CN102266615A - Method and device for calculating minute ventilation of medical breathing equipment - Google Patents
Method and device for calculating minute ventilation of medical breathing equipment Download PDFInfo
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- CN102266615A CN102266615A CN2010106205736A CN201010620573A CN102266615A CN 102266615 A CN102266615 A CN 102266615A CN 2010106205736 A CN2010106205736 A CN 2010106205736A CN 201010620573 A CN201010620573 A CN 201010620573A CN 102266615 A CN102266615 A CN 102266615A
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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
- A61B5/087—Measuring breath flow
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/021—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes operated by electrical means
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
- A61B2562/02—Details of sensors specially adapted for in-vivo measurements
- A61B2562/029—Humidity sensors
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
- A61M2016/003—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter
- A61M2016/0033—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter electrical
- A61M2016/0036—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter electrical in the breathing tube and used in both inspiratory and expiratory phase
Abstract
The invention provides a method and a device for calculating minute ventilation of medical breathing equipment for solving the problem of slow response during measuring the ventilation of unit time in the prior art. The method comprises the following steps of: recording breathing data in real time, wherein the data comprise each suction moment and breathing tidal volume of last breathing of each suction; and when the breathing data is recorded each time, calculating the minute ventilation of the medical breathing equipment according to the recording operation and the data recorded in a preset time period before the recording operation. According to the technical scheme, the minute ventilation of a patient can be quickly and accurately calculated.
Description
Technical field
The present invention relates to a kind of computational methods and device of medical ventilator systems minute ventilation.
Background technology
Part breathing apparatus in the market, minute ventilation adds up according to the tidal volume of all breathings of one minute.Though it is slower that this computational methods accurately, respond, needed just can reflect in one minute.For the frequent situation of change of respiratory rate, the ventilation that this computational methods may be caught less than anti-border changes.
There is the slow problem of analytical unit time ventilation reaction in the prior art,, do not propose effective solution at present as yet for this problem.
Summary of the invention
Main purpose of the present invention provides a kind of computational methods and device of medical ventilator systems minute ventilation, to solve the slow problem of analytical unit time ventilation reaction in the prior art.
To achieve these goals, according to an aspect of the present invention, a kind of computational methods of medical ventilator systems minute ventilation are provided.
The computational methods of medical ventilator systems minute ventilation of the present invention comprise: real time record breath data, described data comprise the expiration tidal volume that the each air-breathing moment and described each air-breathing last time breathe; When the described breath data of each record, according to the minute ventilation of the Preset Time section before this record operation and this record operation with the described medical ventilator systems of data computation of interior record.
Further, the length of Preset Time section is 1 minute in the computational methods of medical ventilator systems minute ventilation of the present invention.Wherein data can also be included in once the air-breathing moment that does not have this Preset Time end under the air-breathing situation afterwards through Preset Time length, and numerical value is 0 expiration tidal volume.In addition, Preset Time length can be 10 seconds.
Further, the minute ventilation that calculates described medical ventilator systems also comprises before: at the record operation of the preset times before described this record operation, whether the moment of judging record operation for the first time and the moment of described this record operation differ less than 1 minute, if then the record of data that described this record operation is obtained and described preset times is operated the data that obtain and is write down operation and this record operation 1 minute data with interior record in the past as described this; Otherwise, moment of moment of record operation in the operation of the record of described preset times and described this record operation is differed data that the data that obtain less than a plurality of records operations of 1 minute and this record operation obtain as 1 minute data with interior record before described this record operation and this record operation.
Further, preset times can be 9.
Further, the minute ventilation that calculates described medical ventilator systems comprises according to following formula and calculating: MV=Vti_sum/ Δ T * 60; Wherein, MV represents the minute ventilation of described medical ventilator systems, and unit is for rising; Vti_sum represent before described this record operation and this record operation 1 minute with the tidal volume in the data of interior record add up and, unit is for rising; Δ T represents the 1 minute moment and described this record operation time difference constantly to write down operation the interior first time before described this record operation, and the time is second.
A kind of accountant of medical ventilator systems minute ventilation also is provided according to a further aspect in the invention.
The accountant of medical ventilator systems minute ventilation of the present invention comprises: logging modle, be used for record data when human body adopts medical ventilator systems to breathe, described data comprise the expiration tidal volume that the each air-breathing moment and described each air-breathing last time breathe; Computing module is used for when the described data of the each record of described logging modle, according to 1 minute minute ventilation with the described medical ventilator systems of data computation of interior record before this record operation and this record operation.
Further, also to be used for after once air-breathing through finish time of not having this Preset Time of record under the air-breathing situation in the Preset Time length and numerical value be 0 expiration tidal volume to described logging modle.
Further, the accountant of medical ventilator systems minute ventilation also comprises the selection module, be used for before described computing module calculates the minute ventilation of described medical ventilator systems, at being the record operation of the preset times of preface with the time order and function before described this record operation, judge that if the moment of the moment of record operation for the first time and described this record operation differed less than 1 minute the data that the data that then will described this record operation obtain and the record operation of described preset times obtain are as described this record operation and this record operation 1 minute data with interior record in the past; Otherwise moment of moment of record operation in the operation of the record of described preset times and described this record operation is differed data that the data that obtain less than a plurality of records operations of 1 minute and this record operation obtain as 1 minute data with interior record before described this record operation and this record operation.
Further, described computing module also is used for calculating according to following formula: MV=Vti_sum/ Δ T * 60; Wherein, MV represents the minute ventilation of described medical ventilator systems, and unit is for rising; Vti_sum represent before described this record operation and this record operation 1 minute with the tidal volume in the data of interior record add up and, unit is for rising; Δ T represents the 1 minute moment and described this record operation time difference constantly to write down operation the interior first time before described this record operation, and the time is second.
According to technical scheme of the present invention, real time record breath data, described data comprise the expiration tidal volume that the each air-breathing moment and described each air-breathing last time breathe; When the described breath data of each record, according to the minute ventilation of the Preset Time section before this record operation and this record operation with the described medical ventilator systems of data computation of interior record.Thereby solve the slow problem of analytical unit time ventilation reaction, can in the short as far as possible time, accurately calculate patient's minute ventilation.
Description of drawings
Figure of description 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 sketch map according to the key step of the computational methods of the medical ventilator systems minute ventilation of the embodiment of the invention;
Fig. 2 is the sketch map according to a kind of idiographic flow of the computational methods of the medical ventilator systems minute ventilation of the embodiment of the invention; And
Fig. 3 is the sketch map according to the main modular of the accountant of the medical ventilator systems minute ventilation 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 sketch map according to the key step of the computational methods of the medical ventilator systems minute ventilation of the embodiment of the invention.As shown in Figure 1, these computational methods mainly may further comprise the steps:
S102: real time record breath data, data comprise the expiration tidal volume that the each air-breathing moment and each air-breathing last time breathe;
S104: when each recording respiration data, according to the minute ventilation of the Preset Time section before this record operation and this record operation with the data computation medical ventilator systems of interior record.
The length of Preset Time section is 1 minute in the computational methods of the medical ventilator systems minute ventilation of the embodiment of the invention.Wherein data can also be included in once the air-breathing moment that does not have this Preset Time end under the air-breathing situation afterwards through Preset Time length, and numerical value is 0 expiration tidal volume.In addition, Preset Time length can be 10 seconds.Can also comprise before the minute ventilation of step S104 calculating medical ventilator systems: at the record operation of the preset times before described this record operation, whether the moment of judging record operation for the first time and moment of this record operation differ less than 1 minute, if then the record of data that this record operation is obtained and preset times is operated the data that obtain and is write down operation and this record operation 1 minute data with interior record in the past as this; Otherwise, moment of moment of record operation in the operation of the record of preset times and this record operation is differed data that the data that obtain less than a plurality of records operations of 1 minute and this record operation obtain as 1 minute data with interior record before described this record operation and this record operation.Especially, wherein preset times can be 9.By above scheme, the situation that corresponding change of respiratory rate is frequent, this computational methods can reflect patient's minute ventilation rapidly and accurately.
Fig. 2 is the sketch map according to a kind of idiographic flow of the computational methods of the medical ventilator systems minute ventilation of the embodiment of the invention.As shown in Figure 2:
S201: air-breathing beginning;
S202: when each air-breathing beginning of patient, write down one group of this air-breathing time;
S203: carrying out step S201, the expiration tidal volume of record breathing last time in the time of step S202;
S204: it is air-breathing whether judging distance inspiratory duration last time had in 10 seconds, if having, enters step S205, otherwise enter step S206;
S205: whether judge air-breathing number of times greater than 9, if enter step S207, otherwise enter step S202;
S206: air-breathing 10s did not still have when air-breathing apart from last time, and the record current time is an initial time, and tidal volume is 0;
S207: keep the data of nearest 9 group records, 9 groups of data initializations are the current time, and tidal volume is 0;
S208: computation time is poor, and its computing formula is: time difference=current record time-original records time;
S209: whether the time difference of judging 9 records surpasses 1 minute, if enter step S210, otherwise enter step S211;
S210: from search, know that group data markers that finds the up-to-date once time difference of record of distance to be less than or equal to 1 minute the earliest the writing time of those group data one by one backward is the initial data group;
The time difference of S211:9 record was less than 1 minute, and liquor-saturated that group data markers is the initial data group, and air-breathing tidal volume is added up;
S212: when each record data, carry out minute ventilation and calculate, time difference from the initial data group to the latest data group is difference DeltaT (s) computation time, air-breathing tidal volume from the initial data group to the latest data group record add up and for Vti_sum (L), then the computing formula of minute ventilation MV is: MV (L)=Vti_sum/DeltaT*60;
S213: finish.
Adopted above-mentioned minute ventilation numerical procedure, test with the PF300 traffic analyzer, test result shows the fastest 4s, just can go out current minute ventilation by accurate response in the slowest 1 minute, having improved the monitoring response speed greatly, is a kind of real-time computing technique of minute ventilation.
Fig. 3 is the sketch map according to the main modular of the accountant of the medical ventilator systems minute ventilation of the embodiment of the invention.As shown in Figure 3, the main modular of the accountant 30 of medical ventilator systems minute ventilation comprises:
Logging modle 31 is used for record data when human body adopts medical ventilator systems to breathe, and data comprise the expiration tidal volume that the each air-breathing moment and each air-breathing last time breathe;
Computing module 33 is used for when the described data of the each record of logging modle, according to 1 minute minute ventilation with the data computation medical ventilator systems of interior record before this record operation and this record operation.
It is 0 expiration tidal volume that logging modle 31 wherein also is used for after once air-breathing through the finish time that does not have this Preset Time of record under the air-breathing situation in the Preset Time length and numerical value.
In addition, the accountant of medical ventilator systems minute ventilation can also comprise the selection module, be used for before computing module 33 calculates the minute ventilation of medical ventilator systems, at being the record operation of the preset times of preface with the time order and function before described this record operation, judge that if the moment of the moment of record operation for the first time and this record operation differed less than 1 minute then the data that obtain of the record operation of data that this record operation is obtained and preset times are as 1 minute data with interior record before this record operation and this record operation; Otherwise moment of moment of record operation in the operation of the record of preset times and this record operation is differed data that the data that obtain less than a plurality of records operations of 1 minute and this record operation obtain as 1 minute data with interior record before this record operation and this record operation.
Especially, the computing module in the accountant 33 also is used for calculating according to following formula: MV=Vti_sum/ Δ T * 60; Wherein, MV represents the minute ventilation of medical ventilator systems, and unit is for rising; Vti_sum represent before this record operation and this record operation 1 minute with the tidal volume in the data of interior record add up and, unit is for rising; Δ T represents the 1 minute moment and this record operation time difference constantly to write down operation the interior first time before described this record operation, and the time is second.
According to the technical scheme of the embodiment of the invention, real time record breath data, data comprise the expiration tidal volume that the each air-breathing moment and each air-breathing last time breathe; When each recording respiration data, according to the minute ventilation of the Preset Time section before this record operation and this record operation with the data computation medical ventilator systems of interior record.Thereby solve the slow problem of analytical unit time ventilation reaction, can in the short as far as possible time, accurately calculate patient's minute ventilation.
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 (11)
1. the computational methods of a medical ventilator systems minute ventilation is characterized in that, comprising:
Real time record breath data, described data comprise the expiration tidal volume that the each air-breathing moment and described each air-breathing last time breathe;
When the described breath data of each record, according to the minute ventilation of the Preset Time section before this record operation and this record operation with the described medical ventilator systems of data computation of interior record.
2. method according to claim 1 is characterized in that, the length of described Preset Time section is 1 minute.
3. method according to claim 1 and 2 is characterized in that, described data also are included in once the air-breathing moment that does not have this Preset Time end under the air-breathing situation afterwards through Preset Time length, and numerical value is 0 expiration tidal volume.
4. method according to claim 3 is characterized in that, described Preset Time length is 10 seconds.
5. method according to claim 1 and 2 is characterized in that, the minute ventilation that calculates described medical ventilator systems also comprises before:
At the record operation of the preset times before described this record operation, whether the moment of judging record operation for the first time and the moment of described this record operation differ less than 1 minute;
If then the record of data that described this record operation is obtained and described preset times is operated the data that obtain and is write down operation and this record operation 1 minute data with interior record in the past as described this;
Otherwise, moment of moment of record operation in the operation of the record of described preset times and described this record operation is differed data that the data that obtain less than a plurality of records operations of 1 minute and this record operation obtain as 1 minute data with interior record before described this record operation and this record operation.
6. method according to claim 5 is characterized in that, described preset times is 9.
7. according to each described method in the claim 1 to 5, it is characterized in that the minute ventilation that calculates described medical ventilator systems comprises according to following formula and calculating: MV=Vti_sum/ Δ T * 60; Wherein, MV represents the minute ventilation of described medical ventilator systems, and unit is for rising; Vti_sum represent before described this record operation and this record operation 1 minute with the tidal volume in the data of interior record add up and, unit is for rising; Δ T represents the 1 minute moment and described this record operation time difference constantly to write down operation the interior first time before described this record operation, and the time is second.
8. the accountant of a medical ventilator systems minute ventilation is characterized in that, comprising:
Logging modle is used for record data when human body adopts medical ventilator systems to breathe, and described data comprise the expiration tidal volume that the each air-breathing moment and described each air-breathing last time breathe;
Computing module is used for when the described data of the each record of described logging modle, according to 1 minute minute ventilation with the described medical ventilator systems of data computation of interior record before this record operation and this record operation.
9. device according to claim 8 is characterized in that, it is 0 expiration tidal volume that described logging modle also is used for after once air-breathing through the finish time that does not have this Preset Time of record under the air-breathing situation in the Preset Time length and numerical value.
10. device according to claim 8, it is characterized in that, also comprise the selection module, be used for before described computing module calculates the minute ventilation of described medical ventilator systems, at being the record operation of the preset times of preface with the time order and function before described this record operation, judge that if the moment of the moment of record operation for the first time and described this record operation differed less than 1 minute the data that the data that then will described this record operation obtain and the record operation of described preset times obtain are as described this record operation and this record operation 1 minute data with interior record in the past; Otherwise moment of moment of record operation in the operation of the record of described preset times and described this record operation is differed data that the data that obtain less than a plurality of records operations of 1 minute and this record operation obtain as 1 minute data with interior record before described this record operation and this record operation.
11. according to Claim 8,9 or 10 described devices is characterized in that, described computing module also is used for calculating according to following formula: MV=Vti_sum/ Δ T * 60; Wherein, MV represents the minute ventilation of described medical ventilator systems, and unit is for rising; Vti_sum represent before described this record operation and this record operation 1 minute with the tidal volume in the data of interior record add up and, unit is for rising; Δ T represents the 1 minute moment and described this record operation time difference constantly to write down operation the interior first time before described this record operation, and the time is second.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010620573.6A CN102266615B (en) | 2010-12-31 | 2010-12-31 | Method and device for calculating minute ventilation of medical breathing equipment |
| PCT/CN2011/084702 WO2012089094A1 (en) | 2010-12-31 | 2011-12-26 | Method and device for calculating minute ventilation of medical breathing apparatus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010620573.6A CN102266615B (en) | 2010-12-31 | 2010-12-31 | Method and device for calculating minute ventilation of medical breathing equipment |
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| CN102266615A true CN102266615A (en) | 2011-12-07 |
| CN102266615B CN102266615B (en) | 2014-08-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012089094A1 (en) * | 2010-12-31 | 2012-07-05 | 北京谊安医疗系统股份有限公司 | Method and device for calculating minute ventilation of medical breathing apparatus |
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| US20050205093A1 (en) * | 2004-03-16 | 2005-09-22 | Jabour Ernest R | Method and program for calulating ventilator weaning duration |
| CN101076283A (en) * | 2003-12-15 | 2007-11-21 | 麦德托尼克公司 | Method and apparatus for modifying delivery of a therapy in response to onset of sleep |
| CN101310678A (en) * | 2008-05-07 | 2008-11-26 | 上海力申科学仪器有限公司 | Measuring method of anesthesia apparatus tidal volume |
| US20100100000A1 (en) * | 2008-09-24 | 2010-04-22 | Kent Lee | Minute Ventilation-Based Disordered Breathing Detection |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101756703B (en) * | 2008-12-25 | 2012-10-31 | 北京谊安医疗系统股份有限公司 | Method for detecting expiratory humidity volumes and device using same |
| WO2010138388A1 (en) * | 2009-05-26 | 2010-12-02 | Cardiac Pacemakers, Inc. | Ventilation sensor rate response normalization and calculation |
| CN102266615B (en) * | 2010-12-31 | 2014-08-06 | 北京谊安医疗系统股份有限公司 | Method and device for calculating minute ventilation of medical breathing equipment |
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| CN101076283A (en) * | 2003-12-15 | 2007-11-21 | 麦德托尼克公司 | Method and apparatus for modifying delivery of a therapy in response to onset of sleep |
| US20050205093A1 (en) * | 2004-03-16 | 2005-09-22 | Jabour Ernest R | Method and program for calulating ventilator weaning duration |
| CN101310678A (en) * | 2008-05-07 | 2008-11-26 | 上海力申科学仪器有限公司 | Measuring method of anesthesia apparatus tidal volume |
| US20100100000A1 (en) * | 2008-09-24 | 2010-04-22 | Kent Lee | Minute Ventilation-Based Disordered Breathing Detection |
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| WO2012089094A1 (en) * | 2010-12-31 | 2012-07-05 | 北京谊安医疗系统股份有限公司 | Method and device for calculating minute ventilation of medical breathing apparatus |
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| CN102266615B (en) | 2014-08-06 |
| WO2012089094A1 (en) | 2012-07-05 |
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