Application Cases

xperiment Name: Ultrasonic Vibration Bone Scalpel Cutting Test

Research Direction: Traditional bone scalpels struggle to meet the requirements of orthopedic surgeries for high precision, high efficiency, and low trauma. The ultrasonic vibration bone scalpel is a novel treatment tool that applies ultrasonic vibration to the scalpel tip. It offers advantages such as high cutting precision, high efficiency, and tissue-selective cutting, while also effectively reducing damage to bone, blood vessels, and nerve tissues, thereby aiding in postoperative wound healing and recovery. Addressing the limitations of current clinical traditional bone scalpels, this study proposes a design for an ultrasonic vibration bone scalpel and conducts experimental research on its vibration characteristics and cutting mechanism. The goal is to develop an ultrasonic vibration bone scalpel for clinical medical use. By adjusting parameters like the operating voltage of the ultrasonic bone scalpel, the vibration amplitude of the scalpel tip can be regulated. When the scalpel tip interacts with bone, the high-frequency vibrational impact enables bone cutting. The use of the ultrasonic vibration bone scalpel can effectively avoid cutting into soft tissues like nerves and blood vessels, significantly enhancing surgical safety. Even if the surgeon inadvertently contacts a blood vessel during the procedure, the ultrasonic bone scalpel will not cut the vessel, nor will it turn the surgical site into a bloody mess, thus avoiding any impact on the normal progress or speed of the surgery.

Experiment Purpose: Adjust the output power of the power amplifier and measure the ultrasonic amplitude under different ultrasonic power levels using a laser vibrometer, laying the groundwork for subsequent experiments.

Test Equipment: High-voltage power amplifier, Signal generator, Oscilloscope, Ultrasonic bone scalpel, Laser vibrometer, etc.

Experimental Process: The signal generator produces a high-frequency ultrasonic excitation signal to drive the ultrasonic vibration bone scalpel device. The ATA-4052C high-voltage power amplifier amplifies this excitation signal and outputs it to the ultrasonic bone scalpel. An oscilloscope is used to monitor the output frequency and waveform of the power amplifier, allowing for real-time adjustment of the amplifier's output signal to ensure the ultrasonic vibration bone scalpel device consistently operates at resonance. By adjusting the output power of the power amplifier and using a laser vibrometer, the ultrasonic amplitude corresponding to different ultrasonic power levels is measured. The experimental schematic is shown in Figure 1-1.

Figure 1-1: Schematic diagram of the ultrasonic vibration bone scalpel cutting test setup

Experimental Results: The ultrasonic amplitudes measured by the laser vibrometer at different ultrasonic power levels are shown in Figure 1-2. It can be observed from Figure 1-2 that as the output power of the power amplifier increases, the output amplitude of the ultrasonic vibration bone scalpel also increases. This increase in amplitude shows an approximately linear relationship with the increase in output power. The amplitude reaches its maximum when the ultrasonic generator's output power is at 100%. The rise in amplitude is relatively gentle when the ultrasonic generator's output power is between 40% and 60%.

Figure 1-2: Output amplitude of the ultrasonic vibration bone scalpel under different ultrasonic power levels

Amplifier Performance in this Experiment: Power Amplifier

Reasons for Selecting this Power Amplifier: Low distortion, high voltage accuracy, high bandwidth, excellent output waveform quality, simple operation, convenient adjustment, low output impedance, and the ability to achieve a signal-to-noise ratio of 80 dB.

Power Amplifier Recommendation: ATA-4052C

Figure: ATA-4052C High-Voltage Power Amplifier Specifications

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