Calcium-hydroxide-treated polymeric implant matrial
First Claim
1. An implant material for hard tissue, the implant material comprising a porous matrix comprised of a mass of biologically-compatible polymeric particles, the particles being bonded together to form a unitary prosthetic implant, the prosthetic implant having interstices between the bonded particles forming pores into which bone tissue can grow and a quantity of calcium hydroxide distributed in the pores of the matrix, the pores having dimensions effective to permit the growth of bone tissue into the pores, the quantity of calcium hydroxide being effective to induce the growth of bone tissue in the pores.
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Abstract
An implant material for hard tissue comprising a porous matrix of a mass of biologically-compatible polymeric particles, the particles bonded together to form a unitary prosthetic implant, the prosthetic implant having interstices between the bonded particles forming pores into which bone tissue can grow and having a quantity of calcium hydroxide distributed in the pores of the matrix. Also disclosed is a packing material for forming in vivo prosthetic implants for hard tissue, the packing material comprising a mass of disjoint polymeric particles having an inner core and an outer coating and a quantity of calcium hydroxide distributed in the mass of polymeric particles effective to induce hard tissue growth.
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Citations
23 Claims
- 1. An implant material for hard tissue, the implant material comprising a porous matrix comprised of a mass of biologically-compatible polymeric particles, the particles being bonded together to form a unitary prosthetic implant, the prosthetic implant having interstices between the bonded particles forming pores into which bone tissue can grow and a quantity of calcium hydroxide distributed in the pores of the matrix, the pores having dimensions effective to permit the growth of bone tissue into the pores, the quantity of calcium hydroxide being effective to induce the growth of bone tissue in the pores.
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13. A packing material for forming in vivo prosthetic implants for hard tissue, the packing material comprising:
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(a) a mass of disjoint polymeric particles, each particle having an inner core comprised of a first biologically-compatible polymeric material and having an outer coating generally surrounding the inner core, the outer coating being comprised of a second biologically-compatible polymeric material, the second polymeric material being hydrophilic and having a composition different from the composition of the first polymeric material, the particles being of a size to permit the mass of the disjoint particles to be packed in a body cavity to form a prosthetic implant for hard tissue with interstices between compacted particles of the prosthetic implant forming pores into which tissue can grow; and (b) a quantity of calcium hydroxide distributed in the mass of polymeric particles, the quantity of calcium hydroxide being effective to induce the growth of hard tissue in the pores of the mass of the particles when packed in a body cavity. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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21. A packing material for forming in vivo prosthetic implants for hard tissue, the packing material comprising:
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(a) a mass of disjoint biologically-compatible polymeric particles, the particles being of a size to permit the mass of the disjoint particles to be packed in a body cavity to form a prosthetic implant for hard tissue with interstices between compacted particles of the prosthetic implant forming pores into which tissue can grow; and (b) a quantity of calcium hydroxide coated on the outer surfaces of said biologically-compatible polymeric particles, the quantity of calcium hydroxide being effective to induce the growth of hard tissue in the pores of the mass of the particles when packed in a body cavity. - View Dependent Claims (22, 23)
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Specification