Michael S Chapman

US Patent:

53643984, Nov 15, 1994

Filed:

Sep 21, 1992

Appl. No.:

7/948193

Inventors:

Michael W. Chapman - New York NY
Charles C. Edwards - New York NY
Dana C. Mears - New York NY

Assignee:

Pfizer Hospital Products Group, Inc. - New York NY

International Classification:

A61B 1758

US Classification:

606 69

Abstract:

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 an elongated plate portion adapted to be secured to the outer cortical wall and a hollow sleeve adapted to extend into the femur. The epiphyseal/metaphyseal implant can be connected to either the angled side plate or the intramedullary rod. The system may also include an elongated bone plate connectable to the angled side plate, one or more additional epiphyseal/metaphyseal implants of variable length, an additional angled side plate, a distal buttress plate connectable to the elongated bone plate, and a plurality of bone screws of a universal design. Preferably, many or all of the components of the system are made of an inert, resilient titanium-base alloy.

US Patent:

48966614, Jan 30, 1990

Filed:

Feb 5, 1988

Appl. No.:

7/152455

Inventors:

Roy Bogert - Lincoln Park NJ
Michael W. Chapman - Sacramento CA
Charles C. Edwards - Baltimore MD
Dana C. Mears - Pittsburgh PA

Assignee:

Pfizer, Inc. - New York NY

International Classification:

A61B 1718
A61B 1728

US Classification:

606 86

Abstract:

A forceps for use in orthopedic surgical procedures having readily interchangeable tip elements and a reversible ratchet mechanism, for controlling the tip elements. A variety of tips for compression and distraction are provided. The ratchet mechanism permits controlled increments of force to be applied to the tips.