CN106902431B - 涡轮麻醉机pcv通气模式中斜坡上升时间的控制方法 - Google Patents

涡轮麻醉机pcv通气模式中斜坡上升时间的控制方法 Download PDF

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CN106902431B
CN106902431B CN201510971328.2A CN201510971328A CN106902431B CN 106902431 B CN106902431 B CN 106902431B CN 201510971328 A CN201510971328 A CN 201510971328A CN 106902431 B CN106902431 B CN 106902431B
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华威
韩文兰
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Beijing Aeonmed Co Ltd
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    • 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
    • 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
    • A61M16/01—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes specially adapted for anaesthetising
    • 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
    • A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
    • 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
    • A61M16/0051—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes with alarm devices
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/20—Control of fluid pressure characterised by the use of electric means
    • 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
    • A61M16/0057—Pumps therefor
    • A61M16/0066—Blowers or centrifugal pumps
    • 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
    • A61M16/0057—Pumps therefor
    • A61M16/0066—Blowers or centrifugal pumps
    • A61M16/0069—Blowers or centrifugal pumps the speed thereof being controlled by respiratory parameters, e.g. by inhalation
    • 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
    • A61M16/021—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes operated by electrical means
    • A61M16/022—Control means therefor
    • A61M16/024—Control means therefor including calculation means, e.g. using a processor
    • 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
    • A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
    • A61M2016/0027—Accessories therefor, e.g. sensors, vibrators, negative pressure pressure meter
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3331—Pressure; Flow

Abstract

本发明涉及一种涡轮麻醉机PCV通气模式中斜坡上升时间的控制方法，包括：将设置的斜坡上升时间的1/4作为e的指数函数时间常数；根据指数函数时间常数确定控制压力值；由设定的控制压力值提升涡轮压力。在本发明的控制方法的控制下，涡轮压力在上升开始阶段比较迅速，但在接近和达到目标压力时很平滑。这种控制方式有利于病人肺部气泡和新鲜气体进行充分的气体交换，达到了很好的效果。

Description

涡轮麻醉机PCV通气模式中斜坡上升时间的控制方法
技术领域
本发明涉及麻醉机控制领域，特别涉及一种涡轮麻醉机PCV通气模式中斜坡上升时间的控制方法。
背景技术
涡轮麻醉机是以涡轮为驱动气源的一种麻醉机类型，在压力控制通气PCV模式中，开始压力上升阶段(即Tslope阶段)是PCV通气模式中重要的性能指标，它反映了通气过程中能够在设定时间内快速达到目标压力。通过调节Tslope时间可以控制达到目标压力值的快慢程度。
在目前的涡轮PCV控制方法中，控制Tslope压力上升过程，主要是将目标压力在指定上升时间内进行分段，每段时间内逐步累加控制压力以最终达到目标设置压力的效果。这种方式的问题在于控制压力是线性上升的，当Tslope时间设置较长时，其达到目标值的时间也较长，这使得在麻醉机临床使用时，病人不能快速获得到目标通气效果，使PCV通气模式的临床效果降低，鉴于这种情况，需要进行技术上的改进。
发明内容
本发明的目的在于克服现有的涡轮PCV控制方法中，斜坡上升时间较长，病人不能快速获得到目标通气效果，使PCV通气模式的临床效果降低的缺陷，从而提供一种能够迅速提升涡轮压力的斜坡上升时间控制方法。
为了实现上述目的，本发明提供了一种涡轮麻醉机PCV通气模式中斜坡上升时间的控制方法，包括：
步骤1)、设定e的指数函数时间常数；其中，
将设置的斜坡上升时间的1/4作为e的指数函数时间常数；
步骤2)、根据步骤1)所设定的e的指数函数时间常数确定控制压力值；其中，控制压力值的计算公式为：
TCon＝1/(Tslope/4)；
Praise＝PTarget*(1-exp(0-PassTime*TCon))；
其中，Tslope为设置的斜坡上升时间，Tslope/4为e的指数函数的时间常数，TCon为中间变量，PTarget为设置的目标压力，Praise为计算输出的控制压力值，PassTime表示从涡轮压力上升阶段开始已经经过的时间；
步骤3)、由步骤2)设定的控制压力值提升涡轮压力。
本发明的优点在于：
在本发明的控制方法的控制下，涡轮压力在上升开始阶段比较迅速，但在接近和达到目标压力时很平滑。这种控制方式有利于病人肺部气泡和新鲜气体进行充分的气体交换，达到了很好的效果。
附图说明
图1是涡轮PCV通气模式中上升阶段的控制压力波形图。
具体实施方式
现结合附图对本发明作进一步的描述。
本发明的涡轮压力上升阶段的控制方法的基本原理是：采用e的指数函数计算控制压力值，根据该控制压力值实现涡轮压力的上升。
由于e的指数函数的特性，涡轮压力将会很快上升到目标压力的80％，然后再平缓达到目标压力值，吸气压力波形表现为吸气压力波上升支较陡，平台时间长，没有尖峰。
本发明的方法包括：
步骤1)、设定e的指数函数时间常数；
在本发明中，将Tslope斜坡上升时间的1/4作为e的指数函数时间常数。
步骤2)、根据步骤1)所设定的e的指数函数时间常数确定控制压力值；其中，控制压力值的计算公式为：
TCon＝1/(Tslope/4)；
Praise＝PTarget*(1-exp(0-PassTime*TCon))；
其中，Tslope为设置的斜坡上升时间，(Tslope/4)即为e的指数函数的时间常数，TCon为中间变量，PTarget为设置的目标压力，Praise为计算输出的控制压力值，PassTime表示从涡轮压力上升阶段开始已经经过的时间。当PassTime达到设置的斜坡上升时间Tslope时，也就是达到4倍的时间常数之后，压力值Praise将达到目标压力值Ptarget的98％。
步骤3)、由步骤2)设定的控制压力值提升涡轮压力。
下列的表1中给出了涡轮PCV通气模式中上升阶段的控制压力计算数据，其中的PTarget设置为10cmH2O，Tslope设置为1秒。从表中可以看出当到达Tslope最大时间1秒时，计算压力值为9.77cmH2O，即为目标压力10cmH2O的98％。
表1
图1是涡轮PCV通气模式中上升阶段的控制压力波形图。从该控制压力波形图可以看出，控制压力在上升开始阶段比较迅速，但在接近和达到目标压力时很平滑。这种控制方式有利于病人肺部气泡和新鲜气体进行充分的气体交换，达到了很好的效果。
最后所应说明的是，以上实施例仅用以说明本发明的技术方案而非限制。尽管参照实施例对本发明进行了详细说明，本领域的普通技术人员应当理解，对本发明的技术方案进行修改或者等同替换，都不脱离本发明技术方案的精神和范围，其均应涵盖在本发明的权利要求范围当中。

Claims (1)

1.一种涡轮麻醉机PCV通气模式中斜坡上升时间的控制方法，包括：
步骤1)、设定e的指数函数的时间常数；其中，
将设置的斜坡上升时间的1/4作为e的指数函数的时间常数；
步骤2)、根据步骤1)所设定的e的指数函数的时间常数确定控制压力值；其中，控制压力值的计算公式为：
TCon＝1/(Tslope/4)；
Praise＝PTarget*(1-exp(0-PassTime*TCon))；
其中，Tslope为设置的斜坡上升时间，Tslope/4为e的指数函数的时间常数，TCon为中间变量，PTarget为设置的目标压力，Praise为控制压力值，PassTime表示从涡轮压力上升阶段开始已经经过的时间；
步骤3)、由步骤2)确定的控制压力值提升涡轮压力。
CN201510971328.2A 2015-12-22 2015-12-22 涡轮麻醉机pcv通气模式中斜坡上升时间的控制方法 Active CN106902431B (zh)

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CN201510971328.2A CN106902431B (zh) 2015-12-22 2015-12-22 涡轮麻醉机pcv通气模式中斜坡上升时间的控制方法
PCT/CN2016/079346 WO2017107346A1 (zh) 2015-12-22 2016-04-15 涡轮麻醉机pcv通气模式中斜坡上升时间的控制方法
EA201891480A EA034916B1 (ru) 2015-12-22 2016-04-15 Способ контролирования времени увеличения наклона кривой давления в режиме вентиляции pcv в турбинном аппарате для анестезии
EP16877160.8A EP3395388A4 (en) 2015-12-22 2016-04-15 Method for controlling slope rise time in pcv ventilation mode of turbine anaesthesia apparatus

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CN111135412B (zh) * 2020-01-20 2022-01-25 深圳市科曼医疗设备有限公司 呼吸机中压力控制方法、装置、呼吸机及存储介质
WO2022232700A1 (en) * 2021-04-30 2022-11-03 10X Genomics, Inc. Multi-channel pressure control systems and methods

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