Anterior cervical vertebral stabilizing device

Details Anterior cervical vertebral stabilizing device Anterior cervical vertebral stabilizing device

1998-07-10

1999-05-18

Buiz, Michael

Surgery

Instruments

Orthopedic instrumentation

606 69, 606 73, A61B17/58

Patent

active

059046830

ABSTRACT:
An implantable device for affixing to the anterior side of cervical vertebrae for stabilizing the cervical vertebral column. A plate has an anterior surface and a posterior surface and a plurality of through holes open at the anterior surface and at the posterior surface. Each hole has an anterior portion having a first diameter and a posterior portion having a second diameter. The second diameter is smaller than the first diameter, and the anterior portion of the hole is internally threaded. A bone screw has a threaded shank having a major diameter smaller than the second diameter of the through hole of the plate. The bone screw also has a head having a major diameter greater than the second diameter of the through hole of the plate and smaller than the first diameter of the hole of the plate. A locking cap has an exterior thread and is sized to be threadedly received within the anterior portion of the through hole of the plate while the head of the bone screw is disposed within the through hole. The locking cap is provided for engaging and frictionally locking the head of the bone screw to the plate.

REFERENCES:
patent: 5300074 (1994-04-01), Frigg
patent: 5676666 (1997-10-01), Oxland et al.
patent: 5709686 (1998-01-01), Talos et al.
patent: 5713900 (1998-02-01), Benzel et al.
patent: 5810822 (1998-09-01), Mortier

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