04573454 is referenced by 317 patents and cites 9 patents.

A surgical implant for fixation of the human spinal column in the treatment of scoliosis, particular in very young children. The device comprises a pair of elongate bars which are rigidly connected together to form a generally rectangular appliance, and wherein the lower portion of the device is slidably connected to the upper portion so that the device is capable of extension and contraction in the longitudinal direction. In the particular embodiment disclosed, the lower fixation element is formed as a pair of sleeves connected together by a cross member with the free end portions of the bars slidably received within the sleeves thereby permitting the aforementioned longitudinal extension. The device is implanted on the posterior side of the spinal column with the bars and sleeves wired to individual vertebrae to thereby stabilize the spinal column and prevent it from reassuming the prior scoliotic curve. The fact the the device is extensible in the longitudinal direction permits the device to extend with the growth of the spine thereby preventing trunk shortening, which is a problem with other appliances used for treatment of scoliosis.

Title
Spinal fixation apparatus
Application Number
6/611475
Publication Number
4573454
Application Date
May 17, 1984
Publication Date
March 4, 1986
Inventor
Gregory A Hoffman
4167 Woodstock Dr., Fort Wayne, 46815
IN, US
Agent
Jeffers Irish & Hoffman
IPC
A61F 5/01
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