CN106730208A - The method and lung ventilator of self-adaptative adjustment air leakage - Google Patents
The method and lung ventilator of self-adaptative adjustment air leakage Download PDFInfo
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- CN106730208A CN106730208A CN201710036325.9A CN201710036325A CN106730208A CN 106730208 A CN106730208 A CN 106730208A CN 201710036325 A CN201710036325 A CN 201710036325A CN 106730208 A CN106730208 A CN 106730208A
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- lung ventilator
- respiratory cycle
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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
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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
- 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
- A61M2016/003—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter
-
- 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
Abstract
The present invention relates to the method and lung ventilator of a kind of self-adaptative adjustment air leakage, the method for the self-adaptative adjustment air leakage includes：The total flow Qt of gas of the collection lung ventilator within this respiratory cycle, calculates air leakage Q1 of the lung ventilator within this respiratory cycle, and stored based on the total flow Qt and using preset rules；The corresponding air leakage Q2 of the upper respiratory cycle that acquisition prestores, if the difference of air leakage Q1 and air leakage Q2 is more than the first predetermined threshold value, the air leakage for adjusting lung ventilator is air leakage Q1.The present invention enables to the lung ventilator adaptively can in time to carry out the adjustment of air leakage, adapts to the current breathing state of user, is preferably supplied gas to user.
Description
Technical field
The present invention relates to technical field of medical instruments, more particularly to a kind of self-adaptative adjustment air leakage method and breathing
Machine.
Background technology
The species of the mask of lung ventilator is various, the size disunity of leak holes, in addition, the breathing pattern method of each user
It is general different, furthermore, due to wearing or the factor influence, the data on flows and pressure data of the lung ventilator for finally giving such as position
It is very different.Most lung ventilators can carry out self adaptation on the market at present, such as the baseline drift technology of big health, and the technology is led to
A gas leakage baseline is calculated when crossing breathing every time, when breathe next time based on this baseline, flow exceedes should
Triggering judgement is just carried out when baseline.
Breathing can all update the gas leakage baseline of prior art every time, but breathe unstable (such as unexpected catchbreath in user
Or respiratory rate suddenly change) or significantly gas leakage occurs, and (such as user takes and wear again after mask or user's position changes
Cause after change mask with face fit be partially separated cause a large amount of gas leakage) when, gas leakage baseline can be caused to adapt in time, with
It is adjusted.
The content of the invention
It is an object of the invention to provide the method and lung ventilator of a kind of self-adaptative adjustment air leakage, it is intended to so that lung ventilator
The adjustment of air leakage adaptively can be in time carried out, the current breathing state of user is adapted to, is preferably supplied gas to user.
To achieve the above object, the present invention provides a kind of method of self-adaptative adjustment air leakage, the self-adaptative adjustment leakage
The method of tolerance includes：
S1, the total flow Qt of gas of the collection lung ventilator within this respiratory cycle, based on the total flow Qt and use
Preset rules calculate air leakage Q1 of the lung ventilator within this respiratory cycle, and are stored；
S2, the corresponding air leakage Q2 of the upper respiratory cycle that acquisition prestores, if air leakage Q1 is big with the difference of air leakage Q2
In the first predetermined threshold value, then the air leakage for adjusting lung ventilator is air leakage Q1.
Preferably, the step S1 includes：
S11, the total flow Qt of collection gas of the lung ventilator within this respiratory cycle, the is calculated based on the total flow Qt
One air leakage；
S12, when the total flow Qt is more than first air leakage, determines the air-breathing flex point of this respiratory cycle, and
Determine the corresponding inspiratory flow Qp of the air-breathing flex point；
S13, when the inspiratory flow Qp is more than the second predetermined threshold value with the difference of first air leakage, calculates this
Before respiratory cycle in the respiratory cycle of continuous predetermined number first air leakage and corresponding inspiratory flow Qp difference,
And calculate the summation M of the difference；
S14, if the summation M is more than the 3rd predetermined threshold value, reads the benchmark air leakage q of the mask that lung ventilator prestores,
Second in this respiratory cycle is calculated based on the total flow Qt, the summation M of the difference and the benchmark air leakage q
Air leakage, so that second air leakage is as the air leakage Q1 and stores.
Preferably, the step S1 is further included：
S15, if the summation M is less than or equal to the 3rd predetermined threshold value, or, the inspiratory flow Qp and first gas leakage
The difference of amount is less than or equal to the second predetermined threshold value, then so that first air leakage is as the air leakage Q1 and stores.
Preferably, the step S11 includes：
The total flow Qt of gas of the collection lung ventilator within this respiratory cycle, obtains gas leakage bent based on the total flow Qt
Line Q (t), the first air leakage is calculated based on the gas leakage curve：
Q (t)=∫ Q (t) dt.
Preferably, it is described to be calculated based on the total flow Qt, the summation M of the difference and the benchmark air leakage q
The second air leakage in this respiratory cycle includes：
To achieve the above object, the present invention also provides a kind of lung ventilator, and the lung ventilator includes：
Computing module, the total flow Qt for gathering gas of the lung ventilator within this respiratory cycle, based on total stream
The amount Qt and air leakage Q1 using preset rules calculating lung ventilator within this respiratory cycle, and stored；
Adjusting module, for obtaining the corresponding air leakage Q2 of the upper respiratory cycle for prestoring, if air leakage Q1 and air leakage
The difference of Q2 is more than the first predetermined threshold value, then the air leakage for adjusting lung ventilator is air leakage Q1.
Preferably, the computing module includes：
First computing unit, the total flow Qt for gathering gas of the lung ventilator within this respiratory cycle, based on described
Total flow Qt calculates the first air leakage；
Determining unit, for when the total flow Qt is more than first air leakage, determining the suction of this respiratory cycle
Gas flex point, and determine the corresponding inspiratory flow Qp of the air-breathing flex point；
Second computing unit, for presetting threshold more than second with the difference of first air leakage in the inspiratory flow Qp
During value, first air leakage and corresponding air-breathing in the respiratory cycle of continuous predetermined number before calculating this respiratory cycle
The difference of flow Qp, and calculate the summation M of the difference；
3rd computing unit, if being more than the 3rd predetermined threshold value for the summation M, reads the mask that lung ventilator prestores
Benchmark air leakage q, this breathing is calculated based on the total flow Qt, the summation M of the difference and the benchmark air leakage q
The second air leakage in cycle, so that second air leakage is as the air leakage Q1 and stores.
Preferably, the computing module is further included：
Processing unit, if the 3rd predetermined threshold value is less than or equal to for the summation M, or, the inspiratory flow Qp and institute
The difference of the first air leakage is stated less than or equal to the second predetermined threshold value, then so that first air leakage is as the air leakage Q1 and deposits
Storage.
Preferably, total stream of gas of first computing unit specifically for collection lung ventilator within this respiratory cycle
Amount Qt, gas leakage curve Q (t) is obtained based on the total flow Qt, and the first air leakage is calculated based on the gas leakage curve：
Q (t)=∫ Q (t) dt.
Preferably, the 3rd computing unit is specifically for based on the total flow Qt, the summation M of the difference and described
The second air leakage that benchmark air leakage q was calculated in this respiratory cycle includes：
The beneficial effects of the invention are as follows：User is during using lung ventilator, if the breathing of user is steady, gas leakage
Amount is basically unchanged, if there is unexpected situation during using so that air leakage becomes suddenly big or diminishes, lung ventilator can be with
It is adjusted casually, in general, the adjustment of air leakage can be completed within 2-3 respiratory cycle so that lung ventilator
The adjustment of air leakage adaptively can be in time carried out, the current breathing state of user is adapted to, is preferably supplied gas to user,
Preferably usage comfort is provided the user with, and reaches optimum curative effect.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the embodiment of method one of self-adaptative adjustment air leakage of the present invention；
Fig. 2 is the refinement schematic flow sheet of step S1 shown in Fig. 1；
Fig. 3 is the total flow Qt time history plots of lung ventilator collection；
Fig. 4 is the structural representation of the embodiment of lung ventilator of the present invention；
Fig. 5 is the structural representation of computing module shown in Fig. 4.
Specific embodiment
Principle of the invention and feature are described below in conjunction with accompanying drawing, example is served only for explaining the present invention, and
It is non-for limiting the scope of the present invention.
As shown in figure 1, Fig. 1 is the schematic flow sheet of the embodiment of method one of self-adaptative adjustment air leakage of the present invention, should be certainly
The method for adapting to adjustment air leakage is comprised the following steps：
Step S1, the total flow Qt of gas of the collection lung ventilator within this respiratory cycle, based on the total flow Qt simultaneously
Air leakage Q1 of the lung ventilator within this respiratory cycle is calculated using preset rules and store；
In the present embodiment, lung ventilator has a flow sensor on the position of gas outlet, to gather data on flows, sampling
Frequency is 200HZ.The data on flows directly gathered by sensor generally mixes many noises, it is therefore desirable to a low pass filtered
Ripple device is considered except noise.Consider except the typically smooth curve for after noise, obtaining by data on flows, can so avoid by
The error come in grass triggers the error on judging.
Calculate air leakage Q1 of the lung ventilator within this respiratory cycle based on the total flow Qt and using preset rules
A kind of mode can be：Obtain user expiratory phase air leakage and user expiration phase air leakage, expiratory phase
The air leakage sum of air leakage and expiration phase is air leakage Q1 of the lung ventilator within this respiratory cycle；Or according to total stream
The change curve for measuring Qt obtains the change curve of the air leakage Q1 in this respiratory cycle, and the change curve to air leakage Q1 is carried out
Integration can obtain the air leakage Q1 of lung ventilator within this respiratory cycle, etc..
Wherein, in expiratory phase, the intrapulmonary that a part of gas of total flow Qt enters access customer carries out gas exchanges, another portion
Point gas then air is leaked to by the hole on mask.In expiration phase, a part of gas of total flow Qt is exhaled for user
The gas for going out, another part is that the gas in air is leaked to by the hole on mask, because the gas of user's exhalation is also logical
The hole crossed on mask is leaked in air, therefore, in expiration phase, total flow Qt is and leaks to air by the hole on mask
In gas.
Step S2, the corresponding air leakage Q2 of the upper respiratory cycle that acquisition prestores, if the difference of air leakage Q1 and air leakage Q2
Value is more than the first predetermined threshold value, then the air leakage for adjusting lung ventilator is air leakage Ql.
In the present embodiment, before use after lung ventilator start, lung ventilator reads the air leakage of its storage inside first
Data, to determine the basic air leakage of the pressure of currently used mask correspondence setting.In general, lung ventilator inside is in store
The basic air leakage of several masks, for example, for mask 1, its under the pressure of 4cmH2O, basic gas leakage when wearing correct
It is 20LPM to measure, and under the pressure of 8cmH2O, basic air leakage when wearing correct is 50LPM.Generally the basic air leakage is represented
Be all minimum air leakage because user there may be in use wear inaccurate, mask have breakage or pressure
Situations such as mask is by jack-up during rising, causes the increased situation of air leakage.
When corresponding air leakage Q2 of the upper respiratory cycle for prestoring for the first time was obtained, can be with above-mentioned basic air leakage
As air leakage Q2.Then by the gas leakage in corresponding air leakage Q2 of the upper respiratory cycle and this respiratory cycle being calculated
Amount Q1 is compared, if the difference of air leakage Q1 and air leakage Q2 is more than the first predetermined threshold value, such as difference is more than 2LPM, then
The air leakage of lung ventilator is adjusted to air leakage Ql, if the difference of air leakage Q1 and air leakage Q2 is not more than the first default threshold
Value, then can maintain current air leakage constant, i.e., air leakage Q2 still can be used as the air leakage of lung ventilator.
By above description as can be seen that user is during using lung ventilator, if the breathing of user is steady,
Air leakage is basically unchanged, if there is unexpected situation during using so that air leakage becomes suddenly big or diminishes, lung ventilator
Can be adjusted to followability, in general, the adjustment of air leakage can be completed within 2-3 respiratory cycle so that exhale
Suction machine adaptively can in time carry out the adjustment of air leakage, adapt to the current breathing state of user, preferably be carried out to user
Supply gas, provide the user with preferably usage comfort, and reach optimum curative effect.
In a preferred embodiment, as shown in Fig. 2 on the basis of the embodiment of above-mentioned Fig. 1, the step S1 bags
Include：
S11, the total flow Qt of collection gas of the lung ventilator within this respiratory cycle, the is calculated based on the total flow Qt
One air leakage；
S12, when the total flow Qt is more than first air leakage, determines the air-breathing flex point of this respiratory cycle, and
Determine the corresponding inspiratory flow Qp of the air-breathing flex point；
S13, when the inspiratory flow Qp is more than the second predetermined threshold value with the difference of first air leakage, calculates this
Before respiratory cycle in the respiratory cycle of continuous predetermined number first air leakage and corresponding inspiratory flow Qp difference,
And calculate the summation M of the difference；
S14, if the summation M is more than the 3rd predetermined threshold value, reads the benchmark air leakage q of the mask that lung ventilator prestores,
Second in this respiratory cycle is calculated based on the total flow Qt, the summation M of the difference and the benchmark air leakage q
Air leakage, so that second air leakage is as the air leakage Q1 and stores；
S15, if the summation is less than or equal to the 3rd predetermined threshold value or the inspiratory flow Qp and first air leakage
Difference be less than or equal to the second predetermined threshold value, then so that first air leakage is as the air leakage Q1 and stores.
In the present embodiment, after the total flow Qt for collecting gas of the lung ventilator within this respiratory cycle, with total flow
The first air leakage is calculated on the basis of Qt, specifically, gas leakage curve Q (t) is obtained based on total flow Qt：
As shown in figure 3, Fig. 3 is the total flow Qt time history plots of lung ventilator collection.Wherein, vertical line shadow part
Fen Shi user lung sucks the volume Vinsp of gas, and horizontal line dash area is the volume Vexp of user's exhaled gas, generally comes
Say, the suction gas volume of user is consistent with the exhaled gas volume of user, that is, have Vinsp=Vexp.If in figure 3 will
The area of Vinsp is added in Vexp, then the dotted portion in Fig. 3 is the whole respiratory cycle with the area that axis of abscissas is surrounded
Interior total air leakage (i.e. the first air leakage), dotted line is gas leakage curve, and gas leakage curve is integrated can obtain the first leakage
Tolerance：
Q (t)=∫ Q (t) dt.
Preferably, integration duration t is 10S.But the duration t of other values can also, as long as integration duration in include one
The complete respiratory cycle.
When total flow Qt is more than the first air leakage (user is in expiratory phase), determine that the air-breathing of this respiratory cycle is turned
Point, such as pressure data to data on flows (i.e. total flow Qt curves) and lung ventilator are comprehensively analyzed to determine that this is breathed
The air-breathing flex point in cycle：
The second order of calculated flow rate data is led, if second order is led in being the scope at midpoint with 0, with same in first time period
Time in one cycle before first time period is second time period, with same period in time after first time period as the
Three time periods, the single order for calculating second time period and the 3rd time period data on flows is led, if continuously preset second in a cycle
Between the corresponding single order of section lead respectively less than the 3rd time period corresponding single order and lead, then obtain the single order of pressure data in the 3rd time period
Lead；If the single order of pressure data is led less than 0 in the 3rd time period, with the second order of data on flows lead for 0 when corresponding time point
The time point of flex point is triggered for lung ventilator, the time point is air-breathing flex point corresponding time point, so that it is determined that air-breathing flex point pair
The inspiratory flow Qp for answering.
In addition, the present embodiment can also determine the air-breathing flex point of this respiratory cycle separately through analysis data on flows,
The single order of such as calculated flow rate data is led, and leads to determine that the air-breathing of this respiratory cycle is turned by the single order for analyzing data on flows
Point, here is omitted.
When the difference of inspiratory flow Qp and the first air leakage is more than the second predetermined threshold value, for example, when difference is more than 3LPM,
The first air leakage for then needing adjustment above-mentioned, using the second air leakage after adjustment as the air leakage Q1 of lung ventilator.
Specifically, before calculating this respiratory cycle in the respiratory cycle of continuous predetermined number the first air leakage with it is corresponding
Inspiratory flow Qp difference, for example, calculate first air leakage of continuous 6 respiratory cycles before this respiratory cycle with it is right
The value of delta of the inspiratory flow Qp for answering, 6 δ values of respiratory cycle are added, and obtain the summation M of difference, if summation M is more than the 3rd
Predetermined threshold value, such as | M |>3LPM, then based on total flow Qt, the summation M of difference and benchmark air leakage q and according to following new public affairs
Formula calculates the second air leakage：
In a preferred embodiment, on the basis of the embodiment of above-mentioned Fig. 2, if in the respiratory cycle of predetermined number
First air leakage is less than or equal to the 3rd predetermined threshold value with the summation M of the difference of corresponding inspiratory flow Qp, then need not adjust
The first air leakage stated, directly using the first air leakage as the air leakage Q1 of lung ventilator, and is stored, subsequently to use.
In addition, if the difference of inspiratory flow Qp and the first air leakage is less than or equal to the second predetermined threshold value, also directly with the
One air leakage and is stored as the air leakage Q1 of lung ventilator, subsequently to use.
As shown in figure 4, Fig. 4 is the structural representation of the embodiment of lung ventilator of the present invention, the lung ventilator includes：
Computing module 101, the total flow Qt for gathering gas of the lung ventilator within this respiratory cycle, based on described total
The flow Qt and air leakage Q1 using preset rules calculating lung ventilator within this respiratory cycle, and stored；
In the present embodiment, lung ventilator has a flow sensor on the position of gas outlet, to gather data on flows, sampling
Frequency is 200HZ.The data on flows directly gathered by sensor generally mixes many noises, it is therefore desirable to a low pass filtered
Ripple device is considered except noise.Consider except the typically smooth curve for after noise, obtaining by data on flows, can so avoid by
The error come in grass triggers the error on judging.
Calculate air leakage Q1 of the lung ventilator within this respiratory cycle based on the total flow Qt and using preset rules
A kind of mode can be：Obtain user expiratory phase air leakage and user expiration phase air leakage, expiratory phase
The air leakage sum of air leakage and expiration phase is air leakage Q1 of the lung ventilator within this respiratory cycle；Or according to total stream
The change curve for measuring Qt obtains the change curve of the air leakage Q1 in this respiratory cycle, and the change curve to air leakage Q1 is carried out
Integration can obtain the air leakage Q1 of lung ventilator within this respiratory cycle, etc..
Wherein, in expiratory phase, the intrapulmonary that a part of gas of total flow Qt enters access customer carries out gas exchanges, another portion
Point gas then air is leaked to by the hole on mask.In expiration phase, a part of gas of total flow Qt is exhaled for user
The gas for going out, another part is that the gas in air is leaked to by the hole on mask, because the gas of user's exhalation is also logical
The hole crossed on mask is leaked in air, therefore, in expiration phase, total flow Qt is and leaks to air by the hole on mask
In gas.
Adjusting module 102, for obtaining the corresponding air leakage Q2 of the upper respiratory cycle for prestoring, if air leakage Q1 and gas leakage
The difference for measuring Q2 is more than the first predetermined threshold value, then the air leakage for adjusting lung ventilator is air leakage Q1.
In the present embodiment, before use after lung ventilator start, lung ventilator reads the air leakage of its storage inside first
Data, to determine the basic air leakage of the pressure of currently used mask correspondence setting.In general, lung ventilator inside is in store
The basic air leakage of several masks, for example, for mask 1, its under the pressure of 4cmH2O, basic gas leakage when wearing correct
It is 20LPM to measure, and under the pressure of 8cmH2O, basic air leakage when wearing correct is 50LPM.Generally the basic air leakage is represented
Be all minimum air leakage because user there may be in use wear inaccurate, mask have breakage or pressure
Situations such as mask is by jack-up during rising, causes the increased situation of air leakage.
When corresponding air leakage Q2 of the upper respiratory cycle for prestoring for the first time was obtained, can be with above-mentioned basic air leakage
As air leakage Q2.Then by the gas leakage in corresponding air leakage Q2 of the upper respiratory cycle and this respiratory cycle being calculated
Amount Q1 is compared, if the difference of air leakage Q1 and air leakage Q2 is more than the first predetermined threshold value, such as difference is more than 2LPM, then
The air leakage of lung ventilator is adjusted to air leakage Ql, if the difference of air leakage Q1 and air leakage Q2 is not more than the first default threshold
Value, then can maintain current air leakage constant, i.e., air leakage Q2 still can be used as the air leakage of lung ventilator.
By above description as can be seen that user is during using lung ventilator, if the breathing of user is steady,
Air leakage is basically unchanged, if there is unexpected situation during using so that air leakage becomes suddenly big or diminishes, lung ventilator
Can be adjusted to followability, in general, the adjustment of air leakage can be completed within 2-3 respiratory cycle so that exhale
Suction machine adaptively can in time carry out the adjustment of air leakage, adapt to the current breathing state of user, preferably be carried out to user
Supply gas, provide the user with preferably usage comfort, and reach optimum curative effect.
In a preferred embodiment, as shown in figure 5, on the basis of the embodiment of above-mentioned Fig. 4, computing module 101 is wrapped
Include：
First computing unit 1011, the total flow Qt for gathering gas of the lung ventilator within this respiratory cycle, is based on
The total flow Qt calculates the first air leakage；
Determining unit 1012, for when the total flow Qt is more than first air leakage, determining this respiratory cycle
Air-breathing flex point, and determine the corresponding inspiratory flow Qp of the air-breathing flex point；
Second computing unit 1013, for pre- more than second with the difference of first air leakage in the inspiratory flow Qp
If during threshold value, before calculating this respiratory cycle in the respiratory cycle of continuous predetermined number first air leakage with it is corresponding
The difference of inspiratory flow Qp, and calculate the summation M of the difference；
3rd computing unit 1014, if being more than the 3rd predetermined threshold value for the summation M, reads the face that lung ventilator prestores
The benchmark air leakage q of cover, this is calculated based on the total flow Qt, the summation M of the difference and the benchmark air leakage q
The second air leakage in respiratory cycle, so that second air leakage is as the air leakage Q1 and stores.
In the present embodiment, after the total flow Qt for collecting gas of the lung ventilator within this respiratory cycle, with total flow
The first air leakage is calculated on the basis of Qt, specifically, gas leakage curve Q (t) is obtained based on total flow Qt：
As shown in figure 3, Fig. 3 is the total flow Qt time history plots of lung ventilator collection.Wherein, vertical line shadow part
Fen Shi user lung sucks the volume Vinsp of gas, and horizontal line dash area is the volume Vexp of user's exhaled gas, generally comes
Say, the suction gas volume of user is consistent with the exhaled gas volume of user, that is, have Vinsp=Vexp.If in figure 3 will
The area of Vinsp is added in Vexp, then the dotted portion in Fig. 3 is the whole respiratory cycle with the area that axis of abscissas is surrounded
Interior total air leakage (i.e. the first air leakage), dotted line is gas leakage curve, and gas leakage curve is integrated can obtain the first leakage
Tolerance：
Q (t)=∫ Q (t) dt.
Preferably, integration duration t is 10S.But the duration t of other values can also, as long as integration duration in include one
The complete respiratory cycle.
When total flow Qt is more than the first air leakage (user is in expiratory phase), determine that the air-breathing of this respiratory cycle is turned
Point, such as pressure data to data on flows (i.e. total flow Qt curves) and lung ventilator are comprehensively analyzed to determine that this is breathed
The air-breathing flex point in cycle：
The second order of calculated flow rate data is led, if second order is led in being the scope at midpoint with 0, with same in first time period
Time in one cycle before first time period is second time period, with same period in time after first time period as the
Three time periods, the single order for calculating second time period and the 3rd time period data on flows is led, if continuously preset second in a cycle
Between the corresponding single order of section lead respectively less than the 3rd time period corresponding single order and lead, then obtain the single order of pressure data in the 3rd time period
Lead；If the single order of pressure data is led less than 0 in the 3rd time period, with the second order of data on flows lead for 0 when corresponding time point
The time point of flex point is triggered for lung ventilator, the time point is air-breathing flex point corresponding time point, so that it is determined that air-breathing flex point pair
The inspiratory flow Qp for answering.
In addition, the present embodiment can also determine the air-breathing flex point of this respiratory cycle separately through analysis data on flows,
The single order of such as calculated flow rate data is led, and leads to determine that the air-breathing of this respiratory cycle is turned by the single order for analyzing data on flows
Point, here is omitted.
When the difference of inspiratory flow Qp and the first air leakage is more than the second predetermined threshold value, for example, when difference is more than 3LPM,
The first air leakage for then needing adjustment above-mentioned, using the second air leakage after adjustment as the air leakage Q1 of lung ventilator.
Specifically, before calculating this respiratory cycle in the respiratory cycle of continuous predetermined number the first air leakage with it is corresponding
Inspiratory flow Qp difference, for example, calculate first air leakage of continuous 6 respiratory cycles before this respiratory cycle with it is right
The value of delta of the inspiratory flow Qp for answering, 6 δ values of respiratory cycle are added, and obtain the summation M of difference, if summation M is more than the 3rd
Predetermined threshold value, such as | M |>3LPM, then based on total flow Qt, the summation M of difference and benchmark air leakage q and according to following new public affairs
Formula calculates the second air leakage：
In a preferred embodiment, on the basis of the embodiment of above-mentioned Fig. 5, computing module 101 is further included：Place
Reason unit, if for the summation M of the first air leakage in the respiratory cycle of predetermined number and the difference of corresponding inspiratory flow Qp
Less than or equal to the 3rd predetermined threshold value, then the first above-mentioned air leakage need not be adjusted, directly using the first air leakage as lung ventilator
Air leakage Q1, and stored, subsequently to use.
In addition, if the difference of inspiratory flow Qp and the first air leakage is less than or equal to the second predetermined threshold value, also directly with the
One air leakage and is stored as the air leakage Q1 of lung ventilator, subsequently to use.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all it is of the invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (10)
1. a kind of method of self-adaptative adjustment air leakage, it is characterised in that the method for the self-adaptative adjustment air leakage includes：
S1, the total flow Qt of gas of the collection lung ventilator within this respiratory cycle, based on the total flow Qt and using default
Rule calculates air leakage Q1 of the lung ventilator within this respiratory cycle, and is stored；
S2, the corresponding air leakage Q2 of the upper respiratory cycle that prestores of acquisition, if the difference of air leakage Q1 and air leakage Q2 is more than the
One predetermined threshold value, the then air leakage for adjusting lung ventilator is air leakage Q1.
2. the method for self-adaptative adjustment air leakage according to claim 1, it is characterised in that the step S1 includes：
S11, the total flow Qt of gas of the collection lung ventilator within this respiratory cycle, calculate first and leak based on the total flow Qt
Tolerance；
S12, when the total flow Qt is more than first air leakage, determines the air-breathing flex point of this respiratory cycle, and determine
The corresponding inspiratory flow Qp of the air-breathing flex point；
S13, when the inspiratory flow Qp is more than the second predetermined threshold value with the difference of first air leakage, calculates this breathing
Before cycle in the respiratory cycle of continuous predetermined number first air leakage and corresponding inspiratory flow Qp difference, and count
Calculate the summation M of the difference；
S14, if the summation M is more than the 3rd predetermined threshold value, reads the benchmark air leakage q of the mask that lung ventilator prestores, and is based on
The total flow Qt, the summation M of the difference and the benchmark air leakage q calculate the second gas leakage in this respiratory cycle
Amount, so that second air leakage is as the air leakage Q1 and stores.
3. the method for self-adaptative adjustment air leakage according to claim 2, it is characterised in that the step S1 is further wrapped
Include：
S15, if the summation M is less than or equal to the 3rd predetermined threshold value, or, the inspiratory flow Qp and first air leakage
Difference is less than or equal to the second predetermined threshold value, then so that first air leakage is as the air leakage Q1 and stores.
4. the method for self-adaptative adjustment air leakage according to claim 2, it is characterised in that the step S11 includes：
The total flow Qt of gas of the collection lung ventilator within this respiratory cycle, gas leakage curve Q is obtained based on the total flow Qt
T (), the first air leakage is calculated based on the gas leakage curve：
Q (t)=∫ Q (t) dt.
5. the method for self-adaptative adjustment air leakage according to claim 2, it is characterised in that described based on the total flow
The second air leakage that Qt, the summation M of the difference and the benchmark air leakage q were calculated in this respiratory cycle includes：
6. a kind of lung ventilator, it is characterised in that the lung ventilator includes：
Computing module, the total flow Qt for gathering gas of the lung ventilator within this respiratory cycle, based on the total flow Qt
And air leakage Q1 of the lung ventilator within this respiratory cycle is calculated using preset rules, and stored；
Adjusting module, for obtaining the corresponding air leakage Q2 of the upper respiratory cycle for prestoring, if air leakage Q1 and air leakage Q2
Difference is more than the first predetermined threshold value, then the air leakage for adjusting lung ventilator is air leakage Q1.
7. lung ventilator according to claim 6, it is characterised in that the computing module includes：
First computing unit, the total flow Qt for gathering gas of the lung ventilator within this respiratory cycle, based on total stream
Amount Qt calculates the first air leakage；
Determining unit, for when the total flow Qt is more than first air leakage, determining that the air-breathing of this respiratory cycle is turned
Point, and determine the corresponding inspiratory flow Qp of the air-breathing flex point；
Second computing unit, for being more than the second predetermined threshold value with the difference of first air leakage in the inspiratory flow Qp
When, first air leakage and corresponding inspiratory flow in the respiratory cycle of continuous predetermined number before calculating this respiratory cycle
The difference of Qp is measured, and calculates the summation M of the difference；
3rd computing unit, if being more than the 3rd predetermined threshold value for the summation M, reads the benchmark of the mask that lung ventilator prestores
Air leakage q, this respiratory cycle is calculated based on the total flow Qt, the summation M of the difference and the benchmark air leakage q
The second interior air leakage, so that second air leakage is as the air leakage Q1 and stores.
8. lung ventilator according to claim 7, it is characterised in that the computing module is further included：
Processing unit, if the 3rd predetermined threshold value is less than or equal to for the summation M, or, the inspiratory flow Qp and described the
The difference of one air leakage is less than or equal to the second predetermined threshold value, then so that first air leakage is as the air leakage Q1 and stores.
9. lung ventilator according to claim 7, it is characterised in that first computing unit is specifically for collection lung ventilator
The total flow Qt of the gas within this respiratory cycle, obtains gas leakage curve Q (t), based on the leakage based on the total flow Qt
Gas curve calculates the first air leakage：
Q (t)=∫ Q (t) dt.
10. lung ventilator according to claim 7, it is characterised in that the 3rd computing unit is specifically for based on described
Total flow Qt, the summation M of the difference and the benchmark air leakage q calculate the second air leakage bag in this respiratory cycle
Include：
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| CN110496282A (en) * | 2019-06-17 | 2019-11-26 | 广州和普乐健康科技有限公司 | A kind of intelligent start/stop method, apparatus and ventilator |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101528295A (en) * | 2006-08-30 | 2009-09-09 | 雷斯梅德有限公司 | Determination of leak during CPAP treatment |
| CN102641536A (en) * | 2011-02-17 | 2012-08-22 | 新利虹科技股份有限公司 | Positive pressure breathing device and air leakage quantity obtaining method of positive pressure breathing device |
| CN103182120A (en) * | 2011-12-30 | 2013-07-03 | 北京谊安医疗系统股份有限公司 | Method and device for man-machine synchronization of invasive respirator in noninvasive ventilation mode |
| US20130228171A1 (en) * | 2012-03-05 | 2013-09-05 | Sonarmed, Inc. | Leak detection system and method for tube or catheter placement |
| CN104302338A (en) * | 2012-04-13 | 2015-01-21 | 瑞思迈有限公司 | Apparatus and methods for ventilatory treatment |
-
2017
- 2017-01-18 CN CN201710036325.9A patent/CN106730208B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101528295A (en) * | 2006-08-30 | 2009-09-09 | 雷斯梅德有限公司 | Determination of leak during CPAP treatment |
| CN102641536A (en) * | 2011-02-17 | 2012-08-22 | 新利虹科技股份有限公司 | Positive pressure breathing device and air leakage quantity obtaining method of positive pressure breathing device |
| CN103182120A (en) * | 2011-12-30 | 2013-07-03 | 北京谊安医疗系统股份有限公司 | Method and device for man-machine synchronization of invasive respirator in noninvasive ventilation mode |
| US20130228171A1 (en) * | 2012-03-05 | 2013-09-05 | Sonarmed, Inc. | Leak detection system and method for tube or catheter placement |
| CN104302338A (en) * | 2012-04-13 | 2015-01-21 | 瑞思迈有限公司 | Apparatus and methods for ventilatory treatment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110496282A (en) * | 2019-06-17 | 2019-11-26 | 广州和普乐健康科技有限公司 | A kind of intelligent start/stop method, apparatus and ventilator |
| CN110496282B (en) * | 2019-06-17 | 2023-09-15 | 广州和普乐健康科技有限公司 | Method and device for intelligently starting and stopping breathing machine and breathing machine |
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