Bone prosthesis device

Claim 1

A process of fabricating a biocompatible mesh screen structure for bonding to a prosthetic substrate, characterized in comprising: (a) providing from four to eight layers of a mesh comprising a titanium alloy; and (b) subjecting the layered structure to a pro­cessing temperature below the beta-transformation tempera­ture of said alloy and a pre-determined pressure for a pre-selected period of time, the heating and pressing being carried out in a vacuum furnace maintained at a temperature of about 14 to 69°C (25° to 125°F) above said processing temperature and at a pre-determined vacuum. 2. The process according to claim 1 characterized in that said alloy comprises a member selected from the group consisting of commercially pure titanium and Ti-­6A1-4V. 3. The process according to claim 2 wherein said pro­cessing temperature is at least about 871°C (1600°F), said pre-determined pressure ranges from about 8.96 to 10.3 MPa (1300 to 1500 psi), said pre-selected period of time ranges from about 12 to 24 minutes and said pre-­determined vacuum is less than about 0.01 Pa (10⁻⁴ torr). 4. A process for fabricating a biocompatible mesh screen structure for bonding to a prosthetic substrate, characterized in comprising: (a) providing from four to eight layers of a mesh comprising a titanium alloy; and (b) subjecting the layered structure to a pro­cessing temperature below the beta-transformation tem­perature of said alloy and a pressure of about 8.96 to 10.3 MPa (1300 to 1500 psi) for a period of time of about 12 to 24 min, the heating and pressing being carried out in a furnace maintained at a temperature ranging from about 871°C to 940°C (1600° to 1725°F), depending upon the alloy, said furnace evacuated to provide a vacuum of less than about 0.081 Pa (10⁻⁴ torr).