Patents by Inventor Robert G. Collins

Robert G. Collins 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).

  • Acetabular shell with selectively available bone screw holds
    Patent number: 5571198
    Abstract: An improvement in an acetabular cup component of a prosthetic hip implant in which an acetabular shell receives a bearing member within the interior of the acetabular shell and has at least one bone screw hole, the improvement enabling the interoperative selection of implanting the acetabular shell without the employment of a bone screw or with the employment of at least one bone screw for assisting securement of the acetabular shell within the natural bone at the implant site, the improvement including a plug for seating in the bone screw hole to close the bone screw hole, the plug including a fastener arrangement for engaging the acetabular shell to fasten the plug within the bone screw hole, and a sealing arrangement for engaging the acetabular shell essentially to seal the bone screw hole against the migration of debris from the bearing member through the bone screw hole, the fastener arrangement including an operator arrangement for being selectively operated from the interior of the acetabular shell to
    Type: Grant
    Filed: January 21, 1994
    Date of Patent: November 5, 1996
    Assignee: David A. Drucker
    Inventors: David A. Drucker, Robert G. Collins, Nicholas N. G. Dong