CN109847160A - A kind of pulmonary respiration power assist control method and control device and ventilator using it - Google Patents
A kind of pulmonary respiration power assist control method and control device and ventilator using it Download PDFInfo
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- CN109847160A CN109847160A CN201910032784.9A CN201910032784A CN109847160A CN 109847160 A CN109847160 A CN 109847160A CN 201910032784 A CN201910032784 A CN 201910032784A CN 109847160 A CN109847160 A CN 109847160A
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Abstract
The invention discloses a kind of pulmonary respiration power assist control method and using its control device and ventilator, it is related to pulmonary respiration field, a kind of pulmonary respiration power assist control method, comprising: the first displacement that two processes of expiration and normal suction of measurement human body thorax when normal quiet breathes generate；The second displacement that two processes of expiration and normal suction when acquisition is equipped with ventilator in real time when thorax normal respiration generate；Calculate the deviation of first displacement and the second displacement；According to the deviation, the air demand that ventilator is inflated to lung is determined.The problem of difference that can solve patient condition makes ventilator flow control complicated and needs to carry out high requirement gas leakage detection.
Description
Technical field
The present invention relates to pulmonary respiration fields, fill more particularly to a kind of pulmonary respiration power assist control method and using its control
It sets and ventilator.
Background technique
Ventilator is a kind of normal physiologic respiration that can replace, control or change people, increases pulmonary ventilation volume, improves breathing
Function mitigates respiratory power consumption, saves the device of heart reservation ability, and ventilator is inflated to lung, air-breathing is converted to exhaling, discharge
Alveolar air and exhaling is converted to air-breathing, is circuited sequentially reciprocal.When infant's Complicated with Acute Respiratory Failure, by positive guarantor
It is invalid to keep treatment, obstructing airway or atelectasis occurs for hypopnea and abundant expectoration and thick, expectoration difficulties, be considered as trachea cannula and
Ventilator.
Currently, ventilator is divided into 2 classes by the type for using or applying: 1, controlling mechanical ventilation (CMV), controlling are mechanical
Ventilation defines: patient is in the case where autonomous respiration weakens or disappears, completely by mechanical ventilating machine generation, control and adjusting patient
Breathing；It disappears or weakens applied to autonomous respiration caused by disease；Autonomous respiration is irregular or frequency is too fast, mechanical ventilation without
Autonomous respiration is inhibited or is weakened with artificial method by method and patient's universal time coordinated.2, assisted mechanical ventilation (AMV), it is complementary
In the presence of mechanical ventilation (AMV) patient respiration, the autonomous respiration of patient is assisted by ventilator or enhanced.Mechanical ventilation
It is various mainly to be triggered by the intake negative-pressure of patient or inspiratory airflow；Although applied to autonomous respiration in the presence of and it is relatively regular, from
The patient of main hypopnea and hypoventilation.
Currently, ventilator divides 3 classes by the switching mode of suction, expiratory phase: 1, level pressure type: pressure reaches predicted value in respiratory tract
Afterwards, ventilator opens outlet valve, and thorax and lung passivity wither or generate expiration by negative pressure, when intra-airway pressure constantly declines,
Ventilator generates air-flow again by positive pressure, and causes air-breathing.Level pressure type ventilator is to be exhaled by pressure in respiratory tract to start
Suction machine, often invasive trachea cannula detects for the detection of pressure in respiratory tract.2, volum-controlled type: will estimated moisture by positive pressure
Amount is sent into intrapulmonary, after reaching estimated tidal volume, stops gas supply, into expiration state.3 timing types: according to the air-breathing being pre-designed
And expiratory duration gas supply.
Respirometric process and principle under people's tranquility are as follows: when air-breathing, external intercostal muscles is shunk, and is mentioned on rib cage, chest
Bone moves up and out, increases the anteroposterior diameter of thorax and left and right diameter all；Meanwhile contraction of diaphragm, the decline of diaphragm top make thorax
Diameter up and down increase.At this moment, thorax expands, and lung increases with expansion, the volume of lung, and intrapulmonary air pressure decline, outside air just leads to
It crosses respiratory tract and enters lung, complete aspiratory action；When expiration, external intercostal muscles diastole, rib cage declines due to gravity, breastbone to
Under, move inward, reduce the anteroposterior diameter of thorax and left and right diameter all: meanwhile, diaphram diastole, compartment top portion go up, make the upper of thorax
Lower diameter reduces.At this moment, thorax reduces, and lung and then bounces back, the smaller volume of lung, and intrapulmonary air pressure increases, and forces alveolar part
Gas is discharged in vitro by respiratory tract, completes expiration movement.Therefore, thorax laterally expansion and contraction, are intercostal muscle and diaphram
Shrink and diastole as a result, but either air-breathing is still exhaled, end in a flash, intrapulmonary air pressure is equal to ambient pressure.
Clinically Chang Kejian some breathe shallow patient and will appear hypoventilation and anoxia phenomenon.In the disease that rescue breathing stops suddenly
When people, the method manually breathed makes patient's thorax expand and reduce to keep pulmonary ventilation.But it is noted that both not overexert,
With antisitic defect rib cage, amplitude is paid attention to again, and alveolar ventilation is made to reach enough effects.
Application No. is 201510894628.5 displacement sensors for the acquisition of torso model data, can be applied to thoracic cavity
The real-time acquisition of profile provides a kind of displacement sensing for the acquisition of torso model electrical impedance tomography thoracic cavity outline data
Device is applied to the real-time acquisition of thoracic cavity profile, to obtain spatial positional information required for updating field domain model.So that people
Body thoracic cavity is able to drive the metal bar as electrode in displacement sensor as phase is made in the breathing of human body during breathing
The movement answered.In this round-trip movement, the interior electrode of displacement sensor and the positive area of external electrode change, capacitor
Corresponding change also occurs for value, is finally reflected in the transformation of spatial position.
And application No. is the inspections of 201520526583.1 micro-displacement sensor, micro-displacement change frequency and respiratory rate
Device is surveyed, without intervening human body, wherein the front of human body, micro-displacement sensor is arranged in the first metal plate of micro-displacement sensor
The second metal plate be set to the back of human body, when people carries out respiratory movement, the gas capacity generating period variation in thoracic cavity makes
The spacing for obtaining the first metal plate and the second metal sheet does cyclically-varying, that is, generates displacement, also provide on hardware for the present invention
Support.
Southeast China University's master thesis " research and application of ventilator Detection & Controling algorithm " in 2015, enhances leakage
The accuracy of gas detection, but gas leakage is often not easy to be overcome.
Summary of the invention
In view of this, the present invention provides a kind of pulmonary respiration power assist control method and control device and ventilator using it,
The air demand that ventilator is inflated to lung is determined with the physical change of the displacement of thorax, to breathe to solve the difference of patient condition
The problem of machine flow control is complicated and needs to carry out high requirement gas leakage detection.
In a first aspect, the present invention provides a kind of pulmonary respiration power assist control method, comprising:
Measure the first displacement that two processes of expiration and normal suction of human body thorax when normal quiet breathes generate；
Second of two processes of expiration and normal suction generation when acquisition is equipped with ventilator in real time when thorax normal respiration
Displacement；
Calculate the deviation of first displacement and the second displacement；
According to the deviation, the air demand that ventilator is inflated to lung is determined；
Wherein, the linear positive proportionate relationship of the deviation and the air demand；It is described normal, it is human body autonomous respiration
And it is not equipped with the situation of ventilator.
Preferably, the control method, further includes:
Measure the maximum displacement that human body thorax is generated in normal two processes of expiration and normal suction deeply breathed constantly；
According to the maximum displacement, the maximum value of the air demand is determined；
The maximum value of the air demand is the maximum air demand that the ventilator is inflated to lung.
Preferably, according to first displacement and the maximum displacement, displacement range is determined；
The displacement range is divided into several displacement sections, each displacement section is opposite with an air demand gear
It answers；
Judge the position in several displacement sections of the deviation；
According to the position, the air demand gear that the ventilator is inflated to lung is controlled.
Preferably, current air demand gear is recorded；
If the deviation counts a certain section in a certain section in several displacement sections
Number；
If the counting reaches preset quantity, determine that other are described several except the position and the removing position
It is displaced the counting in section；
The current air demand gear is adjusted to the corresponding air demand gear in the position, and removes the current gas supply
Gear is measured, air demand gear adjusted is recorded, repeats the above steps.
Preferably, if the deviation is in the interval division point in several displacement sections, in the interval division
The displacement section on point right side is counted.
Preferably, recording the current air demand gear corresponding K moment is displaced section；
The deviation corresponding K+1 moment for calculating the K+1 moment is displaced section；
Judge that the K+1 moment is displaced section and the K moment is displaced whether section is adjacent interval；
It is inflated if so, controlling the ventilator and being displaced the corresponding air demand gear in section according to the K+1 moment to lung；
If not, it is determined that the K+1 moment is displaced section and the K moment is displaced the intermediate of section and is displaced section,
The ventilator is controlled according to the intermediate corresponding air demand gear in section that is displaced to lung inflation.
Preferably, recording the K+1 moment is displaced section or described intermediate is displaced section；
The deviation corresponding K+2 moment for calculating the K+2 moment is displaced section；
Judge that the K+2 moment is displaced whether section with the K moment is displaced section or the K+1 moment displacement field
Between it is identical；
If so, controlling, the ventilator is displaced section according to the K moment or the K+1 moment is displaced section pair
The air demand gear answered is inflated to lung；
It is filled if it is not, then controlling the ventilator and being displaced the corresponding air demand gear in section according to the K+2 moment to lung
Gas.
Preferably, if the deviation is greater than alarm shift value, alarm count is carried out to the deviation；
If the deviation alarm count is greater than alarm shift value next time, the alarm count adds 1, otherwise removes institute
State alarm count；
When the alarm count, which reaches the preset alarm, to be counted, the ventilator alarm is controlled, while described in removing
Alarm count；
Wherein, the alarm shift value is the maximum displacement.
Second aspect, the present invention provide a kind of pulmonary respiration power assist controller, comprising:
Memory and processor and storage on a memory and the computer program that can run on a processor, the calculating
Machine program is a kind of such as above-mentioned pulmonary respiration power assist control method, and the processor performs the steps of when executing described program
Measure the first displacement that two processes of expiration and normal suction of human body thorax when normal quiet breathes generate；
The second displacement that two processes of expiration and normal suction when acquisition is equipped with ventilator in real time when normal respiration generate；
Calculate the deviation of first displacement and the second displacement；
According to the deviation, the air demand that ventilator is inflated to lung is determined；
Wherein, the linear positive proportionate relationship of the deviation and the air demand；It is described normal, it is human body autonomous respiration
And it is not equipped with the situation of ventilator.
The third aspect, the present invention provide a kind of ventilator, comprising:
Such as a kind of above-mentioned pulmonary respiration power assist control method, or a kind of such as above-mentioned pulmonary respiration power assist controller；
The control device is connect with displacement acquisition device and the ventilator respectively；
The displacement acquisition device, expiration and normal suction two when being equipped with ventilator for acquiring in real time when normal respiration
The second displacement that a process generates；
The control device calculates the deviation of first displacement and the second displacement；
According to the deviation, the air demand that ventilator is inflated to lung is determined；
Wherein, the linear positive proportionate relationship of the deviation and the air demand；It is described normal, it is human body autonomous respiration
And it is not equipped with the situation of ventilator.
The present invention provides a kind of pulmonary respiration power assist control method and control device and ventilator using it, with the position of thorax
The physical change of shifting determines the air demand that ventilator is inflated to lung, makes ventilator flow control to solve the difference of patient condition
It is complicated and the problem of need to carry out high requirement gas leakage detection.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects of the present invention, feature and advantage can
It is clearer and more comprehensible, the followings are specific embodiments of the present invention.
Detailed description of the invention
By the description below with reference to attached drawing to the embodiment of the present invention, the above and other purposes of the present invention, feature and
Advantage is apparent, in the accompanying drawings:
Fig. 1 is a kind of flow chart of pulmonary respiration power assist control method of the embodiment of the present invention；
Fig. 2 is a kind of flow chart of the air demand gear division methods of pulmonary respiration power assist control method of the embodiment of the present invention；
Fig. 3 is a kind of flow chart of the air demand gear method of adjustment of pulmonary respiration power assist control method of the embodiment of the present invention；
Fig. 4 is adjustment side when a kind of air demand gear of pulmonary respiration power assist control method of the embodiment of the present invention is mutated excessive
The flow chart of method；
Fig. 5 is that a kind of air demand gear of pulmonary respiration power assist control method of the embodiment of the present invention is mutated excessive subsequent time
The flow chart of method of adjustment；
Fig. 6 is a kind of flow chart of the alarm control method of pulmonary respiration power assist control method of the embodiment of the present invention；
Fig. 7 is a kind of pulmonary respiration power assist controller schematic diagram of the embodiment of the present invention.
Specific embodiment
Below based on embodiment, present invention is described, but it is worth noting that, the present invention is not limited to these realities
Apply example.It is detailed to describe some specific detail sections below in datail description of the invention.However, for not detailed
The present invention can also be understood completely in the part described to the greatest extent, those skilled in the art.
In addition, it should be understood by one skilled in the art that provided attached drawing simply to illustrate that the purpose of the present invention,
Feature and advantage, attached drawing are not to be actually drawn to scale.
Meanwhile unless the context clearly requires otherwise, "include", "comprise" etc. otherwise throughout the specification and claims
Similar word should be construed as the meaning for including rather than exclusive or exhaustive meaning；That is, being " including but not limited to "
Meaning.
Fig. 1 is a kind of flow chart of pulmonary respiration power assist control method of the embodiment of the present invention.As shown in Figure 1, a kind of lung is exhaled
Inhale power assist control method, comprising: step S101 measures expiration and normal suction two of the human body thorax when normal quiet breathes
The first displacement that process generates；Step S102 acquires expiration and normal suction of the thorax in normal respiration when being equipped with ventilator in real time
The second displacement that two processes of gas generate；Step S103 calculates the deviation of the first displacement and second displacement；Step S104 according to
Deviation determines the air demand that ventilator is inflated to lung；Wherein, the linear positive proportionate relationship of deviation and air demand；Normally,
For human body autonomous respiration and it is not equipped with the situation of ventilator.The present invention only with the physical change of the displacement of thorax determine ventilator to
The air demand of lung inflation makes ventilator flow control complicated and needs to carry out high requirement to solve the difference of patient condition
The problem of gas leakage detects, even if ventilator has gas leakage, patient subtracts due to sucking ventilator to the air demand that lung is inflated
Few, patient itself will actively increase second displacement, and the deviation of the first displacement and second displacement just will increase at this time, deviation
Increase, the air demand namely increase accordingly that ventilator is inflated to lung, completes ventilator within a respiratory cycle and filled to lung
The variable of the adjusting of the air demand of gas, foundation is single, and adjustment speed is very fast.Meanwhile human body thorax is measured in normal deeply breathe
When two processes of expiration and normal suction generate maximum displacement；According to maximum displacement, the maximum value of air demand is determined；Gas supply
The maximum value of amount is the maximum air demand that ventilator is inflated to lung.
In theory, judge whether the deviation such as the first displacement and the second displacement at moment one is 0；Such as first
When the deviation of the second displacement at shifting and moment one is 0, ventilator is inflated (namely according to the corresponding air demand of moment zero to lung
It says, the air demand that ventilator is inflated to lung at this time is constant)；If the deviation of the first displacement and the second displacement at moment one is not 0
When, the size of determination deviation value determines the incrementss for the air demand that ventilator is inflated to lung according to the size of deviation or subtracts
In a small amount.Wherein, the moment zero is the previous moment at moment one, it can be understood as the previous period of this respiratory cycle, this hair
It is several periods of a respiratory cycle or setting at the time of bright middle.
But since the process of second displacement is that there are the heartbeat perhaps motion artifacts in abdominal cavity or the fortune of patient itself
Dynamic interference or measurement Acquisition Error, therefore the deviation of the first displacement and second displacement substantially can not be 0, even if utilizing
Application No. is 201520526583.1 micro-displacement sensor, micro-displacement change frequency and respiratory frequency detection device, Huo Zheshen
Please number for 201510894628.5 displacement sensor for the acquisition of torso model data, the first displacement and second displacement it is inclined
Difference substantially can not be 0.Therefore, the method using displacement interval judgement, each displacement section pair are utilized to deviation
A gear is answered, the description in specific visible Fig. 2.
Fig. 2 is a kind of flow chart of the air demand gear division methods of pulmonary respiration power assist control method of the embodiment of the present invention.
As shown in Fig. 2, a kind of air demand gear division methods of pulmonary respiration power assist control method, comprising: step S201 is according to first
Shifting and maximum displacement determine displacement range；Step S202 is divided into several displacement sections, each displacement section for range is displaced
It is corresponding with an air demand gear；The position in several displacement sections of step S203 judgment bias value；Step S204 according to
Position, the air demand gear that control ventilator is inflated to lung.Specifically, the number in several displacement sections can be exhaled by existing
The flow of suction machine is controlled, and the gas source of ventilator has valve, by the aperture of control valve to the gear of air demand gear
It is adjusted.In step S201 according to the first displacement and maximum displacement, determine in displacement range；Given division condition, gives
Division condition be displaced section endpoint value, according to given division condition according to step S202 will be displaced range be divided into it is several
It is displaced section, each displacement section is corresponding with an air demand gear；When step S203 judgment bias value is in several displacements
When the position in section, i.e. deviation is at a several section being displaced in sections, at this time according to step S204 according to position, control
The air demand gear that ventilator processed is inflated to lung.
It is described in detail so that several displacement sections are 3 displacement sections as an example, 3 displacement sections, are high tap position respectively
Move section, middle-grade displacement section and low-grade displacement section.Top grade displacement section corresponds to air demand high tap position, and (such as: valve opening is
70% or more), middle-grade displacement section corresponds to air demand middle gear (such as: valve opening is 50%~70%), low grade displacement section
Corresponding air demand low-grade location (such as: valve opening is 40%~50%)；When deviation is in middle-grade displacement section, control breathing
The air demand gear that machine is inflated to lung is middle gear.However, in the actual process, it has been found that deviation falls position once in a while sometimes
When moving the endpoint value in section, at this time it is considered that (because thinking that patient is badly in need of at this time in the displacement section fallen on the right side of endpoint value
Gear that will be slightly high), it can specifically be detailed in the explanation of Fig. 3.
Fig. 3 is a kind of flow chart of the air demand gear method of adjustment of pulmonary respiration power assist control method of the embodiment of the present invention.
As shown in figure 3, step S301 records current air demand gear；If a certain area of the step S302 deviation in several displacement sections
In, then a certain section is counted；If step S303 counting when reaching preset quantity, determine position and remove position it
The counting in other outer several displacement sections；Current air demand gear is adjusted to the corresponding air demand gear in position by step S304,
Current air demand gear is removed, air demand gear adjusted is recorded, repeats the above steps；If step S305 deviation is several
When being displaced the interval division point in section, the displacement section on the right side of interval division point is counted.Reach specifically, counting
Preset quantity can be 3, and by taking several displacement sections are 3 displacement sections as an example, the deviation of first respiratory cycle is in middle-grade
It is displaced in section, then moving section progress to middle gear, count is incremented；As the deviation of second respiratory cycle is displaced section in top grade
Interior, then to top grade displacement section progress, count is incremented, and the deviation of third respiratory cycle and the 4th respiratory cycle are in middle gear
It moves in section, the count value in the section of middle-grade displacement at this time is 3, has reached preset quantity, has at this time adjusted current air demand gear
To the middle gear of air demand gear, while removing the counting in high-grade displacement section；And current air demand gear is removed, record adjustment
The middle gear of air demand afterwards, repeats the above steps.If deviation is in the interval division point in several displacement sections, in section
Displacement section (that is, the displacement section for being greater than division points) on the right side of division points is counted, as deviation is displaced section in middle-grade
When with the low-grade division points for being displaced section, bin count is moved to middle gear, bin count is not displaced to low grade；When some displacement
When bin count reaches preset quantity 3, the position of determination deviation value is in the displacement section for reaching preset quantity 3, and removes position
The counting in other several displacement sections except setting.
Patient is more steady in breathing, and air demand gear can fluctuate between a upper gear or next gear；In reality
In measurement process, it has been found that due to patient motion or due to breathing function fast decay, cause some deviation especially big,
And this influence cannot still be eliminated by above-mentioned air demand gear method of adjustment, therefore it is contemplated that arrived the mutation of tolerance gear
Method of adjustment when excessive is specifically detailed in the explanation of Fig. 4.
Fig. 4 is adjustment side when a kind of air demand gear of pulmonary respiration power assist control method of the embodiment of the present invention is mutated excessive
The flow chart of method.As shown in figure 4, step S401, which records the current air demand gear corresponding K moment, is displaced section；Step S402
The deviation corresponding K+1 moment for calculating the K+1 moment is displaced section；Step S403 judges that the K+1 moment is displaced section and K moment
It is displaced whether section is adjacent interval；Step S404 is if so, control ventilator is displaced the corresponding gas supply in section according to the K+1 moment
Gear is measured to inflate to lung；Step S405 if not, it is determined that the K+1 moment is displaced section and the K moment is displaced the interposition in section
Section is moved, control ventilator is inflated according to the corresponding air demand gear in centre displacement section to lung.Specifically, with several displacements
For 3 displacement sections is in section, (that is, K moment) air demand gear corresponding K moment is displaced section as low grade to record at present
It is displaced section；If the subsequent time K+1 moment at K moment is displaced section as high-grade displacement section, the K+1 moment is displaced section and is at this time
Top grade displacement section, and the K moment is displaced section as low-grade displacement section, the K+1 moment is displaced section and the K moment is displaced section not phase
Neighbour, the K+1 moment is displaced section at this time and the K moment is displaced the intermediate displacement section in section and is displaced section, control breathing for middle-grade
Machine is inflated according to the corresponding air demand middle gear in middle-grade displacement section to lung；If the subsequent time K+1 moment at K moment is displaced section
It is displaced section for middle-grade, it is that middle-grade is displaced section, and the K moment is displaced section as low-grade displacement field that the K+1 moment, which is displaced section, at this time
Between, the K+1 moment is displaced section and to be displaced section adjacent the K moment, controls ventilator at this time according to middle-grade displacement section (that is, when K+1
Carve displacement section) corresponding air demand middle gear inflates to lung, i.e., the gear for reducing air demand is first forced, and carry out subsequent place
Reason, is specifically detailed in the explanation of Fig. 5, wherein K=0,1,2 ....
Fig. 5 is that a kind of air demand gear of pulmonary respiration power assist control method of the embodiment of the present invention is mutated excessive subsequent time
The flow chart of method of adjustment.As shown in figure 5, the step S501 record K+1 moment is displaced section or intermediate displacement section；Step S502
The deviation corresponding K+2 moment for calculating the K+2 moment is displaced section；Step S503 judge the K+2 moment be displaced section whether with K
Moment displacement section or to be displaced section identical the K+1 moment；Step S504 is if so, control ventilator is displaced according to the K moment
Section or K+1 moment are displaced the corresponding air demand gear in section and inflate to lung；Step S505 is pressed if it is not, then controlling ventilator
The corresponding air demand gear in section is displaced according to the K+2 moment to inflate to lung.Specifically, with several displacement sections for 3 displacement fields
Between for, if the mutation of air demand gear is excessive, control ventilator is according to the centre corresponding air demand gear in displacement section to lung
Inflation, record is intermediate at this time is displaced section, and such as above-mentioned K+1 moment is displaced section as high-grade displacement section；Meanwhile in each expiration
In period, the deviation for calculating 2 exhalation cycles, the i.e. corresponding K of deviation that execution step S502 calculates the K+2 moment are required
+ 2 moment displacement section (can be 3 as counting reaches preset quantity, determine that the K+2 moment is displaced section and then at least needs 3 breathings
Period)；The current air demand gear corresponding K moment is recorded in the step S401 of Fig. 4 and is displaced section, before K moment displacement field
Between be that low-grade displacement section illustrates that emergency case occurs in patient, such as exhale if the K+2 moment, which be displaced section, is displaced section to be high-grade
Inhaling difficulty leads to breathing function fast decay, and is not that the mutation of air demand gear is generated because of patient motion, because at least
Have already been through 3 respiratory cycles；If the K+2 moment is displaced section as low-grade displacement section, illustrate to produce because of patient motion
Raw air demand gear mutation；If it is not low-grade displacement section that the K+2 moment, which is displaced section i.e., nor high-grade displacement section, then press
It is inflated according to the corresponding air demand gear in displacement section among the step S501 record K+1 moment to lung.Then, according to the method for Fig. 3,
The deviation corresponding K+3 moment for calculating the K+3 moment is displaced section, until there is the process that step S405 in Fig. 4 just enters Fig. 5
In.
That is, in the present invention, expiration of the thorax in normal respiration and normal when acquisition is equipped with ventilator in real time
The second displacement that two processes of air-breathing generate；First displacement be given value, in general according to first be displaced determine ventilator to
The air demand of lung inflation, such as: deviation is 0 or when within given error, then the air demand shelves that ventilator is inflated to lung
Invariant position.It is not adjacent interval when the second moment displacement section is displaced section with the first moment, it is determined that the second moment displacement field
Between with the intermediate of the first moment displacement section be displaced section, control ventilator is according to the corresponding air demand gear in centre displacement section
It inflates to lung, is then adjusted according to the method for adjustment that the air demand gear that Fig. 5 is embodiment is mutated excessive subsequent time.
Fig. 6 is a kind of flow chart of the alarm control method of pulmonary respiration power assist control method of the embodiment of the present invention.Such as Fig. 6 institute
Show, if step S601 deviation is greater than alarm shift value, alarm count is carried out to deviation；If step S602 deviation next time
When being worth alarm count greater than alarm shift value, alarm count adds 1, otherwise removes alarm count；Step S603 is reached when alarm count
When counting to preset alarm, ventilator alarm is controlled, while removing alarm count；Wherein, alarm shift value is maximum displacement.
Fig. 7 is a kind of pulmonary respiration power assist controller schematic diagram of the embodiment of the present invention.As shown in fig. 7, a kind of pulmonary respiration helps
Force control device, comprising: memory 701 and processor 702 and be stored on memory 701 and can be run on processor 702
Computer program, computer program be a kind of above-mentioned pulmonary respiration power assist control method, processor 702 execute program when realize with
Lower step: the first displacement that two processes of expiration and normal suction of measurement human body thorax when normal quiet breathes generate；It is real
When the acquisition second displacement that expiration and normal suction two process of the thorax in normal respiration generates when being equipped with ventilator；It calculates
The deviation of first displacement and second displacement；According to deviation, the air demand that ventilator is inflated to lung is determined；Wherein, deviation
With the linear positive proportionate relationship of air demand；Normal is human body autonomous respiration and the situation for being not equipped with ventilator.
Meanwhile a kind of ventilator proposed by the present invention, it can be applied to such as a kind of above-mentioned pulmonary respiration power assist control method,
It or may include such as a kind of above-mentioned pulmonary respiration power assist controller；The control device, respectively with displacement acquisition device and
Ventilator connection；Displacement acquisition device, expiration of the thorax in normal respiration and normal when being equipped with ventilator for acquiring in real time
The second displacement that two processes of air-breathing generate；Control device calculates the deviation of the first displacement and second displacement；According to deviation
Value, determines the air demand that ventilator is inflated to lung；Wherein, the linear positive proportionate relationship of deviation and air demand；It is normally people
Body autonomous respiration and the situation for being not equipped with ventilator.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, there is no the portion being described in detail in some embodiment
Point, reference can be made to the related descriptions of other embodiments.
It is understood that the correlated characteristic in the above method and device can be referred to mutually.In addition, in above-described embodiment
" first ", " second " etc. be and not represent the superiority and inferiority of each embodiment for distinguishing each embodiment.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
Algorithm and display are not inherently related to any particular computer, virtual system, or other device provided herein.
Various general-purpose systems can also be used together with teachings based herein.As described above, it constructs required by this kind of system
Structure be obvious.In addition, the present invention is also not directed to any particular programming language.It should be understood that can use various
Programming language realizes summary of the invention described herein, and the description done above to language-specific is to disclose this hair
Bright preferred forms.
In the instructions provided here, numerous specific details are set forth.It is to be appreciated, however, that implementation of the invention
Example can be practiced without these specific details.In some instances, well known method, structure is not been shown in detail
And technology, so as not to obscure the understanding of this specification.
Similarly, it should be understood that in order to simplify the disclosure and help to understand one or more of the various inventive aspects,
Above in the description of exemplary embodiment of the present invention, each feature of the invention is grouped together into single implementation sometimes
In example, figure or descriptions thereof.However, the disclosed method should not be interpreted as reflecting the following intention: i.e. required to protect
Shield the present invention claims features more more than feature expressly recited in each claim.More precisely, as following
Claims reflect as, inventive aspect is all features less than single embodiment disclosed above.Therefore,
Thus the claims for following specific embodiment are expressly incorporated in the specific embodiment, wherein each claim itself
All as a separate embodiment of the present invention.
Those skilled in the art will understand that can be carried out adaptively to the module in the equipment in embodiment
Change and they are arranged in one or more devices different from this embodiment.It can be the module or list in embodiment
Member or component are combined into a module or unit or component, and furthermore they can be divided into multiple submodule or subelement or
Sub-component.Other than such feature and/or at least some of process or unit exclude each other, it can use any
Combination is to all features disclosed in this specification (including adjoint claim, abstract and attached drawing) and so disclosed
All process or units of what method or apparatus are combined.Unless expressly stated otherwise, this specification is (including adjoint power
Benefit require, abstract and attached drawing) disclosed in each feature can carry out generation with an alternative feature that provides the same, equivalent, or similar purpose
It replaces.
In addition, it will be appreciated by those of skill in the art that although some embodiments described herein include other embodiments
In included certain features rather than other feature, but the combination of the feature of different embodiments mean it is of the invention
Within the scope of and form different embodiments.For example, in the following claims, embodiment claimed is appointed
Meaning one of can in any combination mode come using.
Various component embodiments of the invention can be implemented in hardware, or to run on one or more processors
Software module realize, or be implemented in a combination thereof.It will be understood by those of skill in the art that can be used in practice
Microprocessor or digital signal processor (DSP) are realized in pulmonary respiration power assist controller according to an embodiment of the present invention
The some or all functions of some or all components.The present invention is also implemented as executing method as described herein
Some or all device or device programs (for example, computer program and computer program product).Such reality
Existing program of the invention can store on a computer-readable medium, or may be in the form of one or more signals.
Such signal can be downloaded from an internet website to obtain, and perhaps be provided on the carrier signal or in any other forms
It provides.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and ability
Field technique personnel can be designed alternative embodiment without departing from the scope of the appended claims.In the claims,
Any reference symbol between parentheses should not be configured to limitations on claims.Word "comprising" does not exclude the presence of not
Element or step listed in the claims.Word "a" or "an" located in front of the element does not exclude the presence of multiple such
Element.The present invention can be by means of including the hardware of several different elements and being come by means of properly programmed computer real
It is existing.In the unit claims listing several devices, several in these devices can be through the same hardware branch
To embody.The use of word first, second, and third does not indicate any sequence.These words can be explained and be run after fame
Claim.
Claims (10)
1. a kind of pulmonary respiration power assist control method characterized by comprising
Measure the first displacement that two processes of expiration and normal suction of human body thorax when normal quiet breathes generate；
The second that expiration and normal suction two process of the thorax in normal respiration generates when acquisition is equipped with ventilator in real time
It moves；
Calculate the deviation of first displacement and the second displacement；
According to the deviation, the air demand that ventilator is inflated to lung is determined；
Wherein, the linear positive proportionate relationship of the deviation and the air demand；It is described normal, for human body autonomous respiration and not
It is equipped with the situation of ventilator.
2. control method according to claim 1, which is characterized in that further include:
Measure the maximum displacement that human body thorax is generated in normal two processes of expiration and normal suction deeply breathed constantly；
According to the maximum displacement, the maximum value of the air demand is determined；
The maximum value of the air demand is the maximum air demand that the ventilator is inflated to lung.
3. control method according to claim 2, it is characterised in that:
According to first displacement and the maximum displacement, displacement range is determined；
The displacement range is divided into several displacement sections, each displacement section is corresponding with an air demand gear；
Judge the position in several displacement sections of the deviation；
According to the position, the air demand gear that the ventilator is inflated to lung is controlled.
4. control method according to claim 3, it is characterised in that:
Record current air demand gear；
If the deviation counts a certain section in a certain section in several displacement sections；
If the counting reaches preset quantity, determines the position and remove other described several displacements except the position
The counting in section；
The current air demand gear is adjusted to the corresponding air demand gear in the position, and removes the current air demand shelves
Position, records air demand gear adjusted, repeats the above steps.
5. control method according to claim 4, it is characterised in that:
If the deviation is in the interval division point in several displacement sections, to the displacement on the right side of the interval division point
Section is counted.
6. control method according to claim 4, it is characterised in that:
Recording the current air demand gear corresponding K moment is displaced section；
The deviation corresponding K+1 moment for calculating the K+1 moment is displaced section；
Judge that the K+1 moment is displaced section and the K moment is displaced whether section is adjacent interval；
It is inflated if so, controlling the ventilator and being displaced the corresponding air demand gear in section according to the K+1 moment to lung；
If not, it is determined that the K+1 moment is displaced section and the K moment is displaced the intermediate of section and is displaced section, control
The ventilator is according to the intermediate corresponding air demand gear in section that is displaced to lung inflation.
7. control method according to claim 6, it is characterised in that:
Recording the K+1 moment is displaced section or described intermediate is displaced section；
The deviation corresponding K+2 moment for calculating the K+2 moment is displaced section；
Judge that the K+2 moment is displaced whether section is displaced section with the K moment or the K+1 moment is displaced section phase
Together；
If so, controlling, the ventilator according to the K moment is displaced section or to be displaced section corresponding the K+1 moment
Air demand gear is inflated to lung；
It is inflated if it is not, then controlling the ventilator and being displaced the corresponding air demand gear in section according to the K+2 moment to lung.
8. described in any item control methods according to claim 1~7, it is characterised in that:
If the deviation is greater than alarm shift value, alarm count is carried out to the deviation；
If the deviation alarm count is greater than alarm shift value next time, the alarm count adds 1, otherwise removes the report
It is alert to count；
When the alarm count, which reaches the preset alarm, to be counted, the ventilator alarm is controlled, while removing the alarm
It counts；
Wherein, the alarm shift value is the maximum displacement.
9. a kind of pulmonary respiration power assist controller characterized by comprising
Memory and processor and storage on a memory and the computer program that can run on a processor, the computer journey
Sequence is a kind of pulmonary respiration power assist control method as described in any one of claim 1~8, and the processor executes real when described program
Existing following steps:
Measure the first displacement that two processes of expiration and normal suction of human body thorax when normal quiet breathes generate；
The second that expiration and normal suction two process of the thorax in normal respiration generates when acquisition is equipped with ventilator in real time
It moves；
Calculate the deviation of first displacement and the second displacement；
According to the deviation, the air demand that ventilator is inflated to lung is determined；
Wherein, the linear positive proportionate relationship of the deviation and the air demand；It is described normal, for human body autonomous respiration and not
It is equipped with the situation of ventilator.
10. a kind of ventilator characterized by comprising
A kind of pulmonary respiration power assist control method as described in any one of claim 1~8, or a kind of lung is exhaled as claimed in claim 9
Inhale power assist controller；
The control device is connect with displacement acquisition device and the ventilator respectively；
The displacement acquisition device, expiration and normal suction of the thorax in normal respiration when being equipped with ventilator for acquiring in real time
The second displacement that two processes generate；
The control device calculates the deviation of first displacement and the second displacement；
According to the deviation, the air demand that ventilator is inflated to lung is determined；
Wherein, the linear positive proportionate relationship of the deviation and the air demand；It is described normal, for human body autonomous respiration and not
It is equipped with the situation of ventilator.
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| CN201910032784.9A CN109847160B (en) | 2019-01-14 | 2019-01-14 | Lung breathing assistance control device and breathing machine |
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| CN201910032784.9A CN109847160B (en) | 2019-01-14 | 2019-01-14 | Lung breathing assistance control device and breathing machine |
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