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:
May. 31, 2016
Filed:
Jan. 27, 2012
Rolf Meier, Winterthur, CH;
Roland Baege, Wiesendangen, CH;
Rolf Meier, Winterthur, CH;
Roland Baege, Wiesendangen, CH;
ZIMMER GMBH, Winterthur, CH;
Abstract
The present invention relates to a straight stem () for the implantation into a proximal femur, the stem () comprising a proximal stem section () and a distal stem section (), the distal stem section () having a distal end () and a distal tip () arranged directly adjacent to the distal end () and defining a distalmost point of the distal end (), the stem () having, in an anterior-posterior view, a medial contour and a lateral contour, and the stem () having a straight stem center axis () between the medial contour and the lateral contour, wherein the distal end (), in an anterior-posterior view, has a convexly curved contour, and wherein the convexly curved contour of the distal end () merges with straight sections () of the medial contour and of the lateral contour at a medial merging point () and a lateral merging point (), respectively, wherein the medial merging point () and the lateral merging point () are offset with respect to each other in a direction parallel to the stem center axis (), wherein the lateral merging point () is arranged proximally with regard to the medial merging point (), wherein the convexly curved contour of the distal end () is such that the distal tip () is medially offset with respect to the stem center axis (), wherein the convexly curved contour of the distal end () has a curved medial section extending between the distal tip () and the medial merging point () and a curved lateral section extending between the distal tip () and the lateral merging point (), and wherein the contour of the distal end () is asymmetrically convexly curved such that the degree of curvature of the curved lateral section is smaller than the degree of curvature of the curved medial section.