CN113101488A

CN113101488A - Monitoring method of breathing assistance device

Info

Publication number: CN113101488A
Application number: CN202110393130.6A
Authority: CN
Inventors: 张宇骞
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-16
Filing date: 2021-04-13
Publication date: 2021-07-13
Anticipated expiration: 2041-04-13
Also published as: CN214804700U; CN113101488B; CN113040748A; CN215841030U

Abstract

The invention provides a monitoring method of a breathing assistance device, which comprises the following steps: inputting the data of a breathing reference range into a breathing early warning device; setting a breathing early warning device to enter a monitoring mode; the breathing early warning device detects the interval time between the sound waves generated by two adjacent breaths, and if the interval time of the two adjacent breaths is out of the reference range, the breathing early warning device responds and controls the alarm device to make a corresponding response. The monitoring method of the breathing assistance device is simple, convenient, stable and reliable.

Description

Monitoring method of breathing assistance device

Technical Field

The invention relates to the field of medical devices, in particular to a monitoring method of a breathing assistance device.

Background

Tracheotomy refers to cutting open the neck trachea, and put into tracheal cannula to neck trachea to relieve the medical treatment operation that the patient breathed difficulty, and in the actual treatment process, medical personnel can arrange the disease to use tracheal cannula to breathe, sputum discharging according to patient's state of an illness needs. However, the tracheal mucosa of the patient is easy to rub against the tracheal cannula when creeping, when the tracheal mucosa of the patient is rubbed by the medical tracheal cannula for a long time, repeated stimulation can be caused to the trachea of the patient, severe cough can be caused, and the physiological discomfort of the patient can be caused.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a monitoring method of a breathing assistance device, which is simple, convenient, stable and reliable.

In order to achieve the purpose, the invention adopts the following technical scheme:

a method of monitoring a breathing assistance apparatus;

the breathing assistance device comprises a breathing early warning device;

the breath early warning device comprises a shell, a breath detection device and an alarm device, wherein an air cavity, a connecting port and a vent hole are arranged in the shell, and the connecting port is communicated with the vent hole through the air cavity; the breath detection device is arranged on the shell, and the alarm device is in wired or wireless connection with the breath detection device;

the monitoring method comprises the following steps:

(1) inputting the data of a breathing reference range into a breathing early warning device;

(2) setting a breathing early warning device to enter a monitoring mode;

(3) the breath early warning device detects the interval time between sound waves generated by two adjacent breaths:

if the breath early warning device detects that the interval time of two adjacent breaths of the patient is in a reference range, the breath early warning device judges that the breath of the patient is normal, and the breath detection module continuously detects;

if the breath early warning device detects that the interval time of two adjacent breaths of the patient is higher than a reference range, the breath early warning device judges that the breath of the patient is abnormal;

and if the breathing early-warning device detects that the interval time of two adjacent breaths of the patient is lower than the reference range, the breathing early-warning device judges that the breath of the patient is abnormal.

Compared with the prior art, the use method of the breathing assistance device provided by the invention has the advantages that the breathing assistance device is used for monitoring the breathing of the wearer, so that the breathing early warning device can timely find the breathing abnormality of the wearer when the breathing abnormality occurs, and the alarm device is used for informing a nursing person to timely eliminate the dangerous case.

Preferably, in the step (3), if the breathing early warning device judges that the breathing of the patient is abnormal, the step (4) is performed;

(4) the breath early warning device enters a rechecking mode, and the interval time of multiple breaths within a detection time period T1 min is as follows:

if the breath early warning device detects that the interval time of N continuous breaths of the patient is in the reference range, returning to the step (3);

if the breathing early warning device detects that the interval time of continuous N times of breathing of the patient is higher than a reference range, the breathing early warning device judges that the patient breathes too fast, and the warning device gives an alarm;

if the breathing early warning device detects that the interval time of continuous N breaths of the patient is less than the reference range, the breathing early warning device judges that the patient breathes slowly, and the alarm device gives an alarm.

Above-mentioned mode of setting up can breathe and carry out the reinspection when the first appearance is unusual at the wearing person, and the patient is judged and is breathed and report to the police after the problem appears, on the one hand, can breathe when the patient appears unusually, report to the police so that the caregiver in time gets rid of the dangerous situation, and on the other hand, breathing auxiliary device can carry out the reinspection, avoids the patient to breathe unsmooth and trigger the warning only by accident to the condition of misreport appears in the reduction, and is simple convenient, reliable and stable.

Preferably, the breath detection device comprises a shell, a power supply module, a control module and a breath detection module, wherein the power supply module, the control module and the breath detection module are arranged in the shell, the shell is provided with an air inlet and an air outlet, the air inlet is positioned on one side of the shell facing the air cavity, and the air inlet is communicated with the outside through the air outlet;

the power supply module is used for supplying power to the control module and the breath detection module;

the breath detection module is electrically connected with the control module;

the breath detection module is arranged between the air inlet and the air outlet and used for detecting the change of air flow between the air inlet and the air outlet.

Preferably, the breath detection module is a miniature cylindrical polar microphone, and the microphone is provided with a vibration diaphragm;

the control module acquires a sound wave value generated by airflow flow by detecting the voltage change caused by the vibration of the vibrating diaphragm when the airflow changes.

Preferably, the alarm device comprises an indicator light, and the indicator light is an RGB multicolor indicator light;

in the step (4):

if the breathing early warning device detects that the sound wave value is in the reference, a green light lamp of the indicator lamp is turned on and changes along with the change of the sound wave value;

if the respiration early warning device detects that the sound wave value is higher than the reference sound wave range, a yellow light of the indicator light is turned on;

and if the breathing early warning device detects that the sound wave value is lower than the reference sound wave range, the red light of the indicator light flashes rapidly.

Above-mentioned mode of setting up enables alarm device and carries out the light suggestion, and the caregiver of being convenient for discovers that the patient breathes unusually, thereby improves breathing early warning device's alarm effect.

Preferably, the alarm device further comprises a buzzer;

in the step (4):

when the alarm device gives an alarm response, the buzzer gives a sound prompt.

The alarm device can carry out voice prompt by the arrangement mode, so that when no nursing staff is around the patient, the nursing staff located at a far distance can be reminded to pay attention to the condition of the patient through the voice prompt, even if dangerous situations are eliminated.

Preferably, the step (1) of inputting the breathing reference range data into the breathing early warning device includes the following steps:

(1.1) connecting the breathing early warning device into an external pipe with gas output, and starting and operating the breathing early warning device to enable the breathing early warning device to enter a learning mode;

(1.2) the breath detection module detects the number of times of gas outflow (exhalation) in a time period T2 min, and calculates the average interval time between every two adjacent breaths, so as to be used as a reference point of the breathing frequency.

The data of the breathing reference range is input into the breathing early warning device, so that the breathing early warning device can monitor the breathing of the patient according to the reference range.

Further, the step (1) of inputting the data of the breathing reference range into the breathing early warning device further comprises the following steps:

(1.3) finishing learning by the breathing early warning device;

(1.4) the breathing early warning device controls the warning device to give out a prompt, and the breathing early warning device enters a normal working state.

The setting mode can remind a caregiver of finishing inputting the breathing reference range data by the breathing early warning device, and breathing monitoring can be normally performed.

Preferably, in step (1.2), the time period T2 ∈ (1,3600).

Given that the longer the detection time is, the more accurate and stable the detection result relatively tends to, through setting T2 min for detecting the breathing range data, the accuracy of the breathing reference range data can be ensured.

Preferably, in step (4), the time period T1 ∈ (1,3600), N ∈ (3, 5).

The setting mode can avoid the phenomenon that the response of the breathing early warning device is caused by the accidental breathing abnormity of the patient caused by the special condition (the patient does not actually have dangerous case), so that the workload of a nursing staff is increased.

Preferably, the monitoring method further comprises the steps of:

(5) and (5) if the alarm device gives an alarm in the step (4), resetting the breathing early-warning device, and returning to the step (3).

By resetting the breathing early warning device, the warning response of the warning device can be eliminated, and the breathing early warning device enters the monitoring mode again.

Drawings

Fig. 1 is a first angular schematic view of a breathing alert device;

fig. 2 is a second angular schematic view of the breathing alert device;

FIG. 3 is an exploded view of a respiratory warning device;

FIG. 4 is a schematic bottom view of the breath detection device;

FIG. 5 is a schematic bottom view of the baffle;

FIG. 6 is a schematic view of the assembly of the breath detection device with the tracheal tube;

FIG. 7 is a cross-sectional view of the assembled respiratory detection apparatus and tracheal tube;

fig. 8 is a flowchart of the operation of the breath warning device.

Description of reference numerals:

the respiratory early warning device comprises a respiratory early warning device 1, an outer shell 11, an air cavity 12, a connector 13, an air vent 14, a convex wall 15, an opening 16, a respiratory detection device 2, a shell 21, an air inlet 22, an air outlet 23, a respiratory detection module 24, an external alarm device 3, a flow guide part 4, a mounting seat 41, a mounting groove 42, a flow guide channel 43, a flanging 44, an air treatment module 45, a cover body 5, air vents 51, a groove 52 and an air pipe sleeve 6.

Detailed Description

Embodiments of the present invention are described below with reference to the accompanying drawings:

example one

Referring to fig. 1 to 5 and 7, the breath early warning device 1 of the present embodiment includes a housing 11, a breath detection device 2 and an alarm device, wherein the housing 11 is provided with an air cavity 12, a connection port 13 and a vent 14, and the connection port 13 and the vent 14 are communicated through the air cavity 12; the breath detection device 2 is arranged on the shell 11, the breath detection device 2 is used for detecting sound waves generated by airflow flowing in the air cavity 12, and the alarm device is connected with the breath detection device 2 in a wired or wireless mode.

Specifically, the respiration detection device 2 detects the magnitude of a sound wave value generated by airflow flowing in the air cavity 12 to judge whether the patient is in an expiration state or an inspiration state, the respiration detection device 2 detects the interval of the sound wave generated by airflow flowing in the air cavity 12 to judge the interval between two adjacent breaths of the patient, and the magnitude of the sound wave value and the interval of the sound wave form a sound wave parameter; when the breath detection device 2 detects that the sound wave parameter is located outside the reference range, the breath detection device 2 sends an alarm signal to the alarm device, so that the alarm device gives an alarm response.

Referring to fig. 2, the breath early warning device 1 is disposed on the tracheal cannula 6 through the connection port 13; the two vent holes 14 are respectively arranged at the two sides of the shell 11, and the arrangement mode can avoid that air directly enters from the front surface of the invention too fast to cause discomfort of a patient.

Referring to fig. 4 and 7, the breath detection device 2 includes a housing 21, a power supply module (not shown), a control module (not shown), and a breath detection module 24, where the power supply module, the control module, and the breath detection module 24 are disposed in the housing 21, the housing 21 is provided with an air inlet 22 and an air outlet 23, the air inlet 22 is located on one side of the housing 21 facing the air cavity 12, and the air inlet 22 is communicated with the outside through the air outlet 23; the power supply module is used for supplying power to the control module and the breath detection module 24; the breath detection module 24 is electrically connected with the control module; the breath detection module 24 is disposed between the air inlet 22 and the air outlet 23, and is configured to detect a change in air flow between the air inlet 22 and the air outlet 23. The control module can perform data optimization processing on the sound part data, wherein the involved algorithm belongs to the application of the conventional technology.

The respiration detection device 2 further comprises a reset module (not shown in the figure), the reset module is electrically connected with the control module, and the reset module is used for resetting the control module so that the control module stops sending an alarm signal to the alarm device; after the alarm module gives an alarm response or is triggered by mistake, the respiration detection device 2 is reset through the reset module, so that the alarm module can be stopped to continue alarming, and the operation difficulty of personnel is reduced.

The respiration detection device 2 is simple in structure and few in parts, so that the structure can be designed to be more compact, the whole volume is smaller, the device is convenient to mount on the shell 11, the weight of the device is reduced, and the load of a patient wearing the device is reduced.

Referring to fig. 7, the breath detection module 24 is a micro-column polar microphone, and the microphone is provided with a vibrating diaphragm; the control module acquires a sound wave value generated by airflow flow by detecting the voltage change caused by the vibration of the vibrating diaphragm when the airflow changes.

The working principle of the miniature electret microphone is as follows: the key element of the sound-electricity conversion is an electret vibrating diaphragm, which takes an extremely thin plastic diaphragm as a substrate, wherein one surface of the extremely thin plastic diaphragm is evaporated with a layer of pure metal film, and after the treatment of high-voltage electric field electret, opposite charges which can be kept for a long time, namely electret (also called permanent charge body), are formed on the two surfaces; when sound waves cause the electret film to vibrate to generate displacement, the distance between two polar plates of the capacitor is changed, so that the capacity of the capacitor is changed, and the charge number on the electret is always constant and is equal to CU according to a formula Q, so that the voltage U at two ends of the capacitor is inevitably changed when C is changed, an electric signal is output, and the sound-electricity conversion is realized; the total charge of the electret is constant, and when the polar plate retreats under the pressure of sound waves, the capacitance is reduced, the voltage between two electrodes of the capacitor is increased in an inverse proportion, and conversely, when the capacitance is increased, the voltage between two electrodes of the capacitor is reduced in an inverse proportion. The miniature electret microphone is an application of prior art devices and will not be described in detail here.

Carbon dioxide concentration monitoring, flow sensing monitoring, wind speed sensing monitoring, pressure difference sensing monitoring: (1) the monitoring of the carbon dioxide concentration is usually used in a closed air passage, and for an open air passage, the monitoring is easily influenced by the external carbon dioxide concentration, so that the detection result is inaccurate; (2) the structural size of the device adopted for flow sensing monitoring and wind speed sensing monitoring is larger, so that the load of a patient is larger; (3) the device adopted by the pressure difference sensing monitoring needs to block an air pipe to generate pressure difference, and is not sensitive enough to the pressure of gas generated by breathing; therefore, the miniature electret microphone has more advantages than carbon dioxide concentration monitoring, flow sensing monitoring, wind speed sensing monitoring and pressure difference sensing monitoring.

The miniature pole body microphone is small in size, high in sound wave recognition rate and capable of effectively monitoring relatively weak sound waves generated by gentle airflow of a patient in sleep at night, and meanwhile, the miniature pole body microphone is light in weight and convenient to carry, and weight borne by the neck of the patient is favorably reduced. The miniature electret microphone belongs to a high-sensitivity directional sound wave pickup module, adopts a high-sensitivity directional sound wave technology, and obtains a flowing waveform of gas when a patient breathes under the combined action of a vibrating diaphragm and a coil (sound wave pressure collection and current signal conversion), so that different breathing states can be accurately obtained, and different breathing states are correspondingly obtained, thereby realizing real-time monitoring on the breathing state of the patient.

The alarm device comprises an alarm element (not shown in the figure) arranged in the breath detection device 2, and the alarm element is electrically connected with the control module and the power supply module.

The alarm element is an acousto-optic alarm element and comprises an indicator light and a buzzer, and the indicator light is an RGB multicolor indicator light; when the alarm element gives an alarm response, the indicator lamp gives a light prompt, and the buzzer gives a sound prompt.

When the respiration detection module 24 detects that the sound wave value is in the reference sound wave range, the green light of the indicator light is turned on and changes along with the change of the sound wave value; when the respiration detection module 24 detects that the sound wave value is higher than the reference sound wave range, a yellow light of the indicator light is turned on; when the respiration detection module 24 detects that the sound wave value is lower than the reference sound wave range, the red light of the indicator light flashes rapidly.

The reference acoustic wave range of the present embodiment is a data range formed by measuring the acoustic wave value of the respiration detection module 24 in the case where air does not flow, the acoustic wave value of the respiration detection module 24 in the case where air flows in due to patient inhalation, and the acoustic wave value of the respiration detection module 24 in the case where air flows out due to patient exhalation.

Referring to fig. 1 to 2, the alarm device further comprises an external alarm device 3, and the external alarm device 3 can respond to the alarm module at the same time; the external alarm device 3 is an application of a prior art device and is not described in detail herein.

The alarm device is set as the external alarm device 3, so that a caregiver can conveniently carry the external alarm device 3, and the caregiver can timely find and remove dangerous situations when the patient is abnormally breathed or blocked.

Referring to fig. 3, the housing 11 is a hollow structure, an opening 16 is formed in one side of the housing 11, the opening 16, the connection port 13 and the ventilation hole 14 are communicated with each other, and the breath detection device 2 is disposed on the opening 16.

Specifically, the opening 16 is disposed at the upper portion of the housing 11, so as to ensure that the breathing early-warning device 1 detects gas along the ascending direction of the gas flow.

By providing the opening 16, the breath detection device 2 is conveniently arranged on the housing 11, and the assembly difficulty of the invention is reduced.

Referring to fig. 3 and 5, the opening 16 is provided with a flow guide 4, and the flow guide 4 is used for guiding the air flow in the air cavity 12 to the air inlet 22.

Referring to fig. 3 and 5, specifically, the flow guide element 4 includes an installation seat 41 and a flow guide channel 43, the installation seat 41 is detachably disposed on the opening 16, a flange 44 is disposed on an upper portion of the installation seat 41, the flange 44 abuts against the opening 16, an installation groove 42 is disposed in a middle portion of the installation seat 41, the breathing early warning device is disposed in the installation groove 42, and a position of the installation groove 42 corresponding to the air inlet 22 extends toward the connection port 13 to form the flow guide channel 43.

When the patient exhales, gas flows in from the connecting port 13, part of the gas is guided to the breathing early warning device 1 through the flow guide part 4, and the gas rotates in the inner cavity of the breathing early warning device 1 and collides to make a sound, so that the sensitivity of the breathing detection module 24 is effectively enhanced.

Because the tracheal cannula 6 is directly communicated with the outside, the inhaled air can not be filtered, heated and humidified like the nasal cavity of human, so that the air entering the tracheal cannula 6 has larger irritation, and foreign matters such as dust, bacteria and the like can increase the infection incidence rate after easily entering the trachea. Referring to fig. 3, in order to solve the above problem, an air treatment module 45 is disposed in the ventilation hole 14.

By providing the air treatment module 45 in the air vent 14, the gas flowing into the connection port 13 can be treated with air, and the irritation of the gas to the patient can be reduced.

As an improved scheme: the air treatment module is disposed in the air chamber, and although the drawing of this embodiment does not show a schematic view of the improvement, the improvement still falls within the protection scope of the present invention.

In particular, the air treatment module 45 is used for filtering the air entering the air chamber 12 and for humidity and temperature regulation of the air.

By filtering the air, pollutants and germs can be prevented from entering the body of a patient along with the airflow, in addition, the air humidification mainly aims at maintaining the normal physiological condition of the lower respiratory tract, and the proper heating and humidification are beneficial to ensuring the normal function of a mucous cilia transfer system; the air treatment module 45 has the functions of heat preservation and humidification on air, can simulate the function of the upper respiratory tract of a human body, imitate the heating and humidification of the nasal cavity, and obstruct dust and bacteria to reduce infection and compensate partial physiological functions

The air treatment module 45 comprises filter cotton.

The air-permeable antibacterial filter cotton can simulate the physiological function of human respiratory tract, and filters dust, bacteria, microorganisms and other particles: larger particles are intercepted as they pass through the membrane because they are too large in diameter; the small particles can have certain kinetic energy under the drive of the airflow, and move linearly under the influence of inertia to impact a filter membrane to be intercepted; small particles of bacteria, viruses and the like can be partially intercepted by the filter membrane due to irregular Brownian motion.

Further, the filter cotton is lithium chloride sponge.

Lithium chloride sponge has the effect of combining chemical water and heat-retaining, and when human body expired gas was cotton through ventilative fungi-proofing gas filtration, heat and moisture were kept the gas of warming, humidifying incoming call, and moisture content and heat in the expired gas can partly circulate and inhale to reduce the respiratory tract and lose water and carry out suitable heating to the gas of inhaling, realize following technological effect: (1) the temperature and the humidity of the gas entering the lung are close to the level of the exhaled gas, so that the metabolism and the damage of airway mucous membranes are reduced, and the generation and the infection probability of sputum are reduced; (2) the breathing gas can be warmed and humidified under the condition that other devices are not needed to actively humidify and heat, so that the portability of the developed external pipe fitting is greatly improved; (3) air is effectively filtered, the passing of bacteria is reduced, and the infection incidence is reduced; (4) the hydrophobic lithium chloride sponge has high bacterial filtration efficiency, can be replaced once in 5 days at most, can reduce burden of nursing work and reduce economic burden of patients; (5) the hydrophobic lithium chloride sponge has certain waterproofness, enriches the scene that the patient uses the external pipe fitting (tracheal cannula 6), and greatly improves the life quality of the patient.

The air treatment module 45 also comprises a number of layers of gauze (not shown in the figures), which are made of a water-absorbing material.

Because the net is provided with the micro holes, heat and moisture in the exhaled air can be collected and stored, when the air passes through the air treatment module 45 during air inhalation, the heat and moisture are brought into the air cavity 12, effective and proper humidification in the air cavity 12 is ensured, and meanwhile, a certain filtering effect on bacteria is achieved.

The filter pulp can be dismantled through the cover body 5 and set up on air vent 14, be equipped with bleeder vent 51 on the cover body 5, it is right when clearing up outside pipe fitting that above-mentioned mode of setting can be convenient for the filter pulp carries out quick replacement.

Referring to fig. 3, a circle of convex wall 15 is formed by extending the inside of the vent hole 14 outwards, and a groove 52 matched with the convex wall 15 is formed on one side of the cover body 5 facing the vent hole 14; this arrangement facilitates removal of the housing 5 for replacement of the filter cotton; in this embodiment, the air treatment module 45 is disposed within the recess 52.

As an improved scheme: although the drawing of the embodiment does not show the schematic diagram of the improved scheme, the improved method still belongs to the protection scope of the invention.

The power supply module is a storage battery; an AP1230 voltage stabilization chip (not shown in the figure) is disposed on the power supply module; the voltage stabilizing chip can provide stable 3.3V voltage for a subsequent circuit to use, and filter capacitors are added on the input and output sides of the voltage stabilizing chip to enhance the stability of a power supply; the power supply module is provided with a power supply terminal which is used for connecting an external power supply.

Compared with the prior art, the breathing early warning device 1 can monitor the breathing condition of a patient, give an alarm when the patient breathes abnormally or is blocked, and remind the patient and family members of eliminating dangerous cases in time; the help patient sends distress signal under emergency condition, lets the patient that loses voice and unmanned patient obtain the rescue in the very first time.

Example two

Referring to fig. 6 to 7, another object of the present invention is to provide a breathing assistance device using the above breathing early warning device 1, which includes a tracheal cannula 6 and the breathing early warning device 1, wherein the breathing early warning device 1 is disposed on an outer end of the tracheal cannula 6.

Compared with the prior art, the breathing auxiliary device is suitable for patients with dyspnea, is provided with the breathing early warning device 1, can monitor the breathing condition of the patients in real time, and triggers an alarm when the patients have dyspnea so as to remind nursing staff to process in time and avoid dangerous situations.

EXAMPLE III

Referring to fig. 8, another object of the present invention is to provide a method for using the breathing assistance device, comprising the following steps:

(2) setting a breathing early warning device to enter a monitoring mode;

if the breath early warning device detects that the interval time of two adjacent breaths of the patient is higher than the reference range, entering the step (4);

if the breath early warning device detects that the interval time of two adjacent breaths of the patient is lower than the reference range, entering the step (4);

In the step (1), the method for recording the breathing reference range data into the breathing early warning device comprises the following steps:

(1.2) the breath detection module detects the number of times of gas outflow (expiration) in a time period T2 min, and calculates the average interval time between every two adjacent breaths, so as to be used as a reference point of the breathing frequency;

(1.3) finishing learning by the breathing early warning device;

(1.4) the breathing early warning device controls the warning device to give out a prompt, and the breathing early warning device enters a normal working state;

(1.5) testing the breathing early warning device by using an external pipe fitting with gas output and preset gas flow speed, checking the test result of the breathing early warning device, judging that the breathing early warning device can normally work if the test result is accurate, and returning to the step (1.1) to recalibrate the breathing early warning device if the test result is accurate.

Wherein, the step (1.5) can ensure that the breath early warning device is used for the patient after being in a normal working state.

In the step (1), reference sound wave range data is recorded into the breathing early warning device, and the method comprises the following steps:

and measuring a data range formed by the sound wave value of the respiration early warning device under the condition that air does not flow, the sound wave value of the respiration early warning device under the condition that air flows in due to inspiration of a patient and the sound wave value of the respiration early warning device under the condition that air flows out due to expiration of the patient. Specifically, the maximum sound wave value generated under the condition that the air flows in due to the inspiration of the patient is the maximum threshold value of the sound wave in the inspiration phase; the maximum sound wave value generated under the condition that the air flows out due to the expiration of the patient is the maximum threshold value of the sound wave in the expiration stage; the sound wave value of the breathing early warning device under the condition that air does not flow is the minimum threshold value of the sound wave in the inspiration phase and the maximum threshold value of the sound wave in the expiration phase.

In this embodiment, the external pipe fitting that has gaseous output is tracheal cannula, through with breathe early warning device setting on the patient tracheal cannula of wearing, the breathing condition of direct detection patient is in order to form breathing benchmark range data and benchmark acoustic wave range data. The frequency of the uniform respiration of a normal person is known to be 12-20 times/minute, and the respiration reference range can be set according to the frequency.

In step (1.2), the time period T2 ∈ (1,3600).

In the step (4), the time period T1 is within the range of (1,3600) and N is within the range of (3, 5).

The monitoring method further comprises the following steps:

The embodiment provides an optimal scheme, and in practical application, the following simplified scheme also exists:

in the step (3), if the breathing early-warning device detects that the interval time between two adjacent breaths of the patient is higher than or lower than the reference range, the breathing early-warning device judges that the breath of the patient is abnormal, and the alarm device gives an alarm.

Variations and modifications to the above-described embodiments may occur to those skilled in the art, which fall within the scope and spirit of the above description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims

1. A method of monitoring a breathing assistance apparatus;

the breathing assistance device comprises a breathing early warning device;

the monitoring method comprises the following steps:

(2) setting a breathing early warning device to enter a monitoring mode;

2. The monitoring method of the breathing assistance device according to claim 1, wherein in the step (3), if the breathing early warning device judges that the patient breathes abnormally, the monitoring method enters the step (4);

3. The monitoring method of the breathing assistance device according to any one of claims 1 to 2, wherein the breathing detection device comprises a housing, a power supply module, a control module and a breathing detection module, the power supply module, the control module and the breathing detection module are arranged in the housing, the housing is provided with an air inlet and an air outlet, the air inlet is positioned on one side of the housing facing the air cavity, and the air inlet is communicated with the outside through the air outlet;

the breath detection module is electrically connected with the control module;

4. The monitoring method of the respiratory assistance device according to claim 3, wherein the respiration detection module is a micro-column polar microphone, and the microphone is provided with a vibrating diaphragm;

5. A method of monitoring a breathing assistance apparatus as claimed in claim 2 wherein said alarm means includes an indicator light, said indicator light being an RGB multicolour indicator light;

in the step (4):

6. A method for monitoring a breathing assistance apparatus according to any one of claims 1 to 2, wherein the step (1) of entering breathing reference range data into the breathing early warning apparatus comprises the following steps:

7. The monitoring method of the breathing assistance device according to claim 6, wherein the step (1) of entering the breathing reference range data into the breathing early warning device further comprises the following steps:

(1.3) finishing learning by the breathing early warning device;

8. A method of monitoring a breathing assistance apparatus as claimed in claim 6 wherein in step (1.2) the time period T2 e (1,3600).

9. A method of monitoring a breathing assistance apparatus according to claim 2 characterised in that in step (4) the time period T1 e (1,3600), N e (3, 5).

10. A method of monitoring a breathing assistance apparatus as claimed in claim 2 further comprising the steps of: