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Acoustic meatus type wearable pulse wave acquiring and recording device

A recording device and pulse wave technology, applied in catheters and other directions, can solve problems such as unfavorable monitoring and high signal-to-noise ratio, and achieve the effect of easy measurement, high reference value, and rich blood oxygen

Inactive Publication Date: 2016-02-10
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the existing pulse wave acquisition devices, the pulse wave acquisition position is generally the fingertip, which requires the user to be in a non-exercising state and keep relatively still, which is not conducive to long-term monitoring, and is easily affected by external light, temperature and even water. The influence of environmental and other factors makes the original pulse wave have a higher signal-to-noise ratio

Method used

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  • Acoustic meatus type wearable pulse wave acquiring and recording device
  • Acoustic meatus type wearable pulse wave acquiring and recording device
  • Acoustic meatus type wearable pulse wave acquiring and recording device

Examples

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Embodiment 1

[0040] Example 1, such as figure 1 As shown, an ear canal wearable pulse wave acquisition and recording device is provided, the pulse wave sensor 103 is connected to one end of the main control chip 105 through the pulse wave amplification circuit 104, and the other end of the main control chip 105 is connected to the The storage chip 106 and the wireless communication module 107; the main control chip 105 is connected to the battery 102.

[0041] In this embodiment, the function of the pulse wave amplifying circuit 104 is to further amplify the signal measured by the pulse wave sensor 103, so as to facilitate transmission and control.

[0042]In this embodiment, a wireless communication module 107 is included. The communication module has an outward wireless transmission interface, and sends the data stored in the memory chip 106 to remote terminal equipment, such as mobile phones, PDAs, computers, etc., which can not only reduce The small size of the device makes the device...

Embodiment 2

[0048] Example 2, such as image 3 As shown, an ear canal wearable pulse wave acquisition and recording device is provided. In this embodiment, the pulse wave sensor 103 adopts a reflective photoplethysmography sensor, and the light source 301 and the photoelectric receiver 302 are both placed in the external auditory canal, which is not easy Affected by external light, temperature and other factors. like Figure 4 The principle of photoplethysmography is: when a beam of light of a certain wavelength is irradiated on the skin surface, the beam will pass through the tissue through transmission or reflection, and the absorption of light by the skin, muscles, bones, etc. remains constant throughout the blood circulation. Changes, while the blood volume in the skin changes pulsatingly under the action of the heart, causing changes in the intensity of received light. The photoelectric receiver converts the light intensity change signal into an electrical signal, and the obtained ...

Embodiment 3

[0049] Example 3, such as Figure 5 As shown, an ear canal-type wearable pulse wave acquisition and recording device is provided. In this embodiment, the pulse wave sensor 103 adopts a piezoelectric film sensor. Compared with a photoelectric sensor, it does not require a light source, has low energy consumption, and is compact smaller. The piezoelectric film sensor 501 is closely attached to the inner membrane of the ear canal, and the pulse wave data collected by the main control chip 105 can be stored in the memory chip, or can be sent to the corresponding terminal equipment through the data transmission module, such as mobile phone, PDA, computer etc.; when an abnormality is detected in the pulse wave data, the terminal device can alarm. Of course, the pulse wave sensor 103 is not limited to the piezoelectric film sensor 501, and other piezoelectric sensors should also be included in the present invention.

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Abstract

The invention relates to an acoustic meatus type wearable pulse wave acquiring and recording device. The device comprises a pulse wave sensor (103), a memory chip (106), a main control chip (105) and an ear mold (101) used for packaging and supporting the pulse wave sensor (103), the memory chip (106) and the main control chip (105). The device can well adapt to the shape of an ear and firstly is not easily affected by the external environment, such as sweating, sports, touching, illumination changing and the like relative to conventional fingertip measurement, so that pulse wave signals with a higher signal-to-noise ratio are obtained; secondarily, the device allow people to monitor the pulse wave for a long time in any state including running, swimming and sleeping, the obtained pulse wave signals can reflect more physiological parameters, and convenience is provided for later analysis of the pulse waves; finally, due to abundance of blood oxygen of the brain, the device can more easily perform accurate measurement, the reference value is higher, and the device can be applied to the field of wearable detection of pulse waves.

Description

technical field [0001] The invention relates to the field of pulse wave detection, in particular to an ear canal-type wearable pulse wave acquisition and recording device. Background technique [0002] Pulse is an important physiological feature. During the cardiac cycle, the ejection activity of the heart causes the pressure in the arterial tube to fluctuate periodically, and the resulting vibration propagates to the arterial tube system in the form of a wave, which is called pulse wave. The propagation process of the pulse wave is not only affected by the heart itself, but also by the condition of the arteries and surrounding tissues and organs along the way, so the pulse wave contains extremely rich physiological and pathological information of the human body. [0003] The acquisition of pulse wave can adopt piezoelectric sensor, piezoresistive sensor, photoelectric volume pulse sensor or ultrasonic Doppler technology. The analysis of the pulse wave is mainly to compare ...

Claims

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Application Information

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IPC IPC(8): A61B5/02
Inventor 刘静金海岚周一欣
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI