Pressure-applying pulse wave collecting device

Abstract

The invention discloses a non-invasive pressure-applying human body pulse information collecting device, in particular to a pulse wave collecting device based on a stepping motor, a pressure sensor and a flexible coupling pipeline. By integrating the high-precision stepping motor, the high-performance pressure sensor, the flexible pipeline with excellent coupling property with human skin and a control and data processing circuit, the device solves the problems that a prior pulse wave collecting device has low collecting precision and cannot be tightly attached to an arm. The device mainly comprises a shell with a sleeve, wherein a support plate is arranged in the shell; the stepping motor is fixed on the support plate; the bottom of the stepping motor is contacted with the surface of the flexible pipeline; a seam is formed in the bottom of the shell; the flexible pipeline is clamped in the seam; physiological saline is filled in the flexible pipeline; a pressure sensor probe is sealedin the flexible pipeline; an collecting and storing control circuit is fixed in the shell; and the collecting and storing control circuit comprises a collecting module, an amplification module, a maincontrol module and a storing module. Collected signals are connected to an upper computer through a USB for real-time waveform display and storage.

Description

technical field [0001] The invention belongs to the technical field of medical electronic instruments, and relates to a non-invasive pressure-applying human pulse information collection device, in particular to a pulse wave collection device based on a stepping motor, a pressure sensor and a flexible coupling tube. Background technique [0002] The pulse signal is one of the most important physiological signals of the human body. Traditional Chinese medicine has relied on pulse diagnosis to obtain the human pulse signal since ancient times. Traditional Chinese medicine pulse diagnosis often depends on the doctor's subjective consciousness and years of clinical experience, which is limited to a certain extent. Due to environmental factors, there is a lack of objective indicators. [0003] A pulse wave is a pressure wave that can be picked up using a pressure sensor. At present, photoelectric volumetric sensors are mainly used to obtain pulse waves on the market. What this me...

AI Technical Summary

Problems solved by technology

At present, photoelectric volumetric sensors are mainly used to obtain pulse waves on the market. What this method obtains is not pressure waves, but blood flow, which cannot be used for correct analysis and comparison with TCM theories.

The rigid pressure sensor has excellent performance indicators and can accurately collect pressure in various ranges. The disadvantage is that it cannot fit the wrist and the measurement is inaccurate.

The flexible pressure sensor can fit well with the wrist, but the disadvantage is that its performance is unstable and it cannot collect high-frequency signals

[0004] In traditional Chinese medicine pulse diagnosis, the weight and movement of finger force are used to explore the pulse condition. The pulse condition obtained by applying different finger force is different, and different physiological information can be obtained. The existing pulse collection device cannot collect pulse under different pressure well. pulse wave

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