A device and a method for measuring the flow and the components of respiratory gases synchronously

A breathing gas and synchronous measurement technology, applied in measuring devices, measuring flow/mass flow, liquid/fluid solid measurement, etc., to improve diagnostic efficiency and reduce medical costs

Inactive Publication Date: 2018-07-10
SYSMED CHINA CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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[0008] At present, no individual, institution or company has

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  • A device and a method for measuring the flow and the components of respiratory gases synchronously
  • A device and a method for measuring the flow and the components of respiratory gases synchronously
  • A device and a method for measuring the flow and the components of respiratory gases synchronously

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Embodiment Construction

[0079] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0080] Such as figure 1 As shown, a device for synchronously measuring the flow and composition of respiratory gas includes an ultrasonic flow sensor unit, a mid-infrared end-tidal carbon dioxide sensor unit, an environmental condition test unit, a drive control and signal processing unit, a signal transmission unit, and a power supply unit. Ultrasonic flow sensor unit for measuring downstream travel time T f and countercurrent travel time T b The mid-infrared end-tidal carbon dioxide sensor unit is used to collect real-time infrared radiation intensity signals; the environmental condition test unit is used to measure temperature, pressure and humidity signals; the drive control and signal processing unit is used to drive and control the above units to work and receive Signals and data output by the above units; also used to apply the receiv...

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Abstract

The invention relates to a device and a method for measuring the flow and the components of respiratory gases synchronously. The device comprises an ultrasonic flow sensor sub-unit, an intermediate infrared end-tidal carbon dioxide sensor sub-unit, an environmental condition testing unit, a drive control and signal processing unit, a signal transmission unit and a power unit. The method comprisesthe steps of: measuring a forward flow propagation time Tf and a reverse flow propagation time Tb by using the ultrasonic flow sensor sub-unit; collecting real-time infrared radiation intensity signals by using the intermediate infrared end-tidal carbon dioxide sensor sub-unit; calculating the flow of respiratory gases and the content C of carbon dioxide by using the drive control and signal processing unit. The method measures the ventilation function and the gas exchange function of lung functions synchronously in the same integrated sensor, so that the diagnosis efficiency is greatly increased and the application of wireless data transmission in telemedicine is realized.

Description

technical field [0001] The invention relates to the field of respiratory gas flow and component measurement, in particular to a device and method for synchronously measuring the respiratory gas flow and component. Background technique [0002] Pulmonary function tests include ventilation function, ventilation function, respiratory regulation function and pulmonary circulation function. Respiratory flow measurement is widely used in the field of lung function testing. Basic pulmonary function test is a physical examination method. Some basic pulmonary function parameters such as volume index, ventilation index, airway resistance and other ventilation function indexes can be obtained through simple respiratory flow measurement. Pulmonary function tests can screen for common chronic lung diseases such as emphysema, asthma, and chronic obstructive pulmonary disease. This measurement only checks the ventilatory function. [0003] Most of the spirometer flow measurement is carr...

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Application Information

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IPC IPC(8): G01F1/66G01N21/3504
CPCG01F1/66G01N21/3504
Inventor 黄勇张玉谦傅佳萍龙峰边宏亮舒文秀马绍嘉简越
Owner SYSMED CHINA CO LTD
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