Patents by Inventor Heinrich M. F. Planck

Heinrich M. F. Planck 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).

  • Joint endoprosthesis
    Patent number: 4932969
    Abstract: The joint endoprosthesis is formed of a compressible elastic hollow body which is disposed between two anchoring elements. The hollow body defines a closed cavity which is filled with an incompressible fluid medium. Compressive loadings near the edges of the endoprosthesis cause a displacement of the liquid into relieved regions of the prosthesis so as to avoid tensile forces from occurring in the anchoring of the prosthesis to the bones.
    Type: Grant
    Filed: December 17, 1987
    Date of Patent: June 12, 1990
    Assignee: Sulzer Brothers Limited
    Inventors: Otto Frey, Rudolf Koch, Heinrich M. F. Planck