A human respiratory simulation system

Abstract

The invention provides a simulation system of a human respiratory tract. The simulation system comprises a multi-channel sleep detector, a signal receiving and processing device, an elastic seal adjustable butterfly valve, a butterfly valve electric actuating mechanism, a simulated lung, a simulated lung electric actuating mechanism, a simulated respiratory tract and a breathing machine to be tested. According to the simulation system provided by the invention, true human signals acquired by the multi-channel sleep detector are used for carrying out input control, and a breathing system can be personated better, therefore a central sleep respiration event and a obstructive sleep respiration event can be simulated respectively, and a mixed sleep respiration event can be reflected; meanwhile, a pipeline provided with the adjustable butterfly valve is taken as a simulated air path, under-jaw myoelectricity is taken as the input of the adjustable butterfly valve, and the opening degree of the butterfly valve is controlled to simulate the collapse degree of the air way, therefore a true human sleep respiration event can be precisely input to a breathing machine, and the online adjustment of the collapse degree of an upper air way can be realized; furthermore, the true human sleep respiration event can be simulated to effectively test and design the responding speed and precision of the breathing event by the breathing machine, therefore the research and development period can be shortened, and the capacity of the breather can be improved.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a human respiratory tract simulation system. Background technique [0002] In the field of ventilator testing, it is an essential step to test the pressure response of the ventilator to respiratory events and adjust the output pressure of the ventilator in time to improve the therapeutic effect of the ventilator. [0003] Sleep apnea hypopnea syndrome (Sleep Apnea Hypopnea Syndrome, SAHS) has gradually increased its incidence in recent years, which refers to recurrent episodes of apnea more than 30 times per night during sleep or sleep apnea hypopnea index (AHI) ≥ 5 times / Hours with clinical symptoms such as lethargy. Its pathogenesis is divided into three types: central type (CSAS), obstructive type (OSAS) and mixed type (MSAS). In addition to causing snoring during sleep with apnea and / or shallow breathing (hypopnea), awakenings, excessive daytime sleepin...

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Problems solved by technology

[0019] 1) Actively simulate the executive components of the lungs, mostly using function generators, signal generators, etc. to simulate breathing movements, without using real human body signals as input, which is somewhat different from the real breathing movements of the human body, and cannot reflect the diversity of human breathing events;

[0020] 2) Most active simulated lungs use tubes with different airway resistances to simulate the airway, and the airway resistance cannot be adjusted online; and for the simulation of airway collapse, the collapsible hose and hose clamp used to simulate apnea The method is manual control, the degree of airway collapse cannot be accurately determined, and the degree of upper airway collapse and the number of collapses cannot be adjusted online. At the same time, it cannot be controlled by real human body signals. Therefore, the simulation of apnea and hypopnea events caused by airway collapse, differ from the real situation;

[0021] 3) In the above-mentioned simulation methods of the respiratory system, central apnea and obstructive apnea are not clearly distinguished, but simulated lungs are used to simulate breathing movements, and different resistance pipes or hose clamps are used to simulate respiratory events, so it is impossible to distinguish between central apnea and obstructive apnea. Apnea time and obstructive apnea time, and unable to characterize some central apnea and obstructive apnea concurrent respiratory events

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