Compatible internal bone fixation plate

Details Compatible internal bone fixation plate Compatible internal bone fixation plate

1980-05-09

1983-09-13

Frinks, Ronald L.

Surgery

Truss

Perineal

3 19, 128 92G, A61F 504, A61B 1718

Patent

active

044036078

ABSTRACT:
An internal fixation plate for bridging two portions of a broken bone is formed to have properties in terms of bending, axial, and torsional stiffness suitable for those of the bone being mended. These properties include high resistance to bending and torsional stresses, and relatively low axial stiffness. One plate configuration which has been determined to have the desired stiffness properties is formed from a hollow tube deformed to have an external configuration substantial the same as conventional bone fixation plates. Arrangements are provided for precluding bone ingrowth, and this may be achieved by filling the member with a medically inert substance, such as silicone rubber or ultra high molecular weight polyethylene, or by sealing the openings into the tubular plate. The materials of the bone fixation plate may be selected for their mechanical properties, and also as biologically inert substances which will not have adverse physiological effects when embedded in the human body.

REFERENCES:
patent: 2406832 (1946-09-01), Hardinge
patent: 2614559 (1952-10-01), Livingston
patent: 2821979 (1958-02-01), Cameron
patent: 3893196 (1975-07-01), Hochman
patent: 4040129 (1977-08-01), Steinemann et al.
patent: 4219015 (1980-08-01), Steinemann
patent: 4297993 (1981-11-01), Harle
Vitallium Surgical Appliances (Catalogue), Austenal Company, Division of Howe Sound Company, 1964, p. 16, Marshall Plates (No. 6916).

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