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:
Apr. 28, 1992
Filed:
Jan. 31, 1991
Mark R Forte, Pine Brook, NJ (US);
Other;
Abstract
A system of three femoral components with the same distal diameter, for a hip joint prosthesis, includes an intramedullary stem for each femoral component, each stem having a distal end, a proximal end, a lateral side extending between the distal and proximal ends, and a medial side extending between the distal and proximal ends opposite to the lateral side, the medial side at a proximal portion of the stem having a concave curvature; a neck mounted to the proximal end of each stem; a femoral ball component mounted at the proximal end of each neck, each femoral ball component having an articular center; the medial sides at the proximal portions of all of the stems substantially being in exact alignment only when the intramedullary stems are offset in the lengthwise direction from each other, thereby permitting a consistent fit within a given femur and achieving different positions of the articular centers of the femoral ball components, since the medial sides at the proximal ends of all of the stems are given distal diameter have the same radius of curvature, and with the stems incorporating the same proximal-medial radius of curvature for a given distal diameter reflecting consecutive larger proximal-transverse stem widths for addressing a consistent, light mechanical press-fit into femurs of different physiological sizes.