Interspinous process implant having a thread-shaped wing and method of implantation

US8147548B2 · kind B2 · utility

Assignee

• KYPHON SARL · CH

Inventors

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

Key dates

• Filing date: Mar 17, 2006
• Grant date: Apr 3, 2012
• Expiry date: Nov 12, 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 an embodiment of the present invention can includes an implant comprising a spacer and a frame having a central body and a helical shaped wing extending from the central body. The frame can be positioned near about adjacent spinous processes, and can be rotated and urged so that the adjacent spinous processes pass within a groove of the wing, thereby allowing the wing to be arranged on an opposite side of the adjacent spinous processes. The spacer can then be arranged over the frame so that the spacer contacts and distracts the spinous processes, thereby limiting relative movement of the adjacent spinous processes during extension.