Methods for producing medical implants with roughened, particulate-free surfaces

摘要

Many medical implants have roughened surfaces that promote cell, bone or tissue adhesion as well as the adhesion of bone cement, for better affixing of the implants in the body. The roughened surfaces should be free of particulates, such as commonly arise from the blasting of implant surfaces with particulates to produce a desired surface finish. A method of producing implants with implant surfaces free of such particulates is to blast the implant surface with a biocompatible liquid, such as water, under high pressure. Under certain circumstances, a solvent may contain particulates that assist in producing the roughened surface, and the particulates are dissolved, sublimated or vaporized from the implant surface, leaving no particulate residue.