Abstract: Method for lifting a sinus membrane located between a sinus and a maxilla that involves the drilling of a hole of a given diameter in the maxilla reaching the sinus membrane, and includes introducing in the hole an ultrasonic tip having a distal part including a ring-shaped part of increasing cross-section and a distal end formed by a flat area extending generally perpendicular to the longitudinal axis of the distal part. The flat area of the distal part has a distal side facing away from the proximal part and is bordered by a rounding, the ring shaped part being larger than the body of the tip but closely corresponding to the diameter of the hole. The tip includes an internal irrigation channel emerging on the distal side of the flat area. While the tip is within the hole, the tip is advanced towards the membrane while ultrasound vibrations are fed to the tip and irrigation fluid is supplied to the internal irrigation channel.

Abstract: An ultrasonic tip (100) for sinus membrane elevation has a body (101), extending between a proximal part (102) adapted for mechanic coupling to a surgical handpiece generating ultrasound vibrations and a distal part (103) intended to reproduce the ultrasound vibrations transmitted by the handpiece. The distal part (103) of the tip comprises a ring-shaped part (106) of increasing cross-section with an end formed by a flat area (107) more or less perpendicular to the axis (106a) of the aforesaid ring-shaped part. The tip (100) further includes an internal irrigation channel (105) emerging on said flat area (107).