Design of an ultrasonic scalpel acoustic system

Abstract In order to take into account the high amplification factor of the stepped ultrasonic scalpel horn and the high fatigue strength at the abrupt section of the curve transition horn, an ultrasonic scalpel acoustic composite horn with the most fast curve transition section was proposed, and a series of experiments were carried out on the ultrasonic scalpel acoustic system. Firstly, the equivalent T-type circuit of the ultrasonic scalpel energy transducer was constructed based on the equivalent circuit method. The mathematical model of the transition curve structure was established. On this basis, the structure of energy transducer was designed, and the overall structure and initial size of the ultrasonic transducer was obtained. Secondly, using ANSYS to analyze the modal analysis, harmonic response analysis, transient dynamic analysis and feasibility analysis of the most fast curve of the energy transducer. The simulation results verify the rationality of the theoretical calculation. Finally, the performance of the energy transducer was tested and analyzed by experiments, and the effectiveness of the designed transducer is verified. The results show that the ultrasonic scalpel acoustic system meets the design requirements.