Skin microvascular reactivity testing system and method based on local pressure induction

Abstract

The invention discloses a skin microvascular reactivity test system and method based on local pressure induction, and provides a skin microvascular reactivity test system based on local pressure induction, a data acquisition module of the system comprises a pressure stimulation device and a skin blood flow detector, a pressure stimulation part and a blood flow detection part are kept consistent, the influence of other interference factors participating in adjustment is naturally shielded, the blood flow adjustment capacity of skin microvessels is accurately reflected, local pressure stimulation on a target position is achieved through the pressure stimulation device, large stimulation and discomfort caused to a tester can be avoided, and the test accuracy is improved. And inapplicable people such as hypertension and unstable vascular plaque patients do not exist. Under the condition that a tester is prevented from feeling uncomfortable, the blood flow characteristic signals are obtained through testing in the mode that reactive hyperemia is induced through local pressure, then the blood flow adjusting capacity of the skin microvessels can be evaluated, and the method can be widely applied to the technical field of biomedical engineering.

Description

technical field [0001] The invention relates to the technical field of biomedical engineering, in particular to a skin microvascular reactivity test system and method based on partial pressure induction. Background technique [0002] Human blood vessels have the function of actively adjusting the size of the lumen, thereby adjusting blood flow, wall shear force, blood pressure and other hemodynamic characteristics. Studies have shown that in the development of cardiovascular diseases such as atherosclerosis, vascular regulatory dysfunction occurs earlier than vascular structural lesions and plaque formation, and is the earliest stage of cardiovascular diseases that can be detected. Adding the evaluation of vascular regulation function on the basis of traditional risk factors can make a more accurate assessment of the risk of cardiovascular disease in patients. The skin microcirculation is abundant and located in the superficial layer, so it is the easiest place to carry out...

AI Technical Summary

Problems solved by technology

[0004] In the PORH test, the brachial artery is occluded by inflating the cuff. The occlusion time usually lasts about 5 minutes, and the pressure value is generally several tens of mmHg higher than the systolic blood pressure of the tester. High, it will cause discomfort to the tester, such as swelling, numbness, pain, etc.; moreover, some groups of people may have potential health risks, such as patients with high blood pressure or unstable plaques in blood vessels

[0005] In addition, the PORH scheme uses a cuff to pressurize the brachial artery of the upper arm, and detects blood flow changes in the forearm or fingertips. The pressure stimulation site is inconsistent with the blood flow detection site, and the test results include both the regulation of the brachial artery and the peripheral artery. Regulatory influence of microcirculation, therefore less interpretable test results

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