Biodegradable copper-containing coating pure magnesium anastomosis nail and preparation method thereof

Abstract

The invention provides a biodegradable copper-containing coating pure magnesium anastomosis nail and preparation method thereof. The pure magnesium anastomosis nail comprises the following material components in percentage by weight: 99.98-99.99 percent of pure magnesium, 0.002-0.004 percent of Zn, 0.003-0.06 percent of Ca, 0.002-0.004 percent of Fe and 0.003-0.006 percent of Mn. The biodegradable copper-containing coating pure magnesium anastomosis nail comprises an n-shaped pure magnesium anastomosis nail, wherein the nail body of the n-shaped pure magnesium anastomosis nail and a nail tip connecting part form a section of nail shoulder part with an angle of 20-40 degrees; and a copper ion coating is uniformly coated on the surface. The n-shaped pure magnesium anastomosis nail is formed by employing an extrusion processing mode and is suitable for human tissue and organ anastomosis; and because the nail body of the n-shaped pure magnesium anastomosis nail and the nail tip connecting part form the section of nail shoulder part with the angle of 20-40 degrees, when the anastomosis nail is used for anastomosis, the nail tip is pressed to the middle through the nail shoulder part with the angle of 20-40 degrees on the anastomosis nail, the meshed human tissues and organs are sewed together, the anastomosis nail is absorbed by the human body along with wound concrescence, and the wound surface concrescence and rehabilitation time is shortened.

Description

technical field [0001] The invention belongs to the technical field of medical instruments, and relates to a staple for medical anastomosis instruments, in particular to a biodegradable copper-containing coated pure magnesium staple and its preparation. Background technique [0002] With the development of medical science and technology, doctors have changed the way of suturing human tissues or organs from the original manual suturing with needles and threads to the way of suturing with medical staplers and alloy staples. The use of medical staplers for suturing is easy to operate, safe and causes little trauma, and has been accepted by the majority of surgical clinicians. However, most of the staples used in existing medical staplers are made of titanium alloy. Due to the relatively high corrosion resistance of titanium alloy, titanium alloy staples will remain in human tissues or organs for a long time after suturing, which may cause inflammation. It always gives people a...

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Problems solved by technology

[0003] However, due to the magnesium alloy composition in the staples of degradable and absorbable magnesium alloy materials, there are also some corresponding adverse effects. Factors, it is easy to cause wound infection to form secondary trauma, causing some obstacles to clinical verification and putting into use

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