MECHANICALLY ROTATING INTRAVASCULAR ULTRASOUND PROBE

摘要

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.

主权项

1. 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 channel of a signal transmission system; 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 an ionic liquid having a function of an ultrasonic coupling agent, and an electrical connection between the ionic liquid and the catheter forms a second channel of the signal transmission system.