Porous material product and process
First Claim
1. A device comprising one or more porous portions, said porous portions useful for promoting neovascularization and ingrowth of vascularized tissue, each of said porous portions comprising:
- tissue contacting means for promoting ncovascularization and ingrowth of vascularized tissue and for minimizing formation of fibrous, scar, or capsule tissue, said tissue contacting means comprising;
a) a plurality of pores;
b) a plurality of pore interconnections;
c) said pores being each connected to at least one adjacent pore;
d) said pores being substantially continuously interconnected with each other to thereby form an open-cell configuration; and
wherein the pores and pore interconnections have surfaces which are substantially smoothly flowing and substantially free of sharp edges.
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Accused Products
Abstract
A method of preparing a device of a selected material to have pores and pore interconnections of predetermined sizes and shapes includes the steps of forming a selectively removable open-celled porous mold form of particles which adhere to one another, with the particles corresponding to the predetermined pore sizes and shapes, and interconnections between the particles which bind them together in the form in which the connections correspond to the predetermined sizes and shapes of the pore connections. Also included are the steps of filling the vacancies between the particles and connections of the form with the selected material, and then removing the form to leave the selected material. The resulting device is at least partly porous, the pores and pore interconnections corresponding in size and shape to the particles and connections respectively.
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Citations
15 Claims
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1. A device comprising one or more porous portions, said porous portions useful for promoting neovascularization and ingrowth of vascularized tissue, each of said porous portions comprising:
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tissue contacting means for promoting ncovascularization and ingrowth of vascularized tissue and for minimizing formation of fibrous, scar, or capsule tissue, said tissue contacting means comprising; a) a plurality of pores; b) a plurality of pore interconnections; c) said pores being each connected to at least one adjacent pore; d) said pores being substantially continuously interconnected with each other to thereby form an open-cell configuration; and wherein the pores and pore interconnections have surfaces which are substantially smoothly flowing and substantially free of sharp edges. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A doubly porous device for promoting neovascularization and ingrowth of vascularized tissue, said device comprising:
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a first porous portion and a second porous portion, said first and second porous portions separated by a membrane and wherein at least one of said porous portions includes; tissue contacting means for promoting neovascularization and ingrowth of vascular tissue and for minimizing formation of fibrous, scar, or capsule tissue, said tissue contacting means comprising; a) a plurality of pores; b) a plurality of pore interconnections; c) said pores being each connected to at least one adjacent pore; d) said pores being substantially continuously interconnected with each other to thereby form an open-cell configuration; and wherein the pores and pore interconnections have surfaces which are substantially smoothly flowing and substantially free of sharp edges. - View Dependent Claims (13, 14, 15)
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Specification