Bone screw

Details Bone screw Bone screw

1996-06-06

1998-04-28

Buiz, Michael

Surgery

Instruments

Orthopedic instrumentation

606 60, 411412, A61B 1786

Patent

active

057439141

ABSTRACT:
A bone screw having a head with a socket for receiving a screw driving device and a shaft extending from the head. The shaft includes respective alternating first and second helical threads running substantially parallel with each other along the shaft. Additionally, the second series of helical threads exhibits a diameter substantially different than the first series of helical threads. In accordance with this aspect of the invention, the thread pattern of the bone screw exhibits a hi-low thread configuration. In addition, the bone screw may comprise a plurality of series of helical threads, each exhibiting different diameters from the others.

REFERENCES:
patent: Re34969 (1995-06-01), Dixon et al.
patent: 1809758 (1931-06-01), Rosenberg
patent: 2263137 (1941-11-01), Oestereicher
patent: 3207023 (1965-09-01), Knohl
patent: 4655661 (1987-04-01), Brandt
patent: 5098435 (1992-03-01), Stednitz et al.
patent: 5294227 (1994-03-01), Forster et al.
patent: 5562672 (1996-10-01), Huebner et al.

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