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US 2026/0294491 A1Published application
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 single anchor impactor instrument system comprising:
- an 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 flat sides forming an overhang with respect to the internal spherical pocket;
- and
- an instrument having a non-threaded distal tip configured to mate with the non-threaded opening in the anchor, the instrument includes an inner shaft positionable through an outer sleeve, the inner shaft includes an elongated tip with a truncated distal-most end, the elongated tip has curved sides with at least one flat side configured to mate with one of the flat sides of the vertical slot when inserted therein, the outer sleeve includes a distal end with a protruding rim,
- wherein when the inner shaft rotates the anchor, the protruding rim of the outer sleeve fits under the overhang along the sides of the vertical slot, thereby securing the anchor to the instrument.
1 more element
A single anchor impactor instrument system comprising:
- an 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;
- and
- an instrument having a non-threaded distal tip configured to mate with the non-threaded opening in the anchor, the instrument includes an inner shaft configured to rotate relative to a stationary outer sleeve, the inner shaft has a rear housing and a central shaft extending therethrough, the central shaft retains a shuttle and multiple washers, the outer sleeve has a housing and a tubular body for receiving the inner shaft therethrough, and a lever is pivotably connected to the central shaft and the rear housing of the inner shaft, wherein the shuttle and washers are configured to slide axially over the central shaft when the lever is actuated and the central shaft is moved axially,
- wherein the instrument is configured to function in three positions:
- (a) in a first position, the instrument is ready for attachment to the anchor by extending the lever outward such that the non-threaded distal tip is oriented to fit into the vertical slot of the non-threaded opening;
- (b) in a second position, the anchor is attached to the instrument in an unlocked position by rotating the inner shaft and lever 90 degrees relative to the first position to secure the non-threaded distal tip to the non-threaded opening in the anchor while permitting angulation of the anchor along an axis of the vertical slot;
- and
- (c) in a third position, the anchor is locked to the instrument by pivoting the lever flush against the outer sleeve, which pulls back the central shaft, pushes the shuttle forward, compresses the washers, and keeps tension on the central shaft to hold the anchor tight against the non-threaded distal tip of the instrument.
5 more elements
A single anchor impactor instrument comprising:
- an inner shaft and outer sleeve aligned along an instrument axis, the inner shaft having a rear housing and a central shaft extending therethrough, the central shaft retains a shuttle and multiple washers, the outer sleeve having a housing and a tubular body for receiving the inner shaft therethrough,
- a lever for locking an anchor to the instrument, the lever being pivotably connected to the central shaft and the rear housing of the inner shaft by a lever pin, wherein the shuttle and washers are configured to slide axially over the central shaft when the lever is actuated and the central shaft is moved axially;
- and
- a ball detent within the rear housing of the inner shaft configured to engage with divots within the housing of the outer sleeve such that the inner shaft is held in one of two relative positions when rotated with respect to the outer sleeve.
1 more element
Dependencies are inferred from the claim text.