Porous materials, methods of making and uses
First Claim
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1. A method for forming a textured implant shell, the method comprising:
- coating a base shell with a first layer of an elastomer, the elastomer comprising a silicone base and a solvent;
applying porogens to the first layer of elastomer to form a first porogen-coated elastomer layer;
applying a second layer of the elastomer to the first porogen-coated elastomer layer;
applying porogens to the second layer of elastomer to form a second porogen-coated elastomer layer;
applying a third layer of the elastomer to the second porogen-coated elastomer layer to thereby form a multilayered porogen/elastomer coating on the base shell;
treating the multilayered porogen/elastomer coating on the base shell such that during the treatment the porogens become fused to one another while the uncured elastomer layers become cured, thereby forming a fused porogen scaffold surrounded by cured elastomer; and
removing the porogen scaffold from the cured elastomer, wherein the removing the porogen scaffold results in an interconnected open-cell textured implant shell;
wherein the porogens comprise poly(ethylene) glycol.
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Abstract
The present specification discloses porous materials, methods of forming such porous materials, biocompatible implantable devices comprising such porous materials, and methods of making such biocompatible implantable devices.
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Citations
16 Claims
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1. A method for forming a textured implant shell, the method comprising:
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coating a base shell with a first layer of an elastomer, the elastomer comprising a silicone base and a solvent; applying porogens to the first layer of elastomer to form a first porogen-coated elastomer layer; applying a second layer of the elastomer to the first porogen-coated elastomer layer; applying porogens to the second layer of elastomer to form a second porogen-coated elastomer layer; applying a third layer of the elastomer to the second porogen-coated elastomer layer to thereby form a multilayered porogen/elastomer coating on the base shell; treating the multilayered porogen/elastomer coating on the base shell such that during the treatment the porogens become fused to one another while the uncured elastomer layers become cured, thereby forming a fused porogen scaffold surrounded by cured elastomer; and removing the porogen scaffold from the cured elastomer, wherein the removing the porogen scaffold results in an interconnected open-cell textured implant shell; wherein the porogens comprise poly(ethylene) glycol. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for making a breast implant having a textured surface, the method comprising:
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(a) coating a breast implant shell with an uncured elastomer base to form an elastomer coated breast implant shell wherein the uncured elastomer base comprises a silicon-based elastomer and a solvent; (b) devolitalizing the solvent; (c) coating the elastomer coated breast implant shell with porogens to form an elastomer coated porogen mixture; (d) devolitalizing the solvent; (e) repeating step (a); (f) devolitalizing the solvent; (g) repeating step (c); (h) devolitalizing the solvent; (i) repeating step (a); (j) devolitalizing the solvent; (k) repeating step (c); (l) devolitalizing the solvent; (m) treating the elastomer coated porogen mixture such that the porogens are fused to form a porogen scaffold and the uncured elastomer base is cured; and (n) removing the porogen scaffold, wherein the removing the porogen scaffold results in the breast implant with porous material; wherein the porogens comprise poly(ethylene) glycol. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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Specification