Mechanically rotating intravascular ultrasound probe

A mechanically rotating intravascular ultrasound probe, comprising a catheter, an ultrasonic transducer disposed at a front end of a cavity of the catheter and a driving apparatus that drives the ultrasonic transducer to rotate mechanically, wherein:

• the driving apparatus is a micro motor disposed in the cavity of the catheter, the micro motor comprising a rotor and a stator, and the ultrasonic transducer is fixedly installed on top of the rotor and is driven to rotate by the rotor;
• the ultrasonic transducer is electrically connected to the rotor, and the rotor is also electrically connected to the stator, and electrical connections among the ultrasonic transducer, the rotor and the stator form a first electrical channel for transmitting electrical pulse signals generated by the ultrasonic transducer;
• the catheter is a magnetic metal tube, and the front end thereof is enclosed by an acoustic window which has a spherical tip, and allows ultrasonic waves of the ultrasonic transducer to pass through;
• and
• the acoustic window is filled with ionic liquid having ultrasonic coupling, a second electrical channel includes an electrode of the ultrasonic transducer, the ionic liquid and the catheter that is grounded, the second electrical channel is configured to ground the electrode of the ultrasonic transducer to obtain an electrical shielding effect for the transducer.