Device for straightening, securing, compressing and elongating t

Details Device for straightening, securing, compressing and elongating t Device for straightening, securing, compressing and elongating t

1992-08-25

1993-11-16

Hafer, Robert A.

Surgery

Instruments

Orthopedic instrumentation

403290, A61F 501

Patent

active

052619133

ABSTRACT:
The invention relates to a process and device for securing, elongating and compressing a spinal column, of simple design, which is easy and precise in use, leaving no projecting part. The process of the invention for straightening and supporting a spinal column consists in securing screwed implants (10) or hooks on either side of the curvature of the spin and interlinking them by at least two rods (20,21) designed to act as struts; said rods (20,21) are introduced longitudinally into grooves (113) perpendicular to the screw (120) fitted in the body (110) of the implants (10) or hooks and then fixed in the base of the grooves (113) by crimping resulting from the deformation of the sides of the groove (113) by the closing of its sides; said deformation is obtained via a conically-threaded nut (30) and a cylindrical male thread cut around the body (110) of the implants (10). Application: straightening and supporting the spinal column in the event of scoliosis or fracture, for example.

REFERENCES:
patent: 3019504 (1962-02-01), Castaglivolo
patent: 3752203 (1973-08-01), Hill
patent: 4011602 (1977-05-01), Rybicki
patent: 4289124 (1981-08-01), Zickel
patent: 4411259 (1983-10-01), Drummond
patent: 4833342 (1892-09-01), Bolte
patent: 4950269 (1990-08-01), Gaines, Jr.
patent: 5005562 (1991-04-01), Cotrel
patent: 9007717 (1908-10-01), Feaster

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