POROGEN COMPOSITIONS, METHODS OF MAKING AND USES
First Claim
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1. A porogen composition comprising a core material and a shell material, wherein the core material comprises at least two compounds, wherein the shell material has a melting temperature that is lower than a melting temperature of the core material.
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Abstract
The present specification discloses porogen compositions comprising a core material and shell material, methods of making such porogen compositions, methods of forming such porous materials using such porogen compositions, biocompatible implantable devices comprising such porous materials, and methods of making such biocompatible implantable devices.
65 Citations
34 Claims
- 1. A porogen composition comprising a core material and a shell material, wherein the core material comprises at least two compounds, wherein the shell material has a melting temperature that is lower than a melting temperature of the core material.
- 10. A porogen composition comprising a core material and a shell material, wherein the core material comprises at least two compounds, wherein under a given physical or physicochemical treatment the shell material is fusible and the core material is non-fusible.
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21. A method for forming a breast implant, the method comprising the steps of:
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(a) coating a base material with an uncured elastomer base to form an elastomer coated base shell, wherein the uncured elastomer base comprises a silicon-based elastomer and a solvent; (b) coating the elastomer coated base shell with porogens to form an elastomer coated porogen mixture, wherein each of the porogens comprises a shell material and a core material, wherein the core material comprises at least two compounds, wherein the shell material has a melting temperature that is lower than a melting temperature of the core material; (c) repeating step (a); (d) repeating step (b); (e) 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 (f) removing the porogen scaffold, wherein the removing the porogen scaffold results in the base material with porous material. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. The method of claim 38, wherein the devolitalization step following step (c) about 20 minutes to about 50 minutes.
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34. A method for forming a breast implant with porous material, the method comprising the steps of:
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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, wherein each of the porogens comprises a shell material comprising sucrose and starch, and a core material comprising polyethylene glycol, wherein the core material comprises at least two compounds, wherein the shell material has a melting temperature that is lower than a melting temperature of the core material; (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.
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Specification