Mechanically rotating intravascular ultrasound probe

Abstract

A mechanically rotating intravascular ultrasound probe relates to the technical field of medical devices, and aims to provide a forward-looking mechanically rotating intravascular ultrasound probe having a small volume, a high image resolution and good imaging stability. The intravascular ultrasound probe includes 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. The driving apparatus is a micro motor disposed in the cavity of the catheter, including a rotor and a stator. The ultrasonic transducer is installed on top of the rotor and electrically connected to the rotor, and the rotor is also electrically connected to the stator; the catheter is a magnetic metal tube, and a 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; the acoustic window is filled with an ionic liquid having a function of a ultrasonic coupling agent. The ultrasound probe solves a problem of rotation torsion of an image when the catheter passes through a lesion with high-grade stenosis or a curved blood vessel section, and achieves forward scanning imaging and side scanning imaging for a blood vessel wall.