Invention Grant
US08569925B2 Low energy or minimum disturbance method for measuring frequency response functions of ultrasonic surgical devices in determining optimum operating point
有权
用于测量超声外科手术器械的频率响应功能的低能量或最小扰动方法，用于确定最佳工作点
- Patent Title: Low energy or minimum disturbance method for measuring frequency response functions of ultrasonic surgical devices in determining optimum operating point
- Patent Title (中): 用于测量超声外科手术器械的频率响应功能的低能量或最小扰动方法，用于确定最佳工作点
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Application No.: US13784257Application Date: 2013-03-04
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Publication No.: US08569925B2Publication Date: 2013-10-29
- Inventor: James A. Gilbert
- Applicant: Covidien LP
- Applicant Address: US MA Mansfield
- Assignee: Covidien LP
- Current Assignee: Covidien LP
- Current Assignee Address: US MA Mansfield
- Main IPC: H01L41/08
- IPC: H01L41/08
Abstract:
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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