Orthopedic implant having a porous surface and method of making same
OwnerWen-Ching Say, Chih-I Lin +1inventors
InventorsWen-Ching Say, Chih-I Lin, Shengfu Lin
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Abstract
An orthopedic implant has a porous surface with a plurality of pores, some of which are provided with a pores-within-a-pore structure. The pores-within-a-pore structure has a pore opening ranging in size between 10 and 800 microns. The present invention also discloses a process for making an orthopedic implant which is provided in the surface thereof with a pores-within-a-pore porous structure.
Claims12
An orthopedic implant having a plurality of pores on at least a portion of its surface, wherein part of the plurality of pores have a pores-within-a-pore porous structure, said pores-within-a-pore porous structure comprising a first-stepped pore on said surface, and at least one second-stepped pore within the first-stepped pore, and optionally a n-stepped pore within a (n−1)-stepped pore, wherein n is third to sixth, wherein said first-stepped pore has an pore opening ranging in size between 10 and 800 microns.
A process for making an orthopedic implant, comprising the following steps:
- forming a plurality of initial pores on at least one portion of a surface of an orthopedic implant;
- and
- forming a pores-within-a-pore structure within the plurality of initial pores, said pores-within-a-pore porous structure comprising a first-stepped pore on said surface, and at least one second-stepped pore within the first-stepped pore, and optionally a n-stepped pore within a (n−1)-stepped pore, wherein n is third to sixth, wherein said first-stepped pore has an pore opening ranging in size between 10 and 800 microns,
- wherein an intermediate electric current density pore etching method is used to form said pores-within-a-pore structure.
Dependencies are inferred from the claim text.