Ultrasonic catheter and treatment device using same

The invention discloses an ultrasonic catheter and a treatment device using the same, the ultrasonic catheter comprises a coil body, a catheter body and an ultrasonic transducer, the ultrasonic transducer is fixed on the catheter body, and a support structure is fixed on the catheter body; the radio frequency Balun is used for achieving the optimal common-mode rejection effect, the supporting structure supports the radio frequency coil, the radio frequency coil is closer to the target area, the imaging signal-to-noise ratio is higher, the radio frequency coil is physically integrated with the ablation component, linkage is more convenient, and positioning operation is simpler and more accurate; ultrasonic energy is delivered through an ultrasonic catheter in a human body and is monitored through an MRI (Magnetic Resonance Imaging) system, and the treatment device comprises an ultrasonic transducer used for treating and transmitting the ultrasonic energy, an MRI radio frequency coil used for detecting signals