Optical fiber type continuous detection blood pressure sensor and wearable device thereof

Abstract

The invention relates to the technical field of blood pressure detection, and provides an optical fiber type continuous detection blood pressure sensor. The blood pressure sensor comprises a sensing strap, wherein the sensing strap comprises an inner layer and an outer layer; an accommodating space is formed between the inner layer and the outer layer; an optical fiber is arranged in the accommodating space; a signal processor is arranged at one end of the sensing strap; the signal processor communicates with and is connected to the optical fiber; and an elastic layer covers the outer surface of the sensing strap. The sensing strap is soft and can be coiled into a ring; the optical fiber is arranged along the sensing strap in an extending mode, so that a ring-strap shaped sensing region is formed, and the elastic layer covers the outer surface of the sensing strap; the sensing strap is firmly worn in the region, where radial artery locates, of the wrist of a human body; when the blood pressure sensor is used for detecting blood pressure, pulse waves can be sensed by the sensing region even if the sensing strap rotates or dislocates due to free activities of the human body, the sensing strap, when worn, is unnecessary to be especially located, and blood pressure of the human body can be continuously detected within 24h in a noninvasive mode; therefore, the blood pressure sensor has the characteristics of being high in stability and accuracy. The invention also provides a wearable device, wherein the wearable device comprises the optical fiber type continuous detection blood pressure sensor.

Description

technical field [0001] The invention belongs to the technical field of blood pressure detection, in particular to an optical fiber type continuous detection blood pressure sensor and a wearable device thereof. Background technique [0002] At present, the detection of blood pressure generally adopts a non-invasive detection method, and the non-invasive detection mainly includes auscultation method (Krotkoff sound method) and oscillation method (oscillometric method). The principle of auscultation is to collect Korotkoff sounds. The entire device consists of an inflatable and deflated cuff, a mercury manometer, and a stethoscope. The principle of the oscillation method is to use the oscillometric principle of the pulse waveform to determine the systolic and diastolic blood pressure, which is the method adopted by most non-invasive automatic sphygmomanometers at home and abroad. [0003] But because these two kinds of methods all need to carry out inflation and deflation to ...

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Problems solved by technology

[0008] The purpose of the present invention is to provide an optical fiber type continuous detection blood pressure sensor, which aims to solve the existing problems in the existing blood pressure detection methods, such as complex structure, inconvenience to carry, damage to the subject's skin, causing discomfort to the subject, inability of the subject to move freely, The problem of inaccurate positioning and the inability to perform long-term and continuous detection

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