1
Richard A Erickson, Steven L Griffith: Intervertebral disc prosthesis and method. Sulzer Spine Tech, Merchant & Gould P C, April 9, 2002: US06368350 (569 worldwide citation)

The present invention is directed to intervertebral prosthetic devices and methods. The intervertebral prosthetic devices and methods of the invention provides a variable instantaneous axis of rotation. In general, the disclosed devices include two bearing surfaces, a first bearing surface being cur ...


2
Peter J Pohndorf, Richard A Erickson: Anterior cervical vertebral stabilizing device. Sulzer Spine Tech, Kenneth S Barrow, May 18, 1999: US05904683 (312 worldwide citation)

An implantable device for affixing to the anterior side of cervical vertebrae for stabilizing the cervical vertebral column. A plate has an anterior surface and a posterior surface and a plurality of through holes open at the anterior surface and at the posterior surface. Each hole has an anterior p ...


3
Richard A Erickson: Expandable fusion device and method. Sulzer Spine Tech, Merchant & Gould P C, July 16, 2002: US06419705 (303 worldwide citation)

The present invention is directed to expandable bone fusion devices and methods of use. In general, a fusion device according to the invention includes a first member and a second member which can be deployed and locked into an expanded configuration to stabilize the adjacent bone during fusion of t ...


4
Douglas W Kohrs: Intervertebral implant with reduced contact area and method. Sulzer Spine Tech, Merchant & Gould P C, May 1, 2001: US06224631 (257 worldwide citation)

The disclosure provides fusion implants, instruments and methods for insertion of the implants between opposing vertebral bodies to facilitate stabilization or arthrodesis of an intervertebral joint. A cross section through the longitudinal dimension of the implant is substantially configured in an ...


5
Daniel G Schmiel, Rodney L Houfburg, Daniel D McPhillips, William C Welch: Posterior oblique lumbar arthrodesis. Sulzer Spine Tech, University of Pittsburgh of the Commonwealth System of Higher Education, Merchant & Gould P C, September 30, 2003: US06626905 (238 worldwide citation)

Instruments and methods for spinal stabilization are disclosed. In preferred embodiments, the invention provides greater stabilization of vertebral bodies through methods including combinations of bilateral external fixation systems and intervertebral implants to provide greater fusion stability, gr ...


6
Paul M Sand: Posterior spinal instrument guide and method. Sulzer Spine Tech, Merchant & Gould P C, September 5, 2000: US06113602 (215 worldwide citation)

The present invention provides instruments and methods for insertion of spinal implants into the intervertebral space between opposing vertebral bodies. Instrumentation according to the invention includes an instrument guide having a first member and a second member each having a tubular proximal re ...


7
Eric L Gray, Paul F Boschert: Temporary spinal fixation apparatuses and methods. Sulzer Spine Tech, Merchant & Gould P C, June 1, 2004: US06743231 (215 worldwide citation)

Temporary spinal fixation apparatuses and methods are disclosed for temporarily fixing the relative position of spinal implant assemblies until a permanent fixation position is determined. The disclosed apparatuses and methods enhance the ease of placement of spinal implant assemblies and facilitate ...


8
Gary K Michelson: Multi-lock anterior cervical plate. Sulzer Spine Tech, June 4, 2002: US06398783 (210 worldwide citation)

Anatomically contoured anterior cervical plates with bone ingrowth surfaces, providing for intersegmental compressive preloading, and a rigid and locked interface to all of the bone screws, with those engaging the vertebrae deployed in highly convergent pairs. The bone screws have a tapered self-tap ...


9
Douglas W Kohrs, Paul M Sand: Lordotic spinal implant. Sulzer Spine Tech, Merchant & Gould P C, September 19, 2000: US06120506 (172 worldwide citation)

A lordotic implant has a frusto-conical shape with external threads. Prior to placement of the implant, vertebrae are distracted in a manner to provide a desired lordosis between the vertebrae. The pre-distracted vertebrae are then tapped to provide a tapped bore having a geometry matching the conic ...


10
Rodney L Houfburg: Spinal surgery tools and positioning method. Sulzer Spine Tech, Merchant & Gould P C, September 4, 2001: US06283966 (124 worldwide citation)

Instruments and methods are disclosed for positioning a spinal implant within an intervertebral disc space between adjacent vertebrae. The invention advantageously provides for positioning of the implant at a predetermined location with reduced likelihood of implant positioning which deviates from t ...