Breathing machine oxygen concentration control method, device and system

A technology of a control device and a control method, which is applied in the field of ventilators, and can solve problems such as heavy weight, bulky, unsuitable for portable emergency transport ventilators, etc.

Active Publication Date: 2015-08-12
SHENZHEN COMEN MEDICAL INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If there is no decompression valve to provide a constant pressure, the oxygen flow rate output by the proportional valve has no corresponding curve relationship with the opening, and the traditional oxygen concentration control method of the ventilator cannot control

Method used

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  • Breathing machine oxygen concentration control method, device and system
  • Breathing machine oxygen concentration control method, device and system
  • Breathing machine oxygen concentration control method, device and system

Examples

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Embodiment Construction

[0054] figure 1 It is a hardware environment diagram for the application of the ventilator oxygen concentration control method in an embodiment, including a filter element 110, a proportional valve 120, a flow sensor 130 and a ventilator oxygen concentration control device 140, wherein the ventilator oxygen concentration control device 140 is used to realize a A ventilator oxygen concentration control method. The input end of the filter element 110 is connected to the gas source device, and the gas source gas is input from the input end, and the impurities in the gas are filtered through the filter element 110 to reach the input end of the proportional valve 120 . The ventilator oxygen concentration control device 140 controls the proportional valve 120 to output the required oxygen flow, the oxygen output from the proportional valve 120 enters the flow sensor 130, and the flow sensor 130 obtains the actual monitored oxygen flow, and feeds back to the ventilator oxygen concent...

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Abstract

The invention relates to a breathing machine oxygen concentration control method. The breathing machine oxygen concentration control method comprises steps of obtaining the target oxygen flow velocity of a breathing machine, controlling the opening degree of a proportioning valve to be in a critical valve opening state, obtaining the monitored oxygen flow velocity on the opening degree, calculating a target current value based on the target oxygen flow velocity and the monitored oxygen flow velocity, adjusting the opening degree of the proportioning valve based on the target current value, obtaining the monitored oxygen flow velocity on the adjusted opening degree, determining whether the target oxygen flow velocity is consistent with the monitored oxygen flow velocity or not, calculating a target current value based on the target oxygen flow velocity and the monitored oxygen flow velocity when the target oxygen flow velocity is not consistent with the monitored oxygen flow velocity, otherwise, maintaining the opening degree of the proportioning valve. Under a non-constant pressure, the oxygen concentration can be controlled. In addition, the invention also provides a breathing machine oxygen concentration control device and system, by employing the breathing machine oxygen concentration control system without a pressure-reducing valve, the size and weight of the breathing machine oxygen concentration control device are reduced, and the breathing machine oxygen concentration control device and system are applied to breathing machines which are high in portability.

Description

technical field [0001] The invention relates to the technical field of ventilators, in particular to a method, device and system for controlling the oxygen concentration of a ventilator. Background technique [0002] During the use of the ventilator, it is necessary to provide air with adjustable oxygen concentration according to the patient's condition. For patients being treated, the control of oxygen concentration is very important. The oxygen concentration control system in the ventilator is connected to the oxygen source of the ventilator, and plays the role of controlling the delivery of oxygen with the required oxygen concentration. [0003] The traditional ventilator oxygen concentration control system often uses a pressure reducing valve to provide a constant pressure. Under the condition of constant pressure, the opening of the proportional valve is adjusted according to the corresponding relationship curve between the oxygen flow rate and the opening degree outpu...

Claims

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Application Information

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IPC IPC(8): G05D11/13
CPCA61M16/10G05D7/00
Inventor 成其新赵晨唐潮根
Owner SHENZHEN COMEN MEDICAL INSTR
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