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Device and method for noninvasively detecting level of carbon dioxide in human blood

A carbon dioxide, human body detection technology, applied in the directions of diagnostic recording/measurement, medical science, sensors, etc., can solve the problems of strong randomness, large error, inability to help patients to prolong exhalation, etc., to improve the degree of standardization, ensure consistency, The effect of prolonging the expiratory time

Active Publication Date: 2015-05-06
广州弘凯物联网服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention has the following deficiencies: 1. There is no corresponding method or device, so it cannot help patients to prolong exhalation conveniently; 2. Patients who cannot complete the prolong exhalation method well, because the measurement process has strong randomness and large errors The risk will affect the accuracy of the curve fitting method

Method used

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  • Device and method for noninvasively detecting level of carbon dioxide in human blood
  • Device and method for noninvasively detecting level of carbon dioxide in human blood
  • Device and method for noninvasively detecting level of carbon dioxide in human blood

Examples

Experimental program
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Effect test

Embodiment 1

[0099] A detection device for non-invasive detection of carbon dioxide levels in human blood, such as Figure 1~Figure 6 , Figure 8~Figure 12 , Figure 16 as shown,

[0100] Including a mouthpiece 1 for the user to exhale air

[0101] Induced extended exhalation device 2, used to provide positive expiratory pressure, limit the flow rate, and induce the exhaled gas to continue exhaling;

[0102] The infrared adapter window 3 is used for the detection gas chamber of exhaled gas, and detects infrared light through it;

[0103] The signal detection and processing device 4 is used to send detection infrared light to the infrared adapter window 3, and detect the CO2 partial pressure of the exhaled gas;

[0104] The terminal 5 is used to receive, process and display the data of the signal detection processing device 4 .

[0105] The mouthpiece 1 includes an exhalation part 101 and an exhalation interface 102 at the rear end. The exhalation part 101 has two curved parts on both ...

Embodiment 2

[0141] The main technical scheme of the detection device of a non-invasive detection device for detecting carbon dioxide level in human blood in this embodiment is basically the same as that of embodiment 1, and the features not explained in this embodiment are explained in embodiment 1. This will not be repeated here. The difference between this embodiment and Embodiment 1 is that, if Figure 7 , Figure 13 , Figure 14 , Figure 15 As shown, wherein, the current limiting mechanism includes a spring 206, a plug 207 rear cavity 208, one end of the spring 206 is connected to the plug 207, and the other end is connected to the rear cavity 208, and the plug 207 is set In the accommodation cavity 202, the rear cavity 208 is sleeved at the end of the accommodation cavity 202, the diameter of the plug 207 is smaller than the inner diameter of the joint, and the pressure of the spring 206 type flow limiting mechanism is set to 0-30cmH 2 O.

Embodiment 3

[0143] The main technical scheme of the detection device of a non-invasive detection device for detecting carbon dioxide level in human blood in this embodiment is basically the same as that of embodiment 1 and embodiment 2, and the features not explained in this embodiment are adopted in embodiment 1, The explanation in Embodiment 2 will not be repeated here. The difference between this embodiment and embodiment 1 and embodiment 2 is that the output end of the blowing nozzle 1 communicates with the air inlet end of the infrared adapter window 3, and the air outlet end of the infrared adapter window 3 communicates with the air inlet end of the infrared adapter window 3. The joints of the induction extension exhalation device 2 are connected, the infrared adapter window 3 is fixed to the signal detection processing device 4 , and the signal detection processing device 4 is connected to the terminal 5 by electrical signals.

[0144] This embodiment adopts a rear-mounted current-...

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Abstract

The invention discloses a device for noninvasively detecting the level of carbon dioxide in human blood. The device comprises a blowing nozzle, a prolonged expiration induction device for a user to conveniently expire, an infrared adapter window body, a signal detection processing device and a terminal, wherein the prolonged expiration induction device is used for providing expiration positive pressure, limiting flow velocity and inducing the continuous prolonged expiration of expired gas; the infrared adapter window body is used for a detection gas chamber of the expired gas, and detection infrared rays pass through the infrared adapter window body; the signal detection processing device is used for emitting the detection infrared rays to the infrared adapter window body, and detecting the CO2 partial pressure of the expired gas; the terminal is used for receiving, processing and displaying the data of the signal detection processing device. According to the device, the prolonged expiration induction device can be used for providing expiration positive pressure and limiting the flow velocity, so that a patient can be helped to conveniently prolong the expiration time and improve expiration effects; with the use of the prolonged expiration induction device, the flow velocity and pressure of the expired gas are regular, the measurement standardization degree of a testee (patient) is favorably improved, and the consistency of a measurement result is ensured.

Description

technical field [0001] The invention relates to the technical field of carbon dioxide detection, in particular to a detection device and method for non-invasive detection of carbon dioxide levels in human blood. Background technique [0002] [1] In normal healthy people, end-tidal partial pressure of carbon dioxide (PetCO 2 ) can basically replace the arterial partial pressure of carbon dioxide (PaCO 2 ). This is due to the fact that carbon dioxide has essentially no diffusion restriction, alveolar PCO 2 (PACO 2 ) is approximately equal to the capillary end PCO 2 , which in turn is equal to the arterial PCO 2 (PaCO 2 ). The last breath exhaled in each breathing cycle is the end-tidal (end-tidal) gas from the alveoli. End-tidal PCO can be obtained by sampling breath-to-breath exhaled gas 2 Display value. This reading will be equal to or very close (within 1~2 mmHg) to the alveolar and arterial PCO 2 . In summary, in healthy people: [0003] PetCO 2 ≌PaCO 2 ...

Claims

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Application Information

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IPC IPC(8): A61B5/08
CPCA61B5/082
Inventor 王乾隆王涛邓清娟
Owner 广州弘凯物联网服务有限公司
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