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US 8,617,217 B2Granted
Polyaxial screw
AssigneeGlobus Medical, Inc.
InventorsAndrew Iott, Andrew Lee, Larry Blader, David C. Paul
Life of this patent
Estimating the term…
Abstract
The present invention generally is directed toward a spinal fixation system whereby a coupling element allows the physician to selectively lock or unlock either the connection between the coupling element and a fastener, such as to allow for repositioning of the coupling element, or the connection between the coupling element and an elongate rod. The locking or unlocking of these connections may be made independently and as desired by the physician.
Claims15
A spine stabilization system comprising:
- an elongate rod;
- a bone fastener having a rounded head;
- a coupling element comprising a coupling body, at least one coupling body component having an upper end and a lower end, and a coupling wedge having an upper end and a lower end;
- wherein the coupling body comprises a sidewall defining a recess that is capable of receiving the fastener, coupling body component, and coupling wedge;
- wherein the coupling body further comprises an inner surface portion at a lower end of the coupling body, the inner surface portion configured with a lip to receive or engage the lower end of the coupling body component;
- wherein the coupling body component of the coupling element may be disposed over the head of the fastener, and wherein the coupling body component has a slit extending along its axial length from the upper end to the lower end, the slit extending from the upper end to the lower end in a non-linear fashion, wherein the upper and lower ends of the coupling body component are configured to engage or receive the tapered lower surface of the coupling body wedge and inner surface portion lip, respectively.
3 more elements
Dependencies are inferred from the claim text.