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:
May. 20, 2003
Filed:
Mar. 22, 2000
Erik J. Wagner, Austin, TX (US);
Ralph F. Rashbaum, Dallas, TX (US);
Spinal Concepts, Inc., Austin, TX (US);
Abstract
A sacral screw assembly may provide a connection to a sacrum for a spinal fixation assembly. The sacral screw assembly may include a fixation component, connector, spinal rod, and a fastener. The connector and fixation component are configured to interconnect so that the connector inhibits translational and rotational motion of a spinal rod that is positioned within an opening of the connector. The connector may include a flared arm tip. The flared arm tip may fit within a groove of the fixation component to help position the connector within a cavity of the fixation component. The flared arm tip may also inhibit passage of the connector through the top of the cavity. The fixation component may have a threaded shank. The threaded shank may have a coarse pitch section located near a head of the fixation component, and a fine pitch section located near an end of the shank. When the fixation component is inserted into a sacrum, the coarse pitch section of threading and the fine pitch section of threading may inhibit backout of the fixation component from the sacrum.