Gas flow control method in a blower based ventilation system
Номер патента: EP1799292A1
Опубликовано: 27-06-2007
Автор(ы): Kun Li
Принадлежит: Nellcor Puritan Bennett LLC
Опубликовано: 27-06-2007
Автор(ы): Kun Li
Принадлежит: Nellcor Puritan Bennett LLC
Реферат: The invention is directed to a system and method for controlling the flow of gas from a medical ventilator into a patient's lungs. The control system provides for a non-linear feedforward controller to correct for disturbances caused by back pressure at the outlet of the blower of the medical ventilator. For this purpose, a pressure transducer is provided to measure the back pressure. Additionally, the invention allows for a feedback controller to correct for the differences between the rate of the actual gas flow and the targeted gas flow rate. For this purpose a flow rate transducer is provided. The control system may account for each of the gas flow rate error and the back pressure disturbance to provide for a quick and accurate adjustment to achieve the targeted gas flow rate.
Gas flow control method in a blower based ventiliation system
Номер патента: NZ554007A. Автор: Kun Li. Владелец: Nellcor Puritan Bennett Inc. Дата публикации: 2010-08-27.