Giordano, James R.,Beetel, Robert J.,Wiener, Eitan T.,Messerly, Jeffrey D.,Malaviya, Prasanna,Dinardo, Brian,Abbott, Daniel J.
申请号：
AU2015227493
公开号：
AU2015227493A1
申请日:
2015.09.17
申请国别(地区):
AU
年份:
2015
代理人:
摘要：
#$%^&*AU2015227493A120151008.pdf#####ABSTRACT Various embodiments are directed to an apparatus, system, and method for driving an end effector coupled to an ultrasonic transducer in a surgical instrument. The method comprises 5 generating a first ultrasonic drive signal by a generator coupled to an ultrasonic drive system, actuating the ultrasonic transducer with the first ultrasonic drive signal for a first period, generating a second ultrasonic drive signal by the generator, and actuating the ultrasonic transducer with the second ultrasonic drive signal for a second period, subsequent to the first period. The first drive signal is different from the second drive signal over the respective first 10 and second periods. The first and second drive signals define a step function waveform over the first and second periods. The apparatus comprises a generator configured to couple to an ultrasonic instrument. The system comprises a generator coupled to an ultrasonic instrument. The ultrasonic instrument comprises an ultrasonic drive system comprising an ultrasonic transducer coupled to a waveguide and an end effector coupled to the waveguide, and wherein 15 the ultrasonic drive system is configured to resonate at a resonant frequency.
