CN103908713B - A kind of detection method of Anesthesia machine or respirator system compliance - Google Patents
A kind of detection method of Anesthesia machine or respirator system compliance Download PDFInfo
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- CN103908713B CN103908713B CN201210592639.4A CN201210592639A CN103908713B CN 103908713 B CN103908713 B CN 103908713B CN 201210592639 A CN201210592639 A CN 201210592639A CN 103908713 B CN103908713 B CN 103908713B
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Abstract
The invention discloses a kind of Anesthesia machine or the detection method of respirator system compliance, including step：Step S00, into compliance detection pattern, and the default number of times M that need to be detected；Step S10, the number of times m for determining current detection；Step S20, inflate to preset flow rate air flue, and detect the pressure value in air flue；Step S30, judge that whether intra-airway pressure value, up to the condition for terminating the breathing process, performs step S40；Step S40, into the stage of holding one's breath, continue the second Preset Time, and calculate air-breathing tidal volume, obtain plateau pressure value and end-expiratory positive pressure value；Step S50, beginning exhalation process, and continue the 3rd Preset Time, computing system compliance；Step S60, judge whether detection number of times m reaches preset times M, if it is, performing step S70；Otherwise, step S10 is performed；S70, the system compliance for calculating all respiratory cycles.The inventive method conveniently, accurately can measure system compliance in itself.
Description
Technical field
The present invention relates to Anesthesia machine or lung ventilator field, more particularly to a kind of Anesthesia machine or respirator system are complied with
The detection method of property.
Background technology
The measure of lung expansion is referred to as compliance, and the resilient characteristic of lung ventilator can also be represented with it.Compliance is single
The change value of position pressure inner capacities, its computing formula is：C=Δ Vml/ Δ PcmH2O, the unit of compliance is ml/cmH2O.It is suitable
Answering property can be divided into dynamic compliance and static compliance.Static compliance refers in end-tidal or air-breathing end shield gas so that lung or
Pressure in person's lung ventilator reaches balance, the change of the unit pressure inner capacities at this moment measuring.And dynamic compliance refers to air-breathing
Or in breathing process unit pressure inner capacities change, dynamic compliance receive air flue drag effects.
System compliance is an important monitoring index during anesthesia surgery, however, because system compliance is by more
The influence of kind of factor, accuracy of its measurement affects the control accuracy of Anesthesia machine parameter monitoring in itself and breathing pattern.But
Be existing compliance measuring method have can not very accurate measuring system compliance, some measuring methods are extremely complex.
It is even more so especially for static compliance.
Based on foregoing description, need badly and want a kind of simple, easy-operating static compliance detection method, accurately to measure
The static compliance of system.
The content of the invention
It is to solve problems described above, it is an object of the invention to provide a kind of Anesthesia machine or respirator system compliance
Detection method, anesthesia machine system static compliance in itself can be accurately measured using the method, be tidal volume monitoring
Compensation, and the compensation of control algolithm provides accurate foundation in Schema control.
In order to solve the above technical problems, the present invention uses following technical scheme：
The detection method of a kind of Anesthesia machine or respirator system compliance, comprises the following steps：
Step S00, Anesthesia machine or lung ventilator enter system compliance detection pattern, and the default number of times M that need to be detected, described
M is the positive integer not less than 1；
Step S10, control unit determine that the number of times m of current detection, wherein m are 1 to the positive integer between M；
Step S20, described control unit control inlet valve are opened with preset flow rate, and control outlet valve to close, to perform
Pressure value in breathing process, also, described control unit control detection means detection air flue；
Step S30, described control unit obtain pressure value and breathing process duration in the air flue, and by judging
Whether intra-airway pressure value described in unit judges reaches preset pressure threshold value or whether the breathing process duration reaches first
Default inspiratory duration, if any one in meeting two conditions, it is described that described control unit controls the Anesthesia machine to terminate
Breathing process, performs step S40；
Step S40, the described control unit control Anesthesia machine enter holds one's breath the stage, and continues the second Preset Time, this
When, data processing unit calculates the air-breathing tidal volume in whole breathing process, and described control unit is obtained by the detection means
The plateau pressure value and end-expiratory positive pressure value in the stage are taken, and air-breathing tidal volume is obtained by the data processing unit
Value；
Step S50, described control unit control Anesthesia machine start exhalation process, and continue end after the 3rd Preset Time；
In the 3rd Preset Time, the data processing unit calculates the value of the system compliance of this detection process；
Step S60, the judging unit judge whether detection number of times m reaches preset times M, if having reached default time
Number M, then perform step S70；If it is not, then return performing step S10；
Step S70, according to the M system compliance of respiratory cycle, the data processing unit tries to achieve system compliance number
The average value of value, the average value is the system compliance of the Anesthesia machine.
Preferably, in step s 50, when the data processing unit is according to air-breathing tidal volume and stable stage of holding one's breath
Plateau pressure value and the difference ratio of end-expiratory positive pressure value, calculate the system compliance of each detection process.
Preferably, in step s 40, the calculating of air-breathing tidal volume is comprised the following steps：
Step S41, control unit obtain the inspiratory flow rate of whole expiratory phase in S30 the step of sensor is detected；
Step S42, data processing unit are integrated to above-mentioned inspiratory flow rate, obtain the air-breathing moisture of expiratory phase
Amount.
Preferably, in step S00, M is the positive integer not less than 3；
In step S70, the data processing unit asks the method for system compliance numerical value at least to comprise the following steps：
Step S71, the data processing unit removal one maximum and a minimum value,
Step S72, the data processing unit try to achieve the average value of remaining M-2 system compliance numerical value, described average
Value is the system compliance of the Anesthesia machine.
Preferably, preset flow rate described in step S20 is 15L/min, preset pressure threshold value is described in step S30
35cmH2O, the first default inspiratory duration is 5S.
Preferably, in step s 40, second Preset Time is 0.2S.
Preferably, in step s 50, the 3rd Preset Time is 1S.
Preferably, in step S00, the preset times M is 5.
Preferably, in step s 40, entirely hold one's breath the stage, described control unit controls the inlet valve and described exhales
Air valve is turned off.
Preferably, in step s 50, whole exhalation process, described control unit controls the inlet valve to close, control
The outlet valve is opened.
A kind of Anesthesia machine or lung ventilator, it applies the measuring method of system as described above compliance.
Beneficial effects of the present invention are, due to the system compliance that the present invention passes through the duplicate detection respiratory cycle, Ran Houzai
One maximum of removal, removes a minimum value, tries to achieve the average value of remaining several system compliances, and the average value is system
Compliance, so the system compliance value for drawing is more accurate.Due to after the stage of holding one's breath is entered, recording the platform pressure in the stage
Power, PEEP values and record air-breathing tidal volume size, then calculate the system compliance in the cycle, so measuring using formula
Journey is very convenient, it is easy to control.
Brief description of the drawings
Fig. 1 is the Anesthesia machine for providing of the invention or the flow chart of the measuring method of respirator system compliance；
The calculation flow chart of the air-breathing tidal volume that Fig. 2 is provided for the present invention；
The air-breathing tidal volume of each respiratory cycle that Fig. 3 is provided for the present invention and plateau pressure and the relation of PEEP pressure differentials
Schematic diagram.
Specific embodiment
Technical scheme is further illustrated below by specific embodiment.
The system compliance of the present embodiment measurement is static compliance.The present embodiment is by the calculating side of the static compliance of lung
Method is applied to the calculating of anesthesia machine system compliance, regards anesthesia machine system as a complete lung, will connect patient lungs'
Air-breathing exhalation vents are blocked, the process of simulation lung breathing.Employ using the air-breathing tidal volume and air-breathing end shield in breathing process
Plateau pressure during gas stage stabilization calculates anesthesia machine system compliance with the difference ratio of PEEP pressure.PEEP(Positive
The abbreviation of expiration end pressure) value is end-expiratory positive pressure, refers in control breathing or during assisted respiartion, in exhaling
Latter stage is inhaled in the certain malleation of respiratory tract holding.
Fig. 1 is the Anesthesia machine for providing of the invention or the flow chart of the measuring method of respirator system compliance.Such as Fig. 1 institutes
Show that this kind of measuring method of system compliance is comprised the following steps：
Step S00, Anesthesia machine or lung ventilator enter system compliance detection pattern, and the default number of times M that need to be detected, described
M is the positive integer not less than 3.
In the present embodiment, preferably, preset times M is 5.Certainly, those skilled in the art can also be according to reality
Flexibly numbers are more organized in selection to demand.
Step S10, control unit determine to be currently needed for the number of times m of detection, and wherein m is 1 to the positive integer between M.First
During secondary detection, m values are 1；Each detection afterwards, m values are incremented by.
Step S20, described control unit control inlet valve are opened with preset flow rate, and control outlet valve to close, to perform
Pressure value in breathing process, also, described control unit control detection means detection air flue.
In the present embodiment, preferably, the preset flow rate is 15L/min.
Step S30, described control unit obtain pressure value and breathing process duration in the air flue, and by judging
Whether intra-airway pressure value described in unit judges reaches preset pressure threshold value or whether the breathing process duration reaches first
Default inspiratory duration, if any one in meeting two conditions, it is described that described control unit controls the Anesthesia machine to terminate
Breathing process, performs step S40.
Corresponding with the preferred preset flow rate in step S20 in the present embodiment, the preset pressure threshold value is preferably provided with
It is 35cmH2O, the first default inspiratory duration is preferably arranged to 5S.
Step S40, described control unit control the Anesthesia machine into holding one's breath the stage, entirely hold one's breath the stage, the control
Unit controls the inlet valve and the outlet valve to be turned off, and continues the second Preset Time, and now, data processing unit is calculated
Air-breathing tidal volume in whole breathing process, described control unit obtains the plateau pressure value in the stage by the detection means
With end-expiratory positive pressure value, and the value that air-breathing tidal volume is obtained by the data processing unit.
In the present embodiment, preferably, second Preset Time is 0.2S.Certainly, those skilled in the art also may be used
Flexibly to select other values according to the actual requirements.
Step S50, described control unit control Anesthesia machine start exhalation process, whole exhalation process, described control unit
Control the inlet valve to close, control the outlet valve to open, and continue end after the 3rd Preset Time；It is default the described 3rd
In time, the data processing unit calculates the value of the system compliance of this detection process.In the present embodiment, as excellent
Choosing, plateau pressure value and end-expiratory positive pressure value when the data processing unit is according to air-breathing tidal volume and stable stage of holding one's breath
Difference ratio, calculates the system compliance of each detection process.
Preferably, the 3rd Preset Time is 1S.Certainly, those skilled in the art can also spirit according to the actual requirements
It is living to select other values.
Step S60, the judging unit judge whether detection number of times m reaches preset times M, if having reached default time
Number M, then perform step S70；If it is not, then return performing step S10.
Step S70, according to the M system compliance of respiratory cycle, the data processing unit remove a maximum and
One minimum value, and the average value of remaining M-2 system compliance numerical value is tried to achieve, what the average value was the Anesthesia machine is
System compliance.
Skilled addressee readily understands that, in step S00, M values take the positive integer not less than 1, in step S70
In, the data processing unit directly tries to achieve the M average value of system compliance numerical value, is also feasible preferred scheme.But,
Those skilled in the art know, in the present embodiment in step S70, maximum, a minimum value are removed first and is asked for again
The processing method of average value, the elimination accidental error that it can be to a greater extent so that measurement result is more accurate.
The calculation flow chart of the air-breathing tidal volume that Fig. 2 is provided for the present invention.As shown in Fig. 2 in step s 40, air-breathing tide
The calculating of tolerance is comprised the following steps：
Step S41, control unit obtain the inspiratory flow rate of whole expiratory phase in S30 the step of sensor is detected.
Step S42, data processing unit are integrated to above-mentioned inspiratory flow rate, obtain the air-breathing moisture of expiratory phase
Amount.
The air-breathing tidal volume of each respiratory cycle that Fig. 3 is provided for the present invention and plateau pressure and the relation of PEEP pressure differentials
Schematic diagram.Specifically, the computing formula of system compliance is as follows in the present embodiment：
Csys=air-breathings tidal volume (ml)/[Pplat-PEEP] (cmH2O)
Wherein：
Csys：System compliance；
Pplat：Hold one's breath the plateau pressure in stage.
That is, plateau pressure value and end-tidal when system compliance is equal to air-breathing tidal volume and stable stage of holding one's breath
The ratio of the difference of malleation value.
In the present embodiment, the pre-set velocity value, preset pressure threshold value, the first Preset Time, the second Preset Time with
And the 3rd Preset Time be not limited only to above-mentioned data, it is also an option that other data combine.
The detection method of the system compliance described in the present embodiment, can measure anesthesia machine system in itself with accurate
Compliance, be tidal volume monitoring compensation, and in Schema control control algolithm compensation provide accurate foundation.
System compliance detection method described by the present embodiment cannot only be applied in Anesthesia machine, be also applied to
In lung ventilator.
Know-why of the invention is described above in association with specific embodiment.These descriptions are intended merely to explain of the invention
Principle, and can not by any way be construed to limiting the scope of the invention.Based on explanation herein, the technology of this area
Personnel associate other specific embodiments of the invention by would not require any inventive effort, these modes fall within
Within protection scope of the present invention.
Claims (10)
1. the detection method of a kind of Anesthesia machine or respirator system compliance, it is characterised in that comprise the following steps：
Step S00, Anesthesia machine or lung ventilator enter system compliance detection pattern, and the default number of times M that need to be detected, wherein M are
Positive integer not less than 1；
Step S10, control unit determine that the number of times m of current detection, wherein m are 1 to the positive integer between M；
Step S20, described control unit control inlet valve are opened with preset flow rate, and control outlet valve to close, to perform air-breathing
Pressure value in process, also, described control unit control detection means detection air flue；
Step S30, described control unit obtain pressure value and breathing process duration in the air flue, and by judging unit
Judge whether the intra-airway pressure value reaches preset pressure threshold value or whether the breathing process duration reaches first and preset
Time, if any one in meeting two conditions, described control unit controls the Anesthesia machine or lung ventilator to terminate described
Breathing process, performs step S40；
Step S40, described control unit control the Anesthesia machine or lung ventilator to enter to hold one's breath the stage, and continue second it is default when
Between, now, data processing unit calculates the air-breathing tidal volume in whole breathing process, and described control unit is by the detection dress
The plateau pressure value and end-expiratory positive pressure value for obtaining the stage are put, and air-breathing tidal volume is obtained by the data processing unit
Value；
Step S50, described control unit control Anesthesia machine or lung ventilator start exhalation process, and continue knot after the 3rd Preset Time
Beam；In the 3rd Preset Time, the data processing unit calculates the value of the system compliance of this detection process；
Step S60, the judging unit judge whether detection number of times m reaches preset times M, if having reached preset times M,
Then perform step S70；If it is not, then return performing step S10；
Step S70, according to the M system compliance of respiratory cycle, the data processing unit asks the average of system compliance value
Value, the average value is the system compliance of the Anesthesia machine or lung ventilator.
2. method according to claim 1, it is characterised in that in step s 50, the data processing unit is according to air-breathing
Plateau pressure value and the difference ratio of end-expiratory positive pressure value when tidal volume and stable stage of holding one's breath, calculate each detection process
System compliance.
3. method according to claim 1, it is characterised in that in step s 40, the calculating of air-breathing tidal volume at least includes
Following steps：
Step S41, control unit obtain the inspiratory flow rate of whole expiratory phase in S30 the step of sensor is detected；
Step S42, data processing unit are integrated to above-mentioned inspiratory flow rate, obtain the air-breathing tidal volume of expiratory phase.
4. method according to claim 1, it is characterised in that
In step S00, M is the positive integer not less than 3；
In step S70, the data processing unit asks the method for system compliance numerical value at least to comprise the following steps：
Step S71, the data processing unit removal one maximum and a minimum value,
Step S72, the data processing unit try to achieve the average value of remaining M-2 system compliance numerical value, and the average value is
It is the Anesthesia machine or the system compliance of lung ventilator.
5. method according to claim 1, it is characterised in that preset flow rate described in step S20 is 15L/min, step
In S30, the preset pressure threshold value is 35cmH2O, and the first Preset Time is 5S.
6. method according to claim 1, it is characterised in that in step s 40, second Preset Time is 0.2S.
7. method according to claim 1, it is characterised in that in step S00, the preset times M is 5；In step
In S50, the 3rd Preset Time is 1S.
8. method according to claim 1, it is characterised in that in step s 40, entirely hold one's breath the stage, the control list
Unit controls the inlet valve and the outlet valve to be turned off.
9. method according to claim 1, it is characterised in that in step s 50, whole exhalation process, the control list
Unit's control inlet valve is closed, and controls the outlet valve to open.
10. a kind of Anesthesia machine or lung ventilator, it is characterised in that：It applies the system compliance described in any one of claim 1 to 9
Detection method.
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| DE102015203455A1 (en) * | 2015-02-26 | 2016-09-01 | Hamilton Medical Ag | breathing device |
| CN106073717B (en) * | 2016-07-12 | 2020-09-08 | 湖南明康中锦医疗科技发展有限公司 | Obstructive apnea judgment method of noninvasive ventilator |
| CN111110967B (en) * | 2019-12-02 | 2022-05-17 | 湖南明康中锦医疗科技发展有限公司 | Respiratory support equipment CPAP performance evaluation method and respiratory support equipment |
| CN111249588A (en) * | 2020-01-20 | 2020-06-09 | 深圳市科曼医疗设备有限公司 | Expiratory pressure control method, device and equipment based on breathing machine and storage medium |
| CN112915330B (en) * | 2021-02-24 | 2023-02-14 | 浙江工业大学 | Mechanical ventilation platform pressure measurement compliance evaluation method |
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| US6142150A (en) * | 1998-03-24 | 2000-11-07 | Nellcor Puritan-Bennett | Compliance compensation in volume control ventilator |
| US6390091B1 (en) * | 1999-02-03 | 2002-05-21 | University Of Florida | Method and apparatus for controlling a medical ventilator |
| US7886739B2 (en) * | 2005-10-11 | 2011-02-15 | Carefusion 207, Inc. | System and method for circuit compliance compensated volume control in a patient respiratory ventilator |
| CN101467880B (en) * | 2007-12-28 | 2012-06-27 | 北京谊安医疗系统股份有限公司 | Method for improving tidal volume control and detection accuracy by introducing R value for calculation |
| CN101310678B (en) * | 2008-05-07 | 2010-06-02 | 上海力申科学仪器有限公司 | Measuring method of anesthesia apparatus tidal volume |
| CN102397609A (en) * | 2010-09-07 | 2012-04-04 | 北京航天长峰股份有限公司 | Ventilation method for ensuring volume and limiting pressure of anesthesia machine and breathing machine |
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