Spinal fixation device
AssigneeK2M, Inc.
InventorsShyam Kishan, Michael Barrus
Life of this patent
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Abstract
A spinal fixation device includes an inner housing, an outer housing, a screw, and a pivot inhibitor. The outer housing is circumferentially disposed around at least a portion of the inner housing, wherein the outer and inner housings are translatable relative to one another to cause transitioning of the spinal fixation device between a locked configuration and an unlocked configuration. The screw including a screw head pivotably coupled to a lower portion of the inner housing and a shaft extending from the screw head. The pivot inhibitor is coupled to one of the inner housing or screw, such that pivoting of the inner housing about the screw head is inhibited in a direction of the pivot inhibitor.
Claims18
A spinal fixation device comprising:
- an inner housing;
- an outer housing circumferentially disposed around at least a portion of the inner housing, wherein the outer and inner housings are translatable relative to one another to transition the spinal fixation device between a locked configuration and an unlocked configuration;
- a screw including a screw head pivotably coupled to a lower portion of the inner housing and a shaft extending from the screw head, the screw including a neck disposed between the screw head and the shaft;
- and
- a pivot inhibitor disposed along an outer surface of the neck of the screw, such that pivoting of the screw relative to the inner housing is inhibited in a direction of the pivot inhibitor past a central longitudinal axis defined by the inner housing.
Dependencies are inferred from the claim text.