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:
Sep. 08, 2009
Filed:
Jul. 07, 2005
Todd James Albert, Narberth, PA (US);
Richard H. Rothman, Philadelphia, PA (US);
Rafail Zubok, Midland Park, NJ (US);
Mikhail Kvitnitsky, Clifton, NJ (US);
Todd James Albert, Narberth, PA (US);
Richard H. Rothman, Philadelphia, PA (US);
Rafail Zubok, Midland Park, NJ (US);
Mikhail Kvitnitsky, Clifton, NJ (US);
Cervical Xpand, LLC, Clifton, NJ (US);
Abstract
A cervical intervertebral stabilizer for a cervical region of a spine includes: a first surface operable to engage an endplate of a first vertebral bone of a spine; a second surface spaced apart from the first surface and operable to engage an endplate of an adjacent second vertebral bone of the spine; a spring element including at least one of: (i) a helical wound spring; and (ii) a hollow body having at least one slit forming a plurality of annular circumferential helical coils, the spring element being disposed between the first and second surfaces and being operable to provide reactive force in response to compression loads from the first and second vertebral bones, wherein at least some diameters of respective turns of the helical coils differ.