Patents by Inventor Leda C. Hewka

Leda C. Hewka 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).

  • Prosthetic implant with spacers having tapered trailing edges
    Patent number: 5163963
    Abstract: A prosthetic implant for insertion into a cement filled intramedullary canal including a plurality of spacers formed from PMMA. The spacers include a body having a frontal portion and a trailing portion. The body of the spacers narrowing with distance from said frontal portion toward said trailing portion. The narrowing body of the spacers interrupting the flow of cement along the implant body as the body is inserted into a cement filled intramedullary canal. The narrowing trailing portion of the spacers cause the cement flow to smoothly re-attach to the implant body without creating substantial disturbances or vortexes in the cement.
    Type: Grant
    Filed: February 6, 1992
    Date of Patent: November 17, 1992
    Assignee: Zimmer, Inc.
    Inventors: Leda C. Hewka, Perry A. Geremakis, Mark B. Lester, Jack E. Parr
  • Prosthetic implant with spacers having tapered trailing edges
    Patent number: 5116380
    Abstract: A prosthetic implant for insertion into a cement filled intramedullary canal including a plurality of spacers formed from PMMA. The spacers include a body having a frontal portion and a trailing portion. The body of the spacers narrowing with distance from said frontal portion toward said trailing portion. The narrowing body of the spacers interrupting the flow of cement along the implant body as the body is inserted into a cement filled intramedullary canal. The narrowing trailing portion of the spacers cause the cement flow to smoothly re-attach to the implant body without creating substantial disturbances or vortexes in the cement.
    Type: Grant
    Filed: February 28, 1991
    Date of Patent: May 26, 1992
    Assignee: Zimmer, Inc.
    Inventors: Leda C. Hewka, Perry A. Geremakis, Mark B. Lester, Jack E. Parr
  • Femoral hip stem prosthesis
    Patent number: D378413
    Type: Grant
    Filed: June 17, 1994
    Date of Patent: March 11, 1997
    Assignee: Joint Medical Products Corporation
    Inventor: Leda C. Hewka