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 (714 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 (630 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
Robert V Kenna: Spinal implant. Pfizer Hospital Products Group, Peter C Richardson, Lawrence C Akers, Mark Dryer, December 22, 1987: US04714469 (552 worldwide citation)

A spinal implant adapted to replace a disc between adjacent vertebrae having a predetermined thickness and profile chosen to match the space between said vertebrae and characterized by elongated protuberances adapted to be located in grooves drilled in said vertebrae and a porous coating on at least ...


4
Thomas A Silvestrini: Hydrophilic stent. Pfizer Hospital Products Group, Peter C Richardson, Lawrence C Akers, Eric M Lee, August 10, 1993: US05234456 (527 worldwide citation)

A stent for placement within a body lumen and comprising a wall structure wherein at least a portion thereof is a hollow wall. The hollow wall has disposed therein a hydrophilic material which can be in the form of a gel, for example, which swells upon introduction of a liquid into the hollow wall t ...


5
Arthur E Ellison, Rocco R Borzone: Arched bridge staple. Pfizer Hospital Products Group, Charles J Knuth, Peter C Richardson, Lorraine M Donaldson, February 18, 1986: US04570623 (370 worldwide citation)

A bone staple for attaching tubular shaped soft tissue to bone, in which the transverse bridge of the staple has teeth on its underside to grip the tissue and is arch shaped so that the center of the bridge is above the bone surface when the staple legs are driven fully into a bone.


6
Michael W Chapman, Charles C Edwards, Dana C Mears: Modular femoral fixation system. Pfizer Hospital Products Group, Peter C Richardson, Lawrence C Akers, Elizabeth O Slade, March 2, 1993: US05190544 (342 worldwide citation)

A modular femoral internal implant system for use in the treatment of femoral disorders resulting from injury, disease or congenital defect includes at least three interconnectable components: 1) an elongated epiphyseal/metaphyseal implant, 2) an intramedullary rod and 3) an angled side plate having ...


7
Thomas A Silvestrini, Joseph E Laptewicz Jr: Triaxially-braided fabric prosthesis. Pfizer Hospital Products Group, Peter C Richardson, Lawrence C Akers, Elizabeth O Slade, May 30, 1989: US04834755 (341 worldwide citation)

A novel prosthesis for use in repairing or replacing soft tissue is disclosed, which comprises a triaxially-braided fabric element having interwoven first, second and third sets of fibers, with the fibers of the second and third sets being oriented at substantially the same acute braiding angle with ...


8
Alfred V Vasconcellos, Ionel E Teodorescu, Joel W Cummings, Dean E McBeth: Surgical instrument for establishing compression anastomosis. Pfizer Hospital Products Group, Peter C Richardson, Lawrence C Akers, John L LaPierre, March 13, 1990: US04907591 (305 worldwide citation)

A surgical instrument for installing a plurality of interlocking coupling members forming a compression anastomosis assembly, particularly suitable for use in achieving anastomosis of a resected tubular organ, with the instrument having a cutting portion designed and configured for rotational moveme ...


9
Thomas A Silvestrini, Joseph E Laptewicz Jr: Triaxially-braided fabric prosthesis. Pfizer Hospital Products Group, Charles J Knuth, Peter C Richardson, Lawrence C Akers, September 9, 1986: US04610688 (285 worldwide citation)

A novel prosthesis for use in repairing or replacing soft tissue is disclosed, which comprises a triaxially-braided fabric element having interwoven first, second and third sets of fibers, with the fibers of the second and third sets being oriented at substantially the same acute braiding angle with ...


10
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 (254 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 ...