Patents by Inventor Debra Wolfarth

Debra Wolfarth 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).

  • Porous coated implants having improved fatigue behavior
    Patent number: 5373621
    Abstract: Orthopaedic implants exhibiting improved fatigue strength are disclosed. By forming a plurality of nodules on the surface of an implant and depositing a porous coating onto the surface of these nodules, the fatigue strength of implants such as those made from .alpha.+.beta. titanium alloys, e.g., Ti-6Al-4V alloy is substantially improved. The present invention provides a novel geometry which substantially reduces the stress concentration factor created by the interfacial geometry of conventional porous coatings. Methods of manufacturing porous coated orthopaedic implants are also disclosed.
    Type: Grant
    Filed: July 26, 1993
    Date of Patent: December 20, 1994
    Assignee: The Trustees of the University of Pennsylvania
    Inventors: Paul Ducheyne, Debra Wolfarth
  • Porous coated implants
    Patent number: 5258030
    Abstract: Orthopaedic implants exhibiting improved fatigue strength are disclosed. By forming a plurality of nodules on the surface of an implant and depositing a porous coating onto the surface of these nodules, the fatigue strength of implants such as those made from .alpha.+.beta. titanium alloys, e.g., Ti-6Al-4V alloy is substantially improved. The present invention provides a novel geometry which substantially reduces the stress concentration factor created by the interfacial geometry of conventional porous coatings. Methods of manufacturing porous coated orthopaedic implants are also disclosed.
    Type: Grant
    Filed: July 8, 1991
    Date of Patent: November 2, 1993
    Assignee: The Trustees of the University of Pennsylvania
    Inventors: Debra Wolfarth, Paul Ducheyne