Method and clasp for internal osseous fixation

Details Method and clasp for internal osseous fixation Method and clasp for internal osseous fixation

1974-09-09

1976-02-24

Yasko, J. D.

Surgery

Truss

Perineal

128334R, A61F 504

Patent

active

039398285

ABSTRACT:
A clasp formed of spring material is Z-shaped in top plan and in side elevation shows two legs which converge downwardly at about a 15.degree. angle, one leg depending from each end of the Z. In end elevation the legs are perpendicular to the horizontal portion of the clasp. To install the clasp, bone segments are manually or mechanically manipulated to desired position. A hole is drilled on each side of the osteotomy equidistant therefrom at an angle of about 15.degree. from the perpendicular, and converging toward the osteotomy preferably using a template which determines hole locations, dependent on the size of clasp selected. One leg of the clasp is inserted in one hole. The other leg is pulled toward the other hole, preferably using an instrument with a hook-like extremity. As the second leg is pulled into position the clasp is stressed, the Z shape spreading apart; and after the clasp is fully installed, the resiliency of the clasp applies a continuous force compressing the bone segments with a constant force and immobilizing same.

REFERENCES:
patent: 2898741 (1959-08-01), Milliken
patent: 3807394 (1974-04-01), Attenborough

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