Cement delivery system and method

摘要

The present invention provides a cement delivery system having concentric lumens that terminate in openings at the distal end of the delivery system for providing a selected application of two or more cement types or compositions that vary from the middle of a bone cavity to the circumference of the bone cavity. The invention also provides a method for applying cement into a bone cavity to provide a gradient of materials within the bone cavity from the middle point or center of the bone cavity to the circumference of the cavity.