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:
Dec. 13, 2011
Filed:
Jan. 28, 2009
Thomas Zehnder, Bäch, CH;
Reto Braunschweiler, Neftenbach, CH;
Patrick White, West Chester, PA (US);
Fabrice Chenaux, Exton, PA (US);
Thomas Zehnder, Bäch, CH;
Reto Braunschweiler, Neftenbach, CH;
Patrick White, West Chester, PA (US);
Fabrice Chenaux, Exton, PA (US);
Spinelab AG, Zug, CH;
Abstract
A pedicle screw with a closure device () for securing a rod () for stabilization of the vertebral column comprises a screw-in part (), a head part () provided on the screw-in part (), and a U-shaped recess () disposed in the head part (), which recess is formed by the inner surfaces () of two arms () and a bottom surface () connecting the two inner surfaces. The rod () is insertable into this recess, and is held by the closure device (). The rod () is provided with ridges () and grooves () running transversely with respect to the rod axis (). Likewise provided with corresponding ridges () and grooves () is the bottom surface (). The closure device () comprises a support element (), which is insertable between the two arms (). Disposed in a displaceable way on the support element () are two sliding parts (), which, via a movement mechanism, are able to be brought from a position of being pushed against each other into a position of being pushed apart, in which pushed-apart position the two end regions (), remote from one another, of the two sliding parts () each project into a recess () of the two arms () in the state of the support element () being inserted in the screw. The closure device () is thereby locked with the pedicle screw; the rod () is firmly held in the pedicle screw.