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. 12, 2013
Filed:
Jun. 27, 2012
Charles J. Winslow, Lafayette, CA (US);
Steven T. Mitchell, Pleasant Hill, CA (US);
John J. Flynn, Walnut Creek, CA (US);
James F. Zucherman, San Francisco, CA (US);
Ken Y. Hsu, San Francisco, CA (US);
Henry A. Klyce, San Francisco, CA (US);
H. Adam R. Klyce, Berkeley, CA (US);
Charles J. Winslow, Lafayette, CA (US);
Steven T. Mitchell, Pleasant Hill, CA (US);
John J. Flynn, Walnut Creek, CA (US);
James F. Zucherman, San Francisco, CA (US);
Ken Y. Hsu, San Francisco, CA (US);
Henry A. Klyce, San Francisco, CA (US);
H. Adam R. Klyce, Berkeley, CA (US);
Spartek Medical, Inc., Concord, CA (US);
Abstract
A bone anchor comprising a self-centering ball-joint suitable for use in a spine stabilization prosthesis which supports the spine while providing for the preservation of spinal motion. The bone anchor has a deflectable ball-rod partially received in a socket of a housing formed in the head of the bone anchor. A centering rod received partially in the ball-rod and partially within the housing operates to align the ball-rod with the longitudinal axis of the bone anchor. Deflection of the ball-rod bends the centering rod which in turn applies a restoring force upon the ball-rod.