ORBITAL IMPLANT
First Claim
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1. A process for manufacturing an orbital implant, the process comprising:
- shaping a mixture A into a substantially spherical body having a depression in its surface, with the depression having a size and shape of an orbital implant cap, wherein the mixture A comprises a bioactive material in particulate form, a binder, and a particulate pore forming agent;
filling the depression with a mixture B to form a structure, wherein the mixture B comprises a bioactive material and a binder;
consolidating the structure to form a spherical compact wherein the mixture B in the depression is coupled to the mixture A of the spherical body; and
sintering the spherical compact to obtain a substantially spherical orbital implant comprising;
an implant body comprising bioactive material of the mixture A and having macropores of at least 400 μ
m as well as micropores smaller than 50 μ
m, with some macropores being in communication with the outer surface of the implant body and with adjacent macropores being interconnected by openings and/or passageways so that open paths to the outer surface of the implant body are thereby provided, anda cap covering a portion of the implant body, the cap comprising bioactive material of the mixture B and having substantially no pores or only micropores smaller than 50 μ
m, wherein the cap is thin relative to the diameter of the orbital implant, and wherein the cap is embedded in the implant body.
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Abstract
An orbital implant includes a body of bioactive material having macropores of at least 400 μm, and a cap of bioactive material having substantially no pores or only micropores smaller than 50 μm. The cap covers a portion of the body.
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Citations
20 Claims
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1. A process for manufacturing an orbital implant, the process comprising:
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shaping a mixture A into a substantially spherical body having a depression in its surface, with the depression having a size and shape of an orbital implant cap, wherein the mixture A comprises a bioactive material in particulate form, a binder, and a particulate pore forming agent; filling the depression with a mixture B to form a structure, wherein the mixture B comprises a bioactive material and a binder; consolidating the structure to form a spherical compact wherein the mixture B in the depression is coupled to the mixture A of the spherical body; and sintering the spherical compact to obtain a substantially spherical orbital implant comprising; an implant body comprising bioactive material of the mixture A and having macropores of at least 400 μ
m as well as micropores smaller than 50 μ
m, with some macropores being in communication with the outer surface of the implant body and with adjacent macropores being interconnected by openings and/or passageways so that open paths to the outer surface of the implant body are thereby provided, anda cap covering a portion of the implant body, the cap comprising bioactive material of the mixture B and having substantially no pores or only micropores smaller than 50 μ
m, wherein the cap is thin relative to the diameter of the orbital implant, and wherein the cap is embedded in the implant body. - View Dependent Claims (2, 3, 4, 5, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification