1
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 ...


2
Qi Bin Bao, Paul A Higham: Hydrogel bead intervertebral disc nucleus. Pfizer Hospital Products Group, Peter C Richardson, Lawrence C Akers, Raymond W Augustin, March 9, 1993: US05192326 (639 worldwide citation)

A prosthetic nucleus for implantation in the disc space after removal of a damaged or degenerated nucleus is formed from a multiplicity of hydrogel beads having a water content of at least 30%. The beads are covered by a semi-permeable membrane. The membrane has porosity less than the size of the be ...


3
Matthew P Poggie, Peter S Walker, Frederick C Ewald: Apparatus for knee prosthesis. Pfizer Hospital Products Group, Peter C Richardson, Lawrence C Akers, Raymond W Augustin, October 5, 1993: US05250050 (258 worldwide citation)

A modulator apparatus for use in the preparation of bone surfaces and the implantation of a modular total knee prosthesis in a patient, which apparatus comprises cutting guides, templates, alignment devices, a distractor and clamping instruments which provide modularity and facilitate bone resection ...


4
Matthew P Poggie, Peter S Walker, Frederick C Ewald: Apparatus for knee prosthesis. Pfizer Hospital Products Group, Peter C Richardson, Lawrence C Akers, Raymond W Augustin, March 26, 1991: US05002547 (248 worldwide citation)

A modular apparatus for use in the preparation of bone surfaces and the implantation of a modular total knee prosthesis in a patient, which apparatus comprises cutting guides, templates, alignment devices, a distractor and clamping instruments which provide modularity and facilitate bone resection a ...


5
Alan M Ashby: Femoral cutting guide. Howmedica International, Peter C Richardson, Lawrence C Akers, Raymond W Augustin, October 3, 1995: US05454816 (236 worldwide citation)

An orthopedic instrument for guiding a saw blade for preparing the distal end of a human femur to receive an endoprosthetic femoral component has a base component provided with guide for guiding cutting blades. The guide can be used to shape all of the necessary femoral surfaces to receive the femor ...


6
Alan Ashby, Mark A Cowling: Surgical apparatus. Howmedice International, Peter C Richardson, Lawrence C Akers, Raymond W Augustin, June 15, 1999: US05911723 (223 worldwide citation)

A surgical tensioning apparatus has a base, first and second bone tissue engaging elements mounted on the base and being displaceable toward and away from each other. One of the tissue engaging elements being adapted to be oriented by the tissue engaged thereby. A guide element is provided which is ...


7
Michael W Dudasik, Matthew P Poggie, Michael J Schulzki: Prosthetic hip implantation method and apparatus. Howmedica, Peter C Richardson, Lawrence C Akers, Raymond W Augustin, March 4, 1997: US05607431 (207 worldwide citation)

A surgical instrument system for preparing the medullary canal of the femur for implanting a prosthetic femoral component includes a template to be used in determining osteotomy position from an x-ray. A gauge is provided to locate and mark this position on the anterior femur. A distal reamer having ...


8
Robert V Kenna: Method and instrumentation for the replacement of a knee prosthesis. Pfizer Hospital Products Group, Peter C Richardson, Lawrence C Akers, Raymond W Augustin, August 6, 1991: US05037423 (170 worldwide citation)

A novel method for replacing a previously implanted knee joint prosthesis in a patient is disclosed in which the previously implanted femoral component is replaced with a revision femoral component having thicker distal and posterior bearing portions so as to restore the natural anatomic transverse ...


9
Deh Chuan Sun, Casper F Stark: Non-oxidizing polymeric medical implant. Howmedica, Peter C Richardson, Lawrence C Akers, Raymond W Augustin, May 9, 1995: US05414049 (169 worldwide citation)

A medical implant made of polymeric material having an increased oxidation resistance is formed by a method including the steps of placing a resin powder in a sealed container. A substantial portion of the oxygen is removed from the sealed container by either a vacuum, an oxygen absorbent or by flus ...


10
George M Corsi, Richard M Brooks, Paul J Viola: Cerclage wire positioning insert. Pfizer Hospital Products Group, Peter C Richardson, Lawrence C Akers, Raymond W Augustin, March 2, 1993: US05190545 (168 worldwide citation)

A bone fracture stabilization apparatus includes a cable positioning insert for a bone plate of the type having a series of apertures therein for receiving bone screws for attaching the bone plate to the bone. The cable positioning insert has a body shaped for at least partial insertion into at leas ...