Adjustable lordosis anchor and impactor
AssigneeGlobus Medical, Inc.
InventorsMatthew Bakey, Jason Zappacosta
Life of this patent
Estimating the term…
Abstract
Bone anchors, expandable intervertebral fusion devices, systems, instruments, and methods thereof. The anchor may include a spherical head and a curved blade extending therefrom. The spherical head may define a non-threaded opening including a vertical slot in communication with an internal spherical pocket, which interfaces with a corresponding non-threaded tip of a single anchor impactor instrument. The anchor may attach to the instrument via a quarter-turn connection, which provides navigation for straight and angled insertion and/or removal of the anchors.
Claims20
A bone anchor for securing an intervertebral implant comprising:
- a spherical head and a curved blade extending therefrom, the spherical head defining a non-threaded opening including a vertical slot in communication with an internal spherical pocket defined within the spherical head, the vertical slot has a narrow width defined between opposing flat sides with an elongated length longer than the width, the vertical slot being aligned with a longitudinal axis of the anchor, the spherical head includes a raised bump located beneath the vertical slot creating a thickened wall area, the raised bump having a radius smaller than the radius of the spherical head and a width greater than the width of the vertical slot.
A spine stabilization system comprising:
- an expandable implant having an upper endplate, a lower endplate, and an actuator assembly including a moveable anterior actuator, a moveable posterior actuator, and a stationary posterior actuator positioned between the upper and lower endplates to independently control anterior and posterior heights of the implant;
- a bone anchor insertable through the upper or lower endplate and into adjacent bone, the bone anchor having a spherical head and a curved blade extending therefrom, the spherical head defining a non-threaded opening including a vertical slot in communication with an internal spherical pocket defined within the spherical head, the vertical slot has a narrow width defined between opposing flat sides with an elongated length longer than the width, the vertical slot being aligned with a longitudinal axis of the anchor, the spherical head includes a raised bump located beneath the vertical slot creating a thickened wall area, the raised bump having a radius smaller than the radius of the spherical head and a width greater than the width of the slot.
A method of implanting an orthopedic implant comprising:
- inserting an orthopedic implant between adjacent vertebrae, the orthopedic implant comprising a first endplate defining a first socket, a second endplate defining a second socket, and an actuator assembly including a moveable anterior actuator, a moveable posterior actuator, and a stationary posterior actuator positioned between the upper and lower endplates to independently control anterior and posterior heights of the implant;
- expanding the implant to adjust height and/or lordosis;
- attaching a first anchor to a single anchor impactor instrument having a non-threaded distal tip configured to mate with a non-threaded opening in the anchor, the instrument includes an inner shaft positioned through an outer sleeve, the inner shaft includes an elongated tip having curved sides with at least one flat side configured to mate with a corresponding flat side within a vertical slot of the anchor, the outer sleeve includes a distal end with a protruding rim, wherein the first anchor is attached to the instrument by rotating the inner shaft, which rotates the anchor such that the protruding rim of the outer sleeve fits under an overhang along sides of the vertical slot, thereby securing the first anchor to the instrument;
- pivoting the first anchor along an axis of the vertical slot to accommodate a straight or angled trajectory for the first anchor;
- and
- inserting the first anchor into the first socket of the first endplate to engage an upper vertebra.
Dependencies are inferred from the claim text.