Method and apparatus for hindering osteolysis in porous implants
AssigneeBiomet, Inc.
InventorJoel Patrick Bales
Life of this patent
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Abstract
A prosthetic implant, and method for making same, is described. The prosthetic implant preferably has a porous coating containing a plurality of pores therein. A biodegradable material is introduced into the pores, preferably under vacuum conditions, and substantially fills the pores. Because the pores are filled with the biodegradable material, they hinder infiltration of wear particles generated during loading of the prosthetic implant. Simultaneously, the biodegradable material permits infiltration of new bone tissue into the filled pores.
Claims28
A prosthetic implant having a porous coating on at least a portion of a surface thereof, wherein the porous coating has a plurality of exposed pores formed therein, wherein loading of the prosthetic implant generates at least one wear particle, wherein the prosthetic implant is adjacent to a surface containing bone tissue, comprising:
- a biodegradable material disposed within a substantial number of exposed pores, thereby making the porous coating substantially non-porous;
- wherein the biodegradable material hinders infiltration of the at least one wear particle into the exposed pores;
- wherein the biodegradable material resorbs and permits infiltration of the bone tissue into the exposed pores.
A prosthetic implant, wherein loading of the prosthetic implant generates at least one wear particle, wherein the prosthetic implant is adjacent to a surface having bone tissue, comprising:
- a porous coating disposed on at least a portion of a surface of the prosthetic implant, wherein the porous coating has a plurality of exposed pores thereon;
- a biodegradable material disposed within the plurality of exposed pores so as to substantially fill the pores;
- wherein the biodegradable material hinders infiltration of the at least one wear particle into the exposed pores;
- wherein the biodegradable material permits infiltration of the bone tissue into the exposed pores.
A prosthetic implant, wherein loading of the prosthetic implant generates at least one wear particle, wherein the prosthetic implant is adjacent to a surface having bone tissue, comprising:
- a substrate;
- a porous coating disposed on at least a portion of a surface of the substrate, wherein the porous coating defines a porous surface;
- a biodegradable material disposed within the porous surface so as to make the porous surface substantially non-porous;
- wherein the biodegradable material hinders infiltration of the at least one wear particle into the porous surface;
- wherein the biodegradable material permits infiltration of the bone tissue into the porous surfaces.
A method of making a prosthetic implant having a porous coating on at least a portion of a surface thereof, wherein the porous coating has a plurality of exposed pores formed therein, wherein loading of the prosthetic implant generates wear particles, wherein the prosthetic implant is adjacent to a surface having bone tissue, comprising:
- disposing a biodegradable material within the exposed pores so as to make them substantially non-porous;
- wherein the biodegradable material substantially hinders infiltration of the wear particles into the at least one pore;
- wherein the biodegradable material permits infiltration of the bone tissue into the exposed pores.
A method of making a prosthetic implant, wherein loading of the prosthetic implant generates at least one wear particle, wherein the prosthetic implant is adjacent to a surface having bone tissue, comprising:
- disposing a porous coating on at least a portion of a surface of the prosthetic implant, wherein the porous coating has at least one exposed pore formed therein;
- disposing a biodegradable material within the at least one exposed pore;
- wherein the biodegradable material hinders infiltration of the at least one wear particle into the at least one exposed pore;
- wherein the biodegradable material permits infiltration of the bone tissue into the at least one exposed pore.
A method of making a prosthetic implant, wherein loading of the prosthetic implant generates at least one wear particle, wherein the prosthetic implant is adjacent to a surface having bone tissue, comprising:
- providing a substrate;
- disposing a porous coating on at least a portion of a surface of the substrate, wherein the porous coating defines an exposed porous surface thereon;
- disposing a biodegradable material within the exposed porous surface so as to make it substantially non-porous;
- wherein the biodegradable material hinders infiltration of the at least one wear particle into the porous surface;
- wherein the biodegradable material permits infiltration of the bone tissue into the porous surface, after resorption of the biodegradable material.
Dependencies are inferred from the claim text.