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发明公开
CN102119005A 利用阶跃性输出进行切割和凝结的超声装置 有权

利用阶跃性输出进行切割和凝结的超声装置
摘要：
本发明公开的各实施例均涉及用于驱动连接至外科器械中的超声换能器的端部执行器的设备、系统和方法。所述方法包括：通过连接至所述超声驱动系统的发生器产生第一超声驱动信号；在第一周期，利用所述第一超声驱动信号致动所述超声换能器；通过发生器产生第二超声驱动信号；以及在所述第一周期之后的第二周期，利用所述第二超声驱动信号致动所述超声换能器。在对应的第一和第二周期上，所述第一驱动信号不同于所述第二驱动信号。在所述第一和第二周期上，所述第一和第二驱动信号定义阶跃函数波形。所述设备包括被构造为连接至超声器械的发生器。所述系统包括连接至超声器械的发生器。所述超声器械包括超声驱动系统，所述超声驱动系统包括连接至波导的超声换能器和连接至所述波导的端部执行器，其中所述超声驱动系统被构造为以谐振频率谐振。
摘要（英）：

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 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 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 the ultrasonic drive system is configured to resonate at a resonant frequency.

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