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Absorbable magnesium alloy skin suture nail and preparing method thereof

A magnesium alloy and suture nail technology, applied in the field of medical devices, can solve the problems of micro-cracks, fast degradation rate, poor formability of magnesium at room temperature, etc., and achieve the effects of low cost, realization of degradation and absorption, and reduction of stress concentration

Inactive Publication Date: 2018-02-27
TIANJIN UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

Magnesium, as one of the essential elements of the human body, participates in various metabolisms in the human body and can be well absorbed by the human body. However, its degradation rate is fast in the human environment rich in chloride ions, and the room temperature formability of magnesium is poor. Easy to produce micro-cracks in the over-bent nail body and staple legs

Method used

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  • Absorbable magnesium alloy skin suture nail and preparing method thereof

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Embodiment

[0022] An absorbable magnesium alloy skin suture nail, as shown in the attached figure, has a U-shaped structure and is mainly composed of three parts: the nail body 1, the nail shoulder 2, and the nail leg 3 with the nail tip. It adopts biocompatibility Good Absorbable Magnesium Alloy Wire Preparation. The cross-section of the magnesium alloy wire is circular or rectangular, the diameter of the circular cross-section is 0.8 mm, the length of the rectangular cross-section is 0.8 mm, and the width is 0.8 mm. The length of the staple body 1 is 5.2 mm, the length of the nail shoulder 2 is 2.4 mm, the length of the nail leg 3 is 4.0 mm, the angle 4 between the nail body and the nail shoulder is 60°, and the transition fillet radius R 1 is 1.0mm, the angle 5 between the nail shoulder and the nail leg is 140°, and the transition fillet radius R 2 is 1.5mm, and the nail leg is provided with a pointed foot with an inclination angle 6 of 35°.

[0023] The magnesium alloy is that two ...

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Abstract

The invention provides an absorbable magnesium alloy skin suture nail and a preparing method thereof. The appearance of the skin suture nail is similar to a U shape, and the skin suture nail is prepared through smelting, casting, extrusion, wiredrawing, brake forming, heat treatment, acid pickling, surface fluoridation treatment and washing. The absorbable magnesium alloy skin suture nail and thepreparing method thereof have the advantages that the magnesium alloy skin suture nail has good biocompatibility and biodegradablity, high mechanical strength and good ductility and toughness, a transitional design of a nail shoulder can effectively reduce stress concentration caused by large deformation when the magnesium alloy skin suture nail is closed, and meanwhile effective adjustment of thedegrading efficiency can be achieved through the surface fluoridation treatment; the magnesium alloy skin suture nail has clamping performance and ductility and toughness, the service life of the absorbable magnesium alloy skin suture nail is prolonged, and thus the skin suture nail can meet the requirement of clinic use, automatically shed when used for epidermis suture and achieve complete degrading and absorption when used for subcutaneous suture.

Description

technical field [0001] The invention belongs to the field of medical devices, and in particular relates to a U-shaped absorbable magnesium alloy skin suture nail and a preparation method thereof. Background technique [0002] Skin suturing is one of the common surgical operations. The traditional skin suturing method is to use sutures to suture the wound, but this requires a high level of skill for the operator, and the operation is cumbersome and complicated. As a medical device that can replace traditional sutures, skin suture staples have good application prospects because of their relatively simple operation and low technical requirements for surgical operators. Its working principle is similar to that of a stapler. During the operation, staples are driven into the tissue by a stapler-like stapler, thereby achieving the closure of the skin. [0003] At present, the skin suture staples in clinical use are mainly divided into two types: non-absorbable and absorbable skin ...

Claims

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Application Information

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IPC IPC(8): A61B17/064A61L17/06
Inventor 刘德宝郑茂波宁保群陈民芳
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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