Screw device with threaded head for permitting the coaptation of

Details Screw device with threaded head for permitting the coaptation of Screw device with threaded head for permitting the coaptation of

1997-01-13

1999-12-14

Buiz, Michael

Surgery

Instruments

Orthopedic instrumentation

606 72, A61B 1758

Patent

active

060011017

ABSTRACT:
A screw device for the coaptation of two small bone fragments includes a threaded proximal head part and a threaded distal part, the proximal part having a diameter greater than the distal part and having a thread pitch smaller than that of the distal part. The distal part is threaded over substantially its entire length and a short length smooth portion is provided between the proximal and distal parts. The upper edges of the threads of the two threaded parts are perpendicular to the axis of the thread, while their lower edges are oblique, and each threaded part has at its base at least one tapping notch. An axial channel is provided in the screw for permitting the use of a guide pin.

REFERENCES:
patent: 146023 (1873-12-01), Russell
patent: 2801631 (1957-08-01), Charnley
patent: 4175555 (1979-11-01), Herbert
patent: 4463753 (1984-08-01), Gustilo
patent: 5019079 (1991-05-01), Ross
patent: 5300076 (1994-04-01), Leriche
patent: 5370662 (1994-12-01), Stone et al.
patent: 5411523 (1995-05-01), Goble
patent: 5569248 (1996-10-01), Mathews

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