CN112169103A - Method for adaptively adjusting voltage increasing and decreasing speed, application of method and respiration support equipment - Google Patents

Method for adaptively adjusting voltage increasing and decreasing speed, application of method and respiration support equipment Download PDF

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CN112169103A
CN112169103A CN202011030638.1A CN202011030638A CN112169103A CN 112169103 A CN112169103 A CN 112169103A CN 202011030638 A CN202011030638 A CN 202011030638A CN 112169103 A CN112169103 A CN 112169103A
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buck
time
speed
boost
pressure
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戴征
黄皓轩
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Hunan Micomme Zhongjin Medical Technology Development Co Ltd
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Hunan Micomme Zhongjin Medical Technology Development 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
    • A61M16/0003—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
    • A61M16/0003—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
    • 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
    • A61M2230/00—Measuring parameters of the user
    • A61M2230/40—Respiratory characteristics
    • A61M2230/46—Resistance or compliance of the lungs

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  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Pulmonology (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Abstract

The invention provides a method for adaptively adjusting a buck-boost speed, application thereof and respiratory support equipment, wherein the method for adaptively adjusting the buck-boost speed comprises the steps of measuring an initial buck-boost speed V0 and a buck-boost time T0 under the conditions of initial air resistance R0 and compliance C0 of a user, then obtaining the actual buck-boost time T1 of the user by a processor according to the therapeutic state of the respiratory support equipment, so as to obtain a buck-boost time consumption difference Td which is T1-T0, and measuring whether to finish adjustment by the processor according to the Td/T0 < X%, and if so, finishing the regulation of the buck-boost speed; if not, performing voltage increase and decrease at the voltage increase and decrease speed of V1-V-M V0 in the next respiratory cycle of the user, and circulating the steps until the condition that Td/T0 is less than X% is met, and stopping adjusting the voltage increase and decrease speed.

Description

Method for adaptively adjusting voltage increasing and decreasing speed, application of method and respiration support equipment
Technical Field
The invention relates to the technical field of medical instruments, in particular to a method for adaptively adjusting the voltage rising and reducing speed, application of the method and respiratory support equipment.
Background
When the breathing support device works, a user needs to provide high pressure when inhaling and low pressure when exhaling, the speed of rising from the low pressure to the high pressure is the boosting speed, and correspondingly, the faster the speed, the shorter the time required for rising from the low pressure to the high pressure. The boost speed of the prior art (CN108310563 breathing support equipment) is adjusted by manually setting different gears, and is usually adjustable in 1-6 gears, but the fixed 6 gears are usually difficult to reach the best adaptation degree, and the boost gear can be found out properly by repeatedly adjusting.
When the user uses the breathing support equipment, due to the difference of individuals, some users need to boost quickly, some users cannot tolerate the quick boosting, most of the existing breathing support equipment cannot adjust the boosting speed, only one fixed boosting and reducing speed is given, and the breathing machine performs the boosting and reducing regulation according to the same parameters no matter how the breathing mechanics parameters such as the air resistance, the compliance and the like of the user change, so that the patient can breathe uncomfortably and the recovery of the patient is not facilitated.
Traditionally, when the respiratory mechanics parameter of a user changes, the actual pressure rise and pressure fall time consumption is necessarily influenced, and even the pressure cannot reach the expected value. Such as: the air resistance of the user is increased from 5cmH2O to 20cmH2O, at this time, if the parameters of the breathing machine are constant, the phenomenon that the pressure change is slowed down inevitably occurs, the pressure change can be completed within 200ms originally, 400ms or even longer is needed now, the pressure waveform change follows, the platform pressure maintaining time is shortened, and the user experience is reduced, as shown in fig. 1, the solid line in fig. 1 is the original pressure change curve, and the dotted line is the pressure change curve after the air resistance change, and as can be seen from the figure, the pressure curve represented by the dotted line, the platform pressure is obviously reduced, and the pressure increasing and reducing time is obviously prolonged.
Therefore, there is a need for a method for adaptively adjusting the voltage boosting and reducing speed, which can adjust the voltage boosting speed according to individual characteristics of a patient, so that the patient can feel more comfortable in breathing.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a method for adaptively adjusting the voltage boosting and reducing speed, application thereof and a respiration support device, which can adjust the voltage boosting speed according to individual characteristics of a patient so that the patient can breathe more comfortably.
In order to achieve the above object, the present invention provides a method for adaptively adjusting a buck-boost speed, which comprises the steps of:
s1: under the conditions that the air resistance of the user is R0 and the compliance is C0, the initial pressure increasing and reducing speed is V0, and at the moment, the pressure increasing and reducing time of the respiratory support device is T0;
s2: the ventilator is in a treatment state, when the voltage increasing and decreasing speed is V, the processor acquires the actual voltage increasing and decreasing time T of the user, and at the time, the voltage increasing and decreasing time-consuming deviation Td is T-T0;
s3: setting a pressure deviation threshold value X%, and judging whether the Td/T0 is less than X% by the processor;
s31: if so, finishing the adjustment and maintaining the current voltage boosting and reducing speed V;
s32: if not, performing voltage increase and decrease at a voltage increase and decrease speed of V1-V-M V0 in the next respiratory cycle of the user, wherein M is Td/T0, and the voltage increase and decrease time is T1;
s321: returning to step S2, at this time, V is V1, the respiratory support apparatus performs the step-up/step-down adjustment using V1, calculates a new step-up/step-down time consumption deviation Td as T1-T0, and repeats this cycle until the condition of | Td |/T0< X% is satisfied, and stops adjusting the step-up/step-down speed.
As a further improvement of the above solution, in step S1, the initial step-up and step-down speed is measured under the condition that the user has a gas resistance R0 of 5cmH2O and a compliance C0 of 50 ml.
As a further improvement of the above, in step S2, when Td is a positive value, it means that the step-up/down time is longer, and when Td is a negative value, it means that the step-up/down time is shorter.
As a further improvement of the above scheme, in step S3, the pressure deviation threshold X% is 10%, and the pressure deviation threshold 10% is obtained by comparing multiple sets of actual buck-boost time in actual use with the initial buck-boost time.
As a further improvement of the above solution, in step S32, M is Td/T0, because the buck-boost speed V and the buck-boost time T are in a linear relationship, and therefore, the change percentage of the buck-boost time T corresponds to the change percentage of the buck-boost speed V.
The invention also provides a method for estimating the air resistance, which is to obtain the real-time air resistance R1-R0 + (Pmax-Pmax0) by taking the difference between the maximum value Pmax of the respiratory pressure reached by the self-adaptive V1 pressure increasing and decreasing speed and the maximum value Pmax0 of the respiratory pressure reached by the V0 pressure increasing and decreasing speed as the air resistance difference from the minimum value Pmin of the respiratory pressure of the user in the same time under the model that the air resistance is R0, wherein V0 is the pressure increasing and decreasing speed when the initial air resistance is R0; v1 is the step-up and step-down speed obtained by the adaptive adjustment of the user during the actual use of the respiratory support device.
As a further improvement of the above scheme, the initial gas resistance R0 was 5cmH 2O.
The invention also provides a respiration support device adopting the method for adaptively adjusting the buck-boost speed, which comprises a host, a processor and a memory, wherein the processor and the memory are arranged in the host, the memory is used for storing buck-boost time, buck-boost time-consuming deviation, buck-boost speed and personal information of a user, the processor is used for acquiring and calculating the buck-boost time and the buck-boost time-consuming difference, the respiration support device also comprises a pressure sensor and a timer, the pressure sensor is used for detecting a pressure value in an air passage of the host, the timer is used for recording the buck-boost time, and the timer, the pressure sensor and the memory are electrically connected with the processor.
As a further improvement of the above solution, the personal information of the user includes personal social information and respiratory mechanics parameters, specifically, the respiratory mechanics parameters are the air resistance R and the compliance C.
Due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. the method for adaptively adjusting the voltage boosting and reducing speed comprises the steps of firstly measuring an initial voltage boosting and reducing speed V0 and a voltage boosting and reducing time T0 under the conditions of an initial air resistance R0 and a compliance C0 of a user, then obtaining the actual voltage boosting and reducing time T1 of the user by a processor according to the fact that a respiratory support device is in a treatment state, obtaining a voltage boosting and reducing consumption time difference Td which is T1-T0, measuring whether adjustment is finished according to the fact that the ratio of the voltage boosting and reducing consumption time difference Td to the initial voltage boosting and reducing time T0 is smaller than X%, and if the adjustment is finished, finishing the voltage boosting and reducing speed adjustment; if not, performing pressure increasing and decreasing at the pressure increasing and decreasing speed of V1-V-M V0 in the next breathing cycle of the user, and circulating the pressure increasing and decreasing speed until the condition that Td/T0 is less than X% is met, and dynamically adjusting the pressure increasing and decreasing speed of the breathing support device based on the actual pressure increasing and decreasing time of the user, so that the pressure increasing and decreasing time of the breathing support device is basically the same in different breathing mechanics parameter states, and the pressure curve is ensured not to deform basically according to the solid line part in the graph 1, namely the platform pressure maintaining time is longer, and the user experience is better.
2. The invention relates to a method for estimating air resistance, which is characterized in that under the condition that the air resistance is an R0 model, in the same time, the difference between the maximum value Pmax of the respiratory pressure reached by adopting a self-adaptive V1 pressure increasing and decreasing speed and the Pmax0 reached by adopting a V0 pressure increasing and decreasing speed is the air resistance difference from the minimum value Pmin of the respiratory pressure of a user, so that the real-time air resistance R1 is R0+ (Pmax-Pmax0), and the difference between the maximum value Pmax of the respiratory pressure reached by adopting the self-adaptive V1 pressure increasing and decreasing speed and the Pmax0 reached by adopting the V0 pressure increasing and decreasing speed is the air resistance difference, so that the real-time air resistance is estimated; compared with the traditional mode, the method for estimating the air resistance adopts a breathing circuit pressure formula, uses sampling values of the airway pressure p and the flow velocity v for many times, and directly estimates the air resistance R by using a least square method.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of changes in pressure waveform with changes in patient impedance;
fig. 2 is a flowchart of a method for adaptively adjusting a buck-boost speed according to the present invention.
Detailed Description
First, it should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention. And can be adjusted as needed by those skilled in the art to suit particular applications.
Next, it should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "inside", "outside", and the like are based on the direction or positional relationship shown in the drawings, which are merely for convenience of description, and do not indicate or imply that a device or a member must have a specific orientation, be configured in a specific orientation, and operate, and thus, should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected" and "connected" should be interpreted broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Furthermore, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", "third" may explicitly or implicitly include one or more of the features. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The invention is further described below with reference to the following figures and specific embodiments:
example 1:
referring to fig. 2, the invention provides a method for adaptively adjusting a buck-boost speed, which comprises the following steps:
s1: under the conditions that the air resistance of the user is R0 and the compliance is C0, the initial pressure increasing and reducing speed is V0, and at the moment, the pressure increasing and reducing time of the respiratory support device is T0;
s2: the ventilator is in a treatment state, when the voltage increasing and decreasing speed is V, the processor acquires the actual voltage increasing and decreasing time T of the user, and at the time, the voltage increasing and decreasing time-consuming deviation Td is T-T0;
s3: setting a pressure deviation threshold value X%, and judging whether the Td/T0 is less than X% by the processor;
s31: if so, finishing the adjustment and maintaining the current voltage boosting and reducing speed V;
s32: if not, performing voltage increase and decrease at a voltage increase and decrease speed of V1-V-M V0 in the next respiratory cycle of the user, wherein M is Td/T0, and the voltage increase and decrease time is T1;
s321: returning to step S2, when V is V1, the respiratory support apparatus performs the step-up/step-down voltage adjustment with V1, calculates a new step-up/step-down voltage consumption deviation Td as T1-T0, and then loops until the condition of | Td |/T0< X% is satisfied, and stops adjusting the step-up/step-down voltage speed; according to the method for adaptively adjusting the voltage increasing and decreasing speed, the voltage increasing and decreasing speed of the respiratory support equipment is dynamically adjusted on the basis of the actual voltage increasing and decreasing time of a user, so that the time consumed for voltage increasing and decreasing of the respiratory support equipment is basically the same under different respiratory mechanical parameter states, the pressure curve is basically not deformed according to the solid line part in the graph 1, namely the platform voltage maintaining time is longer, and the user experience is better.
As a preferred embodiment, in step S1, the initial buck-boost speed is measured under the condition that the air resistance R0 of the user is 5cmH2O and the compliance C0 is 50ml, and for the same user, when the respiratory support device is used for the first time, the default air resistance R0 is 5cmH2O and the compliance C0 is 50ml, the initial buck-boost speed measured under the condition that the default air resistance R0 is 5cmH2O and the default compliance C0 is 50ml are used, when the user uses the device again, since the memory records the buck-boost speed and the buck-boost time used by the user last time, the initial buck-boost speed at the time of the user use is based on the previous buck-boost speed, the buck-boost time is the same, and so on, each time the user uses the respiratory support device, the buck-boost speed and the buck-boost time are used as the initial conditions, such setting that the respiratory support device can adapt to the respiratory mechanics parameters of the user more quickly, bringing a better use experience to the user.
In a preferred embodiment, in step S2, the increase/decrease time is longer when Td is a positive value, and the increase/decrease time is shorter when Td is a negative value.
In a preferred embodiment, in step S3, the pressure deviation threshold X% is 10%, and the pressure deviation threshold 10% is obtained by comparing multiple sets of actual pressure increasing and decreasing times in actual use with the initial pressure increasing and decreasing time.
As a preferred embodiment, in step S32, M is Td/T0, because the voltage step-up and step-down speed V and the voltage step-up and step-down time T are in a linear relationship, the change percentage of the voltage step-up and step-down time T corresponds to the change percentage of the voltage step-up and step-down speed V, and the change percentage of the voltage step-up and step-down speed V is obtained by the linear relationship between the voltage step-up and step-down speed and the voltage step-up and step-down time T, so that the change percentage of the voltage step-up and step-down speed V is simple and practical.
Example 2:
respiratory support devices provide fresh air primarily to patients with respiratory disorders, where lung compliance and pulmonary air resistance are two important parameters. Lung compliance and lung resistance (i.e., air resistance) not only characterize the condition of the patient's lungs, but can also be used to build a mathematical model of the breathing circuit that is critical to the accuracy and precision of pressure-controlled ventilation and its extended ventilation pattern. At present, the compliance of the lung and the resistance of the duct are difficult to calculate directly, and the flow rate value and the pressure value flowing through a breathing circuit are generally used for estimation. In the estimation process, generally, a pressure value obtained by a pressure sensor at an exhalation end is taken as airway pressure, and a difference between flow values obtained by a flow sensor at an inhalation end and a flow sensor at an exhalation end is taken as a flow rate value.
In view of the above, the present invention further provides a method for estimating a gas resistance, where a difference between a maximum respiratory pressure Pmax reached by a adaptively adjusted V1 buck-boost speed and a Pmax0 reached by a V0 buck-boost speed is a gas resistance difference from a minimum respiratory pressure Pmin at the same time in a model with a gas resistance R0, so as to obtain a real-time gas resistance R1 — R0+ (Pmax-Pmax0), where V0 is the buck-boost speed when an initial gas resistance is R0; v1 is the step-up and step-down speed obtained by the adaptive adjustment of the user during the actual use of the respiratory support device. The method for estimating the air resistance has the advantages of simple principle, simple calculation and low requirement on hardware of the respiratory support equipment.
As a preferred example, the initial gas resistance R0 was 5cmH 2O.
Since the compliance of the lung and the resistance of the lung (i.e., the air resistance) jointly characterize the condition of the lung of the patient, after finding the qualified pressure increasing and decreasing speed V1, the respiratory support device needs to estimate the air resistance and the respiratory parameter compliance C of the user according to the formula
Figure BDA0002703504800000061
Calculating a respiratory compliance parameter of the user, wherein Δ V is the inspiratory tidal volume, according to the formula
Figure BDA0002703504800000071
Is calculated to obtain, wherein TiFor the length of inspiration, Δ P represents the pressure change of one breath, i.e., Δ P ═ Pmax-Pmin，PmaxRepresenting the maximum pressure, P, collected during inspirationminIndicating production during inspirationMinimum pressure build-up.
Example 3:
the invention also provides a respiration support device adopting the method for adaptively adjusting the voltage boosting and reducing speed, which comprises a host, a processor and a memory, wherein the processor and the memory are arranged in the host, the memory is used for storing the voltage boosting and reducing time, the voltage boosting and reducing time consumption deviation, the voltage boosting and reducing speed and personal information of a user, the processor is used for acquiring and calculating the voltage boosting and reducing time and the voltage boosting and reducing time consumption difference, the respiration support device also comprises a pressure sensor and a timer, the pressure sensor is used for detecting a pressure value in an air passage of the host, the timer is used for recording the voltage boosting and reducing time, and the timer, the pressure sensor and the memory are electrically connected with the processor.
As a preferred embodiment, the personal information of the user comprises social information and breathing mechanics parameters of the individual, in particular, breathing mechanics parameters of the individual are the air resistance R and the compliance C.
According to the breathing support equipment provided by the invention, as the memory can record the social information, the air resistance R and the compliance C of the current user and the pressure increasing and decreasing speed V of the user in the last use, when the user uses the breathing support equipment next time, when the processor judges that the user is the same person, the processor calls the breathing mechanics parameter of the user in the last use as an initial value, particularly the last pressure increasing and decreasing speed V1, the V0 is not used as the initial value any more, and the like, for the same user, the breathing support equipment can record the personal information of the user in each use, so that the breathing support equipment can adapt to the breathing mechanics parameter of the user more quickly, and better use experience is brought to the user.
The foregoing is a detailed description of the invention, and specific examples are used herein to explain the principles and implementations of the invention, the above description being merely intended to facilitate an understanding of the principles and core concepts of the invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims (9)

1. A method for adaptively adjusting the voltage increasing and decreasing speed is characterized by comprising the following steps:
s1: under the conditions that the air resistance of the user is R0 and the compliance is C0, the initial pressure increasing and reducing speed is V0, and at the moment, the pressure increasing and reducing time of the respiratory support device is T0;
s2: the ventilator is in a treatment state, when the voltage increasing and decreasing speed is V, the processor acquires the actual voltage increasing and decreasing time T of the user, and at the time, the voltage increasing and decreasing time-consuming deviation Td is T-T0;
s3: setting a pressure deviation threshold value X%, and judging whether the Td/T0 is less than X% by the processor;
s31: if so, finishing the adjustment and maintaining the current voltage boosting and reducing speed V;
s32: if not, performing voltage increase and decrease at a voltage increase and decrease speed of V1-V-M V0 in the next respiratory cycle of the user, wherein M is Td/T0, and the voltage increase and decrease time is T1;
s321: returning to step S2, at this time, V is V1, the respiratory support apparatus performs the step-up/step-down adjustment using V1, calculates a new step-up/step-down time consumption deviation Td as T1-T0, and repeats this cycle until the condition of | Td |/T0< X% is satisfied, and stops adjusting the step-up/step-down speed.
2. The method of claim 1, wherein in step S1, the initial buck-boost speed is measured under the condition that the user has a gas resistance R0 of 5cmH2O and a compliance of C050 ml.
3. The method as claimed in claim 1 or 2, wherein in step S2, when Td is positive, it indicates that the step up/down time is longer, and when Td is negative, it indicates that the step up/down time is shorter.
4. The method of claim 1 or 2, wherein in the step S3, the pressure deviation threshold X% is 10%, and the pressure deviation threshold 10% is obtained by comparing multiple sets of actual buck-boost times in actual use with the initial buck-boost time.
5. The method of claim 1 or 2, wherein in the step S32, M is Td/T0, so that the buck-boost speed V and the buck-boost time T are linear, and therefore the variation percentage of the buck-boost time T corresponds to the variation percentage of the buck-boost speed V.
6. A method for estimating the air resistance, characterized in that, the difference between the maximum value Pmax of the respiratory pressure reached by the V1 buck-boost speed obtained by the method for adaptively adjusting the buck-boost speed according to any one of claims 1 to 5 and the maximum value Pmax0 of the respiratory pressure reached by the V0 buck-boost speed is the air resistance difference, starting from the minimum value Pmin at the same time under the model of the air resistance R0, so as to obtain the real-time air resistance R1-R0 + (Pmax-Pmax0), wherein V0 is the buck-boost speed at the time when the initial air resistance is R0; v1 is the step-up and step-down speed obtained by the adaptive adjustment of the user during the actual use of the respiratory support device.
7. The method of claim 6, wherein the initial air resistance R0 is 5cmH 2O.
8. A respiratory support device adopting the method for adaptively adjusting the buck-boost speed according to any one of claims 1 to 5, comprising a host, a processor and a memory, wherein the processor and the memory are installed inside the host, the memory is used for storing the buck-boost time, the buck-boost time consumption deviation, the buck-boost speed and personal information of a user, the processor is used for acquiring and calculating the buck-boost time and the buck-boost time consumption difference, the respiratory support device further comprises a pressure sensor and a timer, the pressure sensor is used for detecting a pressure value in an air passage of the host, the timer is used for recording the buck-boost time, and the timer, the pressure sensor and the memory are electrically connected with the processor.
9. A respiratory support apparatus according to claim 8, wherein the personal information of the user comprises personal social information and respiratory mechanics parameters, in particular, respiratory mechanics parameters being resistance to breathing R and compliance to breathing C.
CN202011030638.1A 2020-09-27 2020-09-27 Method for adaptively adjusting voltage increasing and decreasing speed, application of method and respiration support equipment Pending CN112169103A (en)

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Application publication date: 20210105