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LOW ENERGY OR MINIMUM DISTURBANCE METHOD FOR MEASURING FREQUENCY RESPONSE FUNCTIONS OF ULTRASONIC SURGICAL DEVICES IN DETERMINING OPTIMUM OPERATING POINT
LOW ENERGY OR MINIMUM DISTURBANCE METHOD FOR MEASURING FREQUENCY RESPONSE FUNCTIONS OF ULTRASONIC SURGICAL DEVICES IN DETERMINING OPTIMUM OPERATING POINT
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机译:确定最佳手术点的超声外科设备频率响应功能的低能量或最小扰动方法
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摘要
A method for measuring frequency response is provided that includes supplying ultrasonic energy to an ultrasonic device configured to impart energy to tissue, providing a drive signal and a noise signal, combining the drive signal and the noise signal to create a combined signal, amplifying the combined signal and providing the amplified signal to the ultrasonic device, receiving an output signal from the ultrasonic device and the noise signal, calculating a transfer function estimate based on the output signal and the noise signal, adjusting the drive signal generator based on the calculated transfer function estimate, and determining a phase difference by time aligning the noise signal in the output signal with the noise signal provided.
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