Foam prosthesis for spinal disc

A closed-cell foam spinal disc implant with a Poisson ratio less than 0.5 addresses the challenges of disc height loss and re-operation risks in DDD treatments by providing a compressible and bondable nucleus pulposus replacement that maintains disc health and allows for non-surgical revision, ensuring long-term intervertebral disc functionality.
US20110029084A1Inactive Publication Date: 2011-02-03PROMETHEAN SURGICAL DEVICES
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
PROMETHEAN SURGICAL DEVICES
Publication Date
2011-02-03
Estimated Expiration
Not applicable · inactive patent
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Abstract

Disclosed herein are spinal disc implants comprising a foam adapted to completely or partially replace a nucleus pulposus within a spinal disc cavity, the foam being a nonabsorbable, closed cell and having a Poisson ratio of less than 0.5. Also disclosed are methods of implanting a foam, either as an in-situ curable material or as a preformed foam.
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Description

RELATED APPLICATIONS

[0001] This application claims the benefit of priority under 35 U.S.C. §119(e) of U.S. Provisional Application No. 60 / 931,407, filed May 22, 2007, U.S. Provisional Application No. 60 / 930,064, filed May 14, 2007, and U.S. Provisional Application No. 60 / 930,104, filed May 14, 2007, the disclosures of which are incorporated herein by reference.FIELD OF THE INVENTION

[0002] Disclosed herein are prostheses for replacing all or part of a nucleus pulposus in a spinal disc area.BACKGROUND OF THE INVENTION

[0003] This disclosure relates to treatments and implant materials for treating the medical condition called degenerative disc disease (DDD) by augmenting the intervertebral disc space, with or without the removal of intradiscal tissue, the nucleus pulposus (NP), and localizing, supplementing, or replacing native NP with an in situ curing polymer (Nucleus Replacement Prosthetic or NRP) while the outer intervertebral membrane called the annulus fibrosus (AF) heals after ruptu...

Claims

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