Mechanically rotary dual-frequency intravascular ultrasonic radiation force elastography probe

Abstract

The invention discloses a mechanically rotary dual-frequency intravascular ultrasonic radiation force elastography probe. Two ultrasonic transducers with different frequencies are used for forming a dual-layer dual-frequency piezoelectric ultrasonic transducer structure, the two ultrasonic transducers are simultaneously connected through a coaxial cable, and the two ultrasonic transducers includea low-frequency piezoelectric ultrasonic transducer and a high-frequency piezoelectric ultrasonic transducer for acquiring intravascular ultrasonic echo imaging and acoustic radiation force pulse imaging. The low-frequency piezoelectric ultrasonic transducer is used for transmitting a high-intensity acoustic radiation force pulse to generate a deformation displacement in vascular tissue, and the high-frequency piezoelectric ultrasonic transducer is used for detecting a micro-deformation displacement and performing echo imaging. The probe disclosed by the invention can simultaneously acquire acoustic radiation force pulse imaging and ultrasonic images. Furthermore, two transducers are adopted without increasing the outline dimension, and only one rotary retraction device is needed at the tail of an intravascular ultrasonic endoscope catheter.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a mechanically rotating dual-frequency intravascular ultrasound radiation force elastography probe. Background technique [0002] Coronary heart disease is one of the main diseases of human death, and its direct cause is the rupture of vulnerable plaques to form thrombus, leading to vascular lumen blockage and myocardial ischemia. Early identification of vulnerable plaques in coronary arteries will help patients to take drug interventions to prevent coronary heart disease, or to reduce the mortality of coronary heart disease through coronary revascularization. [0003] Intravascular ultrasound imaging (IVUS) is the most commonly used imaging method to detect the physiological composition and morphological structure information of coronary plaques, and is known as the new "gold standard" for the diagnosis of coronary heart disease. It can obtain the complete three-layer s...

AI Technical Summary

Problems solved by technology

This technology has been applied to in vitro diagnosis of vulnerable plaques in carotid arteries and other surface arteries, but there is still a lack of acoustic radiation force pulse imaging detection equipment for interventional diagnosis of coronary artery vulnerable plaques

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