Analysis of performance advantages of medical titanium alloy materials and practical application in the industry

Titanium medical equipment is the third generation surgical instrument after carbon steel and stainless steel. In order to improve the anti-rust performance of stainless steel equipment, it is often subjected to surface treatment such as chrome plating and electric polishing. However, chromium is toxic, and the detached chromium layer will affect the human body to some extent.

The benefits of titanium as a medical device are:

1. Lightweight instruments, which can reduce damage to blood vessels, muscles and organs during surgery, reduce doctor's fatigue, titanium instruments are more suitable for fine microsurgery;

2. Good corrosion resistance and non-toxic, the equipment does not rust, the wound is not easy to be infected, and the wound heals quickly;

3. Moderate elasticity of titanium, suitable for making medical pliers, tweezers, micro-scalpels, and other instruments;

4. When operating under a shadowless lamp, titanium has weaker reflective properties and is more suitable than stainless steel.

Titanium medical devices mainly include scalpels, surgical forceps, surgical tweezers, thoracic amplifiers, suture needles, sutures, etc. Titanium wire is used as a surgical suture. Compared with other materials, it has the advantages of small tissue response and good torsion resistance. After suture, the surgical wound is less prone to inflammation and the bone suture site is not easily displaced. The suture is generally made of pure titanium wire (TA2 or TA1 titanium wire) with a diameter of 0.5 ~ 0.8mm. In addition, the soft elasticity that TiNi superelastic wire can produce can promote the rapid healing of wounds.

In addition, titanium is also an important material for assisting rehabilitation equipment, such as making wheelchairs, crutches, splints, and medical instruments.

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