WO2012089092A1 - Procédé et dispositif pour réguler le rapport de gaz d'un appareil respiratoire - Google Patents

Procédé et dispositif pour réguler le rapport de gaz d'un appareil respiratoire Download PDF

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Publication number
WO2012089092A1
WO2012089092A1 PCT/CN2011/084698 CN2011084698W WO2012089092A1 WO 2012089092 A1 WO2012089092 A1 WO 2012089092A1 CN 2011084698 W CN2011084698 W CN 2011084698W WO 2012089092 A1 WO2012089092 A1 WO 2012089092A1
Authority
WO
WIPO (PCT)
Prior art keywords
oxygen
proportional valve
oxygen concentration
concentration value
control
Prior art date
Application number
PCT/CN2011/084698
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English (en)
Chinese (zh)
Inventor
金文贤
Original Assignee
北京谊安医疗系统股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 北京谊安医疗系统股份有限公司 filed Critical 北京谊安医疗系统股份有限公司
Priority to BR112012032964A priority Critical patent/BR112012032964A2/pt
Publication of WO2012089092A1 publication Critical patent/WO2012089092A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/12—Preparation of respiratory gases or vapours by mixing different gases
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/20—Valves specially adapted to medical respiratory devices
    • A61M16/201—Controlled valves
    • A61M16/202—Controlled valves electrically actuated
    • A61M16/203—Proportional
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/1005—Preparation of respiratory gases or vapours with O2 features or with parameter measurement
    • A61M2016/102—Measuring a parameter of the content of the delivered gas
    • A61M2016/1025—Measuring a parameter of the content of the delivered gas the O2 concentration
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2202/00—Special media to be introduced, removed or treated
    • A61M2202/02—Gases
    • A61M2202/0208—Oxygen

Definitions

  • the present invention relates to the field of medical devices, and relates to a ventilator gas ratio control method and apparatus.
  • a ventilator needs to provide an air with adjustable oxygen concentration according to user needs.
  • a pneumatic electronically controlled ventilator realized by a dual proportional valve, if mixing oxygen is required, two proportional valves need to be opened at the same time, and two proportional valves are required.
  • the opening size and opening time directly affect the oxygen concentration of the output gas. Since the opening and flow rate curves of the proportional valve are changed by the pressure of the air supply, the gas oxygen concentration control given by the double proportional valve ventilation will shift.
  • the minimum flow rate that the proportional valve can give is determined by the proportional valve.
  • the object of the present invention is to provide a ventilator gas ratio control method and apparatus for monitoring the oxygen concentration of a given gas in real time, and performing double closed loop control on the oxygen concentration to give a given gas oxygen concentration and a set oxygen concentration.
  • a ventilator gas ratio control method comprising: a: obtaining an air proportional valve of the ventilator and The relationship between the opening degree of the oxygen proportional valve and the flow rate; b: controlling the air proportional valve and the oxygen proportional valve according to the relationship between the opening degree and the flow rate and the preset oxygen concentration value; and C: according to the current oxygen concentration value and the The air ratio valve and the oxygen proportional valve are finely adjusted by a preset oxygen concentration value.
  • the step a includes: verifying the air proportional valve and the oxygen proportional valve to determine an opening degree and a flow rate relationship of the air proportional valve and the oxygen proportional valve. Further, before the step b is performed, the control method further includes: comparing the current oxygen concentration value with the preset oxygen concentration value to determine whether the mixed oxygen control is required, and if yes, performing step 1). Further, the determining whether the hybrid oxygen control is required comprises: the ventilator monitoring the output air volume and the oxygen amount in real time, and calculating the current oxygen concentration value.
  • the control method further includes: determining whether the current control state of the ventilator is capacity control, and if yes, performing step 0. Further, after performing step c, the control method further includes: determining, according to the adjusted oxygen concentration value and the preset oxygen concentration value, whether the mixed oxygen control is up to standard, and if yes, the gas proportional control ends. If not, coarsely adjust the air proportional valve and the oxygen proportional valve, then return to step c.
  • a ventilator gas proportional control device includes: an acquisition module: configured to acquire an opening degree flow rate relationship between an air proportional valve and an oxygen proportional valve of the ventilator; and a control module: a relationship between the opening degree and the flow rate and a preset oxygen concentration value to control the air proportional valve and the oxygen proportional valve; and a fine adjustment module: for using the current oxygen concentration value and the preset oxygen concentration value Adjust the air proportional valve and the oxygen proportional valve.
  • the obtaining module comprises: a calibration module: verifying the air proportional valve and the oxygen proportional valve to determine a relationship between an opening degree and a flow rate of the air proportional valve and the oxygen proportional valve.
  • control module includes: a first determining module, configured to determine, according to the preset oxygen concentration value, whether hybrid oxygen control is required.
  • first determining module includes: a monitoring module, configured to monitor, in real time, the amount of air and oxygen output by the ventilator, and calculate a current oxygen concentration value; and a calculation module, configured to calculate a current oxygen concentration value.
  • fine adjustment module includes: a second determining module, configured to determine whether the current control state of the ventilator is capacity control.
  • FIG. 1 is a main flow chart of a ventilator gas proportional control method according to the present invention
  • FIG. 2 is a graph showing a relationship between an opening degree and a flow rate of an air proportional valve and an oxygen proportional valve according to the present invention
  • 3 is a detailed flow chart of a ventilator gas proportional control method according to the present invention
  • FIG. 4 is a schematic structural view of a ventilator gas proportional control device according to the present invention.
  • a ventilator gas ratio control method includes: a: obtaining an air proportional valve and an oxygen ratio of the ventilator The relationship between the opening degree of the valve and the flow rate; b: controlling the air proportional valve and the oxygen proportional valve according to the relationship between the opening degree and the flow rate and the preset oxygen concentration value; and c: according to the current oxygen concentration value and the preset The oxygen concentration value fine-tunes the air proportional valve and the oxygen proportional valve.
  • the relationship between the opening degree and the flow rate of the air proportional valve and the oxygen proportional valve of the ventilator is obtained by verifying the air proportional valve and the oxygen proportional valve, as shown in FIG. 2, FIG.
  • FIG. 3 is a specific flowchart of a method for controlling the gas ratio of the ventilator according to the present invention.
  • the standard is the preset oxygen concentration value.
  • 4 is a ventilator gas proportional control device implementing the above method. Referring to FIG. 4
  • a ventilator gas proportional control device includes: an acquisition module 401: an air proportional valve and an oxygen proportional valve for acquiring the ventilator The opening degree flow rate relationship; the control module 403: configured to control the air proportional valve and the oxygen proportional valve according to the relationship between the opening degree and the flow rate and the preset oxygen concentration value; and the fine adjustment module 405: for using the current oxygen concentration value And adjusting the air proportional valve and the oxygen proportional valve with the preset oxygen concentration value.
  • the obtaining module comprises: a calibration module (not shown): the air proportional valve and the oxygen proportional valve are verified to determine the relationship between the opening degree and the flow rate of the air proportional valve and the oxygen proportional valve.
  • control module includes: a first determining module (not shown) for determining whether the mixed oxygen control is required according to the preset oxygen concentration value.
  • first determining module includes: a monitoring module (not shown), configured to monitor, in real time, the amount of air and oxygen output by the ventilator, and calculate a current oxygen concentration value; and a calculation module, configured to calculate Current oxygen concentration value.
  • fine adjustment module includes: a second determining module (not shown) for determining whether the current control state of the ventilator is capacity control.
  • the technical solution of the present invention is used for real-time monitoring of the oxygen concentration of the given gas, and the double closed-loop control of the oxygen concentration, so that the given gas oxygen concentration is consistent with the set oxygen concentration, and the mixing is improved.
  • the accuracy of oxygen control is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Where is the spirit and principle of the present invention Any modifications, equivalent substitutions, improvements, etc. made therein are intended to be included within the scope of the present invention.

Abstract

La présente invention concerne un procédé et un dispositif pour réguler le rapport de gaz d'un appareil respiratoire. Le procédé comprend : a : l'acquisition d'une relation ouverture-débit d'une valve de rapport d'air et d'une valve de rapport d'oxygène de l'appareil respiratoire ; b : la commande de la valve de rapport d'air et la valve de rapport d'oxygène en fonction des relations ouverture-débit et d'une valeur prédéfinie de concentration d'oxygène ; et c : l'ajustement fin de la valve de rapport d'air et la valve de rapport d'oxygène en fonction d'une valeur actuelle de concentration d'oxygène et de la valeur prédéfinie de concentration d'oxygène. Le dispositif de commande comprend : un module d'acquisition (401), configuré pour l'acquisition de la relation ouverture-débit d'une valve de rapport d'air et une valve de rapport d'oxygène de l'appareil respiratoire ; un module de commande (403), configuré pour commander la valve de rapport d'air et la valve de rapport d'oxygène ; et un module d'ajustement fin (405), configuré pour l'ajustement fin de la valve de rapport d'air et la valve de rapport d'oxygène. Grâce au procédé et au dispositif, la concentration d'oxygène du gaz peut être surveillée en temps réel, de manière à effectuer une commande à double boucle sur la concentration d'oxygène, de sorte que la concentration d'oxygène du gaz fourni soit la même que la concentration d'oxygène définie, de manière à améliorer la précision de la commande de mélange d'oxygène.
PCT/CN2011/084698 2010-12-31 2011-12-26 Procédé et dispositif pour réguler le rapport de gaz d'un appareil respiratoire WO2012089092A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BR112012032964A BR112012032964A2 (pt) 2010-12-31 2011-12-26 método e dispositivo para controle de razão de gás de máquina de respiração

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201010620699.3 2010-12-31
CN201010620699.3A CN102266630B (zh) 2010-12-31 2010-12-31 一种呼吸机气体比例控制方法及装置

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WO (1) WO2012089092A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114209955A (zh) * 2021-11-16 2022-03-22 北京谊安医疗系统股份有限公司 一种比例阀开机自检方法
US11918748B2 (en) 2012-04-05 2024-03-05 Fisher & Paykel Healthcare Limited Respiratory assistance apparatus

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CN102266630B (zh) * 2010-12-31 2014-10-01 北京谊安医疗系统股份有限公司 一种呼吸机气体比例控制方法及装置
CN103893891B (zh) * 2012-12-26 2016-03-02 北京谊安医疗系统股份有限公司 一种呼吸机非线性比例阀的校验方法
CN104874057A (zh) * 2014-02-28 2015-09-02 北京谊安医疗系统股份有限公司 呼吸机的故障检测方法及系统
CN104834326B (zh) * 2015-04-01 2017-12-19 深圳市科曼医疗设备有限公司 呼吸机氧浓度控制方法、装置和系统
CN105563349A (zh) * 2016-01-27 2016-05-11 北京雷蒙赛博机电技术有限公司 一种用于前混合式磨料水射流设备的磨料浓度控制系统
CN105963837B (zh) * 2016-06-08 2019-02-22 湖南明康中锦医疗科技发展有限公司 一种空氧混合控制的呼吸机及控制方法
CN107152551B (zh) * 2017-05-11 2019-04-05 广东卓信环境科技股份有限公司 一种调压控制方法及调压控制装置
CN110874106B (zh) * 2018-08-31 2022-09-02 伊利诺斯工具制品有限公司 用于回流焊炉的气体控制系统和方法
CN109443776A (zh) * 2018-10-30 2019-03-08 中船动力研究院有限公司 一种气体浓度调节方法
CN110652702B (zh) * 2019-09-30 2021-07-20 深圳市俄中博医医疗科技有限公司 间歇性高低氧训练方法、装置和存储介质
CN111366692B (zh) * 2020-04-16 2022-11-22 北方工业大学 气体环境参数监测系统及方法
CN113244496A (zh) * 2021-04-26 2021-08-13 泰州市久信医疗科技有限公司 呼吸机输出氧浓度控制方法及呼吸机输入气源对氧气输出浓度贡献值的计算方法
CN114904115B (zh) * 2022-06-01 2023-05-23 广州和普乐健康科技有限公司 一种呼吸支持设备氧浓度自动控制方法及设备

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Publication number Priority date Publication date Assignee Title
US11918748B2 (en) 2012-04-05 2024-03-05 Fisher & Paykel Healthcare Limited Respiratory assistance apparatus
CN114209955A (zh) * 2021-11-16 2022-03-22 北京谊安医疗系统股份有限公司 一种比例阀开机自检方法
CN114209955B (zh) * 2021-11-16 2023-07-18 北京谊安医疗系统股份有限公司 一种比例阀开机自检方法

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CN102266630B (zh) 2014-10-01
BR112012032964A2 (pt) 2016-11-22

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