Extension limiting devices and methods of use for the spine

US8114131B2 · kind B2 · utility

Assignee

• KYPHON SARL · CH

Inventors

• Andrew Kohm · Burlingame, US
• Hugues Malandain · Easton, US

Key dates

• Filing date: Nov 5, 2008
• Grant date: Feb 14, 2012
• Expiry date: Jul 10, 2030

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B17/7065
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Medical devices and related methods for the treatment of spinal conditions are described herein. In one embodiment, an apparatus includes a support member configured to be implanted at least partially in a space between adjacent spinous processes and an actuator coupled to the support member. The apparatus also includes an elongate retention member having a first end coupled to the actuator and a second end coupled to either the support member or the actuator. The actuator is configured to be rotated such that the first end moves from a first location at a first distance from the second end, to a second location at a second distance from the second end. At least a portion of the elongate retention member is disposed at a non-zero distance from an outer surface of the support member when the first end of the elongate retention member is at its second location.