Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A ventilator gas ratio control method and device

A technology of proportional control and control method, applied in the direction of respirator, valve device, valve operation/release device, etc., can solve the problems of misleading the operator, deviation of oxygen concentration, affecting clinical use effect, etc., and achieve the effect of improving accuracy

Active Publication Date: 2014-10-01
BEIJING AEONMED
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the opening degree and flow rate curve of the proportional valve are changed by the pressure of the gas source, the gas oxygen concentration control given by the double proportional valve ventilation will deviate. In addition, the minimum flow rate that the proportional valve can give is determined by the proportional valve itself. Determined by the characteristics, when the proportional valve cannot give the required flow rate, the oxygen concentration control of the gas given by the double proportional valve ventilation will deviate
In the prior art, the oxygen concentration sensor is generally used for monitoring the oxygen concentration sensor, and the oxygen concentration sensor will drift, and the sensor needs to be calibrated frequently, otherwise, the monitoring will be deviated, affecting the clinical use effect, and even misleading the operator
[0003] In the prior art, no effective solution has been given for the above-mentioned problem of oxygen concentration offset

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A ventilator gas ratio control method and device
  • A ventilator gas ratio control method and device
  • A ventilator gas ratio control method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0025] Aiming at the problem of deviations in clinical monitoring of oxygen concentration, the present invention proposes and specifically introduces a method and device for controlling the gas ratio of a ventilator.

[0026] figure 1 It is the main flowchart of a ventilator gas ratio control method according to the present invention, see figure 1 , a ventilator gas ratio control method, comprising: a: obtaining the relationship between the opening and flow rate of the air proportional valve and the oxygen proportional valve of the ventilator; b: according to the relationship between the opening and the flow rate and the preset oxygen The concentration value controls the air proportional valv...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A method and a device for controlling the gas ratio of a breathing machine. The method comprises: a: acquiring an opening-flow rate relationship of an air ratio valve and an oxygen ratio valve of the breathing machine; b: controlling the air ratio valve and the oxygen ratio valve according to the opening-flow rate relationships and a preset oxygen concentration value; and c: fine-tuning the air ratio valve and the oxygen ratio valve according to a current oxygen concentration value and the preset oxygen concentration value. The control device comprises: an acquisition module (401), configured to acquire the opening-flow rate relationship of an air ratio valve and an oxygen ratio valve of the breathing machine; a control module (403), configured to control the air ratio valve and the oxygen ratio valve; and a fine-tuning module (405), configured to fine-tune the air ratio valve and the oxygen ratio valve. Through the method and the device, the oxygen concentration of the gas can be monitored in real time, so as to perform double loop control on the oxygen concentration, so that the oxygen concentration of the provided gas is the same as the set oxygen concentration, thereby improving the accuracy of oxygen mixture control.

Description

technical field [0001] The invention belongs to the field of medical equipment, and relates to a method and a device for controlling the gas ratio of a ventilator. Background technique [0002] The ventilator needs to provide air with adjustable oxygen concentration according to the needs of users. For the pneumatic and electronically controlled ventilator realized by double proportional valves, if oxygen mixing is required, two proportional valves need to be opened at the same time, and the opening of the two proportional valves The temperature and opening time directly affect the oxygen concentration of the output gas. Since the opening degree and flow rate curve of the proportional valve are changed by the pressure of the gas source, the gas oxygen concentration control given by the double proportional valve ventilation will deviate. In addition, the minimum flow rate that the proportional valve can give is determined by the proportional valve itself. Due to the characte...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): A61M16/14F16K31/00
CPCA61M16/203A61M2016/1025A61M2202/0208A61M16/12
Inventor 金文贤
Owner BEIJING AEONMED
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com