Multi-mode mechanical rotation type multifrequency IVUS (intravascular ultrasound) imaging probe
An ultrasonic imaging and rotary technology, applied in the field of medical devices, can solve the problems of inaccurate judgment and inaccurate evaluation of "plaque progress", and achieve the effect of improving timeliness and accuracy
Inactive Publication Date: 2019-09-27
TIANJIN UNIV
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Problems solved by technology
Although IVUS technology has been widely used clinically, at present, this technology cannot accurately judge the fibrous cap and part of the lipid core of vulnerable plaques, nor can it accurately evaluate "plaque progression"
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[0026] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0027] Such as figure 1 As shown, the multi-mode mechanically rotating multi-frequency intravascular ultrasonic imaging probe 1 (hereinafter referred to as the ultrasonic imaging probe) of the present invention is the front end part of the intravascular ultrasonic endoscopic catheter, and has a housing 1a, a multi-frequency piezoelectric ultrasonic sensor 2 And the protective tube 3, the outer casing 1a is a hollow cylindrical structure of copper or other metal materials, and has an opening for placing the multi-frequency piezoelectric ultrasonic sensor 2.
[0028] Specifically, the multi-frequency piezoelectric ultrasonic sensor 2 is composed of a high-frequency sensor 2a and a set ...
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Abstract
The invention discloses a multi-mode mechanical rotation type multifrequency IVUS (intravascular ultrasound) imaging probe. Three ultrasonic transducers with multiple frequencies are constituted into a three-layer multi-frequency piezoelectric ultrasonic transducer structure, the three ultrasonic transducers are connected simultaneously through a coaxial cable and comprise one group of low-frequency piezoelectric ultrasonic transducers formed by two low-frequency piezoelectric ultrasonic transducers and one high-frequency piezoelectric ultrasonic transducer; the two low-frequency piezoelectric ultrasonic transducers are stacked and work simultaneously to stimulate a contrast medium at a lower frequency to produce harmonic signals or work separately to send high-strength acoustic radiation force impulse at a higher frequency to produce deformation displacement in blood vessel tissue; the high-frequency piezoelectric ultrasonic transducer detects tiny deformation displacement, acquires higher harmonic signals and performs echo-planar imaging. The probe can acquire IVUS echo-planar imaging, acoustic radiation force impulse imaging and ultrasonic ultra-high-order harmonic contrast imaging simultaneously.
Description
technical field [0001] The invention relates to the technical field of medical devices, in particular to a multi-mode mechanically rotating multi-frequency intravascular ultrasonic imaging probe. Background technique [0002] Coronary heart disease is one of the major diseases of human death. Accurate assessment of the "plaque progression" (from plaque formation to rupture or erosion) of vulnerable plaques can help prevent coronary heart disease and reduce mortality, and is an important task in the prevention and treatment of coronary heart disease. [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 structure information of the blood vessel through the intensity signal, and rely on the echo signal intensity informat...
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Login to View More IPC IPC(8): A61B8/08A61B8/12
CPCA61B8/0891A61B8/12A61B8/4444A61B8/4483
Inventor 王茁晨
Owner TIANJIN UNIV