A handpiece structure of an ultrasonic cutter for surgical operation is disclosed. The handpiece structure of the ultrasonic cutting machine for surgical operation according to the present invention is characterized in that a flow path 100 is provided along the outer surface of the blade shaft 10 and an inner flow path 101 is formed in the vicinity of the end, And a blade (12) having a plurality of cooling gas ejection holes (120) extending from the blade shaft (10) and through which the cooling gas flowing out from the inner channel (101) is ejected. The handpiece structure of the ultrasonic cutter for surgical operation according to the present invention can cool the tip generated at the ultrasonic cutting used in the surgical operation using the laparoscope to prevent tip necrosis due to excessive heat contact . Further, the handpiece structure according to the present invention has the effect of securing the field of view around the operation by pushing the tissue next to the blade by the pressure of the cooling gas ejected from the blade.
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