Bone screw

Details Bone screw Bone screw

1988-01-21

1989-08-08

Hafer, Robert A.

Surgery

Truss

Perineal

128 92Y, 128 92YV, 411414, A61B 1758

Patent

active

048543110

ABSTRACT:
A bone screw for use with a connecting member for connecting a bone portion with the connecting member. The bone screw includes an elongate shank having a longitudinal central axis. A first externally threaded portion receives a nut for attaching the connecting member to the bone screw. A second externally threaded portion engages a surface defining an opening in the bone portion to attach the bone screw to the bone portion. A cylindrical body portion is located on the shank intermediate the first and second externally threaded portions. The body portion engages a portion of the surface defining the opening in the bone portion to restrict movement of the bone screw relative to the bone portion in a direction transverse to the longitudinal cental axis of the shank. The body portion blocks effluent from the opening in the one bone portion. A seat portion having a surface located on the body portion adjacent the first externally threaded portion engages the connecting member to establish the axial location of the connecting member along the bone screw.

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patent: 4655199 (1987-04-01), Stefee
Journal of Bone & Joint Surgery, 1934, pp. 168-172.
Journal of Bone & Joint Surgery, vol. 18, 1936, p. 409.
American Journal of Surgery, vol. 37, #1, 1937, pp. 79-87.
Zimmer News Release, 8/1966.
Surgical Equipment, vol. 7, No. 4, 1940, pp. 14-15.
Vitallium Surgical Appliances, 1948, p. 16.

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