Patent ID: 8894652

Claim:
A cavity creation instrument comprising: a cannula having a proximal end and a distal end; and one or more cavity creation elements extendable from the cannula, the one or more cavity creation elements including a superior plate and an inferior plate disposed along a vertical axis, wherein the one or more cavity creation elements include a first low-profile configuration and a second expanded configuration in which the one or more cavity creation elements extend away from a body of the cannula to facilitate excavation of cancellous bone from an interior of a vertebral body and create a cavity, wherein the one or more cavity creation elements are coupled to a rotating expansion screw, wherein when the rotating expansion screw is actuated in a first direction, the one or more cavity creation elements extend away from the body and the superior plate and the inferior plate separate away from one another along the vertical axis and when the rotating expansion screw is actuated in a second direction, the one or more cavity creation elements extend toward the body and the superior plate and the inferior plate move toward one another along the vertical axis.