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:
Jul. 23, 1991
Filed:
Aug. 09, 1990
Robert S Howland, Seal Beach, CA (US);
Advanced Spine Fixation Systems Incorporated, Stanton, CA (US);
Abstract
Improved instrumentation of the posterior spine includes a threaded screw for insertion into the sacrum, threaded adjusting rods and intravertebral hook device on the end of the adjusting rod. One end of the adjusting rod includes a pivotal clevis assembly and an automatic safety interlock for securing the clevis assembly to the screw. The receiving end of the bone screw includes spaced arms to receive the clevis which is inserted and rotated to a locking position. Thereafter, the hooks are positioned on the lamina and the adjusting rod is adjusted for compression or distraction. The hex area on the adjusting rods are then safety wired. The generally triangular orientation provides added strength and a wider foot print attachment which will resist rotational forces. Also disclosed is an improved bone screw which facilitates placement of a bone cement in the desired location.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile