MEDICAL IMPLANTS AND METHODS FOR DELIVERING BIOLOGICALLY ACTIVE AGENTS
First Claim
1. An implant comprising:
- a porous substrate;
a bearing portion of polymeric material connected to the porous substrate by infiltration of the polymeric material into at least a portion of the porous substrate, the bearing portion including a bearing surface; and
at least one biologically active agent incorporated into another portion of the porous substrate.
1 Assignment
0 Petitions
Accused Products
Abstract
Medical implants, such as orthopedic implants of the type used in partial or total joint replacement procedures, for example. The implants include a porous substrate, and a bearing portion of a polymeric material, for example, which is at least partially molded within the porous substrate. The bearing portion includes a bearing surface that is exposed to an articulating component of another medical implant, and the porous metal substrate contacts the bone for osseointegration of the bone tissue into the porous substrate to anchor the implant. The porous substrate may include biodegradable carrier materials, in the form of one or more layers, that carry biologically active agents such as antibiotics and bone growth factors, for example. The layers of biodegradable carrier materials may be tailored such that, after implantation of the implants, the biologically active agents are released sequentially and/or over time into the surrounding tissue to reduce the chances of infection and/or to promote osseointegration of the implant, for example.
141 Citations
21 Claims
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1. An implant comprising:
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a porous substrate; a bearing portion of polymeric material connected to the porous substrate by infiltration of the polymeric material into at least a portion of the porous substrate, the bearing portion including a bearing surface; and at least one biologically active agent incorporated into another portion of the porous substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system for incorporating biologically active agents into an implant, the system comprising:
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an implant comprising; a porous substrate; and a bearing portion of polymeric material connected to the porous substrate by infiltration of the polymeric material into at least a portion of the porous substrate, the bearing portion including a bearing surface; and a mold comprising; a body that conforms to a shape of the porous substrate; and at least one channel configured to direct a fluid including at least one biologically active agent into another portion of the porous substrate of the implant. - View Dependent Claims (9, 10, 11, 12)
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13. A method for incorporating biologically active agents into an implant comprising the steps of:
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providing an implant comprising; a porous substrate; and a bearing portion of polymeric material connected to the porous substrate by infiltration of the polymeric material into at least a portion of the porous substrate, the bearing portion including a bearing surface; and injecting at least one biologically active agent into another portion of the porous substrate. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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Specification