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. 04, 2002
Filed:
Apr. 13, 1999
Joseph Edward Carchidi, West Bridgewater, MA (US);
Alan R. Balfour, Camarillo, CA (US);
Other;
Abstract
A self-drilling and tapping multi-drive bone screw ( ) for rigid fixation of craniomaxillofacial tissue grafts and bone plates has a tip ( ) which incorporates a defined twist drill shaft with a sharp cutting point tip ( ) to easily pierce and drill a pilot hole and prepare for the insertion of self-tapping screw threads ( ). A cylindrical dome shaped head ( ) for rigid fixation of craniomaxillofacial tissue grafts and geometrically sized bone plates is formed on the screw distal to the drilling and tapping features. A spline feature ( ) is incorporated into the cylindrically dome shaped head for easy pickup, assembly and insertion of the bone screw with a corresponding spline driver tool ( ). The spline driver feature also allows the bone screw ( ) to be driven with either a standard square or cross blade driver tool.