Closed-loop expectoration method and system for automatically titrating expectoration pressure
A technology for automatic titration and expectoration of sputum, which is applied in the fields of drug devices, medical equipment, and other medical devices to achieve the effects of evaluability, reduction of titration workload, and intuitive control.
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[0042]Embodiments of the present invention are described below with reference to the drawings, in which like parts are denoted by like reference numerals. In the case of no conflict, the following embodiments and the technical features in the embodiments can be combined with each other.
[0043] figure 1 The control principles of the method and system of the present invention are presented.
[0044] The starting point of the present invention is based on the basic mechanical principle of secretion movement: during expectoration, both the average cough flow rate in the negative pressure phase and the coughed out air volume in the negative pressure phase must reach a certain set value, so that it is possible to effectively remove the secretions in the airway. Coughing up secretions. The movement of the secretion is generated by the thrust of the airflow acting on it. The greater the thrust, the faster the secretion will accelerate; however, the duration of the thrust acting on...
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