1
J David Kuntz: Intervertebral disc prosthesis. September 21, 1982: US04349921 (1077 worldwide citation)

An intervertebral disc prosthesis intended to replace a natural intervertebral disc and to restore the normal intervertebral spacing without complete loss of flexibility of the spinal joint. The prosthesis comprises a body of biologically-acceptable material suitably dimensioned and shaped to replac ...


2
Froning Edward C: Intervertebral disc prosthesis and instruments for locating same. Caplan Julian, April 8, 1975: US3875595 (885 worldwide citation)

A collapsible plastic bladder-like prosthesis of the same external form as the nucleus pulposis of an intervertebral disc has a stem through which liquid and/or plastic is introduced to inflate the prosthesis to natural form. The top and bottom have stud-like protrusions which fit into sockets which ...


3
Michael H Heggeness, Brian J Doherty: Prosthetic intervertebral devices. Laura G Barrow, May 7, 1996: US05514180 (824 worldwide citation)

Disclosed are prosthetic devices for insertion into intervertebral disc spaces after the removal of an intervertebral disc or after a corpectomy. Specifically, intervertebral devices having fixed shapes for accommodating the defined surface contours of vertebral endplates are disclosed. Also disclos ...


4
Karin Buttner Janz, Arnold Keller, Jean Philippe Lemaire: Intervertebral disc endoprosthesis. Waldemar Link & Co, Chilton Alix & Van Kirk, March 28, 1995: US05401269 (733 worldwide citation)

Intervertebral disc endoprosthesis with two prosthesis plates which are to be connected to the end plates of the relevant vertebrae, and with a prosthesis core which cooperates with at least one prosthesis plate via an articular surface permitting a rotational movement around the vertical axis, In o ...


5
Qi Bin Bao, Paul A Higham: Hydrogel intervertebral disc nucleus. Pfizer Hospital Products Group, Peter C Richardson, Lawrence C Akers, Raymond W Augustin, September 10, 1991: US05047055 (720 worldwide citation)

A prosthetic nucleus for a vertebral disc is made of a hydrogel material. The hydrogel prosthetic nucleus has a shape generally conforming to the natural nucleus pulposus. The hydrogel has a water content of at least 30% and has a compressive strength of 4MNm.sup.-2 or greater. When the hydrogel mat ...


6
Arun A Patil: Artificial intervertebral disc. Zarley McKee Thomte Voorhees & Sease, January 12, 1982: US04309777 (720 worldwide citation)

An artificial intervertebral disc for implantation in the disc space after the removal of a diseased or damaged cervical intervertebral is described and comprises upper and lower disc portions having a plurality of springs positioned therebetween to yieldably urge the disc portions away from each ot ...


7
Gary L Monson: Synthetic intervertebral disc prosthesis. Berman Aisenberg & Platt, September 5, 1989: US04863477 (695 worldwide citation)

A synthetic intervertebral disc prosthesis, molded in the same shape and general dimensions as a natural disc which it replaces after removal of a damaged natural disc, is molded of a biologically acceptable, non-porous, preferably rubber or silicone-rubber compound in two halves, each half having a ...


8
Karin Buettner Janz, Bernd Derr, Klaus Peter Erkel, Hans Joachim Helisch, Kurt Schellnack, Roland Schumann: Intervertebral disc endoprosthesis. Humboldt Universitaet zu Berlin, Jordan and Hamburg, July 26, 1988: US04759766 (663 worldwide citation)

An intervertebral disc endoprothesis comprises two symmetrical, concave end plates with an intermediate convex spacing piece. The end plates and the spacing piece have a plane guide rim. The end plates either have an edge shoulder or an annular groove for a toroid provided on the spacing piece. Alte ...


9
Karin Buttner Janz: Intervertebral disc endoprosthesis. Chilton Alix & Van Kirk, September 17, 1996: US05556431 (643 worldwide citation)

An intervertebral disc endoprosthesis which is to be inserted between two vertebrae and has a bottom plate and a top plate which are to be connected to the endplates, facing them, of the vertebrae additionally has screw fastening facilities in order to increase the security of retention of the prost ...


10
Robert E Atkinson, Peter T Keith: Devices and methods for the treatment of spinal disorders. SpinLabs, June 11, 2002: US06402750 (642 worldwide citation)

Devices and methods for treating a damaged intervertebral disc to reduce or eliminate associated back pain. Dynamic bias devices and reinforcement devices are disclosed, which may be used individually or in combination, to eliminate nerve impingement associated with the damaged disc, and/or to reinf ...