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:
Nov. 26, 2002
Filed:
Jun. 20, 2000
Thomas T. Haider, Riverside, CA (US);
Other;
Abstract
The invention is a pedicle screw assembly ( ) for use with a rod ( ) for the immobilization of bone segments. The assembly is composed of a screw ( ), a poly-axial housing ( ), a washer ( ), a set screw ( ), and a cup shaped washer ( ). When the screw is placed inside the poly-axial housing ( ), the head of the screw ( ) comes into contact with a middle section of the poly-axial housing ( ), and is secured into the bone so that the poly-axial housing is pivotable. The housing includes a pair of upstanding posts ( ) with interior threads. A washer ( ) is inserted between the head of the screw ( ) and the rod. A cap ( ), having a bottom with a pair of openings ( ) and a lateral cross connector ( ), is placed over the posts ( ) so that the cross connector ( ) engages the rod. The cross connector and washer have semi-cylindrical rod engaging surfaces. A set screw ( ) is threaded into the housing posts to secure the rod.