Distraction device for spinal distraction systems

Details Distraction device for spinal distraction systems Distraction device for spinal distraction systems

1981-03-23

1983-06-07

Apley, Richard J.

Surgery

Truss

Perineal

128 75, A61F 500

Patent

active

043866034

ABSTRACT:
A distractor device is used to apply force to a pair of distraction hooks each positioned between selected pairs of vertebrae. The hooks are components of a spinal distraction system used in the treatment of spinal deformities or fractures. The distractor device includes a threaded rod having a pair of force applying members shiftably mounted on the rod and each engaging one of the distraction hooks. A threaded nut on the rod engages and causes one of the force applying members to be moved away from the other force applying member to exert a distraction force on the distraction hooks. Each force applying member is pivotally mounted on the rod and is also comprised of a pair of pivotally connected elements whereby the pivoting movement between the force applying members and the rod permits positioning and adjustment of the distractor device in confined spaces.

REFERENCES:
patent: 1373230 (1921-03-01), Gainor
patent: 2250417 (1941-07-01), Ettinger
patent: 2391537 (1945-12-01), Anderson

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