1
Thomas P Hedman, John P Kostuik, Geoffrey R Fernie, Brian E Maki: Artificial spinal disc. Health & Research Services, Rogers Bereskin & Parr, July 26, 1988: US04759769 (827 worldwide citation)

An artificial disc for a human spine. The disc has upper and lower members hinged together at their rear portions and biased apart at their fronts by stiff coil springs. Rear stop surfaces limit the opening movement of the members. Vertically projecting tabs at the front and side of each member are ...


2
Steffee Arthur D: Artificial disc. AcroMed Corporation, Tarolli Sundheim & Covell, December 10, 1991: US05071437 (765 worldwide citation)

A spinal disc prosthesis comprises an upper flat rigid plate, a lower flat rigid plate, and a flat elastomeric core interposed between said plates and adhered to the plates. A plurality of spaced-apart protuberances extend outwardly from the exposed faces of the plates for engagement with vertebrae ...


3
Michael Harrington: Artificial disc. Robert L Marsh, April 13, 1999: US05893889 (592 worldwide citation)

A disc prosthesis for insertion between vertebrae of the spin has upper and lower members and a pivot ball retained in a socket to prevent the ball from becoming removed from the socket. Also, a shock absorbing member is fitted between the upper and lower member of the prosthesis. The upper and lowe ...


4
Bret Ferree: Artificial intervertebral disc replacement methods and apparatus. Gifford Krass Groh Sprinkle Anderson & Citkowski PC, July 16, 2002: US06419704 (579 worldwide citation)

Artificial disc replacements for natural intervertebral discs make use of a shaped body having a final volume sized to consume at least a portion of an intervertebral disc space, and a filling within the shaped body enabling the body to cyclically compress and expand in a manner similar to the disc ...


5
Robert D Fraser, Alexander Grinberg, Daniel Malone, Bradley Moore, Michael J O&apos Neil, Mark Boomer: Medical installation tool. DePuy Acromed, Nutter McClennen & Fish, June 29, 2004: US06755841 (379 worldwide citation)

An installation tool that is useful for the efficient and effective placement of an article, such as an artificial disc, between adjacent vertebral bodies is provided. The installation tool can be provided as a kit having modular components which allow the surgeon to select from among a variety of c ...


6
Thomas A Zdeblick, William F McKay: Artificial disc implant. SDGI Holdings, Woodard Emhardt Naughton Moriarty & McNett, June 11, 2002: US06402785 (358 worldwide citation)

An artificial disc implant includes an upper shell, a lower shell, and a spacer therebetween. The spacer preferably has properties similar to that of a natural spinal disc, while the upper and lower shells form a rigid interface between the implant and the adjacent vertebral bodies. The upper and lo ...


7
Bret A Ferree: Artificial disc replacements with natural kinematics. Gifford Krass Groh Sprinkle Anderson & Citkowski PC, March 16, 2004: US06706068 (341 worldwide citation)

This invention improves upon prior art total disc replacements (TDRS) by more closely replicating the kinematics of a natural disc. The preferred embodiments feature two or more fixed centers of rotation (CORs) and an optional variable COR (VCOR) as the artificial disc replacements (ADRs) translates ...


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Thomas A Zdeblick, William F McKay: Artificial disc implant. SDGI Holdings, Woodard Emhardt Moriarty McNett & Henry, April 19, 2005: US06881228 (184 worldwide citation)

An artificial disc implant includes an upper shell, a lower shell, and a spacer therebetween. The spacer preferably has properties similar to that of a natural spinal disc, while the upper and lower shells form a rigid interface between the implant and the adjacent vertebral bodies. The upper and lo ...


10
Howard Cohen, Ladislau Biro, Matthew S Cohen: Artificial disc spinal surgical prosthesis. Advanced Prosthetic Technologies, Howard C Miskin Esq, Gloria Tsu Yip Esq, October 16, 2007: US07282063 (173 worldwide citation)

A spinal surgical prosthesis such as an artificial disc having a pair of upper and lower plate members, a flexible disc interposes therebetween and a rigid collar made of a bio-compatible and bio-resorbable material surrounding the flexible disc between the upper and lower plate members. Prior to th ...