DYNAMIC/STATIC FACET FIXATION DEVICE AND METHOD

Abstract

A facet fixation system facilitates dynamic or static stabilization with few exposed components. A first anchor component is adapted for implantation through a facet joint and into intra-pedicle bone, and a second anchor component is adapted for fixation to the outer surface of the facet joint. A connector component connects the first and second anchor components. The connector component may be at least partially elastic, facilitating a dynamic stabilization of a facet joint, or rigid, facilitating a static stabilization of a facet joint.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a side-view drawing showing the facet joint in the first stage of a procedure utilizing the instant invention;

FIG. 2 shows the initial introducer removed, leaving elastic cord connected to an implanted anchor;

FIG. 3 illustrates the introduction of a silicone or gliding material sleeve placed over the elastic cord;

FIG. 4 shows a bottom anchor nut and fenestrated grommet being placed over the elastic cord;

FIG. 5 shows the elastic cord in tension, with the nut assembly tightened and crimped;

FIG. 6 shows the removal excess elastic cord, and the placement of a top cover;

FIG. 7 shows a facet joint in neutral position, with the gliding sleeve limiting excessive extension; and

FIG. 8 shows how the elastic cord is stretched during flexion, while limiting excessive motion.

Claims

1. A facet fixation system, comprising: a first anchor component adapted for implantation through a facet joint and into intra-pedicle bone;a second anchor component adapted for fixation to the outer surface of the facet joint; anda connector component connecting the first and second anchor components.

2. The facet fixation system of claim 1, wherein the connector component is at least partially elastic, facilitation a dynamic stabilization of a facet joint.

3. The facet fixation system of claim 1, wherein the connector component is rigid, facilitation a static stabilization of a facet joint.