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. 24, 2015
Filed:
Oct. 11, 2011
Ketchen Smith, Escondido, CA (US);
Ketchen Smith, Escondido, CA (US);
Alphatec Spine, Inc., Carlsbad, CA (US);
Abstract
An apparatus for provisionally locking a polyaxial head on a fixed head of a bone screw using a locking bushing includes an elongated housing with a proximal end and a distal end, the distal end having couplers for releasably coupling with the polyaxial head; an inner shaft slidably engaged within the housing and including a distal portion, a middle portion, and a proximal portion; and an actuator that selectively positions the inner shaft within the housing to engage at least one of the distal portion, the middle portion, and the proximal portion with at least one of the couplers and the bushing disposed between the distal portion and the fixed head of the bone screw.