantalum material by wire drawing to obtain a tantalum metal nail with a diameter of less than 10 μm and a uniform surface. The FFF preparation method is the same as that in Example 1, except that it is different from the path designed in the computer. The path of the suture is a straight line, and the path of the nail is H-shaped.

Embodiment 3

[0031] 1. Preparation of titanium-tantalum-niobium-zirconium alloy powder

[0032] Titanium, tantalum, niobium, and zirconium alloy powders that meet the requirements of 3D printing are prepared by hydrogenation powder making, in order to prepare sutures that meet the requirements of clinical surgical sutures through 3D printing technology.

[0033] First, the titanium-tantalum-niobium-zirconium alloy material (titanium 60%, tantalum 2%, niobium 34%, zirconium 4%, the following mass percentages) is hydrogenated, and it is successively subjected to crushing and ball milling treatment, screening treatment, shaping treatment and dehydrogenation After post-processing, titanium-tantalum-niobium-zirconium alloy powder is obtained.

[0034] 2. Preparation of titanium-tantalum-niobium-zirconium alloy sutures

[0035] The prepared titanium, tantalum, niobium, and zirconium alloy powders are melted at a high temperature at a melting temperature of 2200-2600°C. Then, the molten metal li...

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Abstract

The invention discloses a metal suture or skin nail used for postoperative incision suture and a preparation method thereof. The method is to use a fuse manufacturing method to melt metal powder, and to obtain metal suture through electrostatic drawing and deposition molding. Or skin nails, the diameter of which is not greater than 10 μm, and the surface is uniform, can be used for postoperative incision suturing. The present invention utilizes the fused wire manufacturing method (FFF) to melt the metal powder and then use the means of electrostatic wire drawing to obtain a metal suture or skin nail with a diameter of 10 μm and a uniform surface. This suture or skin nail has suitable mechanical properties. As well as the biological activity of metal to promote tissue regeneration, it fully meets the requirements of clinical sutures or skin nails.

Description

technical field [0001] The invention relates to a medical device, in particular to a metal suture or skin nail used for incision suture after operation and a preparation method thereof. Background technique [0002] Surgery is an effective means for surgeons to treat various diseases. But surgery is also a treatment that causes direct trauma to the human body. By incising skin, tissues, and even bones and other important structures of the human body, the surgeon can directly remove the lesion to achieve the purpose of treating the disease. [0003] The wounds caused by surgical operations are usually closed with surgical sutures. Surgical sutures currently used clinically are mainly divided into two categories: the first category is absorbable sutures, including catgut, chemical synthetic threads and collagen sutures. The second category is non-absorbable sutures, which are sutures that cannot be absorbed by tissue. The material for these sutures consists primarily of ny...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/06A61B17/064B21C37/04B21G3/00B22F9/02C22C14/00
Inventor 郝永强郭煜王磊姜闻博谢凯
Owner SHANGHAI NINTH PEOPLES HOSPITAL SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE
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