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US 7,115,222 B2Granted
Dual function prosthetic bone implant and method for preparing the same
AssigneeCalcitec, Inc.
InventorsJiin-Huey Chern Lin, Chien-Ping Ju, Chih-Hung Tsai
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Abstract
The present invention discloses a prosthetic bone implant made of a hardened calcium phosphate cement having an apatitic phase as a major phase, which includes a dense cortical portion bearing the majority of load and a porous cancellous portion allowing a rapid blood/body fluid penetration and tissue ingrowth.
Claims20
A method of forming a prosthetic bone implant comprising:
- adding a porous component paste to one or more first molds, wherein the porous component paste comprises at least one calcium phosphate cement combined with at least one pore forming agent and at least one setting agent, wherein the first molds are disposed in a second mold;
- adding a load bearing component paste to the second mold;
- removing one or more of the first molds;
- forming a hardened calcium phosphate article, the hardened calcium phosphate article comprising a load bearing component at least partially surrounding one or more porous components;
- immersing the hardened calcium phosphate article in one or more immersing fluids for a predetermined amount of time;
- and
- forming the prosthetic bone implant, wherein the prosthetic bone implant comprises the immersed hardened calcium phosphate article.
4 more elements
Dependencies are inferred from the claim text.