Patent ID: 7510397

Claim:
An apparatus for performing maxillary sinus elevation on an alveolar ridge having a predetermined height comprising: a hollow body forming a sleeve having a top and a bottom with a stop positioned at a predetermined distance from said top corresponding to said height; wherein said bottom includes a connector adapted to be connected to a source of a flowing material; wherein said top is shaped to form with a cutting edge; and wherein said sleeve is formed with a main channel extending longitudinally between said top and said bottom and cross-channels in fluid communication with said main channel; a source of a flowing material connected to said bottom to provide through said channels said flowing material for selectively generating a cavity between said ridge and the subantral membrane for increasing bone mass; a seal element on said hollow body to form a seal with the bony interface when the hollow body is inserted into a hole in the alveolar ridge: an alarm device monitoring a pressure of said material within said sleeve, said alarm device generating an alarm when said pressure falls below a predetermined threshold selected to indicate a breach in the subantral membrane.