Unilateral external fixation device

Details Unilateral external fixation device Unilateral external fixation device

1987-11-19

1990-01-23

Hafer, Robert A.

Surgery

Instruments

Orthopedic instrumentation

606 59, 606 57, A61F 504

Patent

active

048951412

ABSTRACT:
A unilateral external fixation device comprises a distal frame and a proximal frame interconnected by a hinge formed of mating, partially spherical-shaped surfaces which permits relative movement of the distal frame and proximal frame. Each of the frames includes one or more pin clamps which mount half pins inserted with the proximal or distal segments of a fractured bone to immobilize the bone segments and permit reduction of the fracture. The focal point of the partially spherical-shaped surfaces of the hinge is positioned in direct alignment with the fracture, preferably in a vertical plane passing through the fracture transverse to the longitudinal axis of the bone, so that manipulation of one or both of the distal and proximal frames permits a relatively slight and precise movement of the bone segments connected thereto by the half pins to ensure proper reduction of the fracture.

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Howmedica, Inc. brochure, "The External Fixation System", pp. 1-32.
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Thackray Brochure, "Shearer External Fixation System", pp. 1-9.

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