Turbine respirator pressure control ventilation method

Abstract

A turbine ventilator pressure-controlled ventilation method comprising the following steps: a ventilator is started up, a control unit in the ventilator controls a turbine motor to rotate at rotational speed U, the turbine motor provides the ventilator with a hyperbaric gas; a detector unit detects the breathing state of a patient, if the patient is in an inhalation state, proceeds to an inhalation phase control, and, if the patient is in an exhalation state, proceeds to an exhalation phase control; the air pressure of an inhalation phase is controlled by the control unit by controlling driving voltage V1 of an inhalation valve to regulate the extent to which the inhalation valve is opened, the positive end-expiratory pressure of an exhalation phase is controlled by the control unit by controlling driving voltage V2 of an exhalation valve to regulate the extent to which the exhalation valve is opened, and, if auxiliary air supply by the ventilator to the patient is ceased, the ventilator is shut down. The method implements real-time synchronous control of the rotational speed of the turbine motor and real-time control of input voltages of the inhalation valve and of the exhalation valve of the ventilator, thus implementing the goals of precision control of motor rotational speed and of target pressure.

Description

technical field [0001] The invention relates to the technical field of ventilation pressure control of a ventilator, in particular to a pressure control ventilation method of a turbo ventilator. Background technique [0002] At present, volume control or pressure control is mostly used in anesthesia machine and ventilator control. Under normal circumstances, these two control methods can only correspond to special patient groups. The advantage of pressure control is that it can provide ventilation at a specified pressure for the patient at regular intervals according to the pressure set by the doctor. The pressure value supplied each time is almost the same, which can be applied For environments with lung disease, as well as infants, it is suitable for a wide range of patients. [0003] In the ventilator ventilation mode, pressure-controlled ventilation is the most basic ventilation method. In traditional ventilators, since the air source pressure is provided by an air comp...

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Problems solved by technology

[0003] In the ventilator ventilation mode, pressure-controlled ventilation is the most basic ventilation method. In traditional ventilators, since the air source pressure is provided by an air compressor or external equipment to provide high-pressure gas, PCV control changes to controlling the opening of the inspiratory valve, and then through Pressure sensor feedback, real-time monitoring of the value of the target pressure, however, in the turbo ventilator, the pressure is generated by the rotation of the turbine to generate high-pressure gas, so in the turbo ventilator, the PCV not only needs to control the target pressure, but also has to calculate the speed of the turbine, if the speed is too low It will cause the target pressure not to be reached. If the speed is too high, the target pressure will be difficult to control, and there will be risks

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