CN113040747A - Lung function monitoring and evaluating equipment and method - Google Patents
Lung function monitoring and evaluating equipment and method Download PDFInfo
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- CN113040747A CN113040747A CN202110293398.2A CN202110293398A CN113040747A CN 113040747 A CN113040747 A CN 113040747A CN 202110293398 A CN202110293398 A CN 202110293398A CN 113040747 A CN113040747 A CN 113040747A
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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
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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
- A61B5/085—Measuring impedance of respiratory organs or lung elasticity
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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
Abstract
The invention provides a lung function monitoring and evaluating device and method, wherein the device comprises: the flow rate measurement module comprises a measurement pipeline and is used for acquiring the respiratory flow rate of the subject; a positive pressure generating module for generating a positive pressure between the oral cavity of the subject and the measurement conduit; and the evaluation module is used for obtaining a lung function evaluation result according to the first respiratory flow rate and the second respiratory flow rate, wherein the first respiratory flow rate is the respiratory flow rate measured when positive pressure is not generated, and the second respiratory flow rate is the respiratory flow rate measured when positive pressure is generated. The pulmonary function monitoring and evaluating equipment disclosed by the invention is simple in structure and low in cost, is convenient to popularize to ordinary families with the monitoring and evaluating requirements on airway airflow limitation, is simple and convenient in flow, has very low matching requirement degree on a subject, and overcomes the defect that the conventional forced pulmonary function is difficult to meet the quality control requirement.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a lung function monitoring and evaluating device and method.
Background
Both chronic obstructive pulmonary disease and asthma are diseases characterized by airflow limitation, forced pulmonary function is a main objective index for clinically evaluating the severity of the illness and the treatment effect of patients with chronic obstructive pulmonary disease and patients with asthma at present, but obtaining an accurate test result of the forced pulmonary function requires the patients to fully coordinate, and requires the patients to perform enough 'effort' activities, which satisfies the detection difficulty of quality control far exceeding that of ordinary blood pressure measurement. This also becomes a significant obstacle to the movement of the forced lung function from hospital to hospital and the realization of home-based detection.
In order to overcome the defect that the detection of forced lung function is difficult to meet the quality control requirement, a lung function evaluation method called Negative Expiratory Pressure (NEP) method is invented. The expiratory pressure method is a method for detecting that the expiratory flow rate of a patient is limited in a tidal breathing state, and is a method for detecting a ventilation function only in a tidal breathing state without requiring the patient to breathe hard. The method can be applied to infants, mechanically ventilated patients and patients with poor coordination cognition, and the quality control difficulty is far less than that of the traditional forceful lung function instrument.
Although the expiratory negative pressure method has the outstanding advantage of low quality control requirement compared with the traditional forced lung function, an accurate negative pressure generating device is needed to ensure the accuracy of an evaluation result, and detection and evaluation equipment is complex and expensive, is difficult to popularize in ordinary families, and is mainly applied to hospitals.
Disclosure of Invention
Technical problem to be solved
In view of the above technical problems, the present invention provides a lung function monitoring and evaluating device, which is used to at least partially solve the above technical problems.
(II) technical scheme
The present invention provides a pulmonary function monitoring and evaluating apparatus, including: a flow rate measurement module 2 comprising a measurement conduit 7 for obtaining a respiratory flow rate of the subject; a positive pressure generating module 1 for generating a positive pressure between the oral cavity of the subject and the measurement conduit 7; and the evaluation module 3 is used for obtaining a lung function evaluation result according to a first respiratory flow rate and a second respiratory flow rate, wherein the first respiratory flow rate is the respiratory flow rate measured when positive pressure is not generated, and the second respiratory flow rate is the respiratory flow rate measured when positive pressure is generated.
Optionally, the positive pressure generating module 1 is an additional throttling element for increasing the duct flow resistance of the measuring duct 7, generating a positive pressure.
Optionally, the evaluation module 3 comprises: a first calculation unit 301 for calculating a first respiratory volume from a first respiratory flow rate; a second calculation unit 302 for calculating a second respiratory volume from the second respiratory flow rate; a first curve generating unit 303 for generating a first respiratory flow rate volume map from the first respiratory flow rate and the first respiratory volume; a second curve generation unit 304 for generating a second respiratory flow rate volume map from the second respiratory flow rate and the second respiratory volume; and a comparison unit 305, configured to compare the first respiratory flow rate volume map and the second respiratory flow rate volume map, and obtain a lung function evaluation result according to the comparison result.
Optionally, the through-channel portion of the additional orifice may be adjustable in percentage of the cross-sectional area of the channel and/or the length of the additional orifice.
Optionally, the flow rate measurement module 2 comprises: at least one of a turbine type measuring module, a differential pressure type measuring module, a temperature differential type measuring module and an ultrasonic time differential type measuring module; the turbine type measuring module measures the respiratory flow rate of a testee through measuring the turbine rotating speed in the measuring pipeline 7, and the differential pressure type measuring module, the temperature differential type measuring module and the ultrasonic time differential type measuring module measure the respiratory flow rate of the testee through measuring the pressure difference, the temperature difference and the ultrasonic time difference of two sampling points distributed in the measuring pipeline 7 along the radial direction respectively.
Optionally, the lung function monitoring and evaluating device further comprises: the wireless communication module 4 is used for wirelessly transmitting the lung function evaluation result to a computer, an intelligent terminal or a cloud server; the human-computer interaction input and output module 5 is used for receiving a control signal input by an operator and displaying a lung function evaluation result; and the power supply management module 6 is used for providing a power supply for the lung function monitoring and evaluating equipment.
Another aspect of the present invention provides a lung function monitoring and evaluating method based on any one of the embodiments of the lung function monitoring and evaluating apparatus of the present invention, including: the positive pressure generating module 1 does not work, and the respiratory flow rate of the testee is measured by the flow rate measuring module 2 to obtain a first respiratory flow rate; generating positive pressure between the oral cavity of the subject and the measuring pipeline 7 through the positive pressure generating module 1, and measuring the respiratory flow rate of the subject again by using the flow rate measuring module 2 to obtain a second respiratory flow rate; assessing lung function of the subject based on the first respiratory flow rate and the second respiratory flow rate monitoring.
Optionally, assessing lung function of the subject based on the first flow rate and the second flow rate monitoring comprises: calculating to obtain a first respiratory volume according to the first respiratory flow rate, and obtaining a first respiratory flow rate volume map by combining the first respiratory flow rate and the first respiratory volume; calculating to obtain a second respiratory volume according to the second respiratory flow rate, and obtaining a second respiratory flow rate volume graph by combining the second respiratory flow rate and the second respiratory volume; comparing the first respiratory flow rate volume graph with the second respiratory flow rate volume graph to obtain a comparison result; and (5) evaluating the lung function of the subject according to the comparison result monitoring.
Optionally, the monitoring assessing lung function of the subject based on the comparison comprises: the subject's lung function is assessed based on the interior areas, intersection locations and shape monitoring of the first and second flow rate volume curves.
Optionally, the lung function monitoring and evaluating method further comprises: and calibrating the performance parameters of the flow rate measuring module 2 by using a standard flow rate generator.
(III) advantageous effects
The invention provides a lung function monitoring and evaluating device and a method, wherein the flow obstruction of detected gas is increased by adding a positive pressure generating module such as an additional throttling element, positive pressure is generated between the oral cavity of a subject and a measuring pipeline, so that a respiratory flow velocity volume map of the subject can be calculated when the additional throttling element is added and the additional throttling element is not added, and the lung function of the subject can be evaluated by comparing the two respiratory flow velocity volume maps. The pulmonary function monitoring and evaluating equipment disclosed by the invention is simple in structure and low in cost, is convenient to popularize to ordinary families with the monitoring and evaluating requirements on airway airflow limitation, is simple and convenient in flow, has very low matching requirement degree on a subject, and overcomes the defect that the conventional forced pulmonary function is difficult to meet the quality control requirement.
Drawings
FIG. 1 schematically illustrates a block diagram of a lung function monitoring and assessment device in accordance with an embodiment of the present invention;
FIG. 2 is a schematic diagram of a lung function monitoring and evaluating apparatus according to an embodiment of the present invention;
FIG. 3 schematically illustrates a block diagram of the lung function monitoring and assessment device assessment module according to an embodiment of the present invention;
FIG. 4 schematically illustrates a flow chart of a method of lung function monitoring assessment in accordance with an embodiment of the present invention;
FIG. 5 is a schematic representation of a comparison of respiratory flow rate volume before and after the addition of an additional orifice in an embodiment of the present invention.
[ description of reference ]
1-positive pressure generating module
2-flow rate measuring module
3-evaluation Module
301-first calculation unit
302-second calculation unit
303-first curve generating unit
304-second curve generation unit
305-comparison unit
4-wireless communication module
5-man-machine interaction input and output module
6-Power management Module
7-measuring pipe
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific embodiments and the accompanying drawings.
It should be noted that in the drawings or description, the same drawing reference numerals are used for similar or identical parts. Features of the embodiments illustrated in the description may be freely combined to form new embodiments without conflict, and each claim may be individually referred to as an embodiment or features of the claims may be combined to form a new embodiment, and in the drawings, the shape or thickness of the embodiment may be enlarged and simplified or conveniently indicated. Further, elements or implementations not shown or described in the drawings are of a form known to those of ordinary skill in the art. Additionally, while exemplifications of parameters including particular values may be provided herein, it is to be understood that the parameters need not be exactly equal to the respective values, but may be approximated to the respective values within acceptable error margins or design constraints.
Unless a technical obstacle or contradiction exists, the above-described various embodiments of the present invention may be freely combined to form further embodiments, which are within the scope of the present invention.
Although the present invention has been described in connection with the accompanying drawings, the embodiments disclosed in the drawings are intended to be illustrative of preferred embodiments of the present invention and should not be construed as limiting the invention. The dimensional proportions in the figures are merely schematic and are not to be understood as limiting the invention.
Although a few embodiments of the present general inventive concept have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the general inventive concept, the scope of which is defined in the claims and their equivalents.
Fig. 1 schematically shows a block diagram of a lung function monitoring and evaluating apparatus according to an embodiment of the present invention.
According to an embodiment of the present invention, as shown in fig. 1, a lung function monitoring and evaluating apparatus includes, for example: a flow rate measurement module 2 comprising a measurement conduit 7 for obtaining a respiratory flow rate of the subject; a positive pressure generating module 1 for generating a positive pressure between the oral cavity of the subject and the measurement conduit 7; and the evaluation module 3 is used for obtaining a lung function evaluation result according to a first respiratory flow rate and a second respiratory flow rate, wherein the first respiratory flow rate is the respiratory flow rate measured when positive pressure is not generated, and the second respiratory flow rate is the respiratory flow rate measured when positive pressure is generated.
Fig. 2 is a schematic diagram showing a configuration of a lung function monitoring and evaluating apparatus according to an embodiment of the present invention.
According to an embodiment of the invention, as shown in fig. 2, the invention makes it possible, for example, to connect an additional throttle in a gastight manner at one end of the measuring tube 7. Wherein the area of the conduit through portion of the additional restriction member is adjustable in percentage to the cross-sectional area of the conduit, and similarly to a valve, the flow rate of the gas exhaled by the subject through the measurement conduit 7 can be controlled by adjusting the area percentage. The flow rate can also be controlled by controlling the length of the additional throttling element, for example, when the part of the additional throttling element which acts as a gas barrier is made of a gas permeable material such as sponge, the change of the length and the density (namely, the gas permeability) of the additional throttling element can obviously influence the gas flow rate. The length standard of the additional throttling element can be referred to, for example, that the air flow resistance after the additional throttling element is added is within 5 times of the air flow resistance when the additional throttling element is not added. The material of the part of the additional throttling element which has the function of obstructing the airflow can also be solid airtight material such as metal, nonmetal and the like.
According to the embodiment of the invention, the percentage of the inner through part of the throttling piece to the inner cross-sectional area of the pipeline can be from 90% to 1%, and the specific shape of the throttling piece can be in various forms such as honeycomb, square, circle and the like.
According to the embodiment of the present invention, the flow rate measurement module 2 for measuring the respiratory flow rate of the subject may adopt any one or a combination of several devices based on the operating principles of turbine, differential pressure, temperature difference, ultrasonic time difference, etc. In the turbine-based device, one end of the measuring pipeline is provided with a turbine for measuring the airflow speed, and in the differential pressure-based device, gas pressure sensors can be placed at different parts of the measuring pipeline according to specific conditions. Similarly, in devices based on differential temperature differences, temperature measuring components may be placed in different parts of the measurement conduit. In the device based on the ultrasonic time difference, for example, ultrasonic wave generating and receiving modules can be respectively arranged at two ends of a measuring pipeline, and different gas flow velocities can also have different influences on the propagation time of ultrasonic waves.
Fig. 3 schematically shows a block diagram of the lung function monitoring and evaluating device evaluation module according to an embodiment of the present invention.
According to an embodiment of the invention, as shown in fig. 3, the evaluation module 3 comprises, for example: a first calculation unit 301 for calculating a first respiratory volume from a first respiratory flow rate. A second calculation unit 302 for calculating a second respiratory volume based on the second respiratory flow rate. A first curve generating unit 303 for generating a first respiratory flow rate volume map from the first respiratory flow rate and the first respiratory volume. A second curve generation unit 304 for generating a second respiratory flow rate volume map from the second respiratory flow rate and the second respiratory volume. And a comparison unit 305 for comparing the first respiratory flow rate volume map and the second respiratory flow rate volume map to obtain a lung function evaluation result according to the comparison result.
According to an embodiment of the present invention, as shown in fig. 1, the lung function monitoring and evaluating apparatus further includes, for example: the wireless communication module 4 is used for wirelessly transmitting the lung function evaluation result to a computer, an intelligent terminal or a cloud server; the human-computer interaction input and output module 5 is used for receiving a control signal input by an operator and displaying a lung function evaluation result; and the power supply management module 6 is used for providing a power supply for the lung function monitoring and evaluating equipment.
Fig. 4 schematically shows a flowchart of a lung function monitoring and evaluating method according to an embodiment of the present invention.
According to an embodiment of the present invention, as shown in fig. 4, the lung function monitoring and evaluating method includes, for example:
s401, the positive pressure generating module 1 does not work, and the respiratory flow rate of the testee is measured by the flow rate measuring module 2 to obtain a first respiratory flow rate.
S402, generating positive pressure between the oral cavity of the subject and the measuring pipeline 7 through the positive pressure generating module 1, and measuring the respiratory flow rate of the subject again through the flow rate measuring module 2 to obtain a second respiratory flow rate.
And S403, assessing the lung function of the subject based on the first flow rate and the second flow rate monitoring.
According to the embodiment of the present invention, in the case where the positive pressure generating module 1, for example, an additional throttle member is not connected, as shown in fig. 2, for example, a subject holds the nose with a nose clip in a tidal breathing state and performs exhalation and inhalation with one end of the mouth including the measuring tube 7, the sensing portion in the flow rate measuring module 2 measures the flow rate change in the exhalation and inhalation, respectively, integrates the flow rate in the exhalation and inhalation with time to obtain the exhalation volume and the inhalation volume, respectively, and further plots the volume as an abscissa and the flow rate as an ordinate to obtain the solid line portion in the flow rate volume F-V plot in the tidal breathing state as shown in fig. 5. Then, the additional orifice is connected to the measurement tube 7 in an airtight manner, and the expiratory and inspiratory flow rates of the subject after the additional orifice is added are measured without changing other parameters, and the expiratory and inspiratory volumes are calculated, thereby obtaining a flow rate volume F-V curve in the tidal breathing state as shown by a dotted line in fig. 5.
By comparing the solid and dashed features in the flow volume F-V plot, the lung function of a subject can be assessed. For example, the change of the inner area of the curve can be used to determine whether the lung function of the subject is normal. For healthy people, as the air flow of the air passage is not limited, after the additional throttling element is added, although the internal pressure of the pipeline is increased due to the increase of air resistance, the internal area of the flow rate volume F-V curve graph does not change obviously due to the tidal breathing state rather than the forced breathing state in the natural state; however, for the patient with airway limitation with slow-obstructive lung or asthma, after the additional throttling element is added, the increase of the internal pressure of the measuring pipeline 7 caused by the increase of the air resistance plays a role in providing a certain positive end-expiratory pressure (PEEP), namely positive end-expiratory pressure support, for the subject, so that the alveoli with the slow-obstructive lung or asthma are not easy to be closed in the expiratory phase, the alveolar-arterial oxygen partial pressure difference is increased, the resolution of pulmonary interstitium and alveolar edema is promoted, the compliance of the lungs and the alveolar ventilation are improved, and thus a flow-volume F-V curve shown by a dotted line in fig. 5 is generally obtained, namely the area inside the F-V curve obtained by the test of the patient with airway limitation with slow-obstructive lung or asthma is obviously increased. As shown in FIG. 5, for example, the inside of the graph above the horizontal axis represents the expiratory phase and the inside of the graph below the horizontal axis represents the inspiratory phase. When an additional throttling element is added, the area inside the dotted line in the flow-volume F-V curve obtained by measurement is obviously larger than the area inside the solid line, and certain airflow limitation exists in the lung of the corresponding subject.
According to the embodiment of the invention, different airway airflow limitation forms also cause changes of other characteristics such as the position of the intersection point of the solid line and the dotted line in the flow volume F-V curve and the shape of the dotted line in the flow volume F-V curve, so that the evaluation of the airway airflow limitation degree of the subject can be realized based on the changes of the characteristics.
According to an embodiment of the present invention, the lung function monitoring and evaluating method further includes, for example: and calibrating the performance parameters of the flow rate measuring module 2 by using a standard flow rate generator. For example, it may be calibrated at the time of manufacture of the device and not calibrated again at the time of use by the subject. To ensure long-term accuracy of the equipment usage, the calibration may be recalibrated by the manufacturer or a professional after a certain period of use (e.g., one year).
The method embodiment is similar to the apparatus embodiment in portions where details are not given, and please refer to the apparatus embodiment, which is not described herein again.
In summary, the present invention provides a lung function monitoring and evaluating apparatus and method, which can evaluate the lung function of a subject by comparing the characteristic changes of the flow rate volume curve before and after adding an additional restriction. The pulmonary function monitoring and evaluating equipment disclosed by the invention is simple in structure and low in cost, is convenient to popularize to ordinary families with the monitoring and evaluating requirements on airway airflow limitation, is simple and convenient in flow, has very low matching requirement degree on a subject, and overcomes the defect that the conventional forced pulmonary function is difficult to meet the quality control requirement.
It should be understood that the specific order or hierarchy of steps in the processes disclosed is an example of exemplary approaches. Based upon design preferences, it is understood that the specific order or hierarchy of steps in the processes may be rearranged without departing from the scope of the present disclosure. The accompanying method claims present elements of the various steps in a sample order, and are not intended to be limited to the specific order or hierarchy.
In the foregoing detailed description, various features are grouped together in a single embodiment for the purpose of streamlining the disclosure. This method of disclosure is not to be interpreted as reflecting an intention that the claimed embodiments of the subject matter require more features than are expressly recited in each claim. Rather, as the following claims reflect, invention lies in less than all features of a single disclosed embodiment. Thus, the following claims are hereby expressly incorporated into the detailed description, with each claim standing on its own as a separate preferred embodiment of the invention.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention. Furthermore, to the extent that the term "includes" is used in either the detailed description or the claims, such term is intended to be inclusive in a manner similar to the term "comprising" as "comprising" is interpreted when employed as a transitional word in a claim. Furthermore, any use of the term "or" in the specification of the claims is intended to mean a "non-exclusive or".
Claims (10)
1. A pulmonary function monitoring and assessment device, comprising:
a flow rate measurement module (2) comprising a measurement conduit (7) for acquiring a respiratory flow rate of the subject;
a positive pressure generating module (1) for generating a positive pressure between the oral cavity of the subject and the measurement conduit (7);
and the evaluation module (3) is used for obtaining a lung function evaluation result according to a first respiratory flow rate and a second respiratory flow rate, wherein the first respiratory flow rate is the respiratory flow rate measured when positive pressure is not generated, and the second respiratory flow rate is the respiratory flow rate measured when positive pressure is generated.
2. The lung function monitoring and assessment device according to claim 1, characterized in that the positive pressure generating module (1) is an additional restriction for increasing the duct flow resistance of the measurement duct (7), generating the positive pressure.
3. The pulmonary function monitoring and assessment device according to claim 1, wherein the assessment module (3) comprises:
a first calculation unit (301) for calculating a first respiratory volume from the first respiratory flow rate;
a second calculation unit (302) for calculating a second respiratory volume from the second respiratory flow rate;
a first curve generation unit (303) for generating a first respiratory flow rate volume map from the first respiratory flow rate and the first respiratory volume;
a second curve generation unit (304) for generating a second respiratory flow rate volume map from the second respiratory flow rate and the second respiratory volume;
and the comparison unit (305) is used for comparing the first respiratory flow velocity volume map with the second respiratory flow velocity volume map and obtaining the lung function evaluation result according to the comparison result.
4. A lung function monitoring and assessment device according to claim 2, characterized in that the conduit through-going portion of the additional throttle is a percentage of the conduit cross-sectional area and/or the length of the additional throttle is adjustable.
5. The lung function monitoring and assessment device according to claim 1, wherein the flow rate measurement module (2) comprises:
at least one of a turbine type measuring module, a differential pressure type measuring module, a temperature differential type measuring module and an ultrasonic time differential type measuring module;
the turbine type measuring module measures the respiratory flow rate of a subject by measuring the turbine rotating speed in the measuring pipeline (7), and the differential pressure type measuring module, the temperature differential type measuring module and the ultrasonic time differential type measuring module respectively measure the respiratory flow rate of the subject by measuring the pressure difference, the temperature difference and the ultrasonic time difference of two sampling points which are distributed in the measuring pipeline (7) along the radial direction.
6. The pulmonary function monitoring and assessment device according to claim 1, further comprising:
the wireless communication module (4) is used for wirelessly transmitting the lung function evaluation result to a computer, an intelligent terminal or a cloud server;
the human-computer interaction input and output module (5) is used for receiving a control signal input by an operator and displaying the lung function evaluation result;
and the power supply management module (6) is used for providing a power supply for the lung function monitoring and evaluating equipment.
7. A pulmonary function monitoring and evaluating method based on the pulmonary function monitoring and evaluating apparatus according to any one of claims 1 to 6, comprising:
the positive pressure generating module (1) does not work, and the respiratory flow rate of the testee is measured by the flow rate measuring module (2) to obtain a first respiratory flow rate;
generating positive pressure between the oral cavity of the subject and a measuring pipeline (7) through a positive pressure generating module (1), and measuring the respiratory flow rate of the subject again by using a flow rate measuring module (2) to obtain a second respiratory flow rate;
assessing lung function of the subject based on the first respiratory flow rate and the second respiratory flow rate monitoring.
8. The pulmonary function monitoring assessment method of claim 7, wherein the assessing pulmonary function of the subject based on the first and second flow rate monitoring comprises:
calculating to obtain a first respiratory volume according to the first respiratory flow rate, and combining the first respiratory flow rate and the first respiratory volume to obtain a first respiratory flow rate-volume graph;
calculating to obtain a second respiratory volume according to the second respiratory flow rate, and combining the second respiratory flow rate and the second respiratory volume to obtain a second respiratory flow rate-volume graph;
comparing the first respiratory flow velocity volume graph with the second respiratory flow velocity volume graph to obtain a comparison result;
and monitoring and evaluating the lung function of the subject according to the comparison result.
9. The method of claim 8, wherein the monitoring and evaluating lung function of the subject based on the comparison comprises:
assessing the subject's lung function based on the internal areas, intersection locations and shape monitoring of the first and second flow rate volume curves.
10. The pulmonary function monitoring and assessment method according to claim 7, further comprising:
and calibrating the performance parameters of the flow rate measurement module (2) by using a standard flow rate generator.
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| GB2077444A (en) * | 1980-06-06 | 1981-12-16 | Draegerwerk Ag | Determining at least two parameters of a patient's respiratory system |
| CN1098279A (en) * | 1993-03-10 | 1995-02-08 | 克里斯蒂安·弗马克 | The method and apparatus that is used for monitoring lung function |
| CN107205695A (en) * | 2013-11-06 | 2017-09-26 | 呼吸技术医疗有限公司 | Method and apparatus for measuring airway resistance and lung compliance |
| US20180168484A1 (en) * | 2015-05-17 | 2018-06-21 | N E Field Diagnostics Ltd. | Pulmonary function test devices and methods |
| CN109803708A (en) * | 2016-10-07 | 2019-05-24 | 皇家飞利浦有限公司 | Breathing is controlled using pressure to estimate lung compliance and lung resistance and disappear with the pressure for allowing all respiratory muscle recoils to generate |
| CN106901742A (en) * | 2017-04-24 | 2017-06-30 | 广州锐士伯医疗科技有限公司 | A kind of portable respiratory function detection device with learning functionality |
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