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:
Jun. 29, 1993
Filed:
Jun. 21, 1991
Gregg S Baker, Lake Forest, CA (US);
Paul B Hafeli, El Toro, CA (US);
Artifex, Ltd., Newport Beach, CA (US);
Abstract
A spinal implant that has an adjustable rod that connects and stabilizes the vertebrae of a vertebral column. The implant has screws that are attached to the vertebrae. Each screw has a clamp with a first bore that allows the clamp to be placed over the screw. The first bore of the clamp is larger than the major diameter of the screw, so that the clamp can float about the screws. The clamps each have a second bore perpendicular to the first bore, adapted to receive and hold the rod. Integrally formed with the second bore of each clamp are a pair of flanges. When the flanges are deflected inward, the clamp 'grabs' the rod. Placed on both sides of each clamp are a pair of nuts that are tightened to deflect the flanges and secure the rod to the clamp. The diameter of the second bore and rod are approximately the same so that a small deflection of the flanges produces a large clamping force on the rod.