Patents by Inventor Fred W. Parkinson

Fred W. Parkinson 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).

  • Tool for gripping an orthopedic implant
    Patent number: 7037311
    Abstract: A tool for gripping an orthopedic implant having a recess. The tool includes a plurality of engagement members which extend freely from the tool body to their free ends. An elongate biasing member having a radially enlarged portion at its distal end is positioned along a central axis of the tool with its radially enlarged portion positioned between the engagement members. Axial translation of the biasing member biasingly engages the radially enlarged portion with the engagement members and resiliently deflects the engagement members from a contracted position to an expanded position. The engagement members are insertable into a recess in the implant when in the contracted position and outward biasing of the engagement members firmly secures the implant to the tool. The use engagement members which define a non-circular cross sectional shape and a correspondingly shaped recess in the implant inhibits relative rotational movement between the tool and implant.
    Type: Grant
    Filed: July 12, 2002
    Date of Patent: May 2, 2006
    Assignee: Zimmer Technology, Inc.
    Inventors: Fred W. Parkinson, Christine L. Douglas, Justin S. Hertzler, Stephen H. Hoag, Kyle A. Bohnenkamper
  • Tool for gripping and orthopedic implant
    Publication number: 20040010262
    Abstract: A tool for gripping an orthopedic implant having a recess. The tool includes a plurality of engagement members which extend freely from the tool body to their free ends. An elongate biasing member having a radially enlarged portion at its distal end is positioned along a central axis of the tool with its radially enlarged portion positioned between the engagement members. Axial translation of the biasing member biasingly engages the radially enlarged portion with the engagement members and resiliently deflects the engagement members from a contracted position to an expanded position. The engagement members are insertable into a recess in the implant when in the contracted position and outward biasing of the engagement members firmly secures the implant to the tool. The use engagement members which define a non-circular cross sectional shape and a correspondingly shaped recess in the implant inhibits relative rotational movement between the tool and implant.
    Type: Application
    Filed: July 12, 2002
    Publication date: January 15, 2004
    Inventors: Fred W. Parkinson, Christine L. Douglas, Justin S. Hertzler, Stephen H. Hoag, Kyle A. Bohnenkamper