Patents by Inventor Robert L. Fuson

Robert L. Fuson 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: 4744793
    Abstract: A prosthetic ligament connection assembly includes a plug adapted to fit within an opening in a bone so that the prosthetic ligament in the opening will be secured to the bone via a uniform interface therebetween.
    Type: Grant
    Filed: September 6, 1985
    Date of Patent: May 17, 1988
    Assignee: Zimmer, Inc.
    Inventors: Jack E. Parr, Robert L. Fuson
  • Patent number: 4566138
    Abstract: A prosthetic device adapted to be secured to a supporting bone by a thickness of acrylic bone cement. The prosthetic device has an outer surface which includes a plurality of spacers projecting therefrom. The spacers are made of an acrylic material, such as polymethyl methacrylate (PMMA), and are adapted so that when the prosthetic device is positioned against the supporting bone, the spacers provide a uniform space between the bone and prosthetic device, thus uniformly controlling the thickness of cement. The acrylic spacers will repolymerize and bond with the layer of acrylic bone cement. The nature of the bond formed between the new acrylic bone cement and the acrylic spacers should eliminate the stress concentrations at the interface between the spacers and the cement layer, thereby enhancing fixation of the prosthesis.
    Type: Grant
    Filed: April 24, 1985
    Date of Patent: January 28, 1986
    Assignee: Zimmer, Inc.
    Inventors: Edward L. Lewis, Jack E. Parr, Mark A. Fox, Robert L. Fuson
  • Patent number: 4293962
    Abstract: A device for plugging the medullary canal in joint replacement surgery which prevents the cement used for fixation from extending beyond that point where it is useful and which also creates a closed space to facilitate more complete cement filling of the femoral canal or other boney cavities is disclosed. The device is comprised of a tapered cylindrical plug which is threadedly engaged to a long flexible shaft capable of being inserted into the medullary canal. The shaft is disengaged from the plug after the plug is lodged at the appropriate place in the canal. The plug is made of a bio-compatible material.
    Type: Grant
    Filed: February 14, 1980
    Date of Patent: October 13, 1981
    Assignee: Zimmer USA, Inc.
    Inventor: Robert L. Fuson