Patent ID: 7771199

Claim:
A method for preparing a surgical sinus-lift osteotomy comprising the steps of: forming a cylindrical pilot hole having a diameter and a longitudinal axis in the maxillary bone in alignment with the sinus floor, taking a tool having a continuous sharp circular cutting edge having a diameter the same as the diameter of the pilot hole and having an axially extending opening and placing said circular cutting edge in the pilot hole in an orientation so that the circular cutting edge lies in a plane perpendicular to the longitudinal axis, while maintaining said orientation, moving the circular cutting edge in a helical motion toward and into engagement with the sinus floor until the sinus floor is cut and cracked, and, while maintaining the circular cutting edge within the pilot hole, delivering sterile fluid through the said axially extending opening at a selected pressure and maintaining the delivered fluid at the selected pressure to release and push the sinus membrane into the sinus cavity.