Patent ID: 6451057
Filing Date: 2002-09-17
Classification: A61F

Abstract:
A spinal plate element adjusting device having a threaded engagement for implantation between a pair of vertebrae, comprising:a longitudinally extended body formed by a hollow cylindrical body, said body having an outer wall surface formed with a threaded portion of predetermined length at a distal end thereof, said body having a fixing portion formed in a proximal end thereof, said threaded portion being divided into a plurality of sections by a plurality of longitudinally directed slits, said distal end having an internal thread formed therein; and a pushing member coupled to said distal end of said body and having a frustro-conical contour to define a predetermined taper of an outer wall surface thereof, said pushing member having a groove formed in a proximal end thereof for receiving an end of a tool therein, said pushing member having an external thread formed in said outer wall surface thereof, said external thread of said pushing member being threadedly engaged with said internal thread of said distal end of said body, wherein the tool releasably engages said fixing portion for rotating said body to threadedly engage said body between a pair of vertebrae, the tool rotating said pushing member relative to said body to longitudinally displace said pushing member toward said proximal end of said body and thereby outwardly expand said plurality of sections of said body.