Biomedical materials, also known as biomaterials, are materials with special properties that are used for artificial organs, surgical repair, physical therapy rehabilitation, diagnosis and treatment of diseases, and to enhance or restore human tissue functions without adversely affecting the human body. With the increase of the aging society and the sharp increase of accidental injuries, the number of people who suffer from trauma is about tens of millions worldwide each year, and about 3 million in mainland China. A considerable number of bone trauma patients require early treatment or late treatment to varying degrees. Repair, bone tissue repair materials have a huge market demand. According to statistics from the Ministry of Science and Technology, my country's biomaterials and products have maintained a relatively high growth rate for more than ten years, but my country's biomaterials and products account for a relatively small market share in the world and have huge room for development.
Medical metal materials currently used in clinical practice mainly include stainless steel, cobalt alloys and iron alloys. Titanium and titanium alloys have an elastic modulus that basically matches the hard tissue of the human body, have good corrosion resistance and high fatigue resistance. The advantages of non-toxicity have received widespread attention. Today, titanium alloy artificial joints, dental implants, endovascular stents, heart valves and other medical device products have come out, which is of great significance to the development of medicine.
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