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:
May. 11, 2004
Filed:
May. 15, 2002
Moti Altarac, Aliso Viejo, CA (US);
Philip M. Mellinger, Ladera Ranch, CA (US);
Cross Medical Products, Inc., Irvine, CA (US);
Abstract
The invention provides a bone screw for use in an implant assembly having a member including a hole through which the screw extends. The member preferably includes a socket in an anchor that receives a rounded bottom portion of the screw head in order to form a ball and socket connection. The screw has a necked area below the rounded bottom portion which projects through the hole and below that on the longitudinal axis of the screw. The screw includes a knurled collar that is sized so as to allow the anchor to be inserted onto the screw but which subsequently restrains the anchor from falling downward onto the threaded area of the screw.