Patent ID: 8328818
Filing Date: 2012-12-11
Classification: A61B,A61F

Abstract:
1. A device for reducing a vertebral compression fracture, comprising: a superior end plate and an inferior end plate disposed along a vertical axis, the inferior end plate interconnected to the superior end plate such that the superior end plate and the inferior end plate are slidably separable in a vertical direction along the vertical axis; the superior end plate further comprising first arm extensions extending downward therefrom and the inferior end plate further comprising second arm extensions extending upward therefrom, the first and second extensions disposed side by side to permit sliding contact therebetween and allow relative vertical movement while preventing substantial lateral displacement in a direction transverse to the vertical axis, wherein the superior end plate comprises a first surface that extends a length greater than a distance between the first arm extensions, and wherein the inferior end plate comprises a second surface that extends a length greater than a distance between the second arm extensions; an interior chamber defined by the superior and inferior end plates and the first and second arm extensions, the interior chamber in fluid communication with a port extending from an exterior to the interior chamber; wherein the device is deployable within a vertebral body and expandable within the vertebral body by injecting a flowable material into the interior chamber thereby displacing the superior and inferior end plates along the vertical axis, and wherein the superior end plate and the inferior end plate comprise planar surfaces for contacting a vertebral body, wherein the planar surfaces each having perforations to permit a flowable material therethrough.