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:
Aug. 09, 1994
Filed:
Sep. 17, 1992
Applicant:
Inventor:
Kerry Zang, Paradise Valley, AZ (US);
Assignee:
Orthopaedic Biosystems, Ltd., Scottsdale, AZ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61F / ;
U.S. Cl.
CPC ...
606 73 ; 606 60 ; 411398 ;
Abstract
A surgical bone screw having a head which has asymmetrical radii relative to the central axis of the screw. The cross-section of the head is configured as a lobular shape having a constant radii along one hemisphere of the head, and smaller radii along the opposing hemisphere of the head, with the smallest radius existing approximately perpendicular to the midline of the head member. The asymmetry of the head minimizes surface area of the screw protruding above the bone surface.