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US 2024/0341968 A1Published application
Expandable evans wedge
AssigneeGlobus Medical, Inc.
InventorRichard Scheinfield
Life of this patent
Estimating the term…
Abstract
Expandable wedge implants and methods. The expandable implant has a main body, a moveable endplate pivotably connected to the main body, an actuator assembly including an actuator and two actuator pivots, and a drive assembly including a drive screw configured to move the actuator assembly to thereby expand the endplate relative to the main body. The expandable implant may be configured to correct pes planus or a flatfoot deformity using an Evans procedure during foot surgery.
Claims15
A method for stabilizing a An expandable implant comprising:
- a main body;
- a moveable endplate pivotably connected to the main body, the endplate defining a pair of ramps;
- an actuator assembly including an actuator and two actuator pivots, each actuator pivot having a ring received on the actuator and a foot with a sliding surface configured to mate with respective ramps on the endplate;
- and
- a drive assembly configured to move the actuator assembly, wherein movement of the drive assembly translates the actuator assembly to expand the endplate away from the main body.
2 more elements
An expandable implant comprising:
- a main body having a front nose, an opposite rear wall, and a pair of sidewalls connecting the front nose to the rear wall defining a central cavity;
- a moveable endplate pivotably connected to the main body, the endplate having an outer surface with a plurality of teeth configured to engage bone and an inner surface defining a pair of ramps;
- an actuator assembly including an actuator having a cylindrical body and two actuator pivots, each actuator pivot having a ring received on the cylindrical body of the actuator and a foot configured to mate with one of the ramps on the endplate;
- and
- a drive assembly including a drive screw, a lock ring, and a retaining ring aligned along a longitudinal axis, wherein the drive screw is threadedly engaged with the actuator, and wherein rotation of the drive screw pulls the actuator, thereby causing the two actuator pivots to slide along the ramps of the endplate to expand the endplate away from the main body.
2 more elements
Dependencies are inferred from the claim text.