초록 ▼

Prosthetic joints, components for prosthetic joints, superhard bearing and articulation surfaces, diamond bearing and articulation surfaces, substrate surface topographical features, materials for making joints, bearing and articulation surfaces, and methods for manufacturing and finishing the same,

Prosthetic joints, components for prosthetic joints, superhard bearing and articulation surfaces, diamond bearing and articulation surfaces, substrate surface topographical features, materials for making joints, bearing and articulation surfaces, and methods for manufacturing and finishing the same, and related information are disclosed, including a prosthetic hip joint having at least one sintered polycrystalline diamond compact articulation surface and substrate surface topographical features in said polycrystalline diamond compact.

대표청구항 ▼

1. A prosthetic hip joint comprising:an acetabular cup including a sintered polycrystalline diamond compact, a substrate located on said acetabular cup polycrystalline diamond compact, said substrate including a metal, substrate surface topographical features located on said substrate, said substrat

1. A prosthetic hip joint comprising:an acetabular cup including a sintered polycrystalline diamond compact, a substrate located on said acetabular cup polycrystalline diamond compact, said substrate including a metal, substrate surface topographical features located on said substrate, said substrate surface topographical features tending to increase surface area of contact between said substrate and a diamond table, an acetabular cup diamond table sintered to said acetabular cup substrate on said acetabular cup polycrystalline diamond compact, said acetabular cup diamond table, a gradient transition zone between said acetabular cup substrate and said acetabular cup diamond table in said acetabular cup polycrystalline diamond compact, said acetabular cup gradient transition zone having a substrate side and a diamond table side, said acetabular cup gradient transition zone having both substrate metal and diamond therein, and said acetabular cup gradient transition zone exhibiting a transition of ratios of percentage content of substrate metal to diamond from one side of said gradient transition zone to another such that at a first point in said acetabular cup gradient transition zone near said substrate side, the ratio of percentage content of substrate metal to diamond is greater than it is at a second point in said acetabular cup gradient transition zone closer to said diamond side than said first point, chemical bonds between said acetabular cup diamond table and said acetabular cup substrate which tend to secure said diamond table to said substrate, an acetabular cup load bearing and articulation surface on said polycrystalline diamond compact, said acetabular cup load bearing and articulation surface including polycrystalline diamond, said acetabular cup load bearing and articulation surface being formed to present a shape that is at least partially concave spherical and against which a femoral head may articulate, a femoral head for articulation against said acetabular cup load bearing and articulation surface, said femoral head having a femoral head load bearing and articulation surface, said femoral head load bearing and articulation surface being at least partially convex spherical, a stem for placement into a femur, a body connecting to said stem, a neck having a proximal end and a distal end, said neck proximal end connecting to said body and said neck distal end connecting to said femoral head; wherein said polycrystalline diamond has been made by high pressure and high temperature sintering.