CN113101488B

CN113101488B - Monitoring method of breathing assistance device

Info

Publication number: CN113101488B
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: 2023-04-28
Anticipated expiration: 2041-04-13
Also published as: CN113040748A; CN113101488A; CN215841030U; CN214804700U

Abstract

The invention provides a monitoring method of a breathing auxiliary device, which comprises the following steps: inputting respiration reference range data to a respiration early warning device; setting a respiration early warning device to enter a monitoring mode; the breath early-warning device detects the interval time between sound waves generated by two adjacent breaths, and if the interval time of the two adjacent breaths is outside the reference range, the breath early-warning device responds and controls the alarm device to respond correspondingly. The monitoring method of the breathing auxiliary 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 auxiliary device.

Background

Tracheotomy is to cut open the cervical trachea and put into the tracheal cannula to the cervical trachea, in order to relieve the medical operation of patient's dyspnea, in the actual treatment process, medical personnel can be according to patient's state of an illness needs, arranges that the patient uses tracheal cannula to breathe, sputum excretion. But easily rub with the tracheal cannula when patient's tracheal mucosa peristalsis, rub patient's tracheal mucosa when medical tracheal cannula for a long time, can cause the repeated stimulation to patient's trachea, cause violent cough, lead to patient's physiology uncomfortable, in addition, when patient's secretion or pollutant stop up the tracheal cannula, because patient promptly suffocates and do not have the early warning, lead to falling asleep stage or the postoperative patient who loses the sound production function leads to serious consequence because of can not promptly asking for help, consequently, need design a breathing monitoring method that is adapted to tracheal cannula.

Disclosure of Invention

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

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

a method of monitoring a respiratory assistance device;

the breathing auxiliary device comprises a breathing early warning device;

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

the monitoring method comprises the following steps:

(1) Inputting respiration reference range data to a respiration early warning device;

(2) Setting a respiration 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 respiration early-warning device detects that the interval time between two adjacent breaths of the patient is in the reference range, the respiration early-warning device judges that the breath of the patient is normal, and the respiration detection module continuously detects the breath;

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

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

Compared with the prior art, the using method of the breathing auxiliary device monitors the breathing of the wearer by using the breathing auxiliary device, so that the breathing of the wearer can be timely found out through the breathing early-warning device when the breathing of the wearer is abnormal, and a caretaker is informed of timely eliminating dangerous cases through the alarming device.

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

(4) The breath early warning device enters a rechecking mode, and detects the interval time of multiple breaths in a time period T1 min:

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

if the respiration early warning device detects that the interval time of the continuous N times of respiration of the patient is higher than the reference range, the respiration early warning device judges that the respiration of the patient is urgent, and the alarm device alarms;

if the respiration early warning device detects that the interval time of the continuous N times of respiration of the patient is lower than the reference range, the respiration early warning device judges that the respiration of the patient is too slow, and the alarm device alarms.

Above-mentioned setting mode can carry out the retest when the first appearance of breathing of wearer is unusual, reports to the police after judging that patient breathes and appears the problem, on the one hand, can report to the police when patient breathes and appear unusual in order to make caregivers get rid of the dangerous situation in time, on the other hand, breathe auxiliary device can carry out the retest, avoids the patient to breathe unsmoothly and trigger the warning by accident only to reduce the condition that appears the false alarm, it is simple convenient, reliable and stable.

Preferably, the respiration detection device comprises a shell, a power supply module, a control module and a respiration detection module, wherein the power supply module, the control module and the respiration detection module are arranged in the shell, an air inlet and an air outlet are arranged on the shell, 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 energy 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 is used for detecting the change of air flow between the air inlet and the air outlet.

Preferably, the breath detection module is a miniature column pole microphone, and the microphone is provided with a vibrating diaphragm;

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

Preferably, the alarm device comprises an indicator lamp, wherein the indicator lamp is an RGB multicolor indicator lamp;

in the step (4):

if the respiration early warning device detects that the sound wave value is in the reference sound wave range, 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 lamp of the indicator lamp is turned on;

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

The setting mode enables the alarm device to carry out light prompt, so that caregivers can find that the breathing of patients is abnormal, and the alarm effect of the breathing early-warning device is improved.

Preferably, the alarm device further comprises a buzzer;

in the step (4):

the alarm device gives an alarm response, and the buzzer gives an audible prompt.

The setting mode can enable the alarm device to carry out voice prompt, so that when a caretaker is not located at the patient, the caretaker located at a distance can be reminded of paying attention to the patient through the voice prompt, and even if dangerous cases are eliminated.

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

(1.1) connecting the breathing early-warning device to an external pipe fitting with gas output, and starting and operating the breathing early-warning device so as 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 (expiration) in the time period T2 min, and calculates the interval time between every two adjacent breaths, which is taken as a reference point of the breathing frequency.

The respiration reference range data is recorded into the respiration early-warning device, so that the respiration early-warning device can monitor the respiration of a patient according to the reference range.

Further, in the step (1), the respiration reference range data is recorded into the respiration early warning device, and the method further comprises the following steps:

(1.3) the breath early warning device is learned;

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

The setting mode can remind a caretaker of finishing recording the breathing reference range data by the breathing early warning device, and can normally execute breathing monitoring.

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

The longer the known detection time is, the more accurate and stable the detection result tends to be, and the accuracy of the respiration reference range data can be ensured by setting T2 min for detecting the respiration range data.

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

The setting mode can avoid the response of the breathing early warning device caused by accidental breathing abnormality of the patient (the patient does not have dangerous cases in practice) due to the occurrence of special cases, so that the workload of a caretaker is increased.

Preferably, the monitoring method further comprises the steps of:

(5) And (3) resetting the respiration early warning device and returning to the step (3) if the alarm device alarms in the step (4).

By resetting the respiration early-warning device, the alarm response of the alarm device can be eliminated, so that the respiration early-warning device reenters the monitoring mode.

Drawings

FIG. 1 is a first angular schematic view of a respiratory alerting device;

FIG. 2 is a second angular schematic view of a respiratory alerting device;

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

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

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

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

FIG. 7 is a cross-sectional view of the respiratory detection apparatus after assembly with a tracheal tube;

fig. 8 is a flowchart of the operation of the respiratory alerting device.

Description of the reference numerals:

the breathing early warning device comprises a breathing early warning device 1, a housing 11, a gas cavity 12, a connecting port 13, a vent hole 14, a convex wall 15, a hole 16, a breathing detection device 2, a housing 21, a gas inlet 22, a gas outlet 23, a breathing detection module 24, an external alarm device 3, a flow guide piece 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, a vent hole 51, a groove 52 and a tracheal cannula 6.

Detailed Description

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

example 1

Referring to fig. 1 to 5 and 7, a respiration early warning device 1 of the present embodiment includes a housing 11, a respiration detection device 2 and an alarm device, the housing 11 is provided with an air cavity 12, a connection port 13 and a ventilation hole 14, and the connection port 13 and the ventilation hole 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 breath detection device 2 detects the value of the sound wave generated by the airflow in the air cavity 12 to determine that the patient is in an expiration state or an inspiration state, and the breath detection device 2 detects the interval of the sound wave generated by the airflow in the air cavity 12 to determine the interval between two adjacent breaths of the patient, wherein the value of the sound wave and the interval of the sound wave form a sound wave parameter; when the breath detection device 2 detects that the acoustic wave parameter is out of the reference range, the breath detection device 2 sends an alarm signal to the alarm device so that the alarm device responds to an alarm.

Referring to fig. 2, the respiratory early-warning device 1 is arranged on the tracheal cannula 6 through the connecting port 13; the two ventilation holes 14 are respectively arranged at two sides of the shell 11, and the arrangement mode can avoid that air directly enters from the front of the invention too quickly 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, wherein the power supply module, the control module, and the breath detection module 24 are disposed in the housing 21, an air inlet 22 and an air outlet 23 are disposed on the housing 21, the air inlet 22 is located on a side of the housing 21 facing the air cavity 12, and the air inlet 22 communicates with the outside through the air outlet 23; the power 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 arranged between the air inlet 22 and the air outlet 23 for detecting a change in the air flow between the air inlet 22 and the air outlet 23. The control module can perform data optimization processing on the vocal part data, wherein the related algorithm belongs to the application of the conventional technology.

The breath detection device 2 further comprises a reset module (not shown in the figure), wherein the reset module is electrically connected with the control module and is used for resetting the control module so as to stop the control module from sending an alarm signal to the alarm device; after the alarm module responds to the alarm or is triggered by mistake, the breath 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 breath detection device 2 has a simple structure and a small number of parts, so that the structure can be designed more compactly, the whole volume is smaller, the breath detection device is convenient to install on the shell 11, the weight of the invention is reduced, and the load of a patient after wearing the breath detection device is reduced.

Referring to fig. 7, the breath detection module 24 is a miniature cylindrical microphone provided with a vibrating diaphragm; the control module obtains the sound wave value generated by airflow flow by detecting the change of the voltage caused by the vibration of the vibration diaphragm when the airflow changes.

Miniature electret microphone theory of operation: the key element of the sound-electricity conversion is an electret vibrating diaphragm, which takes an extremely thin plastic diaphragm as a substrate, one surface of the electret vibrating diaphragm is evaporated with a layer of pure metal film, and after being subjected to high-voltage electric field 'electret' treatment, opposite charges which can be kept for a long time, namely 'electrets' (also called as 'permanent charge bodies') are formed on the two surfaces; when the acoustic wave causes 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 kept constant, so that the voltage U at two ends of the capacitor is inevitably changed when C is changed according to a formula Q=CU, and an electric signal is output, so that the conversion of sound and electricity is realized; the total charge amount of the electret is unchanged, when the polar plate retreats under the pressure of sound waves, the capacitance is reduced, the voltage between the two poles of the capacitor is inversely proportional to increase, and conversely, the voltage between the two poles of the capacitor is inversely proportional to decrease when the capacitance is increased. The miniature electret microphone belongs to an application of the prior art device, which is not described in detail here.

Carbon dioxide concentration monitoring, flow sensing monitoring, wind speed sensing monitoring and differential pressure sensing monitoring: (1) Monitoring carbon dioxide concentration is commonly used in closed airways, and for open airways, the monitoring is susceptible to the influence of external carbon dioxide concentration, so that the detection result is inaccurate; (2) The structural volume of the device adopted by the flow sensing monitoring and the 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 can generate pressure difference by blocking the air pipe, and is not sensitive to the pressure of the air generated by respiration; from this, it is seen that the use of miniature electret microphones is advantageous over carbon dioxide concentration monitoring, flow sensing monitoring, wind speed sensing monitoring, differential pressure sensing monitoring.

The miniature pole microphone is small in size, high in recognition rate of sound waves, capable of effectively monitoring relatively weak sound waves generated by gentle airflow of a patient during night sleep, light in weight, convenient to carry and beneficial to reducing weight born by the neck of the patient. The miniature electret microphone belongs to a high-sensitivity directional sound wave pickup module, adopts a high-sensitivity directional sound wave technology, and under the combined action of a vibrating diaphragm and a coil (sound wave pressure collection and current signal conversion), gas flow waveforms are obtained when a patient breathes, signals of different breathing states can be accurately obtained, and different breathing states are correspondingly obtained, so that the breathing state of the patient is monitored in real time.

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

The alarm element is an audible and visual alarm element and comprises an indicator lamp and a buzzer, wherein the indicator lamp is an RGB multicolor indicator lamp; the alarm element gives an alarm response, the indicator lamp gives a light prompt, and the buzzer gives a sound prompt.

When the breath detection module 24 detects that the sound wave value is within 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 breath 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 breath detection module 24 detects that the sound wave value is below the reference sound wave range, the red light of the indicator light flashes rapidly.

The reference sound wave range of the present embodiment is a data range formed by determining a sound wave value of the breath detection module 24 in a case where air does not flow, a sound wave value of the breath detection module 24 in a case where air inflow is caused by patient inhalation, and a sound wave value of the breath detection module 24 in a case where air outflow is caused by patient exhalation.

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

The alarm device is arranged to be the external alarm device 3, so that a caretaker can conveniently carry the external alarm device 3, and the caretaker can timely find and remove dangerous cases when the breathing of a patient is abnormal or blocked.

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

Specifically, the opening 16 is provided at the upper portion of the housing 11, so as to ensure that the respiratory warning device 1 detects the gas along the rising direction of the gas flow.

By providing the opening 16, it is convenient to provide the breath detection device 2 on the housing 11, reducing the difficulty of assembling the present invention.

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

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

Because the tracheal cannula 6 is directly communicated with the outside, inhaled air cannot be filtered, heated and humidified like a nasal cavity of a human, so that the irritation of the air entering the tracheal cannula 6 is large, and the incidence rate of infection can be increased after dust, bacteria and other foreign matters easily enter the trachea. Referring to fig. 3, in order to solve the above problems, the air treatment module 45 is disposed in the air vent 14.

By providing the air treatment module 45 in the ventilation hole 14, air treatment can be performed on the gas flowing into the connection port 13, and the irritation of the gas to the patient can be reduced.

As an improvement scheme: the air treatment module is arranged in the air cavity, and although a schematic diagram of the improvement scheme is not shown in the drawings of the embodiment, the improvement method still belongs to the protection scope of the invention.

In particular, the air treatment module 45 is used to filter the air entering the air chamber 12 and to condition the air in humidity and temperature.

By filtering the air, pollutants and germs can be prevented from entering the patient along with the airflow, in addition, the main purpose of humidifying the air is to maintain the normal physiological condition of the lower respiratory tract, and proper heating and humidification are helpful for ensuring the normal function of the mucociliary transport system; the air treatment module 45 has the functions of heat preservation and humidification for the air, can simulate the upper respiratory tract function of a human body, imitate the heating and humidification of the nasal cavity, and can isolate dust and bacteria to reduce infection and compensate partial physiological functions

The air treatment module 45 comprises filter cotton.

The breathable antibacterial filter cotton can simulate the physiological functions of human respiratory tract and filter dust, bacteria, microorganisms and other particles: larger particles are intercepted by the filter membrane because of their oversized diameter; the smaller particles can have certain kinetic energy under the drive of the air flow, and move linearly under the influence of inertia to strike the filter membrane to be intercepted; small particles such as bacteria and viruses can be intercepted by the filter membrane due to irregular brownian motion.

Further, the filter cotton is lithium chloride sponge.

The lithium chloride sponge has the effects of combining chemical water and heat storage, when the exhaled air of a human body passes through the breathable antibacterial air filtering cotton, heat and moisture are reserved to warm and humidify the inhaled air, and the moisture and heat in the exhaled air can be partially and circularly inhaled, so that the water loss of the respiratory tract is reduced, the inhaled air is properly warmed, and the following technical effects are realized: (1) The temperature and the humidity of the gas entering the lung are close to the level of the expired gas, so that the metabolism and the damage of airway mucous membrane are reduced, and the generation and the infection probability of sputum are reduced; (2) Under the condition of no need of other devices for active humidification and heating, the breathing gas is warmed and humidified, so that the portability of the developed external pipe fitting is greatly improved; (3) The air is effectively filtered, the passage of bacteria is reduced, and the incidence rate of infection is reduced; (4) The hydrophobic lithium chloride sponge has higher bacterial filtration efficiency, can be replaced for one time in 5 days at most, can reduce the burden of nursing work and reduce the economic burden of patients; (5) The hydrophobic lithium chloride sponge has certain waterproof property, enriches the scene of using an external pipe fitting (tracheal cannula 6) by a patient, and greatly improves the life quality of the patient.

The air treatment module 45 further comprises several layers of gauze (not shown in the figures) made of a water absorbent material.

Because the net is provided with the micro holes, heat and moisture in the expired air can be collected and stored, and when the air passes through the air treatment module 45 during inspiration, the heat and the moisture are brought into the air cavity 12, so that the air cavity 12 is effectively and properly humidified, and meanwhile, the bacteria are filtered to a certain extent.

The filter cotton can be detachably arranged on the vent hole 14 through the cover body 5, and the vent hole 51 is arranged on the cover body 5, so that the filter cotton can be conveniently and rapidly replaced when the external pipe fitting is cleaned.

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

As an improvement scheme: the cover body extends to one side of the vent hole to form a circle of convex wall, a groove matched with the convex wall is formed on the inner side of the vent hole, and although a schematic diagram of the improvement scheme is not shown in the drawings of the embodiment, the improvement method still belongs to the protection scope of the invention.

The power supply module is a storage battery; an AP1230 voltage stabilizing chip (not shown in the figure) is arranged on the power supply module; the voltage stabilizing circuit can provide stable 3.3V voltage for a subsequent circuit, and filter capacitors are added on the two sides of the input and output of the voltage stabilizing chip to strengthen the stability of a power supply; the power supply module is provided with a power supply terminal which is used for being connected with 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 under the condition that the breathing of the patient is abnormal or blocked, and remind the patient and family members of eliminating dangerous cases in time; the help patient sends out the distress signal under emergency, lets the patient who loses sound and unmanned patient's of nurse obtain the rescue in the 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 breathing early-warning device 1, including a tracheal tube 6 and the breathing early-warning device 1, wherein the breathing early-warning device 1 is disposed on an outer end of the tracheal tube 6.

Compared with the prior art, the breathing auxiliary device is suitable for patients with dyspnea, and the breathing early warning device 1 is arranged to monitor the breathing condition of the patients in real time, and trigger an alarm when the patients have dyspnea so as to remind caregivers to timely process the patients to 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 respiration early warning device to enter a monitoring mode;

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

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

In the step (1), inputting respiration reference range data to a respiration early warning device, comprising the following steps:

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

(1.3) the breath early warning device is learned;

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

and (1.5) testing the breathing early-warning device by using an external pipe fitting with gas output, wherein the external pipe fitting is preset in the gas flow speed, checking the test result of the breathing early-warning device, judging that the breathing early-warning device can work normally 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 breathing early-warning device is distributed to the patient for use after being in a normal working state.

In step (1), still include to breathe early warning device input reference sound wave range data, include the following step:

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 inflow is caused by patient inhalation and the sound wave value of the respiration early-warning device under the condition that air outflow is caused by patient exhalation. Specifically, the maximum sound wave value generated under the condition that the air inflow is caused by the inhalation of the patient is the maximum threshold value of the sound wave in the inhalation stage; the maximum sound wave value generated under the condition that the patient exhales to cause air to flow out is the maximum threshold value of sound waves in the expiration stage; the sound wave values of the respiration early warning device under the condition that air does not flow are the minimum sound wave threshold value in the inspiration phase and the maximum sound wave threshold value in the expiration phase.

In this embodiment, the external tube with gas output is a tracheal tube, and the respiration early warning device is arranged on the tracheal tube worn by the patient, so that the respiration condition of the patient is directly detected to form respiration reference range data and reference sound wave range data. The breathing reference range may be set based on the fact that the frequency of uniform breathing of a normal person is known to be 12 to 20 times/minute.

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

In the step (4), the time period T1 epsilon (1,3600) and N epsilon (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 respiration early-warning device detects that the interval time between two adjacent breaths of the patient is higher or lower than a reference range, the respiration early-warning device judges that the respiration of the patient is abnormal, and the alarm device alarms.

Variations and modifications to the above would be obvious to persons skilled in the art to which the invention pertains from the foregoing description and teachings. Therefore, the invention is not limited to the specific embodiments disclosed and described above, but some modifications and changes of the invention should be also included in the scope of the claims of the invention. In addition, although specific terms are used in the present specification, these terms are for convenience of description only and do not limit the present invention in any way.

Claims

1. A method of monitoring a respiratory assistance device;

the breathing auxiliary device comprises a tracheal cannula and a breathing early warning device, and the breathing early warning device is arranged at the outer end of the tracheal cannula;

the monitoring method comprises the following steps:

(2) Setting a respiration early warning device to enter a monitoring mode;

if the respiration early-warning device detects that the interval time between two adjacent breaths of the patient is lower than the reference range, the respiration early-warning device judges that the respiration of the patient is abnormal;

the respiration detection device comprises a shell, a power supply module, a control module and a respiration detection module, wherein the power supply module, the control module and the respiration detection module are arranged in the shell, an air inlet and an air outlet are arranged on the shell, 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 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 is used for detecting the change of air flow between the air inlet and the air outlet;

the breath detection module is a miniature column pole microphone, and the microphone is provided with a vibrating diaphragm; a flow channel is arranged between the air inlet and the air outlet, and the microphone is positioned in the flow channel;

the control module obtains the sound wave value generated by airflow flow by detecting the voltage change caused by the vibration of the vibration diaphragm when the airflow changes;

(1.2) the breath detection module detects the times of gas outflow or expiration in a time period T2 min, calculates the interval time between every two adjacent breaths, and takes the interval time as a reference point of the respiratory rate;

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

2. The method of claim 1, wherein the alarm device comprises an indicator light, the indicator light being an RGB multicolor indicator light;

in the step (4):

3. The method of monitoring a respiratory assistance device according to claim 1, wherein the step (1) of entering respiratory reference range data into a respiratory warning device further comprises the steps of:

(1.3) the breath early warning device is learned;

4. The method of monitoring a breathing assistance apparatus according to claim 1 wherein in step (1.2) the time period T2 e (1,3600).

5. The method of monitoring a breathing assistance apparatus according to claim 1 wherein in step (4) the time period T1 e (1,3600), N e (3, 5).

6. A method of monitoring a breathing assistance apparatus according to claim 1 wherein the method of monitoring further comprises the steps of: