Multiple spindle adjustable interbody fusion devices and methods of use

US11793653B2 · 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: Aug 17, 2021
• Grant date: Oct 24, 2023
• Expiry date: Dec 18, 2041

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 base member, wherein the expansion mechanism comprises at least one expansion assembly for moving an end of the superior member relative to the bottom member.