Invention Grant
- Patent Title: Expandable interbody fusion cage with rotational insert
- Patent Title (中): 具有旋转插入件的可扩展的椎间融合器
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Application No.: US12545173Application Date: 2009-08-21
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Publication No.: US08110004B2Publication Date: 2012-02-07
- Inventor: Antonio Valdevit , Vikki Hazelwood , Steven J. Gadol , Frederick H. Hardenbrook , William J. Kowalski , Adrienne G. Quiray , Michael A. Trapani
- Applicant: Antonio Valdevit , Vikki Hazelwood , Steven J. Gadol , Frederick H. Hardenbrook , William J. Kowalski , Adrienne G. Quiray , Michael A. Trapani
- Applicant Address: US NJ Hoboken
- Assignee: The Trustees of the Stevens Institute of Technology
- Current Assignee: The Trustees of the Stevens Institute of Technology
- Current Assignee Address: US NJ Hoboken
- Agency: Greenberg Traurig, LLP
- Main IPC: A61F2/44
- IPC: A61F2/44

Abstract:
An expandable intervertebral fusion cage that includes an inferior baseplate and a superior baseplate, an insert rotatably received between the inferior and superior baseplates, and a guide pin coupled to the inferior and superior baseplates for facilitating the rotation of the insert. The insert includes a pair of protuberances, each of which are releasably engageable with a corresponding lock groove formed within the inferior and superior baseplates. When said insert is rotated relative to the guide pin, the protuberances engage the lock grooves, and the inferior and superior baseplates expand from a collapsed position, in which said inferior and superior baseplates are juxtaposed with one another, and an expanded position, in which said inferior and superior baseplates are diverged away from one another. Tabs formed on the superior baseplate continuously engage slots formed within the inferior baseplate when the baseplates expand from their collapsed position to their expanded position.
Public/Granted literature
- US20100049324A1 EXPANDABLE INTERBODY FUSION CAGE WITH ROTATIONAL INSERT Public/Granted day:2010-02-25
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