Application of Tantalum Coating in Implantable Medical Devices

Implantation of medical devices refers to: any surgical operation, all or part of the instrument into the human body or natural lumen, after the end of the surgical procedure to stay in the body for a long time, or these devices remain in the body for at least 30 days, these devices are considered to be implanted devices.
The implanted devices mainly include bone screws and bone plates and other implanted devices, artificial joints and hearts and other implanted artificial organs, artificial skin and other contact artificial organs, corneal stents, vascular stents and esophageal stents, implantable hearing aids and external artificial larynx and other auxiliary equipment.
Due to the long contact time with the human body, the coating on the implantable medical device needs better biocompatibility in addition to low friction coefficient, wear resistance and corrosion resistance. In addition, antibacterial properties are also important to ensure long-term use of the implant. At present, the commonly used implant materials are mainly titanium alloy, cobalt chromium alloy, nickel titanium alloy, some stainless steel and magnesium alloy. In order to make the implant material better applied to the human body, coating technology is usually used to improve its surface properties.