5 results about "Expiratory Time" patented technology

An inhalation treatment device comprises a housing body (4), a reservoir (2), a membrane unit comprising a membrane (5), an actuator (6) and a flow path (7). A liquid is supplied to the first side of the membrane, and an aerosol is generated at the second side. A flow is created in a first flow direction from the second opening to the first opening of the flow path upon inhalation and a flow is created in a second flow direction from the first opening to the second opening upon exhalation. The second opening is shaped to establish a flow resistance of 160 Pa + / -100 Pa upon inhalation of the user, and the flow resistance upon exhalation is at least 25% lower than the flow resistance upon inhalation, the flow resistance measured at peak flow rates of sinus breathing modes with inhalation and exhalation times of two seconds, respectively, and tidal volume of 500 ml.

The application discloses a sleep system and method based on internet communication, and particularly relates to the field of smart home and health monitoring, which is used to solve the problems of sleep microenvironment regulation lag and physical intervention easily inducing micro-awakening. First, based on multi-source sensing, heart-lung waveform and temperature and humidity data are acquired, and microclimate sweat index is calculated to accurately lock physiological heat dissipation demand. Then, when the sweat threshold is met, the time domain tracking of the respiratory envelope is carried out, the next expiration trough and time window are extrapolated, and the intervention time is limited to the feeling gate delay period. Through dynamic calculation of pure network time consumption and motor pressure building time consumption, the predicted time point is reversely compensated on the time axis to generate an advance trigger time stamp, and the system response time difference is smoothed. Finally, the ventilation volume is equivalent to discrete single pulse air volume, the driving control node only outputs airflow in the expiration time window, the dehumidification action is hidden in the natural expiration stage, and a non-inductive closed-loop intervention system is constructed, thereby providing scientific support for sleep health management.

The invention provides a method and a system for dynamically determining expiration time and a breathing machine, and the method comprises the following steps: after I periods of ventilation are started, executing an expiration keeping operation once, and then executing an expiration keeping operation once every K times; counting results of the latest T times of endogenous positive end expiratory pressure, and calculating the number of digits and recording the digits as Pm; adjusting the expiration time according to the measurement result: if 1cm H2O < lt >; if Pm is less than or equal to 5cm H2O, increasing the expiration time for a first prolonging time; if the size is 5cm H2O < lt >; if Pm is smaller than or equal to 10 cm H2O, the expiration time is increased by second prolonging time; if Pmgt; and if H2O is 10cm, the expiration time is increased by a third prolonging time. The method has the advantages that the real endogenous PEEP value in the most natural and unconscious state can be captured, and objectivity and reliability of monitoring data are ensured; while the curative effect is pursued, ventilation safety is fundamentally guaranteed, and invalid or harmful continuous intervention is avoided.

This invention relates to a ventilation control system, comprising a control unit capable of generating control signals for adjusting the operating parameters of a ventilator. The control unit is capable of determining a normal control scheme in the following manner: determining several influencing parameters; inputting the determined influencing parameters into an established lung model to calculate the respiratory rate; calculating the inspiratory and expiratory times using the respiratory rate; calculating the tidal volume using the respiratory rate and determining the corresponding normal control scheme according to the calculated tidal volume, wherein the initially determined normal control scheme is used as the initiation scheme; and iteratively optimizing the respiratory rate to calculate the inspiratory time, expiratory time, and tidal volume of the next sequence, thereby updating the normal control scheme.