Patents by Inventor Michael Dexel

Michael Dexel 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: 4156944
    Abstract: A total ankle prosthesis is formed of two parts, the upper part of which has a concave lower surface in saggital section while the lower part has a convex upper surface in sagittal section slidingly guided on the upper part. Each of these surfaces is of wave form in frontal cross-section with one surface having a raised central portion while the other has a guide groove receiving the raised portion. The side walls of the upper part extend downwardly past the bottom surface of the lower part to protect and avoid excess rubbing of the bottom ends of the tibia and fibula on the bottom part of the prosthesis and to discourage scar tissue between the surfaces.
    Type: Grant
    Filed: November 4, 1977
    Date of Patent: June 5, 1979
    Assignee: Sulzer Brothers Limited
    Inventors: Adam Schreiber, Hans Zollinger, Michael Dexel