Spinal Fixation device

Details Spinal Fixation device Spinal Fixation device

1988-09-12

1990-07-31

Hafer, Robert A.

Surgery

Instruments

Orthopedic instrumentation

606 59, 606 60, A61B 1758

Patent

active

049447432

ABSTRACT:
An implantable fixation device comprises a support bar (1) having right-hand threads on the one end and left-hand threads on the opposite end, and having jaw supports (5, 6) threadingly mounted on the respective threaded ends. The jaw supports have secured thereto bolt jaws by means of a respective clamping screw (7), which bolt jaws are (adapted to be) fixed to intact vertebral bodies of the spiral column by means of bone (screw) bolts (13). Further, the bolt jaws are provided with receiving holes (16) permitting the insertion of rod-shaped repositioning instruments (17). By means of this structure, setting of the vertebral elements or segments is possible irrespective of the length of the bone bolts. The repositioning rods (17) can be easily removed; subsequent shortening of the bone bolts (17) is not necessary.

REFERENCES:
patent: 2251209 (1941-07-01), Stader
patent: 4271832 (1981-06-01), Evans et al.
patent: 4475546 (1984-10-01), Patton
patent: 4657550 (1987-04-01), Daher
patent: 4658809 (1987-04-01), Ulrich
patent: 4714076 (1987-12-01), Compte et al.
patent: 4714469 (1987-12-01), Kenna
patent: 4733657 (1988-03-01), Kluger
Bulletin NR 70, Synthes, 4/1986, Robert Mathys Co.

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