| 摘要 |
FIELD: medical engineering. ^ SUBSTANCE: device has ultrasonic surgical instrument manufactured as staged ampoule-type concentrator which cylindrical part of greater diameter is coupled with the ampoule-type part by means of a stage, is resonator fixed in sealed casing and has at least one electromechanical element of piezoelectric type with contact surfaces connected to power supply generator. The electromechanical element is mounted on the resonator end located oppositely with respect to the stage. The resonator is fixed in sealed casing by means of axial compression on the casing part. The force applied between the stage and outer contact surface of electromechanical element is equal to a=(0,35-0.65)lambda, where lambda is the wavelength of longitudinal elastic resonator displacement coincident wave. ^ EFFECT: reduced device weight; high surgical instrument fatigue strength. ^ 2 cl, 1 dwg |
