Mixing cavity pressure control method, breathing machine equipment and computer readable storage medium

A technology of pressure control and mixing chamber, which is applied in the medical field, can solve the problems of pressure drop in the mixing chamber, increase the flow rate of the ventilator and the difficulty of oxygen concentration control, and achieve the effect of improving stability

Active Publication Date: 2020-06-23
SHENZHEN COMEN MEDICAL INSTR
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Problems solved by technology

However, it has not solved the control problem that the pressure of the mixing chamber drops sharply when the flow rate rises rapidly when the large target flow rate is large.
The faster the flow rate increases, the more the pressure drop in the mixing chamber increases, which increases the difficulty of controlling the flow rate and oxygen concentration of the ventilator

Method used

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  • Mixing cavity pressure control method, breathing machine equipment and computer readable storage medium
  • Mixing cavity pressure control method, breathing machine equipment and computer readable storage medium
  • Mixing cavity pressure control method, breathing machine equipment and computer readable storage medium

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Embodiment Construction

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0028] The self-adaptive algorithm is used to adjust the pressure of the mixing chamber. Due to the hysteresis characteristics of the solenoid valve and the flow sensor, the current control amount cannot be applied immediately, and the control amount of the mixing chamber pressure cannot be accurately predicted when the flow rate rises rapidly, resulting in a relatively large air intake in the mixing chamber. Less and more air output, breaking the dynamic balance of...

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Abstract

The embodiment of the invention discloses a mixing cavity pressure control method. The method comprises: obtaining the target ventilation flow of a mixing cavity; obtaining a current air outlet flow change value; and adjusting the air inflow of the mixing cavity according to the target ventilation flow and the current air outflow change value. The invention further discloses breathing machine equipment and a computer readable storage medium. The problem that the pressure of the mixing cavity drops when the flow rapidly rises can be effectively avoided, and the stability of breathing machine equipment is improved.

Description

technical field [0001] The invention relates to the field of medical technology, in particular to a mixing chamber pressure control method, a ventilator device and a computer-readable storage medium. Background technique [0002] For ventilators using the air-oxygen mixing chamber scheme, the accuracy and fluctuation range of the pressure control of the mixing chamber have a very important impact on the flow control and oxygen concentration control of various ventilation modes. The more precisely the pressure of the mixing chamber is controlled, the easier it is to control the flow and oxygen concentration of the ventilator, and the stability will be better. [0003] The self-adaptive algorithm is used to adjust the pressure of the mixing chamber, which can realize the precise control of the pressure of the mixing chamber during the stable period of inhalation flow and low flow inhalation. But it does not solve the control problem that the pressure of the mixing chamber dro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D16/20G05D7/06A61M16/00G16H40/63
CPCG05D16/2013G05D7/0635G16H40/63A61M16/00A61M2016/0027A61M2205/3334
Inventor 罗忠杰罗小锁李秋华彭强
Owner SHENZHEN COMEN MEDICAL INSTR
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