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:
Feb. 24, 2004
Filed:
Dec. 21, 2001
Lutz Biedermann, VS-Villingen, DE;
Jürgen Harms, Karlsruhe, DE;
Biedermann Motech GmbH, VS-Schwenningen, DE;
Abstract
A bone screw, known per se, with a thread section ( ) and a receiving part ( ) for receiving a rod ( ) to be connected to the bone screw is created. The connection and locking of the connection between bone screw and rod takes place via an outer nut ( ). So that the connection has the necessary strength and durability, the outer nut ( ) has on the inside a sleeve-shaped element ( ), having a predetermined inner measurement, the outer diameter of which is almost identical to or slightly smaller than the diameter of the bore ( ), and a pressure element ( ) arranged therein. The pressure element ( ) (sic) has at its end facing the floor of the bore ( ) a first section ( ), the outer measurement of which is larger than the predetermined inner measurement and which effects a widening of the element ( ) when pressure is exerted on the rod ( ) to be received.