Patent ID: 11883556
Assignee: SELENIUM MEDICAL
Field: Medical technology (Instruments)
Classification: CPC A  B  C | IPC A  B  C

Claim 0:
1. A biocompatible metal implant made of an alloy of titanium, aluminum and vanadium comprising:
at least one treated surface, said treated surface subject to abrasive mechanical treatment of the surface of said material by means of abrasive grains based on calcium phosphate;
said treated surface subject to acid treatment by soaking, at a temperature above 40° C., said material in a bath comprising sulfuric acid and hydrochloric acid, followed by at least one rinse with demineralized water; and
said treated surface subject to sodium treatment by soaking, at a temperature above 40° C., said material in a sodium hydroxide-based bath having only sodium hydroxide, followed by at least one rinse with demineralized water and by hot air drying,
wherein said biocampatible metal implant treated surface has a macroporosity in the form of cells having dimensions of the order of 50 μm to 250 μm, said cells comprising pores of from 1 μm to 50 μm, and pores with a size of less than a micrometer, homogeneously over the whole of the treated surface, said treated surface having a surface roughness Ra of greater than or equal to 1.90 μm, and
wherein said biocompatible metal implant has undergone a surface treatment, said treated surface of said biocompatible metal implant having contents of aluminum and vanadium that are reduced by at least 30% relative to the initial alloy, measured by EDS analysis.