#$%^&*AU2020100622A420200604.pdf#####ABSTRACT: An ultrasonic osteotome bit is disclosed, comprising a bit bar (1), a bit body (3), and a bit grinding portion (2) located at a front end of the ultrasonic osteotome 5 bit. The bit grinding portion (2) is in the shape of a triangular pyramid, and a bottom face of the triangular pyramid forms a rear end of the bit grinding portion (2), and a tip of the triangular pyramid forms a front end of the bit grinding portion (2). One end of the bit bar (1) is connected to the rear end of the bit grinding portion (2), and the other end of the bit bar (1) is connected to the bit body (3). 10 Two of the three lateral pyramidal faces are respectively used as a first grinding face (21A) and a second grinding face (21B). A bone-grinding operation can be performed with the osteotome bit, and since the front end thereof is small in area, the grinding speed is high. Owing to the design having a small front end and a large rear end, a good visual field can be provided and a surgeon can be confident 15 that bone grooves at a hinge side after grinding, form fully closed V-shaped grooves at any operating angle. Fig. 3 for publication2/8 2 ft21 1A )21A 22 21 B / 5 y-~t 2 ~ 24 Fig.34
