CN102266606A - End-expiratory detection method and device - Google Patents
End-expiratory detection method and device Download PDFInfo
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- CN102266606A CN102266606A CN2010106181303A CN201010618130A CN102266606A CN 102266606 A CN102266606 A CN 102266606A CN 2010106181303 A CN2010106181303 A CN 2010106181303A CN 201010618130 A CN201010618130 A CN 201010618130A CN 102266606 A CN102266606 A CN 102266606A
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- Prior art keywords
- airway pressure
- pressure value
- tidal
- predetermined number
- detection method
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/08—Detecting, measuring or recording devices for evaluating the respiratory organs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/021—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes operated by electrical means
- A61M16/022—Control means therefor
- A61M16/024—Control means therefor including calculation means, e.g. using a processor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
- A61M2016/0015—Accessories therefor, e.g. sensors, vibrators, negative pressure inhalation detectors
- A61M2016/0018—Accessories therefor, e.g. sensors, vibrators, negative pressure inhalation detectors electrical
- A61M2016/0021—Accessories therefor, e.g. sensors, vibrators, negative pressure inhalation detectors electrical with a proportional output signal, e.g. from a thermistor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
- A61M2016/0027—Accessories therefor, e.g. sensors, vibrators, negative pressure pressure meter
Abstract
The invention discloses an end-expiratory detection method and device. The end-expiratory detection method comprises the following steps: detecting airway pressures; saving the detected airway pressures; judging whether the number of identical data in the airway pressures is greater than a preset number; and when the number of identical data in the airway pressures is greater than a preset number, acquiring the end-expiratory positive pressure. The invention can be used for detecting the end-expiratory positive pressure in time.
Description
Technical field
The present invention relates to a kind of end-tidal detection method and device.
Background technology
Detecting patient's end expiratory positive pressure (being PEEP) value is a kind of function that all possesses of present one respirator and anesthesia.But the software algorithm different according to each manufacturing firm, certainty of measurement is distinguished to some extent, and accuracy of measurement is also different.From doctor's angle, hope can obtain current patient's end expiratory positive pressure rapidly and accurately.Improve the rapidity and the accuracy that detect and become pursuing one's goal of each manufacturing firm.
But in correlation technique, the end-tidal detection method that is provided is difficult in time end expiratory positive pressure be detected.
Be difficult to the problem that in time end expiratory positive pressure detected at the end-tidal detection method in the correlation technique, do not propose effective solution at present as yet.
Summary of the invention
Be difficult in time the problem that end expiratory positive pressure is detected at the end-tidal detection method in the correlation technique and propose the present invention, for this reason, main purpose of the present invention is to provide a kind of end-tidal detection method and device, to address the above problem.
To achieve these goals, according to an aspect of the present invention, provide a kind of end-tidal detection method.This end-tidal detection method comprises: detect the airway pressure value; Preserve a plurality of airway pressure values that detect; Whether the number of judging identical data in described a plurality of airway pressure value is greater than predetermined number; When the number of identical data is greater than described predetermined number in described a plurality of airway pressure values, obtain the end expiratory positive pressure value.
Further, detecting the airway pressure value comprises: every interval very first time is detected once described airway pressure value.
Further, detect the airway pressure value and comprise: transfer to when exhaling from air-breathing detecting the patient, start intervalometer; When detecting airway pressure and begin to rise, control described intervalometer and reset.
Further, preserving a plurality of airway pressure values that detect comprises: create array; Utilize described array to preserve a plurality of airway pressure values of described detection.
Further, described array is an one-dimension array, comprises 10 depositors.
Further, whether the number of judging identical data in described a plurality of airway pressure value comprises greater than predetermined number: second time of every interval judges that whether the number of identical data in described a plurality of airway pressure value is greater than predetermined number.
Further, described predetermined number is 4.
Further, when the number of identical data is greater than described predetermined number in described a plurality of airway pressure values, obtaining the end expiratory positive pressure value comprises: when the number of identical data is greater than described predetermined number in described a plurality of airway pressure values, with in described a plurality of airway pressure values greater than the data of described predetermined number as described end expiratory positive pressure value.
To achieve these goals, according to a further aspect in the invention, provide a kind of end-tidal checkout gear.This end-tidal checkout gear comprises: detection module is used to detect the airway pressure value; Preserve module, be used to preserve a plurality of airway pressure values of detection; Judge module is used for judging that whether the number of described a plurality of airway pressure value identical datas is greater than predetermined number; Acquisition module when being used for number at described a plurality of airway pressure value identical datas greater than described predetermined number, obtains the end expiratory positive pressure value.
Further, described preservation module comprises: creation module is used to create array; Preserve submodule, be used to utilize described array to preserve a plurality of airway pressure values of described detection.
Further, described detection module comprises: start module, be used for transferring to when exhaling from air-breathing detecting the patient, start intervalometer; Control module is used for controlling described intervalometer and resetting when detecting airway pressure and begin to rise.
By the present invention, adopt and detect the airway pressure value; Preserve a plurality of airway pressure values that detect; Whether the number of judging identical data in described a plurality of airway pressure value is greater than predetermined number; When the number of identical data is greater than described predetermined number in described a plurality of airway pressure values, obtain the method for end expiratory positive pressure value, solve the end-tidal detection method in the correlation technique and be difficult to the problem that in time end expiratory positive pressure detected, and then reached the effect that in time end expiratory positive pressure is detected.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart according to the end-tidal detection method of the embodiment of the invention;
Fig. 2 is the breathing cycle expiration phase sketch map according to the embodiment of the invention;
Fig. 3 is the flow chart according to the preferred embodiment of end-tidal detection method of the present invention; And
Fig. 4 is the sketch map according to the end-tidal checkout gear of the embodiment of the invention.
The specific embodiment
Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
Fig. 1 is the flow chart according to the end-tidal detection method of the embodiment of the invention;
As shown in Figure 1, this end-tidal detection method comprises:
Step S102 detects the airway pressure value.
Preferably, detecting the airway pressure value comprises: every interval very first time is detected once described airway pressure value.
For example, this very first time can be 20MS.
Preferably, detect the airway pressure value and comprise: transfer to when exhaling from air-breathing detecting the patient, start intervalometer; When detecting airway pressure and begin to rise, control described intervalometer and reset.
Step S104 preserves a plurality of airway pressure values that detect.
Preferably, preserving a plurality of airway pressure values that detect comprises: create array; Utilize described array to preserve a plurality of airway pressure values of described detection.
For example, described array is an one-dimension array, comprises 10 depositors.
Step S106, whether the number of judging identical data in described a plurality of airway pressure value is greater than predetermined number.
Preferably, whether the number of judging identical data in described a plurality of airway pressure value comprises greater than predetermined number: second time of every interval judges that whether the number of identical data in described a plurality of airway pressure value is greater than predetermined number.
For example, this second time can be 100MS.
Step S108 when the number of identical data is greater than described predetermined number in described a plurality of airway pressure values, obtains the end expiratory positive pressure value.
Preferably, described predetermined number is 4.
Preferably, when the number of identical data is greater than described predetermined number in described a plurality of airway pressure values, obtaining the end expiratory positive pressure value comprises: when the number of identical data is greater than described predetermined number in described a plurality of airway pressure values, with in described a plurality of airway pressure values greater than the data of described predetermined number as described end expiratory positive pressure value.
The computational methods of a kind of end expiratory positive pressure (being PEEP) are provided in the above-described embodiments.This method can be in a breathing cycle very first time judge end expiratory positive pressure (being PEEP) value under the present mode fast and accurately, and simplicity of design, amount of calculation is little.
Below the preferred embodiments of the present invention are described.
Figure 2 shows that breathing cycle expiration phase sketch map of the present invention.The present invention relates to the estimation algorithm of a kind of end expiratory positive pressure (being PEEP).
Wherein, as shown in Figure 1, in a breathing cycle, beginning to the whole process of air-breathing beginning next time from air-breathing end is expiration phase, and the measurement of end expiratory positive pressure drew in this stage.
Whole computational process is shown in Fig. 3 program flow diagram.
When the air-breathing end of respirator, the beginning of exhaling, enter expiration phase after, 20MS intervalometer and 100MS intervalometer start simultaneously.Every 20MS gathers the AD value of an airway pressure, and leaves in the array.In this stage, shown in flow chart, if do not reach 100MS, then program will continue circulation, and the response position in the array is filled up.If reach 100MS, then begin to check identical data number in the array.
With the flow chart is example,, supposes the variable new PEEP by name that we define here, and the identical value that recomputates in the array is B, and the PEEP value that last one-period obtains is B.
In program, check as process, the number of finding identical numerical value in the array is greater than 4, then new PEEP value is revised as B, that is to say,, obtained up-to-date PEEP value through a new breathing cycle, and the variable that defines to us of the PEEP value assignment that will newly obtain, pass to display interface for it and show.
After obtaining new PEEP value, the calculating of the PEEP value of this breathing cycle finishes.
As the process of the data in the array is calculated, find that the number of identical data is less than 4, then be judged to be respiratory system the gas leakage has taken place, the gas in the perhaps current air flue still in the process that continues discharge, does not reach stable status.
Here, program begins to judge whether arrived expiratory phase at present.As arriving expiratory phase, then can be judged to be system gas and leak, in order to guarantee safety, new PEEP value will no longer be calculated, use PEEP value A that one-period calculates again assignment pass to display interface for it and show to new PEEP value.
As not arriving expiratory phase, then be judged to be outlet valve and still opening, system is still in deflated process.Program is restarted the PEEP value in the next 100MS of cycle calculations.
Alternatively, end-tidal detection method of the present invention can comprise with the lower part:
At first, design an intervalometer, in any one breathing cycle, pressure in detecting present air flue begins to be begun to descend by peak, be the patient begin from air-breathing transfer expiration to after, start intervalometer immediately, every 20MS current airway pressure is detected once.Begin to rise when detecting current airway pressure, promptly the patient begins when air-breathing, and intervalometer resets.
Secondly, design an one-dimension array, comprise 10 depositors, the airway pressure AD value that collects in real time is kept in this array.After 10 depositors all were used, data began to fill downwards successively from first depositor.
Once more, define a variate-value, obtained the PEEP value in last one-period and be kept in this variable, and give relevant PEEP explicit function, realize PEEP reality this variate-value.
Relevant algorithmic procedure is: the airway pressure AD value that collects is put into array, and every 100MS compares the data in the array, has at least 4 numbers identical as finding, thinks that then this numerical value is actual PEEP value.This value is kept in the variable of definition, uses for relevant demonstration and calculating.
Because outlet valve is directly to atmosphere in exhalation process, the pressure in the air flue descends always, so the pressure AD value that collects in array has nothing in common with each other.Have 4 values identical as finding, that is to say, in 80MS, to equate during the pressure of air flue, this is, has just determined to exhale in the very first time and has finished, and the interior current pressure of air flue is exactly patient's a end expiratory positive pressure, i.e. PEEP value really.
One has all passed through self check because respirator is when start, so, can think that system is airtight, does not have the situation of gas leakage when start work just.As find that data in the array get same number and are less than 4, then may be because system's leakage of respirator itself causes, or not exhale, for the former owing to exhaling, this result calculated is not carried out, the PEEP that system still adopts one-period to calculate.For the latter, program continues circulation to be carried out, to detect real PEEP value.
Need to prove, can in computer system, carry out in the step shown in the flow chart of accompanying drawing such as a set of computer-executable instructions, and, though there is shown logical order in flow process, but in some cases, can carry out step shown or that describe with the order that is different from herein.
According to embodiments of the invention, provide a kind of end-tidal checkout gear.
Fig. 4 is the sketch map according to the end-tidal checkout gear of the embodiment of the invention.
As shown in Figure 4, this end-tidal checkout gear comprises: detection module 402, preservation module 404, judge module 406 and acquisition module 408.
Wherein, detection module 402 is used to detect the airway pressure value; Preservation module 404 is used to preserve a plurality of airway pressure values of detection; Judge module 406 is used for judging that whether the number of described a plurality of airway pressure value identical datas is greater than predetermined number; When acquisition module 408 is used for number at described a plurality of airway pressure value identical datas greater than described predetermined number, obtain the end expiratory positive pressure value.
Preferably, described preservation module 404 comprises: creation module is used to create array; Preserve submodule, be used to utilize described array to preserve a plurality of airway pressure values of described detection.
Preferably, described detection module 402 comprises: start module, be used for transferring to when exhaling from air-breathing detecting the patient, start intervalometer; Control module is used for controlling described intervalometer and resetting when detecting airway pressure and begin to rise.
As can be seen from the above description, the present invention can realize in time end expiratory positive pressure being detected, further, the present invention can be in a breathing cycle very first time fast and effeciently judge current patient's actual end expiratory positive pressure.Simultaneously, leak, given to evade, prevent because the injury that mistake in computation brought of respirator itself to the patient for the respirator system gas that may exist.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the one accountant, perhaps be distributed on the network that a plurality of accountant forms, alternatively, they can be realized with the executable program code of accountant, thereby, they can be stored in the storage device and carry out by accountant, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. an end-tidal detection method is characterized in that, comprising:
Detect the airway pressure value;
Preserve a plurality of airway pressure values that detect;
Whether the number of judging identical data in described a plurality of airway pressure value is greater than predetermined number; And
When the number of identical data is greater than described predetermined number in described a plurality of airway pressure values, obtain the end expiratory positive pressure value.
2. end-tidal detection method according to claim 1 is characterized in that, detects the airway pressure value and comprises:
Every interval very first time is detected once described airway pressure value.
3. end-tidal detection method according to claim 1 is characterized in that, detects the airway pressure value and comprises:
Transfer to when exhaling from air-breathing detecting the patient, start intervalometer; And
When detecting airway pressure and begin to rise, control described intervalometer and reset.
4. end-tidal detection method according to claim 1 is characterized in that, preserves a plurality of airway pressure values that detect and comprises:
Create array; And
Utilize described array to preserve a plurality of airway pressure values of described detection.
5. end-tidal detection method according to claim 4 is characterized in that described array is an one-dimension array, comprises 10 depositors.
6. end-tidal detection method according to claim 1 is characterized in that, judges whether the number of identical data in described a plurality of airway pressure value comprises greater than predetermined number:
Second time of every interval judges that whether the number of identical data in described a plurality of airway pressure value is greater than predetermined number.
7. according to each described end-tidal detection method in the claim 1 to 6, it is characterized in that, when the number of identical data is greater than described predetermined number in described a plurality of airway pressure values, obtains the end expiratory positive pressure value and comprise:
When the number of identical data is greater than described predetermined number in described a plurality of airway pressure values, with in described a plurality of airway pressure values greater than the data of described predetermined number as described end expiratory positive pressure value.
8. an end-tidal checkout gear is characterized in that, comprising:
Detection module is used to detect the airway pressure value;
Preserve module, be used to preserve a plurality of airway pressure values of detection;
Judge module is used for judging that whether the number of described a plurality of airway pressure value identical datas is greater than predetermined number; And
Acquisition module when being used for number at described a plurality of airway pressure value identical datas greater than described predetermined number, obtains the end expiratory positive pressure value.
9. end-tidal checkout gear according to claim 8 is characterized in that, described preservation module comprises:
Creation module is used to create array; And
Preserve submodule, be used to utilize described array to preserve a plurality of airway pressure values of described detection.
10. end-tidal checkout gear according to claim 8 is characterized in that, described detection module comprises:
Start module, be used for transferring to when exhaling from air-breathing detecting the patient, start intervalometer; And
Control module is used for controlling described intervalometer and resetting when detecting airway pressure and begin to rise.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010618130.3A CN102266606B (en) | 2010-12-31 | 2010-12-31 | End-expiratory detection method and device |
| PCT/CN2011/084659 WO2012089080A1 (en) | 2010-12-31 | 2011-12-26 | End-expiratory detection method and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010618130.3A CN102266606B (en) | 2010-12-31 | 2010-12-31 | End-expiratory detection method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102266606A true CN102266606A (en) | 2011-12-07 |
| CN102266606B CN102266606B (en) | 2014-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010618130.3A Expired - Fee Related CN102266606B (en) | 2010-12-31 | 2010-12-31 | End-expiratory detection method and device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102266606B (en) |
| WO (1) | WO2012089080A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012089080A1 (en) * | 2010-12-31 | 2012-07-05 | 北京谊安医疗系统股份有限公司 | End-expiratory detection method and apparatus |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4227523A (en) * | 1978-01-14 | 1980-10-14 | Dragerwerk Aktiengesellschaft | Respirator construction |
| US20050284476A1 (en) * | 2004-06-24 | 2005-12-29 | Blanch Paul B | Method and apparatus for non-invasive prediction of intrinsic positive end-expiratory pressure (PEEPi) in patients receiving ventilator support |
| CN101340941A (en) * | 2005-12-06 | 2009-01-07 | 马奎特紧急护理公司 | Method and apparatus for estimating lung volume at the end of exhalation |
| CN101636109A (en) * | 2007-03-15 | 2010-01-27 | Ric投资有限责任公司 | End-tidal gas estimation system and method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102266606B (en) * | 2010-12-31 | 2014-06-11 | 北京谊安医疗系统股份有限公司 | End-expiratory detection method and device |
-
2010
- 2010-12-31 CN CN201010618130.3A patent/CN102266606B/en not_active Expired - Fee Related
-
2011
- 2011-12-26 WO PCT/CN2011/084659 patent/WO2012089080A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4227523A (en) * | 1978-01-14 | 1980-10-14 | Dragerwerk Aktiengesellschaft | Respirator construction |
| US20050284476A1 (en) * | 2004-06-24 | 2005-12-29 | Blanch Paul B | Method and apparatus for non-invasive prediction of intrinsic positive end-expiratory pressure (PEEPi) in patients receiving ventilator support |
| CN101340941A (en) * | 2005-12-06 | 2009-01-07 | 马奎特紧急护理公司 | Method and apparatus for estimating lung volume at the end of exhalation |
| CN101636109A (en) * | 2007-03-15 | 2010-01-27 | Ric投资有限责任公司 | End-tidal gas estimation system and method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012089080A1 (en) * | 2010-12-31 | 2012-07-05 | 北京谊安医疗系统股份有限公司 | End-expiratory detection method and apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102266606B (en) | 2014-06-11 |
| WO2012089080A1 (en) | 2012-07-05 |
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