DR. MICHAEL W CHAPMAN, MD
Medical Practice at Y St, Sacramento, CA

5041114, Aug 20, 1991

Aug 15, 1988

7/232188

Michael W. Chapman - Sacramento CA
Charles C. Edwards - Baltimore MD
Dana C. Mears - Oakmont PA

Pfizer Hospital Products Group, Inc. - New York NY

A61B 1758

606 62

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.

5190544, Mar 2, 1993

Mar 18, 1991

7/670839

Michael W. Chapman - Sacramento CA
Charles C. Edwards - Baltimore MD
Dana C. Mears - Oakmont PA

Pfizer Hospital Products Group, Inc. - New York NY

A61B 1758

606 69

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.

4776330, Oct 11, 1988

Jun 23, 1986

6/877626

Michael W. Chapman - Sacramento CA
Charles C. Edwards - Baltimore MD
Dana C. Mears - Oakmont PA

Pfizer Hospital Products Group, Inc. - New York NY

A61F 504

128 92YY

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.

5201735, Apr 13, 1993

Mar 4, 1991

7/664160

Michael W. Chapman - Sacramento CA
Dana C. Mears - Pittsburgh PA
Charles C. Edwards - Baltimore MD

Pfizer Hospital Products Group, Inc. - New York NY

A61F 504

606 67

Apparatus for fixing a fracture of a bone including an elongated body member having a proximal end and a distal end for insertion into the intramedullary canal of the bone; a tab member having at least one aperture to allow for passage of a screw for fastening of the tab member to the bone; and a bolt for selectively removably coupling the tab member to the proximal end of the body member. Preferably, the tab member is of a hollow cylindrical configuration and removably interlocking the first plate member to a second plate member. In another embodiment, the apparatus include a body member for insertion into a bone cavity, the body member having at least one aperture disposed in close proximity to its first end to allow for passage of a screw for fastening the body member to the bone. The present invention is also directed to apparatus for fixing a bone fracture including a first elongated plate member having at least one aperture so as to permit passage of a screw for attachment to the outer surface of a first portion of the bone. The first plate member has a first end and a second end and has a predetermined curvature so as to conform generally to the curvature of the first portion of the bone.

5066296, Nov 19, 1991

Feb 2, 1989

7/305840

Michael W. Chapman - Sacramento CA
Dana C. Mears - Pittsburgh PA
Charles C. Edwards - Baltimore MD

Pfizer Hopsital Products Group, Inc. - New York NY

A61B 1758

606 64

Apparatus for fixing a fracture of a bone including an elongated body member having a proximal end and a distal end for insertion into the intramedullary canal of the bone; a tab member having at least one aperture to allow for passage of a screw for fastening of the tab member to the bone; and a bolt for selectively removably coupling the tab member to the proximal end of the body member. Preferably, the tab member is of a hollow cylindrical configuration and removably interlocking the first plate member to a second plate member. In another embodiment, the apparatus include a body member for insertion into a bone cavity, the body member having at least one aperture disposed in close proximity to its first end to allow for passage of a screw for fastening the body member to the bone. The present invention is also directed to apparatus for fixing a bone fracture including a first elongated plate member having at least one aperture so as to permit passage of a screw for attachment to the outer surface of a first portion of the bone. The first plate member has a first end and a second end and has a predetermined curvature so as to conform generally to the curvature of the first portion of the bone.

5122146, Jun 16, 1992

Feb 4, 1988

7/152172

Michael W. Chapman - Sacramento CA
Dana C. Mears - Pittsburgh PA
Charles C. Edwards - Baltimore MD

Pfizer Hospital Products Group, Inc. - New York NY

A61B 1756

606102

Fracture reduction tool is disclosed for use with a guide wire for reducing a bone fracture. The guide wire is of a uniform diameter and has a beaded end for placement into the medullary canal. The tool includes an elongated hollow shaft which can be passed into the medullary canal of the fractured bone through an entry hole prepared in the bone. The shaft has a bore along its length through which the guide wire can selectively pass. The shaft and/or the guide wire can be manipulated into and within the respective medullary canal portions of the fractured bone by translational and/or rotational movements so as to reduce the fracture. The tool also includes a measurement sleeve which moves over the shaft and provides a determination of the length of a nail to be inserted into the medullary canal of the reduced bone. A handle for the proximal end of the shaft allows for ease in manipulation of the shaft and guide wire. Locking mechanisms to secure the measurement sleeve and guide wire in position relative to the shaft are also provided.

5772662, Jun 30, 1998

Dec 6, 1996

8/761476

Michael W. Chapman - Sacramento CA
Charles C. Edwards - Baltimore MD
Dana C. Mears - Oakmont PA

Howmedica Inc. - New York NY

A61B 1780

606 69

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.

4896661, Jan 30, 1990

Feb 5, 1988

7/152455

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

Pfizer, Inc. - New York NY

A61B 1718, A61B 1728

606 86

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.