Stationary Wedge Expandable Interbody Device
AssigneeVB Spine US Opco LLC
InventorLiam Patrick Barnes
Life of this patent
Estimating the term…
Abstract
An intervertebral implant includes a chassis and endplates movable relative to the chassis. The endplates are each movable between a contracted position, wherein the endplates are nearer to a central axis defined relative to the chassis, and an expanded position, wherein the endplates are farther from the central axis. The chassis includes at least one wedge that, in turn, includes surfaces along which the endplates travel in transition between the contracted and expanded positions. The wedge remains stationary relative to the central axis throughout transitions between the contracted and expanded positions.
Claims20
An expandable implant positionable in an intervertebral space defined between two vertebrae on opposing sides of the intervertebral space in a superior-inferior dimension, the expandable implant comprising:
- a chassis extending along a central axis parallel to a longitudinal dimension of the expandable implant;
- a first endplate and a second endplate each movably connected to the chassis such that, during expansion of the expandable implant, the first and second endplates move away from the central axis in a first direction along the superior-inferior dimension and the first and second endplates move away from one another along the longitudinal dimension of the implant, the first and second endplates each having a respective abutment surface facing away from the chassis, each abutment surface configured to abut a first one of the two vertebrae.
An expandable implant positionable in an intervertebral space defined between two vertebrae on opposing sides of the intervertebral space in a superior-inferior dimension, the expandable implant comprising:
- a chassis including a first wedge and a second wedge spaced apart from one another at fixed locations along a central axis of the expandable implant;
- a first endplate and a second endplate coupled to the first wedge and the second wedge, respectively, such that, during expansion of the expandable implant, the first endplate moves away from the second endplate along a first surface of the first wedge and the second endplate moves away from the first endplate along a first surface of the second wedge, the first and second endplates each having a respective abutment surface facing away from the respective first and second wedge, each abutment surface configured to abut a first one of the two vertebrae.
Dependencies are inferred from the claim text.