Interspinous process implant with slide-in distraction piece and method of implantation

US8070778B2 · kind B2 · utility

Assignee

• KYPHON SARL · CH

Inventors

• James F. Zucherman · San Francisco, US
• Ken Y. Hsu · San Francisco, US
• Henry A. Klyce · Piedmont, US
• Charles J. Winslow · Walnut Creek, US
• Scott A. Yerby · Montara, US
• John J. Flynn · Concord, US
• Steve Mitchell · Pleasant Hill, US
• John A. Markwart · Castro Valley, US

Key dates

• Filing date: Mar 17, 2006
• Grant date: Dec 6, 2011
• Expiry date: Jun 30, 2029

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B17/7068
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Systems and method in accordance with embodiments of the present invention can includes an implant having an initiating piece and a distraction piece. The initiating piece can include a lower distraction element, a second wing, a lower portion of a spacer, and a lower portion of a first wing. The initiating piece can be positioned such that an interspinous ligament of the targeted motion segment is disposed between the first and second wing. The distraction piece can include an upper distraction element, an upper portion of the spacer, and an upper portion of the first wing, and can be mated with the initiating piece by mating a rail of the distraction piece with a slot of the initiating piece, thereby disposing the implant between adjacent spinous processes.