#$%^&*AU2020100304A420200402.pdf#####ABSTRACT An ultrasonic osteotome bit is disclosed which comprises a bit bar (1), a bit tip (2), and a liquid injection portion (3). One end of the liquid injection portion (3) 5 is connected to the bit bar (1) and the other end of the liquid injection portion (3) is connected to the bit tip (2). The ultrasonic osteotome bit further comprises a hollow liquid injection channel (10) penetrating from a tail end of the bit bar (1) to the liquid injection portion (3) along an axial direction of the bit bar (1). The liquid injection portion (3) is provided with a transverse liquid guide channel (20) in 10 communication with the hollow liquid injection channel (10). The ultrasonic osteotome bit allows a cooling liquid to sufficiently flow to the bit without being excited or scattered by ultrasonic vibration, thereby cooling the bit tip (2) during use. 15 Fig. 1 for publication1/7 113 1 202 Fig. 1 3 1 31 32 4 2 10 5 20 Fig. 2
