Patents by Inventor John E. Hamm

John E. Hamm has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5688279
    Abstract: An alignment guide for positioning a saw guide at a predetermined position on the distal femur is placed on the femur and receives an intramedullary rod inserted in the femur. The guide has an arm for coupling the saw guide block. The guide includes an intercondylar saddle that engages the intercondylar notch of the femur to align the saw guide at a predetermined position proximal to the intercondylar notch.
    Type: Grant
    Filed: January 11, 1996
    Date of Patent: November 18, 1997
    Assignee: DePuy Orthopedics, Inc.
    Inventors: Donald E. McNulty, David C. Kelman, John R. Moreland, John E. Hamm
  • Patent number: 5562675
    Abstract: A sizing assembly for determining the optimum size of a femoral component of a knee prosthesis is placed against the resected distal end of a femur. The assembly includes a body with a flat surface for contacting the resected surface of the femur and feet for engaging the femoral condyles. The assembly further includes a pivoted stylus that slides in the body and engages the anterior femoral cortex. Once the size of the femoral component is determined, a drill bushing corresponding to the femoral component is supported on the body. The drill bushing includes two apertures for guiding a drill to bore pilot holes in the resected femur.
    Type: Grant
    Filed: May 9, 1995
    Date of Patent: October 8, 1996
    Assignee: DePuy Inc.
    Inventors: Donald E. McNulty, David C. Kelman, John R. Moreland, John E. Hamm
  • Patent number: 5445642
    Abstract: The invention relates to a method for reconstructing a femoral portion of a knee in a total knee replacement, the distal end of which has medial and lateral condyles and an intercondylar notch therebetween defining a distal patellar groove for the articulation of the patella with the femur during flexion of the knee.
    Type: Grant
    Filed: September 1, 1992
    Date of Patent: August 29, 1995
    Assignee: DePuy Inc.
    Inventors: Donald E. McNulty, David C. Kelman, John R. Moreland, John E. Hamm
  • Patent number: 4716894
    Abstract: An acetabular cup inserting instrument comprises a first handle and a second handle extending therefrom. The second handle is selectively rotatable about the first handle and selectively lockable in a desired position with respect to the first handle.
    Type: Grant
    Filed: August 27, 1986
    Date of Patent: January 5, 1988
    Assignee: Zimmer, Inc.
    Inventors: Mark A. Lazzeri, John E. Hamm
  • Patent number: D276463
    Type: Grant
    Filed: May 3, 1982
    Date of Patent: November 20, 1984
    Assignee: Zimmer, Inc.
    Inventor: John E. Hamm