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A high-strength degradable magnesium alloy suture and its preparation method

A magnesium alloy and suture technology, applied in the field of suture, can solve the problems of unable to obtain the expected suture effect, too fast degradation speed, easy to be corroded and degraded, etc., and achieve a suitable composition ratio, excellent antibacterial performance and high practicability. Effect

Active Publication Date: 2021-10-22
江苏丰范嘉致新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, due to the relatively active metal properties of magnesium alloys, they are easily corroded and degraded in the internal environment, resulting in too fast degradation and the expected suture effect cannot be obtained, which brings inconvenience to practical applications.

Method used

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  • A high-strength degradable magnesium alloy suture and its preparation method

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Effect test

Embodiment 1

[0038] A preparation method of a high-strength degradable magnesium alloy suture, comprising the following steps:

[0039] (1) Preparation of magnesium alloy core material: take zinc ingot, lithium ingot and magnesium ingot, heat up melting, casting, extrusion drawing, annealing, ultrasonic cleaning with deionized water, and obtain magnesium alloy core material;

[0040] (2) Take the magnesium alloy core material, sand it, wash it with deionized water for 10 minutes, then place it in sodium hydroxide solution, treat it in a water bath at 60°C for 10 minutes, wash it with deionized water for 10 minutes, and place it in a phosphoric acid solution to activate it for 10 minutes , washed with water to obtain the pretreated matrix;

[0041] (3) Take ammonium metavanadate, sodium dodecylbenzenesulfonate, adenosine triphosphate disodium salt, molybdate and accelerator, heat up to 110°C, stir and react under microwave conditions for 15min, cool down to 25°C, add sodium hydroxide Adjust ...

Embodiment 2

[0047] A preparation method of a high-strength degradable magnesium alloy suture, comprising the following steps:

[0048] (1) Preparation of magnesium alloy core material: take zinc ingot, lithium ingot and magnesium ingot, heat up melting, casting, extrusion drawing, annealing, ultrasonic cleaning with deionized water, and obtain magnesium alloy core material;

[0049] (2) Take the magnesium alloy core material, grind it with sandpaper, wash it with deionized water for 15 minutes, then place it in a sodium hydroxide solution, treat it in a water bath at 62°C for 13 minutes, wash it with deionized water for 12 minutes, and place it in a phosphoric acid solution to activate it for 15 minutes , washed with water to obtain the pretreated matrix;

[0050] (3) Take ammonium metavanadate, sodium dodecylbenzenesulfonate, adenosine triphosphate disodium salt, molybdate and accelerator, heat up to 112°C, stir and react under microwave conditions for 12min, cool down to 28°C, add sodiu...

Embodiment 3

[0056] A preparation method of a high-strength degradable magnesium alloy suture, comprising the following steps:

[0057] (1) Preparation of magnesium alloy core material: take zinc ingot, lithium ingot and magnesium ingot, heat up melting, casting, extrusion drawing, annealing, ultrasonic cleaning with deionized water, and obtain magnesium alloy core material;

[0058] (2) Take the magnesium alloy core material, polish it with sandpaper, wash it with deionized water for 20 minutes, then place it in sodium hydroxide solution, treat it in a water bath at 65°C for 10 minutes, wash it with deionized water for 15 minutes, and place it in a phosphoric acid solution to activate it for 20 minutes , washed with water to obtain the pretreated matrix;

[0059] (3) Take ammonium metavanadate, sodium dodecylbenzenesulfonate, adenosine triphosphate disodium salt, molybdate and accelerator, heat up to 115°C, stir and react under microwave conditions for 10min, cool down to 30°C, add sodium...

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Abstract

The invention discloses a high-strength degradable magnesium alloy suture and a preparation method thereof. Since the chemical properties of the magnesium alloy are relatively active and the chemical stability is poor, when used as a suture, the surface is prone to corrosion and degradation, resulting in Suture thread can not play expected effect, therefore for this problem, this application gets magnesium alloy suture thread earlier, carries out the preparation of phosphate, vanadate composite conversion coating (the first coating) on ​​its surface, during preparation magnesium alloy suture thread Placed in ammonium metavanadate, sodium dodecylbenzenesulfonate, adenosine triphosphate disodium salt, molybdate, accelerator, the addition of ammonium metavanadate can improve the corrosion resistance of the conversion coating, thereby improving the magnesium alloy suture Corrosion resistance; the process design of this application is reasonable, the component distribution ratio is appropriate, and the prepared magnesium alloy suture can be gradually degraded and absorbed when implanted in the human body, and the corrosion resistance and antibacterial performance are better during the use of the suture. Excellent, with high practicality.

Description

technical field [0001] The invention relates to the technical field of sutures, in particular to a high-strength degradable magnesium alloy suture and a preparation method thereof. Background technique [0002] Medical suture refers to the special medical thread used for ligation and hemostasis, suture hemostasis and tissue suture in surgical operations. It is divided into two types: absorbable suture and non-absorbable suture; non-absorbable suture is the suture that cannot be absorbed by tissue , so sutures need to be removed after suturing, which have different degrees of tissue reaction, and the sutured epidermis is easy to leave scars; due to the above defects of non-absorbable sutures, absorbable sutures have gradually entered our field of vision. [0003] Magnesium alloy is a commonly used medical metal. It can be used to make magnesium alloy sutures to ligate wounds and suture hemostasis. It has higher rigidity and better processing performance, so it is more suitabl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C22/40A61L17/14
CPCA61L17/145C23C22/40
Inventor 陈吉文赵枢明吕洪波冉兆晋傅立峰
Owner 江苏丰范嘉致新材料有限公司
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