Bone screw

Details Bone screw Bone screw

1991-12-17

1993-01-19

Brown, Michael A.

Surgery

Instruments

Orthopedic instrumentation

606 72, 606 73, A61B 1756

Patent

active

051803828

ABSTRACT:
A bone screw (1) has a screw head (2), a screw tip (11), and a shaft (5) with a thread (8,14). The threaded segment (6,7) of the shaft (5) has a head-end, essentially cylindrical first shaft section (6) with minor diameter d.sub.1 (16), and a tip-end second shaft segment (7) that is connected with the first shaft segment (6) and which has a smaller minor diameter d.sub.2 (17). The thread (8,14) in the two shaft segments (6,7) has the same pitch (10,12).

REFERENCES:
patent: 2382019 (1945-08-01), Miller
patent: 3915162 (1975-10-01), Miller
patent: 4175555 (1979-11-01), Herbert
patent: 4456005 (1984-06-01), Lichty
patent: 4463753 (1984-08-01), Gustilo
patent: 4468200 (1984-08-01), Munch
patent: 4537185 (1985-08-01), Stednitz
patent: 4640271 (1987-02-01), Lower
patent: 4723541 (1988-02-01), Reese
patent: 4940467 (1990-07-01), Tronzo
patent: 5019078 (1991-05-01), Perren

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