Precious metal elements with excellent physical and chemical properties (such as high temperature oxidation resistance and corrosion resistance, electrical properties, excellent electrical conductivity, high temperature thermoelectric performance and stable temperature coefficient of resistance, etc.), high catalytic activity, strong coordination ability and so on, USES in industry, the application of "small, small, fine, broad", the characteristics of modern so called "industrial vitamin". Precious metals are closely related to the development of modern high-tech.
Significant results have been achieved using precious metals, especially microprobes made from platinum and its alloys, to explore the nervous system and repair damaged areas. For example, nerve repair devices such as visual nerve, horizontal diaphragm nerve ear vortex nerve stimulation devices, spinal cord stimulation devices, children's spine bending plastic devices. Heart patients also use precious metals to make cardiac pacemakers. In addition to being compatible and non-toxic, the implantation of these devices requires good corrosion resistance, electrical conductivity and creep resistance. Commonly used Pt, pt-ir, Au, Au - Pt, Ag - Pd and other metal or alloy materials. Precious metal isotopes and compounds can be used in the diagnosis and treatment of liver, lung, kidney, breast, brain and other diseases and tumors.
Gold - containing drugs are mainly used for rheumatoid arthritis treatment, 27 drugs have been sold in foreign markets. In recent years, the application of silver drugs in the treatment of burns, dental caries, breast cancer diagnosis, HIV transmission inhibition, laser surgery and other aspects has made great progress.
In the United States, the United Kingdom and other countries, as early as 1979 began to use platinum drugs to treat tumors. Cisplatin is effective in the treatment of bladder cancer, testicular cancer, ovarian cancer and head and neck cancer. It has recently become an indispensable drug in the treatment of lung cancer and esophageal cancer. After cisplatin, a promising second generation of anticancer platinum drugs is being developed, in which the efficacy of carboplatin is the same as cisplatin and the toxicity is small, and clinical application has begun.
