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Multifunctional nondestructive lung area ventilating and blood flow meausuring instrument

A non-invasive, multi-functional technology, applied in diagnostic recording/measurement, medical science, sensors, etc., to achieve rapid analysis results, simple operation, and low equipment cost

Inactive Publication Date: 2005-05-04
SHANGHAI JIERUNSI TEXTILE
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the relative shortcomings of the existing lung ventilation and blood flow measurement devices, and provide a multifunctional non-injured lung with accurate and reliable detection data, which can provide left and right lung ventilation data and pulmonary blood flow distribution data in one detection. Regional Ventilation, Blood Flow Meter

Method used

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  • Multifunctional nondestructive lung area ventilating and blood flow meausuring instrument
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  • Multifunctional nondestructive lung area ventilating and blood flow meausuring instrument

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Embodiment Construction

[0021] Below in conjunction with accompanying drawing, the present invention is described in further detail: the chest of human body is equivalent to a section of conductor, and its impedance is made up of resistance, inductance and capacitance, but inductance is generally very little, can be ignored, and capacitance is to actual measurement under the high-frequency current of 100KHz The resulting effect is also small, so changes in chest breathing impedance are essentially changes in electrical resistance. The breathing activity of the lungs of the human body can be reflected by detecting changes in the respiratory impedance, and the amplitude of 1-2 mA ensures the safety of the human body. Such as figure 1 As shown, a non-injured lung area ventilation and blood flow measurement device, the device as a whole includes an AC constant current source generating device 1, an electronic data acquisition device 2, a control system 5, and a computer system for data analysis, processi...

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Abstract

The present invention discloses a multifunctional atraumatic pulmonary ventilation and blood flow volume determination apparatus. Said apparatus is equipped with AC constant current source generation device which can convert the constant voltage into constant current and can be connected with an electronic data acquisition device by means of a drive circuit whose output impedance is greater than 30K ohms. The described electronic data acquisition device includes at least six electronic switches and specific arrangement mode of the described electronic switches. Said invention has the advantages of accurate and reliable acquired data, simple determination method and accurate and quick analytical result. Besides, said invention also provides its concrete application range.

Description

technical field [0001] The invention relates to a measuring device for checking respiratory organs, in particular to an instrument and equipment for measuring the ventilation and blood flow conditions of the lung area by measuring the change of human body's biological impedance. Background technique [0002] Most respiratory diseases are related to lung ventilation disorders. There are many ways to detect pulmonary ventilation disorders, such as traditional instruments and equipment: peak flow meter is used to measure the peak expiratory flow, and spirometer is used for detailed inspection of lung ventilation function. , The plethysmograph is used to measure the absolute lung volume and airway resistance. However, due to many factors affecting the pulmonary ventilation function, the existing instruments and equipment can only measure the conventional lung function and cannot measure the ventilation function of the left and right lungs and the si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/00A61B5/053A61B5/08
Inventor 贾海泉王英晨
Owner SHANGHAI JIERUNSI TEXTILE
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