Expandable interbody fusion device

US7875078B2 · kind B2 · utility

Assignee

• SPINE WAVE, INC. · US

Inventors

• Steve Wysocki · Stratford, US
• Joseph N. Logan · Trumbull, US
• Richard Manzi · Yorktown Heights, US
• Robert D. Paxson · Twinsburg, US
• John Pafford · Bartlett, US
• Mark D. LoGuidice · Southport, US
• Tyler Lipschultz · New Canaan, US
• Carl Michael Nilsson · Cleveland Heights, US
• Daniel S. Savage · Henderson, US

Key dates

• Filing date: Aug 25, 2005
• Grant date: Jan 25, 2011
• Expiry date: Nov 25, 2029

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2250/0063
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An expandable interbody fusion device for implantation into the intradiscal space between two opposing vertebral bodies of a spine comprises a superior endplate member having an upper surface for engaging a superior vertebral body in a spine, and an inferior endplate member having a lower surface for engaging an inferior vertebral body in the spine. The superior endplate member and the inferior endplate member are releasably coupled and define a cavity therebetween. At least one expansion member is configured to be introduced into the cavity to move the superior endplate and the inferior endplate members relatively apart upon introduction and to thereby decouple the superior endplate member and the inferior endplate member. An inserter may be releasably coupled to the device to facilitate insertion of the device as well as to provide a track for insertion of the expansion members.