Integrated cement delivery system for bone augmentation procedures and methods

A bone cement delivery system for vertebroplasty comprising a rigid cannula having:

• a tubular inner wall defining and surrounding a central conduit to deliver bone cement into a vertebra under pressure, the inner wall defining a distal outlet port of the central conduit at a distal end of the cannula;
• a tubular outer wall extending around the inner wall and spaced apart therefrom to define a peripheral conduit around the central conduit for aspirating bone fluids, the outer wall defining a plurality of fenestrations defined at the distal end, the outer wall defining a distal inlet port of the peripheral conduit at the distal end of the cannula;
• the outer wall having an outer diameter not exceeding acceptable parameters for vertebroplasty;
• a proximal end of the cannula including a proximal inlet port in communication with the central conduit and a proximal outlet port in communication with the peripheral conduit;
• a vacuum pump communicating with the proximal outlet port of the peripheral conduit to create a pressure gradient between the central conduit and the peripheral conduit to provide a hydraulic force guiding the displacement of bone fluid and the flow of cement;
• a source of bone cement delivering bone cement to the proximal inlet port;
• and
• a helical thread defining a screw delivery mechanism in the central conduit extending from the proximal inlet port to the distal outlet port.