Adjustable bone anchor assembly

US8075599B2 · kind B2 · utility

Assignee

• Warsaw Orthopedic, Inc.

Inventors

• Chris E. Johnson · Germantown, US
• Heather Lindenman · Otterbein, US
• Rodney Ray Ballard · Lakeland, US
• John R. Dimar · Louisville, US

Key dates

• Filing date: Oct 18, 2005
• Grant date: Dec 13, 2011
• Expiry date: Dec 15, 2029

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B2090/037
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A medical implant device has in one embodiment a receiver member for receiving an elongated member, a crown member, an anchor member and a retaining member. An embodiment of the receiver member has an axial opening, a transverse channel, a chamber including at least one substantially flat wall, and a groove. An embodiment of the crown member has at least one substantially flat side. An embodiment of the anchor member has a head with at least one substantially flat surface that may be parallel to the anchor member's longitudinal axis, and an anchoring portion. An embodiment of the retaining member is a substantially flat clip. The crown member and anchor member are inserted into the chamber, and the retaining member is inserted into the groove beneath them. The anchor member may be pivoted substantially in one plane with respect to the receiver member until locked.