The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 07, 2012
Filed:
Aug. 21, 2009
Antonio Valdevit, Effort, PA (US);
Vikki Hazelwood, Wayne, NJ (US);
Steven J. Gadol, Bridgewater, NJ (US);
Frederick H. Hardenbrook, Egg Harbor Township, NJ (US);
William J. Kowalski, Pompton Lakes, NJ (US);
Adrienne G. Quiray, Jersey City, NJ (US);
Michael A. Trapani, Staten Island, NY (US);
Antonio Valdevit, Effort, PA (US);
Vikki Hazelwood, Wayne, NJ (US);
Steven J. Gadol, Bridgewater, NJ (US);
Frederick H. Hardenbrook, Egg Harbor Township, NJ (US);
William J. Kowalski, Pompton Lakes, NJ (US);
Adrienne G. Quiray, Jersey City, NJ (US);
Michael A. Trapani, Staten Island, NY (US);
The Trustees of the Stevens Institute of Technology, Hoboken, NJ (US);
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.