The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 28, 1992
Filed:
Jan. 17, 1990
Bradford H Hack, Arcadia, CA (US);
Philip O Merritt, Los Angeles, CA (US);
Osteonics Corporation, Allendale, NJ (US);
Abstract
The present invention concerns a femoral hip prosthetic implant, and a process, that incorporates an interior channel in the implant, which channel permits the implant, after it is properly positioned in a canal at the proximal end of a prepared femur, to be left in that position. Cement is then injected through that channel and discharged through medial ports in the implant to flood and up-well in the space between the implant and the femoral canal, thereby bonding and sealing the implant to the proximal portion of the femur while the implant remains seated in the desired position within the femur. Preferably a collar is provided at the distal portion of the stem to firmly seat and center the stem within the femoral canal. Also, preferably a spacer is provided at the mid-portion of the stem to center the stem within the femoral canal and to prevent cement from passing down the femoral canal beyond the proximal end of the stem.