Patent
Interbody spinal fusion implants
Gary Karlin Michelson
- 01 Oct 1996
612
TL;DR: In this paper, a spinal fusion implant that is at least partially cylindrical, made of material appropriate for human implantation and having preferably, but not necessarily, one closed end and one end capable of being closed, such that an internal chamber can be filled and hold any natural or artificial osteoconductive, osteoinductive, osteogenic, or other fusion enhancing material.
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Abstract: The present invention discloses a spinal fusion implant that is at least partially cylindrical, made of material appropriate for human implantation and having preferably, but not necessarily, one closed end and one end capable of being closed, such that an internal chamber can be filled and hold any natural or artificial osteoconductive, osteoinductive, osteogenic, or other fusion enhancing material. The partially cylindrical implant directly participates and is incorporated in the ensuing fusion. In the preferred embodiment, the implant of the present invention relies on surface roughenings of the outer surface to enhance its stability and resist dislodgement from within the disc space between two adjacent vertebrae. The implant of the present invention incorporates at its rear end, an engagement means to facilitate insertion or extraction of the implant. The implant may be filled with, coated with, and/or composed of, fusion promoting substances. Finally, the implant of the present invention does not require rotation for its insertion and can be seated by linear advancement.
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Citations
Patent
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References
Osseointegrated Titanium Implants: Requirements for Ensuring a Long-Lasting, Direct Bone-to-Implant Anchorage in Man
TL;DR: It is concluded that the technique of osseointegration is a reliable type of cement-free bone anchorage for permanent prosthetic tissue substitutes in man for various bone restorative procedures.
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Bone morphogenetic protein
TL;DR: Bone morphogenetic protein (BMP) made by the process comprising the steps of demineralizing bone tissue; treating the demined bone tissue under aqueous conditions with a water soluble neutral salt and a solubilizing agent for the BMP, the agent being selected from the group consisting of urea and guanidine, and thereby transforming the bone collagen to gelatin and extracting BMP into the solution of solubiliizing agent as mentioned in this paper.
1.3K
Patent
Intervertebral disc prosthesis
David J. Kuntz
- 12 Jun 1981
TL;DR: In this paper, an intervertebral disc prosthesis is proposed to replace a natural intervein disc and to restore the normal intervertesbral spacing without complete loss of flexibility of the spinal joint.
960
Patent
Intervertebral disc endoprosthesis
Karin Dr. Büttner-Janz,Arnold Keller,Jean-Philippe Dr. Lemaire +2 more
- 25 Feb 1993
TL;DR: In this article, the articular surface forms curvatures of different mean radius in the median section and in the frontal section, and stops are provided on the prosthesis plates and the prosthetic core.
955
Patent
Expandable fabric implant for stabilizing the spinal motion segment
Stephen D. Kuslich
- 17 May 1995
TL;DR: An expandable, porous fabric implant for insertion into the interior of a reamed out disc which is packed with material to stabilize the spinal segment is described in this article, where the fabric pores allow for tissue ingrowth the implant.
908
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