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Control method for pressure control of capacity mode in breathing machine

A technology of pressure control and control method, which is applied in the field of ventilators, can solve the problems of no control method and achieve good transplantability

Active Publication Date: 2017-01-25
BEIJING AEONMED
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no unified control method for the PRVC mode

Method used

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  • Control method for pressure control of capacity mode in breathing machine
  • Control method for pressure control of capacity mode in breathing machine
  • Control method for pressure control of capacity mode in breathing machine

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Embodiment Construction

[0030] The PRVC mode requires that the target of control is VT (volume), and the control method is PCV, so the target parameter settings are only VT and inspiratory time, because everyone’s lungs are different, children’s lungs are small, adults’ lungs are large, the same VT The generated pressure is different. How to calculate the corresponding pressure according to VT, and then take the calculated pressure as the control target, so as to achieve the capacity control by means of pressure.

[0031] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0032] Such as figure 1 Shown, a kind of control method of pressure control volume mode in the turbine ventilator, described method comprises:

[0033] Step 1) Calculate the set flow rate V according to the set capacity value VT and inspiratory time T:

[0034] V=VT / T

[0035] In PRVC mode, set the capacity VT=400, T=1S, then set the flow rate as: V=400ml / s.

[0036] ...

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Abstract

The invention provides a control method for pressure control of a capacity mode in a breathing machine. The method comprises the steps of calculating the compliance C of the lung of a user according to a set capacity value on the basis of a capacity control mode; calculating an initial control voltage value and an initial actual capacity value, then, repeatedly controlling a voltage value according to a closed-loop control algorithm, and finally enabling an absolute value of a difference between the actual capacity value and the set capacity value to be smaller than a threshold value; obtaining final control voltage. The method can control the capacity of the breathing machine through pressure, and has the advantages of being easy to implement and good in portability.

Description

technical field [0001] The invention relates to the field of ventilators, in particular to a control method for a pressure-controlled capacity mode in a ventilator. Background technique [0002] In traditional ventilators, volume (VCV) control and pressure (PCV) control are the two most commonly used control methods, and other control modes are evolved from these two modes. [0003] The VCV control mode is to control the volume (ml) of inhaled gas. Generally, the volume of inhaled gas for an adult is about 400ml. If the inhalation time is 1s, the inspiratory flow rate is 400ml / s; so the inspiratory flow rate in the whole process is 400ml / s. , so that the control of capacity can be transformed into the control of flow rate. Therefore, in the VCV control mode, the inspiratory flow rate is required to remain unchanged; the two most basic parameters can be set, one is VT (gas capacity), and the other is T (inhalation time). According to these two parameters, it can be calculate...

Claims

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Application Information

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IPC IPC(8): A61M16/00
Inventor 成杰
Owner BEIJING AEONMED
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