EP0082621A1
Expired / Lapsed
EP
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Implantable bone prosthesis
Assignee: Collagen Aesthetics Inc
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Filing: 1982-12-02
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Granted: —
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Expires: 2002-12-02
Abstract
Abstract A flexible, bone prosthesis is disclosed that comprises demineralized bone powder contained within a medical grade porous flexible casing made from polymeric fibers or a microporous membrane. The pores of the casing are smaller than the particle size of the bone powder but large enough to permit ingress of body cells associated with bone formation.
Inventors
- 👤 Thomas L. Smestad
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 11:43
CPC Classifications
A; A61; A61L; A61L27/00; A61L27/36; A61L27/3641; A61L27/3645; A61L27/365; A61F; A61F2/00; A61F2/02; A61F2/28; A61F2/2846; A61L27/14; A61L27/22; A61L27/24; A61L27/3604; A61L27/3608; A61L27/40; A61L27/44; A61L27/446; A61L27/50; A61L27/56; A61F2/30; A61F2002/30001; A61F2002/30003; A61F2002/3006; A61F2002/30062; A61F2210/00; A61F2210/0004; A61F2310/00; A61F2310/00005; A61F2310/00359; A61F2310/00365; A61L2430/00; A61L2430/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
57 words
An implantable bone prosthesis comprising particles of bone, dentin, or mixtures thereof contained in a porous casing characterized in that the bone or dentin particles are demineralized and the casing is flexible and porous with the pores being smaller than the particle size of the particles but large enough to permit ingress of osteogenic or mesenchymal cells.
Claim 2
Dependent Claim
57 words
An implantable bone prosthesis comprising particles of bone, dentin, or mixtures thereof contained in a porous casing characterized in that the bone or dentin particles are demineralized and the casing is flexible and porous with the pores being smaller than the particle size of the particles but large enough to permit ingress of osteogenic or mesenchymal cells.
Claim 3
Dependent Claim
29 words
The implantable bone prosthesis of Claim 1 wherein the particle size of the demineralized bone or dentin particles is in the range of about 40 to about 500 microns.
Claim 4
Dependent Claim
25 words
The implantable bone prosthesis wherein the particle size of the demineralized bone or dentin particles is in the range of about 75 to 250 microns.
Claim 5
Dependent Claim
25 words
The implantable bone prosthesis wherein the particle size of the demineralized bone or dentin particles is in the range of about 75 to 250 microns.
Claim 6
Dependent Claim
39 words
The implantable bone prosthesis of Claim 1, 2, or 3 wherein the size of the pores in the casing is greater than about five microns and less than the smallest particle size of the demineralized bone or dentin particles.
Claim 7
Dependent Claim
15 words
The implantable bone prosthesis of Claim 1 wherein the casing is made from a fabric.
Claim 8
Dependent Claim
24 words
The implantable bone prosthesis of Claim 1 wherein the casing is made from a material that bioerodes after a predetermined time period following implantation.
Claim 9
Dependent Claim
18 words
The implantable bone prosthesis of Claim 1, 5, or 6 wherein the casing is made from crosslinked collagen.
References Cited (Backward Citations)
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