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:
Mar. 02, 2010
Filed:
Dec. 16, 2005
Matthew V. Leyden, St. Paul, MN (US);
William Thomas Ryder, Victoria, MN (US);
Wesley D. Johnson, Eden Prairie, MN (US);
Aaron J. Bisek, Elk River, MN (US);
Marc E. Ruhling, Goshen, IN (US);
Matthew S. Wallace, Fort Wayne, IN (US);
Matthew V. Leyden, St. Paul, MN (US);
William Thomas Ryder, Victoria, MN (US);
Wesley D. Johnson, Eden Prairie, MN (US);
Aaron J. Bisek, Elk River, MN (US);
Marc E. Ruhling, Goshen, IN (US);
Matthew S. Wallace, Fort Wayne, IN (US);
DePuy Products, Inc., Warsaw, IN (US);
Abstract
A bone fixation assembly includes a side plate for mounting on a bone and a barrel for receiving a portion of a lag screw, and configured to be inserted into a hole in the side plate. A mechanical spring located at the upper portion of the barrel biases a first detent portion toward a locking position with a second detent portion located on the side plate such that rotation of the barrel within the hole from a first position to a second position causes a compressing portion on the detent portion to contact a compressing portion on the second detent portion thereby compressing the mechanical spring so as to allow the barrel to be rotated to a third position wherein the mechanical spring is allowed to bias the first detent portion into the locking position such that a retaining portion of the first detent is adjacent to a retaining portion of the second detent and rotation of the barrel with respect to the side plate is restricted.