Patent ID: 7604870

Claim:
A porous biomechanically and biochemically compatible nickelide of titanium, TiNi material comprising: a matrix of TiNi comprising interconnected struts, each strut having an outer surface and an internal zone, the matrix having an atomic ratio of Ni:Ti varying from 0.96:1 to 1.13:1 and including a maximum concentration of 10 atomic % of oxygen with the balance being Ni and Ti wherein the Ni concentration is limited to a maximum 53 atomic %; composite precipitates interspersed within the matrix; and a multiplicity of interconnected pores defined by the matrix, wherein the pores have a pore size distribution given as follows; Pore Size (μm) Percentage <50 μm <5% 50 to 500 μm >75% >500 μm balance wherein the material has an open porosity varying from 35 to 80% and the matrix having mechanical properties suitable for surgical implantation, and wherein the matrix is devoid of Ni-enriched secondary phases.