Patent ID: 8246627

Claim:
A device for injecting cement into tissue, said device comprising: an access cannula having a lumen that extends along a longitudinal axis of said access cannula, opposed proximal and distal ends, and a discharge port that opens from said lumen adjacent the distal end of said access cannula; a stylet removably positioned within said access cannula lumen, said stylet having opposed proximal and distal ends, said stylet dimensioned so that when said stylet is in said access cannula lumen, said distal end of said stylet at least partially blocks said access cannula discharge port; a fitting adjacent the proximal end of said access cannula for receiving a delivery device from which cement is injected into the access cannula lumen for discharge through the discharge port; a blade movably attached to the distal end of said access cannula so as to move between a retracted position in which said blade is proximal to the longitudinal axis of said access cannula and an extended position in which said blade extends from the longitudinal axis of said access cannula; a drive member that extends through said access cannula, said drive member being movable within said access cannula and connected to said blade for moving said blade between the retracted and extended positions; an actuator movably mounted to said access cannula and attached to said drive member for moving said drive member; and a tip that extends forward from said distal end of said access cannula, said tip configured to penetrate tissue.