Multiple spindle adjustable interbody fusion devices and methods of use

US10117755B2 · kind B2 · utility

Assignee

• BIOSPINE, LLC · US

Inventors

• Brian G. Emerick · Columbia City, US
• Ross R. Nichols · North Webster, US
• Daniel Refai · Atlanta, US
• Heidi Stamets · Monroeville, US
• Larry D. Sutton · Fairfield, US
• Brent Walter · Huntington, US

Key dates

• Filing date: Mar 15, 2013
• Grant date: Nov 6, 2018
• Expiry date: Dec 18, 2034

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2310/00359
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An interbody fusion device includes a base member, a top member, and an expansion mechanism for moving the top member relative to the base member. The expansion mechanism may include a connector drive rod assembly, a gear, a threaded rod, and a support means. The gear ring is coupled to the threaded rod and is rotatable. The expansion mechanism may also include at least one load head coupled to the threaded rod. An alternative interbody fusion device is also disclosed and includes a bottom member, a superior member, and an expansion mechanism for moving the superior member relative to the bottom member. The expansion mechanism includes a first expansion assembly for moving a first end of the superior member relative to the bottom member, a second expansion assembly for moving a second end of the superior member relative to the bottom member, and a connector drive rod assembly.