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:
Oct. 26, 2004
Filed:
May. 14, 2001
Fritz Magerl, St. Gallen, CH;
Erich Wintermantel, Fislisbach, CH;
Jörg Mayer, Niederlenz, CH;
Roger Roland Tognini, Widnau, CH;
Clemens Dransfeld, Lenzburg, CH;
Walter Spirig, Platz-Walzenhausen, CH;
Sepitec Foundation, Vaduz, LI;
Abstract
An osteosynthesis screw ( ) used especially for application by a translaminar vertebral screw, comprises a shaft ( ) at least partially provided with a thread ( ) and a head ( ) formed at one of its ends and having a notch ( ) for a tool. Said shaft ( ) has a section (A) with a thread ( ) on the end section oriented towards the head ( ). The remaining section (B) of the shaft ( ) up to the free end is produced without a thread. The head ( ) has a diameter (D ) corresponding at least approximately to the outer diameter (DA) of the thread ( ) and is provided with the inner notch ( ) for a tool. The section (A) of the shaft ( ) with the thread ( ) has a configuration of uniform thickness, e.g. a trilobular configuration. Thus, the invention provides an osteosynthesis screw ( ) exhibiting a short section (A) with a thread ( ) and a long section (B) without a thread, said screw having a pull-out head ( ) which is secured both axially and rotationally.