Ultrasound device for facilitating waste clearance of the brain lymphatic system

An ultrasound device for facilitating lymphatic waste clearance of a brain lymphatic system, comprising:

• a first frequency-generator generating a first frequency that is of an ultrasound waveform in a band of 100 KHz to 200 KHz;
• a first waveform modulator modulating the waveform of the first frequency;
• a first linear amplifier amplifying the waveform of the first frequency;
• a first resonance circuit portion matching impedance of the amplified waveform of the first frequency;
• and
• a first ultrasound transducer coupled to the first resonance circuit portion and irradiating ultrasound toward a brain of mammals,
• wherein the ultrasound facilitates the lymphatic waste clearance of the brain.