Patents by Inventor Douglas W. Stuart

Douglas W. Stuart 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).

  • Universal modular prosthesis stem extension
    Patent number: 5133760
    Abstract: Disclosed is an improved universal modular prosthetic stem extension which may be installed on a prosthesis in a multiplicity of differing orientations to allow adaptation to a multiplicity of differing patient conditions. The stem includes a coupling mechanism allowing the stem to be rotated to any one of a multiplicity of rotative positions with respect to a prosthetic base, whereupon the stem may be tightened and fixed in position at a desired such orientation. The inventive stem extension is disclosed in conjunction with embodiments of distal femoral, proximal tibial, and proximal femoral prostheses.
    Type: Grant
    Filed: February 12, 1990
    Date of Patent: July 28, 1992
    Assignee: Alvarado Orthopedic Research, Inc.
    Inventors: Thomas D. Petersen, Douglas W. Stuart