Biodegradable pure iron anastomosis nail containing silver coating and preparation thereof

Abstract

The invention provides a biodegradable pure iron anastomosis nail containing a silver coating. The material components and proportions of the pure iron anastomosis nail comprise 99.98% to 99.99% of pure iron, 0.004% to 0.008% of Zn, 0.003% to 0.006% of Ca, and 0.003% to 0.006% of Mn. The pure iron anastomosis nail comprises an anastomosis nail rod body which hunches up from the middle portion, two ends of the anastomosis nail rod body transfer to form vertical nail bodies through fillets, and a nail point is arranged at the front end of each nail body. Due to the facts that the rod body hunches up from the middle portion, the front ends are provided with the nail points, and the vertical nail bodies transfer through the fillets, the anastomosis nail is suitable for an anastomat which is used for anastomosis of human tissue and organs, the nail bodies of the anastomosis nail are pressed to the middle through a pressing rod of the anastomat in the process of anastomosis, the human tissue and organs are sutured together, the function of anti-inflammatory and sterilization to anastomosis wound surface of the human tissue and organs is achieved through a layer of cupric ion coating which is evenly coated on the surface of the pure iron anastomosis nail, the human tissue and organs utilizing the pure iron anastomosis nail for the anastomosis are free from infection, the anastomosis nail is absorbed and degraded with union of the wound, and the anastomosis nail is beneficial for shortening of time of union and recovery of the wound surface.

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 silver-containing coated pure iron staple and a preparation thereof. 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 ...

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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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