Ultrasonic probe for collecting arterial pulse signals and lumen internal wall face blood signals in corresponding positions

Abstract

An ultrasonic probe for collecting arterial pulse signals and lumen internal wall face blood signals in corresponding positions comprises a casing (1) with supporting and protecting functions, a parallel piezoelectric patch (3) arranged in the casing (1) and parallel to a probe detection surface (2), an inclined piezoelectric patch (4) arranged at an included angle theta ranging from 30 degrees to 60 degrees with the probe detection surface (2) and an electric cable (5) used for transmitting emitting and receiving signals. During using, the probe is placed on the skin surface (6), the parallel piezoelectric patch (3) emits and receives vertical acoustic beams (7) which are focused to the internal wall face of an arterial blood vessel (9); the inclined piezoelectric patch (4) emits and receives acoustic beams (8) forming an included angle being 90 degrees-theta, and the acoustic beams are focused to the position, close to the blood vessel internal wall face by 0.1-0.5 mm, of an arterial lumen (10). The ultrasonic probe has the advantages of being simple and convenient to operate and high in accuracy; independent vessel wall pulse signals and the blood signals containing the vessel wall pulse information can be detected simultaneously, and the accurate blood vessel wall surface blood speed is obtained through elimination of vessel wall pulse interference of mixed signals.

Description

technical field [0001] The invention relates to an ultrasonic probe for collecting arterial pulsation and corresponding position blood flow signals on the inner wall surface of a tube cavity, belonging to the technical field of biomedical detection. Background technique [0002] Diseases of the circulatory system include lesions of the heart and blood vessels, collectively referred to as cardiovascular diseases, and are generally related to arteriosclerosis. Arteriosclerosis will cause changes in the environment of the inner wall of the blood vessel, resulting in arterial stenosis, which will lead to insufficient blood supply at the far end, and threaten human life in severe cases. With the occurrence and development of arteriosclerosis, the state of blood flow in blood vessels also changes. Vascular stenosis will lead to increased blood flow impedance, reduced blood flow, and reduced blood flow velocity at the distal end of the stenosis, increasing the distribution range a...

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Problems solved by technology

[0003] Through literature search, do not find the public report identical with the technical scheme of the present invention

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