Articular joint implant
First Claim
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1. An implant configured for insertion into a patient'"'"'s joint, said implant comprising:
- a first surface and a depth extending from the first surface to a second surface generally opposite the first surface;
a plurality of first cavities along the first surface of the implant, each of said first cavities extending to a bottom surface of said first cavity;
wherein the first cavities are larger than the second cavities; and
a plurality of second cavities located below at least one of the first cavities, each of said second cavities extending from the bottom surface of at least one of the first cavities;
wherein said first cavities are only located on the first surface of the implant and do not extend throughout the depth of said implant; and
wherein the second cavities do not extend throughout the depth of the implant.
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Abstract
Implantable biomaterials, particularly hydrogel substrates with porous surfaces, and methods for enhancing the compatibility of biomaterials with living tissue, and for causing physical attachment between biomaterials and living tissues are provided. Also provided are implants suitable for load-bearing surfaces in hard tissue repair, replacement, or augmentation, and to methods of their use. One embodiment of the invention relates to an implantable spinal disc prosthesis.
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Citations
20 Claims
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1. An implant configured for insertion into a patient'"'"'s joint, said implant comprising:
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a first surface and a depth extending from the first surface to a second surface generally opposite the first surface; a plurality of first cavities along the first surface of the implant, each of said first cavities extending to a bottom surface of said first cavity; wherein the first cavities are larger than the second cavities; and a plurality of second cavities located below at least one of the first cavities, each of said second cavities extending from the bottom surface of at least one of the first cavities; wherein said first cavities are only located on the first surface of the implant and do not extend throughout the depth of said implant; and wherein the second cavities do not extend throughout the depth of the implant. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A biocompatible substrate having an outer surface and a depth, the biocompatible substrate comprising:
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a plurality of first cavities along the outer surface of the biocompatible substrate, each of said first cavities extending to a bottom surface of said first cavity; and a plurality of second cavities located below at least one of the first cavities, each of said second cavities extending from the bottom surface of the first cavity; wherein the first cavities are larger than the second cavities; wherein said first cavities are only located along the outer surface of the biocompatible substrate and do not extend throughout the depth of said biocompatible substrate; wherein said second cavities do not extend throughout the depth of the biocompatible substrate; and wherein the biocompatible substrate is a load bearing device that is configured for implantation in a joint. - View Dependent Claims (19, 20)
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Specification