CN109621121B - Detection method and detection system for mechanical control ventilation state - Google Patents
Detection method and detection system for mechanical control ventilation state Download PDFInfo
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- CN109621121B CN109621121B CN201811633024.5A CN201811633024A CN109621121B CN 109621121 B CN109621121 B CN 109621121B CN 201811633024 A CN201811633024 A CN 201811633024A CN 109621121 B CN109621121 B CN 109621121B
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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
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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
- A61M16/022—Control means therefor
- A61M16/024—Control means therefor including calculation means, e.g. using a processor
Abstract
The invention discloses a detection method and a detection system for a machine-controlled ventilation state, wherein the detection method comprises the following steps: acquiring carbon dioxide amount data of at least a preset number of respiratory cycles in a ventilation pipeline between a machine and a user in the process of ventilating the machine for the user; judging whether an expiration platform and an inspiration platform exist according to the carbon dioxide amount data; and judging whether the ventilation between the machine and the user is normal and effective according to the existence of the exhalation platform and the inhalation platform. The invention has the following advantages: during the process that the machine ventilates for the user, whether the machine-controlled ventilation is normal and effective can be quickly and effectively judged according to the carbon dioxide amount data in the ventilation pipeline between the machine and the user.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to a detection method and a detection system for a machine-controlled ventilation state.
Background
During the ventilation of a patient by a machine, it is necessary to monitor whether the ventilation between the machine and the patient is effective. However, there is no effective way to monitor whether ventilation between the machine and the patient is effective.
Disclosure of Invention
The present invention is directed to solving at least one of the above problems.
Therefore, an object of the present invention is to provide a method for detecting a state of mechanical ventilation, which can determine the normal effectiveness of mechanical ventilation when using a machine.
In order to achieve the purpose, the embodiment of the invention discloses a method for detecting a machine-controlled ventilation state, which comprises the following steps: acquiring carbon dioxide amount data of at least a preset number of respiratory cycles in a ventilation pipeline between a machine and a user during ventilation of the machine for the user; judging whether an expiration platform and an inspiration platform exist according to the carbon dioxide amount data; and judging whether the ventilation between the machine and the user is normal and effective according to the existence of an expiration platform and an inspiration platform.
According to the method for detecting the mechanical control ventilation state, whether mechanical control ventilation is normal and effective or not can be judged quickly and effectively according to the real-time acquisition of carbon dioxide amount data in the ventilation pipeline between the machine and the user in the process that the machine ventilates for the user.
In addition, the method for detecting the mechanical control ventilation state according to the above embodiment of the present invention may further have the following additional technical features:
optionally, the step of analyzing whether an exhalation plateau and an inhalation plateau are present from the capnography data comprises: and if the carbon dioxide amount in the carbon dioxide amount data is changed periodically and the difference of the carbon dioxide values at corresponding moments in adjacent periods meets the preset difference, judging the expiration platform and the inspiration platform.
Optionally, the step of determining whether ventilation between the machine and the user is normally effective in dependence on the presence of an exhalation plateau and an inhalation plateau comprises: determining that ventilation between the machine and the user is normally effective if both an exhalation plateau and an inhalation plateau are present within one breath cycle.
Optionally, the method further comprises: determining that ventilation between the machine and the user is ineffective if a change in the value of carbon dioxide within a preset time of the presence of the carbon dioxide amount data does not satisfy the change criterion of the value of carbon dioxide; wherein the preset time is greater than the duration of one breathing cycle.
Optionally, the method further comprises: generating a waveform of the carbon dioxide value changing along with the acquisition time according to the carbon dioxide data; and displaying the waveform of the carbon dioxide value changing along with the acquisition time.
Optionally, after the step of determining whether ventilation between the machine and the user is normal according to the presence of an exhalation platform and an inhalation platform, the method further comprises: a result of prompting whether ventilation between the machine and the user is normally effective.
Therefore, two objectives of the present invention are to provide a system for detecting the condition of mechanical ventilation, which can determine the normal effectiveness of mechanical ventilation when using the machine.
In order to achieve the above object, an embodiment of the present invention discloses a system for detecting a mechanical ventilation status, including: the data acquisition module is used for acquiring carbon dioxide amount data of at least a preset number of respiratory cycles in a ventilation pipeline between a machine and a user in the process that the machine ventilates for the user; and the detection judging module is used for judging whether an expiration platform and an inspiration platform exist according to the carbon dioxide amount data, and further judging whether ventilation between the machine and the user is normal and effective according to whether the expiration platform and the inspiration platform exist.
According to the detection system of the machine-controlled ventilation state, whether the machine-controlled ventilation is normal and effective can be judged quickly and effectively according to the real-time acquisition of the carbon dioxide amount data in the ventilation pipeline between the machine and the user in the process of ventilation of the machine for the user.
In addition, the detection system for the mechanical control ventilation state according to the above embodiment of the present invention may further have the following additional technical features:
optionally, the detection and determination module is specifically configured to determine an exhalation platform and an inhalation platform if the amount of carbon dioxide in the carbon dioxide amount data is periodically changed and the difference between carbon dioxide values at corresponding times in adjacent periods meets a preset difference.
Optionally, the detection and determination module is further configured to determine that ventilation between the machine and the user is normal and effective if an exhalation platform and an inhalation platform are present simultaneously within one breathing cycle.
Optionally, the detection judging module is further configured to determine that ventilation between the machine and the user is invalid if the change in the carbon dioxide value within the preset time of the carbon dioxide amount data does not satisfy the change criterion of the carbon dioxide value; wherein the preset time is greater than the duration of one breathing cycle.
Optionally, the detection system for the ventilatory control condition further comprises: the waveform generation module is used for generating a waveform of the carbon dioxide value changing along with the acquisition time according to the carbon dioxide data; and the display module is used for displaying the waveform of the carbon dioxide value changing along with the acquisition time.
Optionally, the detection system for the ventilatory control condition further comprises: and the prompting module is used for prompting the result whether the ventilation between the machine and the user is normal and effective.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a flow chart of a method for detecting a ventilatory status of a machine in accordance with one embodiment of the invention;
fig. 2 is a block diagram of a system for detecting a ventilatory status of a robot according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
These and other aspects of embodiments of the invention will be apparent with reference to the following description and attached drawings. In the description and drawings, particular embodiments of the invention have been disclosed in detail as being indicative of some of the ways in which the principles of the embodiments of the invention may be practiced, but it is understood that the scope of the embodiments of the invention is not limited correspondingly. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.
The detection method and the detection system for the mechanical control ventilation state of the invention are described below with reference to the accompanying drawings.
Fig. 1 is a flow chart of a method for detecting a ventilatory status of a machine in accordance with one embodiment of the present invention. As shown in fig. 1, the method for detecting a mechanical ventilation state according to an embodiment of the present invention includes the following steps:
s1: during the ventilation of a user by the machine, carbon dioxide data is acquired for at least a preset number of respiratory cycles in a ventilation circuit between the machine and the user.
In particular, a carbon dioxide sensor is provided on the air duct between the machine and the user, so as to acquire carbon dioxide amount data in the air duct between the machine and the user by means of the carbon dioxide sensor. The carbon dioxide value can be collected in real time or at preset intervals, and specifically, the interval time magnitude is millisecond, decisecond and second. Since the subsequent step requires the determination of the effectiveness of the ventilatory control based on the carbon dioxide data, it is necessary to collect in real time the carbon dioxide data for at least a preset number of respiratory cycles in step S1. In some examples, the preset number is up to ten, or dozens, tens, or even hundreds.
Illustratively, the machines in embodiments of the present invention may be ventilators, anesthesia machines, and other machines with respiratory support functions.
S2: and judging whether an expiration platform and an inspiration platform exist according to the carbon dioxide amount data.
Because the user exhales a greater amount of carbon dioxide than inhales during a breathing cycle. In the case of a normal ventilatory control, the carbon dioxide value corresponding to the exhalation of the user will be greater than the carbon dioxide value corresponding to the inhalation of the user and will appear at the exhalation and inhalation levels.
In one embodiment of the present invention, step S2 includes: and if the carbon dioxide amount in the carbon dioxide amount data is changed periodically and the difference of the carbon dioxide values at corresponding moments in adjacent periods meets the preset difference, the breathing of the user is stable, and then the exhalation platform and the inhalation platform are judged.
In another embodiment of the present invention, the respiratory platform data is considered to be present if there is a difference in the carbon dioxide amount data between every two consecutive predetermined number of carbon dioxide acquisitions that is less than the first predetermined difference. And if at least two sections of platform data exist in the breathing platform data and the difference value of the average value of the carbon dioxide values in the at least two sections of platform data exceeds a second preset difference value, determining that an expiration platform and an inspiration platform exist.
S3: and judging whether the ventilation between the machine and the user is normal and effective according to the existence of the exhalation platform and the inhalation platform.
In one embodiment of the present invention, step S3 includes: if both an exhalation and an inhalation platform are present within a breathing cycle, it is determined that ventilation between the machine and the user is normal and effective.
In an embodiment of the present invention, the method for detecting the mechanical ventilation state further comprises: and if the change of the carbon dioxide value within the preset time of the carbon dioxide amount data does not meet the change standard of the carbon dioxide value, determining that the ventilation between the machine and the user is invalid. Wherein the preset time is longer than the duration of one breathing cycle. That is, if the carbon dioxide value collected by the sensor does not change significantly during more than one respiratory cycle, it may indicate that the ventilation between the machine and the user is not effective, and it may indicate that the catheter is not inserted between the machine and the user, and it may be prompted (to the medical staff).
In an embodiment of the present invention, the method for detecting the mechanical ventilation state further comprises: generating a waveform of the carbon dioxide value changing along with the acquisition time according to the carbon dioxide data; and displaying the waveform of the carbon dioxide value along with the change of the acquisition time.
Specifically, the waveform that carbon dioxide volume along with time variation was generated according to the carbon dioxide data that the sensor gathered by waveform generation software to can show this waveform through the display, so that medical personnel can judge whether normal effective ventilating between machine and the user according to this waveform, play medical personnel and carry out supplementary effect, guarantee that the judged result is more accurate. In some examples, if the waveform of the amount of carbon dioxide over time tends to a straight line, it indicates that ventilation between the machine and the user is not effective; ventilation between the machine and the user is normally effective if the waveform of the amount of carbon dioxide over time is periodic and there is an exhalation plateau and an inhalation plateau in each cycle.
In another embodiment of the present invention, after step S3, the method further includes: s4: the machine is prompted as a result of whether the ventilation of the user is normal and effective, so that medical staff can eliminate the fault in time when the ventilation is invalid or abnormal under mechanical control. The method for removing the fault may include: reconnecting the breathing conduit to the user; checking the air tightness of the breathing conduit and replacing the breathing conduit when the air tightness of the breathing conduit is unqualified; checking whether the sensor is normal and replacing the sensor when the air tightness of the breathing conduit is abnormal.
Fig. 2 is a block diagram of a system for detecting a ventilatory status of a robot according to an embodiment of the present invention. As shown in fig. 2, in an embodiment of the present invention, a system for detecting a ventilatory condition in a mechanical control system includes a data acquisition module 100 and a detection judgment module 200.
The data acquiring module 100 is configured to acquire carbon dioxide data of at least a preset number of respiratory cycles in a ventilation circuit between a machine and a user during ventilation of the user by the machine. The waveform forming module 200 is configured to generate a waveform with a carbon dioxide amount varying with time according to the end-tidal carbon dioxide data and the inhaled carbon dioxide data of at least a preset number of respiratory cycles of the user, which are acquired in real time. The detection and judgment module 300 is used for judging whether an exhalation platform and an inhalation platform exist according to the carbon dioxide amount data, and further judging whether ventilation between the machine and a user is normal and effective according to whether the exhalation platform and the inhalation platform exist.
According to the detection system of the machine-controlled ventilation state, whether the machine-controlled ventilation is normal and effective can be judged quickly and effectively according to the real-time acquisition of the carbon dioxide amount data in the ventilation pipeline between the machine and the user in the process of ventilation of the machine for the user.
In an embodiment of the present invention, the detection and determination module 200 is specifically configured to determine the exhalation platform and the inhalation platform if the amount of carbon dioxide in the carbon dioxide amount data is periodically changed and the difference between carbon dioxide values at corresponding times in adjacent periods satisfies a preset difference.
In one embodiment of the present invention, the detection and determination module 200 is further configured to determine that ventilation between the machine and the user is normal and effective if both an exhalation platform and an inhalation platform are present within a single breath cycle.
In an embodiment of the present invention, the detection and determination module 200 is further configured to determine that ventilation between the machine and the user is invalid if a change in the carbon dioxide value within the preset time of the presence of the carbon dioxide amount data does not satisfy a change criterion of the carbon dioxide value. Wherein the preset time is longer than the duration of one breathing cycle.
In one embodiment of the present invention, the system for detecting a ventilatory condition controlled by a machine further comprises: the waveform generation module is used for generating a waveform of the carbon dioxide value changing along with the acquisition time according to the carbon dioxide data; and the display module is used for displaying the waveform of the carbon dioxide value changing along with the acquisition time.
In an embodiment of the present invention, optionally, the detection system for the ventilatory control condition further comprises: and the prompting module is used for prompting whether the ventilation between the machine and the user is normal and effective.
In one embodiment of the invention, the detection system for the mechanically controlled ventilation state further comprises a prompt module. The prompting module is used for prompting the machine to obtain a result of whether the ventilation of the user is normal and effective.
It should be noted that the specific implementation of the system for detecting a mechanical ventilation state in the embodiment of the present invention is similar to the specific implementation of the method for detecting a mechanical ventilation state in the embodiment of the present invention, and specific reference is made to the description of the method for detecting a mechanical ventilation state, and details are not repeated for reducing redundancy.
In addition, other configurations and functions of the detection system for mechanical control ventilation state according to the embodiment of the present invention are known to those skilled in the art, and are not described in detail for reducing redundancy.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (9)
1. A method for detecting a machine-controlled ventilation state is characterized by comprising the following steps:
acquiring carbon dioxide amount data of at least a preset number of respiratory cycles in a ventilation pipeline between a machine and a user during ventilation of the machine for the user;
judging whether an expiration platform and an inspiration platform exist according to the carbon dioxide amount data;
judging whether ventilation between the machine and the user is normal and effective according to the existence of an expiration platform and an inspiration platform; wherein
The detection and judgment module is specifically used for judging an expiration platform and an inspiration platform if the carbon dioxide amount in the carbon dioxide amount data is in periodic variation and the difference of the carbon dioxide values at corresponding moments in adjacent periods meets a preset difference, and considering that the respiration platform data exists if the difference between every two continuous preset carbon dioxide acquisition values in the carbon dioxide amount data is smaller than a first preset difference, and considering that the expiration platform and the inspiration platform exist if the difference of the average values of the carbon dioxide values of at least two sections of respiration platform data in the respiration platform data exceeds a second preset difference.
2. The method for detecting ventilatory status controlled by a machine according to claim 1, wherein the step of determining whether there is an expiratory plateau or an inspiratory plateau based on the capnography data comprises:
and if the carbon dioxide amount in the carbon dioxide amount data is changed periodically and the difference of the carbon dioxide values at corresponding moments in adjacent periods meets the preset difference, judging the expiration platform and the inspiration platform.
3. The method of detecting a ventilatory condition controlled by a machine of claim 2, wherein the step of determining whether ventilation between the machine and the user is normally effective based on the presence of an exhalation plateau and an inhalation plateau comprises:
determining that ventilation between the machine and the user is normally effective if both an exhalation plateau and an inhalation plateau are present within one breath cycle.
4. The method for detecting the ventilatory control state of claim 3, further comprising:
determining that ventilation between the machine and the user is ineffective if a change in the value of carbon dioxide within a preset time of the presence of the carbon dioxide amount data does not satisfy the change criterion of the value of carbon dioxide;
wherein the preset time is greater than the duration of one breathing cycle.
5. The method for detecting the ventilatory control state of claim 1, further comprising:
generating a waveform of the carbon dioxide value changing along with the acquisition time according to the carbon dioxide data;
and displaying the waveform of the carbon dioxide value changing along with the acquisition time.
6. The method of detecting ventilatory status controlled by a machine of claim 1, further comprising, after the step of determining whether ventilation between the machine and the user is normal based on the presence of an exhalation plateau and an inhalation plateau:
a result of prompting whether ventilation between the machine and the user is normally effective.
7. A system for detecting a machine-controlled ventilation condition, comprising:
the data acquisition module is used for acquiring carbon dioxide amount data of at least a preset number of respiratory cycles in a ventilation pipeline between a machine and a user in the process that the machine ventilates for the user;
the detection judging module is used for judging whether an expiration platform and an inspiration platform exist according to the carbon dioxide amount data, and further judging whether ventilation between the machine and the user is normal and effective according to whether the expiration platform and the inspiration platform exist; wherein
The detection and judgment module is specifically used for judging an expiration platform and an inspiration platform if the carbon dioxide amount in the carbon dioxide amount data is in periodic variation and the difference of carbon dioxide values at corresponding moments in adjacent periods meets a preset difference, and judging that the expiration platform and the inspiration platform exist if the difference between every two continuous preset carbon dioxide acquisition values in the carbon dioxide amount data is smaller than a first preset difference, and judging that the respiration platform data exists and the difference of the average value of the carbon dioxide values of at least two sections of respiration platform data in the respiration platform data exceeds a second preset difference.
8. The system for detecting the ventilatory status of a machine of claim 7, wherein the detection module is further configured to determine that the ventilation between the machine and the user is normally effective if both an exhalation plateau and an inhalation plateau exist within a single breath cycle.
9. The system for detecting the ventilatory status of a machine of claim 8, wherein the detection module is further configured to determine that the ventilatory status between the machine and the user is invalid if the change in the carbon dioxide value within the preset time of the carbon dioxide amount data does not satisfy the change criterion of the carbon dioxide value; wherein the preset time is greater than the duration of one breathing cycle.
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| US20120272962A1 (en) * | 2011-04-29 | 2012-11-01 | Nellcor Puritan Bennett Llc | Methods and systems for managing a ventilator patient with a capnometer |
| WO2016108121A1 (en) * | 2014-12-31 | 2016-07-07 | Koninklijke Philips N.V. | System for performing histogram analysis of the time-based capnography signals and method of operation thereof |
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| US6179784B1 (en) * | 1997-11-03 | 2001-01-30 | Ntc Technology Inc. | Respiratory profile parameter determination method and apparatus |
| CN102202573A (en) * | 2008-11-07 | 2011-09-28 | 皇家飞利浦电子股份有限公司 | Carbon dioxide monitoring system |
| CN103402426A (en) * | 2011-02-22 | 2013-11-20 | 皇家飞利浦有限公司 | Capnography system for automatic diagnosis of patient condition |
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