Respiratory warning device and respiratory assistance device and use method

Abstract

The present invention provides a respiratory warning device, comprising a housing, a respiratory detection device, and an alarm device. The housing is provided with an air cavity, a connecting port, and an air vent, wherein the connecting port and the air vent are connected via the air cavity. The respiratory detection device is disposed on the housing and is used to detect sound waves generated by airflow within the air cavity. The alarm device is connected to the respiratory detection device by wire or wirelessly. The present invention provides a respiratory assistance device that utilizes the aforementioned respiratory warning device. The respiratory warning device provided by the present invention has a respiratory sensing alarm function. The respiratory assistance device provided by the present invention can monitor the patient's respiratory condition in real time and trigger an alarm when the patient experiences respiratory distress, thereby alerting caregivers to promptly address the situation. The method of use of the present invention is simple, convenient, stable, and reliable.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a respiratory warning device and a respiratory assistance device and a use method thereof. Background Art

[0002] Tracheotomy refers to a medical procedure that involves cutting open the cervical trachea and inserting a tracheal cannula to relieve the patient's breathing difficulties. During actual treatment, medical staff will arrange for the patient to use a tracheal cannula for breathing and expectoration according to the patient's condition. However, the patient's tracheal mucosa easily rubs against the tracheal cannula during peristalsis. When the cannula of the medical trachea rubs against the patient's tracheal mucosa for a long time, it will cause repeated irritation to the patient's trachea, causing severe coughing and causing physical discomfort. In addition, when the patient's secretions or contaminants clog the tracheal cannula, the patient may suffocate without warning, resulting in serious consequences for patients who fall asleep or who have lost their voice function after surgery because they cannot immediately seek help. Therefore, it is necessary to design an alarm device suitable for the tracheal cannula. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a breathing assistance device with a breathing sensing alarm function.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A respiratory warning device includes a housing, a respiratory detection device, and an alarm device. The housing is provided with an air cavity, a connecting port, and an air vent, and the connecting port and the air vent are connected through the air cavity. The respiratory detection device is arranged on the housing and is used to detect sound waves generated by airflow in the air cavity. The alarm device is connected to the respiratory detection device by wire or wirelessly.

[0006] Compared with the existing technology, the respiratory warning device of the present invention can monitor the patient's respiratory condition, issue an alarm when the patient's breathing is abnormal or obstructed, and promptly remind the patient and his family to eliminate the danger; in an emergency, it helps the patient send a distress signal, so that voiceless patients and unattended patients can be rescued as soon as possible.

[0007] Preferably, the respiratory detection device includes a shell, a power supply module, a control module and a respiratory detection module, the power supply module, the control module and the respiratory detection module are arranged in the shell, the shell is provided with an air inlet and an air outlet, the air inlet is located on the side of the shell facing the air cavity, and the air inlet is connected to the outside world through the air outlet; the power supply module is used to supply power to the control module and the respiratory detection module; the respiratory detection module is electrically connected to the control module; the respiratory detection module is arranged between the air inlet and the air outlet, and is used to detect changes in airflow between the air inlet and the air outlet.

[0008] The above-mentioned respiratory detection device has a simple structure and a small number of parts, so that the structure can be designed to be more compact, the overall volume can be smaller, and it is easy to install on the housing, while reducing the weight of the invention and alleviating the weight on the patient after wearing the invention.

[0009] Preferably, the breathing detection module is a miniature cylindrical microphone provided with a vibrating diaphragm; the control module obtains the sound wave value generated by the airflow by detecting the change in voltage caused by the vibration of the vibrating diaphragm when the airflow changes.

[0010] Miniature cylindrical microphones are small in size and have a high recognition rate for sound waves. They can effectively monitor the relatively weak sound waves generated by the patient's gentle airflow during sleep. Furthermore, they are lightweight and easy to carry, which helps reduce the weight on the patient's neck. Miniature electret microphones are highly sensitive directional sound wave pickup modules that utilize highly sensitive directional sound wave technology. The vibrating diaphragm and coil work together (acoustic pressure collection and current signal conversion) to capture the gas flow waveform during a patient's breathing. This allows for accurate acquisition of signals for different respiratory states, corresponding to different respiratory states, thereby enabling real-time monitoring of the patient's respiratory status.

[0011] Preferably, the alarm device is an external alarm device.

[0012] The alarm device is arranged as an external alarm device, which is convenient for caregivers to carry with them, so that the caregivers can promptly discover and eliminate dangerous situations when the patient's breathing is abnormal or obstructed.

[0013] Preferably, the shell is a hollow structure, and an opening is provided on one side of the shell. The opening, the connecting port and the vent are interconnected, and the breathing detection device is arranged on the opening.

[0014] By providing the opening, it is convenient to arrange the breathing detection device on the housing, thereby reducing the assembly difficulty of the present invention.

[0015] Preferably, a flow guide is provided on the opening, and the flow guide is used to guide the airflow in the air cavity to the air inlet.

[0016] When the patient exhales, gas flows in from the connection port, and part of the gas is guided to the respiratory warning device through the guide piece. The gas rotates and collides in the inner cavity of the respiratory warning device, making a sound, thereby effectively enhancing the sensitivity of the respiratory detection module.

[0017] Preferably, an air processing module is provided in the vent hole or the air cavity.

[0018] By arranging an air processing module in the vent hole or the air cavity, the gas flowing into the connecting port can be processed, thereby reducing the irritation of the gas to the patient.

[0019] Preferably, there are two vents, which are respectively arranged on both sides of the shell. This arrangement can prevent air from entering too quickly from the front of the present invention and causing discomfort to the patient.

[0020] Another object of the present invention is to provide a respiratory assistance device using the above-mentioned respiratory warning device, comprising a tracheal tube and a respiratory warning device, wherein the respiratory warning device is arranged on the outer end of the tracheal tube.

[0021] Compared with the existing technology, the breathing assistance device of the present invention is suitable for patients with breathing difficulties. It is equipped with a breathing warning device that can monitor the patient's breathing condition in real time and trigger an alarm when the patient has breathing difficulties to remind caregivers to deal with it in time to avoid dangerous situations.

[0022] Another object of the present invention is to provide a method for using the above-mentioned breathing assistance device, comprising the following steps:

[0023] (1) Set the respiratory warning device to enter monitoring mode;

[0024] (2) The breathing warning device detects the interval between the sound waves generated by two adjacent breaths:

[0025] If the breathing warning device detects that the interval between two consecutive breaths of the patient is within the reference range, the breathing warning device determines that the patient's breathing is normal, and the breathing detection module continues to detect;

[0026] If the respiratory warning device detects that the interval between two consecutive breaths of the patient is higher than the reference range, then the process goes to step (3);

[0027] If the respiratory warning device detects that the interval between two consecutive breaths of the patient is lower than the reference range, then the process proceeds to step (3);

[0028] (3) The breathing warning device enters the retest mode and detects the interval between multiple breaths within the detection time period T1 min:

[0029] If the respiratory warning device detects that the interval between the patient's N consecutive breaths is within the reference range, then return to step (2);

[0030] If the breathing warning device detects that the interval between the patient's N consecutive breaths is higher than the reference range, the breathing warning device determines that the patient is breathing too fast, and the alarm device sounds an alarm;

[0031] If the respiratory warning device detects that the interval between the patient's N consecutive breaths is lower than the reference range, the respiratory warning device determines that the patient is bradypnea, and the alarm device sounds an alarm.

[0032] Compared with the prior art, the method for using the breathing assistance device of the present invention monitors the wearer's breathing through the breathing assistance device, and rechecks the wearer's breathing when abnormalities first occur. An alarm is triggered after it is determined that there is a problem with the patient's breathing. On the one hand, an alarm can be triggered when abnormalities occur in the patient's breathing so that caregivers can eliminate the danger in time. On the other hand, the breathing assistance device will recheck to avoid the patient triggering the alarm just because of accidental breathing difficulties, thereby reducing the occurrence of false alarms. The method is simple, convenient, stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a first angle schematic diagram of the respiratory warning device;

[0034] Figure 2 It is a second angle schematic diagram of the respiratory warning device;

[0035] Figure 3 It is an exploded view of the respiratory warning device;

[0036] Figure 4 1. It is a schematic diagram of a respiratory detection device from an upward angle;

[0037] Figure 5 1 is a schematic diagram of the guide piece when viewed from above;

[0038] Figure 6 It is a schematic diagram of the assembly of the respiratory detection device and the tracheal tube;

[0039] Figure 7 is a cross-sectional view of the assembled respiratory detection device and tracheal tube;

[0040] Figure 8 This is a working flow chart of the respiratory warning device.

[0041] Description of labels:

[0042] 1 Respiratory warning device, 11 housing, 12 air cavity, 13 connecting port, 14 vent, 15 convex wall, 16 opening, 2 Respiratory detection device, 21 housing, 22 air inlet, 23 air outlet, 24 Respiratory detection module, 3 External alarm device, 4 guide member, 41 mounting seat, 42 mounting groove, 43 guide channel, 44 flange, 45 air handling module, 5 cover body, 51 vent, 52 groove, 6 tracheal cannula. DETAILED DESCRIPTION

[0043] The following describes the embodiments of the present invention with reference to the accompanying drawings:

[0044] Example 1

[0045] See also Figures 1 to 5 、 Figure 7 The respiratory warning device 1 of this embodiment includes a shell 11, a respiratory detection device 2 and an alarm device. The shell 11 is a hollow structure, and its inner cavity forms an air cavity 12. The outer wall of the shell is provided with a connecting port 13 and a vent 14, and the connecting port 13 and the vent 14 are connected through the air cavity 12; the respiratory detection device 2 is arranged on the shell 11, and the respiratory detection device 2 is used to detect the sound waves generated by the air flow in the air cavity 12. The alarm device is connected to the respiratory detection device 2 by wire or wirelessly.

[0046] Specifically, the breathing detection device 2 determines whether the patient is in an exhalation state or an inhalation state by detecting the size of the sound wave value generated by the airflow in the air cavity 12. The breathing detection device 2 determines the interval between two adjacent breaths of the patient by detecting the interval of the sound waves generated by the airflow in the air cavity 12. The size of the sound wave value and the interval of the sound waves constitute the sound wave parameters; when the breathing detection device 2 detects that the sound wave parameters are outside the reference range, the breathing detection device 2 sends an alarm signal to the alarm device to enable the alarm device to respond to the alarm.

[0047] See also Figure 2 The respiratory warning device 1 is arranged on the tracheal tube 6 through the connecting port 13; there are two vents 14, and the two vents 14 are respectively arranged on both sides of the shell 11. This arrangement can prevent air from entering too quickly from the front of the present invention and causing discomfort to the patient.

[0048] See also Figure 4 and Figure 7 The breathing detection device 2 includes a housing 21, a power supply module (not shown in the figure), a control module (not shown in the figure), and a breathing detection module 24. The power supply module, control module, and breathing detection module 24 are arranged 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 the side of the housing 21 facing the air cavity 12, and the air inlet 22 is connected to the outside world through the air outlet 23. The power supply module is used to supply energy to the control module and breathing detection module 24. The breathing detection module 24 is electrically connected to the control module. The breathing detection module 24 is arranged between the air inlet 22 and the air outlet 23 and is used to detect changes 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, and the algorithm involved is an application of conventional technology.

[0049] The respiratory detection device 2 also includes a reset module (not shown in the figure), which is electrically connected to the control module. The reset module is used to reset the control module so that the control module stops sending an alarm signal to the alarm device; after the alarm module responds to the alarm or is mistakenly triggered, the respiratory detection device 2 is reset by the reset module, and the alarm module can stop continuing to alarm, thereby reducing the difficulty of operation for personnel.

[0050] The respiratory detection device 2 has a simple structure and a small number of parts, so that the structure can be designed to be more compact, the overall volume can be smaller, and it is easy to install on the housing 11, while reducing the weight of the invention and the weight on the patient after wearing the invention.

[0051] See also Figure 7 The breathing detection module 24 is a miniature cylindrical microphone provided with a vibrating diaphragm; the control module obtains the sound wave value generated by the airflow by detecting the change in voltage caused by the vibration of the vibrating diaphragm when the airflow changes.

[0052] Working Principle of a Micro-Electret Microphone: The key component in the "sound-to-electricity" conversion is the electret vibrating diaphragm. It uses an extremely thin plastic film as a substrate, with a thin layer of pure metal evaporated onto one side. After being subjected to a high-voltage electric field "electret" treatment, long-lasting opposite charges are formed on both sides, forming an "electret" (also known as a "permanent charge"). When sound waves cause the electret film to vibrate and displace, the distance between the two plates of the capacitor changes, causing the capacitance of the capacitor to change. Since the charge on the electret remains constant, according to the formula Q = CU, any change in C inevitably causes a change in the voltage U across the capacitor, thereby outputting an electrical signal and achieving "sound-to-electricity" conversion. The total charge of the electret is constant. When the plates retreat under the pressure of the sound wave, the capacitance decreases, and the voltage across the capacitor increases inversely proportionally. Conversely, when the capacitance increases, the voltage across the capacitor decreases inversely proportionally. This micro-electret microphone is an application of existing technology devices and will not be described in detail here.

[0053] Disadvantages of carbon dioxide concentration monitoring, flow sensor monitoring, wind speed sensor monitoring, and pressure difference sensor monitoring: (1) Carbon dioxide concentration monitoring is usually used in closed airways. For open airways, it is easily affected by external carbon dioxide concentration, resulting in inaccurate detection results; (2) The structure and volume of the devices used for flow sensor monitoring and wind speed sensor monitoring are relatively large, resulting in a heavy weight burden on the patient; (3) The device used for pressure difference sensor monitoring requires blocking the trachea to generate a pressure difference, and is not sensitive enough to the gas pressure generated by breathing; It can be seen that the use of a miniature electret microphone has more advantages than carbon dioxide concentration monitoring, flow sensor monitoring, wind speed sensor monitoring, and pressure difference sensor monitoring.

[0054] Miniature cylindrical microphones are small in size and have a high recognition rate for sound waves. They can effectively monitor the relatively weak sound waves generated by the patient's gentle airflow during sleep. Furthermore, they are lightweight and easy to carry, which helps reduce the weight on the patient's neck. Miniature electret microphones are highly sensitive directional sound wave pickup modules that utilize highly sensitive directional sound wave technology. The vibrating diaphragm and coil work together (acoustic pressure collection and current signal conversion) to capture the gas flow waveform during a patient's breathing. This allows for accurate acquisition of signals for different respiratory states, corresponding to different respiratory states, thereby enabling real-time monitoring of the patient's respiratory status.

[0055] The alarm device includes an alarm element (not shown in the figure) arranged in the breathing detection device 2, and the alarm element is electrically connected to the control module and the power supply module.

[0056] The alarm element is an acousto-optic alarm element, which includes an indicator light and a buzzer. The indicator light is an RGB multi-color indicator light. When the alarm element responds to an alarm, the indicator light gives a light prompt and the buzzer gives a sound prompt.

[0057] When the breathing detection module 24 detects that the sound wave value is within the reference sound wave range, the green light of the indicator light is on and changes with the sound wave value; when the breathing detection module 24 detects that the sound wave value is higher than the reference sound wave range, the yellow light of the indicator light is on; when the breathing 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.

[0058] The reference sound wave range of this embodiment is a data range formed by measuring the sound wave value of the breathing detection module 24 when there is no air flow, the sound wave value of the breathing detection module 24 when the patient inhales and causes air to flow in, and the sound wave value of the breathing detection module 24 when the patient exhales and causes air to flow out.

[0059] The above-mentioned setting method can enable the alarm device to provide a light prompt, making it easier for caregivers to detect abnormal breathing of the patient, thereby improving the alarm effect of the respiratory warning device.

[0060] The above setting method can make the alarm device give a sound prompt, ensuring that when there is no caregiver around the patient, the sound prompt can remind the caregiver located far away to pay attention to the patient's condition, even if the danger is eliminated.

[0061] See also Figures 1 to 2 The alarm device also includes an external alarm device 3, which can respond simultaneously with the alarm module; the external alarm device 3 is an application of a device in the prior art and is not described in detail here.

[0062] The alarm device is arranged as an external alarm device 3, which is convenient for caregivers to carry the external alarm device 3, so that the caregivers can promptly discover and eliminate dangerous situations when the patient's breathing is abnormal or obstructed.

[0063] See also Figure 3 The housing 11 is a hollow structure. An opening 16 is provided on one side of the housing 11 . The opening 16 , the connecting port 13 and the vent 14 are interconnected. The respiratory detection device 2 is provided on the opening 16 .

[0064] Specifically, the opening 16 is provided at the upper portion of the housing 11 , thereby ensuring that the respiratory warning device 1 detects gas along the ascending direction of the airflow.

[0065] The provision of the opening 16 facilitates the placement of the respiratory detection device 2 on the housing 11 , thereby reducing the difficulty of assembly of the present invention.

[0066] See also Figure 3 and Figure 5 The opening 16 is provided with a flow guide 4 , and the flow guide 4 is used to guide the air flow in the air cavity 12 to the air inlet 22 .

[0067] See also Figure 3 and Figure 5 Specifically, the guide member 4 includes a mounting seat 41 and a guide channel 43. The mounting seat 41 is detachably arranged on the opening 16. A flange 44 is provided on the upper part of the mounting seat 41, and the flange 44 rests on the opening 16. A mounting groove 42 is provided in the middle part of the mounting seat 41. The respiratory warning device is arranged in the mounting groove 42. The mounting groove 42 corresponds to the position of the air inlet 22 and extends toward the connecting port 13 to form the guide channel 43.

[0068] When the patient exhales, gas flows in from the connection port 13 , and part of the gas is guided to the respiratory warning device 1 through the guide member 4 . The gas rotates and collides in the inner cavity of the respiratory warning device 1 to make a sound, thereby effectively enhancing the sensitivity of the respiratory detection module 24 .

[0069] Since the tracheal tube 6 is directly connected to the outside world, it cannot filter, heat, and humidify the inhaled air like the human nasal cavity, resulting in greater irritation when entering the tracheal tube 6. In addition, foreign matter such as dust and bacteria can easily enter the trachea, which will increase the incidence of infection. Figure 3 In order to solve the above problems, the present invention provides an air processing module 45 in the vent hole 14 .

[0070] By arranging the air treatment module 45 in the vent hole 14 , the gas flowing into the connection port 13 can be treated, thereby reducing the irritation of the gas to the patient.

[0071] As an improved solution: the air processing module is arranged in the air cavity. Although the schematic diagram of this improved solution is not shown in the drawings of this embodiment, this improved method still falls within the protection scope of the present invention.

[0072] Specifically, the air processing module 45 is used to filter the air entering the air cavity 12 and adjust the humidity and temperature of the air.

[0073] By filtering the air, pollutants and pathogens can be prevented from entering the patient's body with the airflow. In addition, the main purpose of humidifying the air is to maintain the normal physiological conditions of the lower respiratory tract. Appropriate heating and humidification helps to ensure the normal function of the mucociliary transport system. The setting of the air processing module 45 plays a role in keeping the air warm and humidified, which can simulate the function of the human upper respiratory tract, imitate the heating and humidification of the nasal cavity, block dust and bacteria to reduce the occurrence of infection and make up for some physiological functions.

[0074] The air processing module 45 includes filter cotton.

[0075] Breathable and antibacterial filter cotton can simulate the physiological function of the human respiratory tract and filter dust, bacteria, microorganisms and other particles: larger particles will be intercepted when passing through the filter membrane because of their large diameter; smaller particles can have a certain kinetic energy under the influence of airflow, and move in a straight line under the influence of inertia, hitting the filter membrane and being intercepted; small particles such as bacteria and viruses can be partially intercepted by the filter membrane due to irregular Brownian motion.

[0076] Furthermore, the filter cotton is lithium chloride sponge.

[0077] Lithium chloride sponge has the function of combining chemical water and storing heat. When the exhaled gas of the human body passes through the breathable antibacterial filter cotton, the heat and moisture are retained to warm and humidify the inhaled gas, and the moisture and heat in the exhaled gas can be partially circulated and inhaled, thereby reducing respiratory water loss and properly warming the inhaled gas, achieving the following technical effects: (1) The temperature and humidity of the gas entering the lungs are close to the level of the exhaled gas, thereby reducing the metabolism and damage of the airway mucosa, reducing the formation of sputum and the probability of infection; (2) The exhaled gas can be warmed and humidified without the need for other devices to actively humidify and heat, greatly improving the portability of the developed external pipe fittings; (3) It effectively filters the air, reduces the passage of bacteria, and reduces the incidence of infection; (4) The hydrophobic lithium chloride sponge has a high efficiency in filtering bacteria and can be replaced every 5 days at most, which can reduce the burden of nursing work and reduce the economic burden on patients; (5) The hydrophobic lithium chloride sponge has a certain degree of waterproofness, which enriches the scenarios of patients using external pipe fittings (tracheal tube 6) and greatly improves the quality of life of patients.

[0078] The air processing module 45 further includes several layers of mesh (not shown in the figure), and the mesh is made of water-absorbing material.

[0079] Since the net has fine pores, heat and moisture in the exhaled gas can be collected and stored. When the gas passes through the air processing module 45 during inhalation, the heat and moisture are brought into the air cavity 12, ensuring that the air cavity 12 is effectively and appropriately humidified, while also having a certain filtering effect on bacteria.

[0080] The filter cotton is detachably arranged on the vent hole 14 through the cover body 5. The cover body 5 is provided with a vent hole 51. The above arrangement can facilitate the rapid replacement of the filter cotton when cleaning the external pipes.

[0081] See also Figure 3 The inner side of the vent 14 extends outward to form a circle of convex walls 15, and the cover body 5 is provided with a groove 52 adapted to the convex wall 15 on one side of the vent 14; this arrangement makes it easy to disassemble the cover body 5 and replace the filter cotton; in this embodiment, the air treatment module 45 is arranged in the groove 52.

[0082] As an improved solution: the cover body extends toward one side of the vent to form a circle of convex walls, and the inner side of the vent is provided with a groove adapted to the convex wall. Although the schematic diagram of this improved solution is not shown in the accompanying drawings of this embodiment, this improved method still falls within the scope of protection of the present invention.

[0083] The power supply module is a battery; the power supply module is provided with an AP1230 voltage regulator chip (not shown in the figure); it can provide a stable 3.3V voltage for subsequent circuits to use, and filter capacitors are added on both sides of the input and output of the voltage regulator chip to enhance the stability of the power supply; the power supply module is provided with a power supply terminal, which is used to connect an external power supply.

[0084] Compared with the existing technology, the respiratory warning device 1 of the present invention can monitor the patient's respiratory condition, issue an alarm when the patient's breathing is abnormal or obstructed, and promptly remind the patient and his family to eliminate the danger; in an emergency, it helps the patient send a distress signal, so that voiceless patients and unattended patients can be rescued as soon as possible.

[0085] Example 2

[0086] See also Figures 6 and 7 Another object of the present invention is to provide a respiratory assistance device using the above-mentioned respiratory warning device 1, comprising a tracheal tube 6 and a respiratory warning device 1, wherein the respiratory warning device 1 is arranged on the outer end of the tracheal tube 6.

[0087] Compared with the prior art, the breathing assistance device of the present invention is suitable for patients with breathing difficulties. It is provided with a breathing warning device 1, which can monitor the patient's breathing condition in real time and trigger an alarm when the patient has breathing difficulties to remind the caregiver to deal with it in time to avoid dangerous situations.

[0088] Example 3

[0089] See also Figure 8 Another object of the present invention is to provide a method for using the above-mentioned breathing assistance device, comprising the following steps:

[0090] (1) Inputting respiratory baseline range data into the respiratory warning device;

[0091] (2) Set the respiratory warning device to enter monitoring mode;

[0092] (3) The breathing warning device detects the interval between the sound waves generated by two adjacent breaths:

[0093] If the breathing warning device detects that the interval between two consecutive breaths of the patient is within the reference range, the breathing warning device determines that the patient's breathing is normal, and the breathing detection module continues to detect;

[0094] If the respiratory warning device detects that the interval between two consecutive breaths of the patient is higher than the reference range, then the process proceeds to step (4);

[0095] If the respiratory warning device detects that the interval between two consecutive breaths of the patient is lower than the reference range, then the process proceeds to step (4);

[0096] (4) The breathing warning device enters the retest mode and detects the interval between multiple breaths within the detection time period T1 min:

[0097] If the respiratory warning device detects that the interval between the patient's N consecutive breaths is within the reference range, then return to step (3);

[0098] If the breathing warning device detects that the interval between the patient's N consecutive breaths is higher than the reference range, the breathing warning device determines that the patient is breathing too fast, and the alarm device sounds an alarm;

[0099] If the respiratory warning device detects that the interval between the patient's N consecutive breaths is lower than the reference range, the respiratory warning device determines that the patient is bradypnea, and the alarm device sounds an alarm.

[0100] In step (1), the respiratory reference range data is input into the respiratory warning device, including the following steps:

[0101] (1.1) Connect the respiratory warning device to an external pipe with gas output, turn on and operate the respiratory warning device to put it into learning mode;

[0102] (1.2) The breathing detection module detects the number of times gas flows out (exhales) within the time period T2 min, calculates the average interval between each two adjacent breaths, and uses this as a reference point for the breathing rate;

[0103] (1.3) Learning of respiratory warning device is completed;

[0104] (1.4) The respiratory warning device controls the alarm device to issue a prompt, and the respiratory warning device enters normal working state.

[0105] (1.5) Use an external pipe with a gas output and a pre-set gas flow rate to test the respiratory warning device, and check the test results of the respiratory warning device. If the test results are accurate, it is determined that the respiratory warning device can work normally. If the test results are accurate, return to step (1.1) to recalibrate the respiratory warning device.

[0106] By entering the respiratory reference range data into the respiratory warning device, the respiratory warning device can monitor the patient's respiration according to the reference range.

[0107] The above setting method can remind the caregiver that the respiratory warning device has completed the entry of the respiratory baseline range data and can perform respiratory monitoring normally.

[0108] Step (1.5) ensures that the respiratory warning device is in normal working condition before it is used by the patient.

[0109] Step (1) also includes inputting reference sound wave range data into the respiratory warning device, including the following steps:

[0110] The data range is formed by measuring the acoustic wave value of the respiratory warning device when air is not flowing, the acoustic wave value of the respiratory warning device when the patient inhales and causes air to flow in, and the acoustic wave value of the respiratory warning device when the patient exhales and causes air to flow out. Specifically, the maximum acoustic wave value generated when the patient inhales and causes air to flow in is the acoustic wave threshold during the inhalation phase; the maximum acoustic wave value generated when the patient exhales and causes air to flow out is the acoustic wave threshold during the exhalation phase.

[0111] In this embodiment, the external tube with gas output is a tracheal tube. By attaching the respiratory warning device to the tracheal tube worn by the patient, the patient's breathing condition is directly detected to generate respiratory baseline range data and reference sound wave range data. It is known that the normal average breathing frequency of a person is 12 to 20 breaths per minute, and the respiratory baseline range can also be set based on this.

[0112] In step (1.2), the time period T2∈(1,3600).

[0113] It is known that the longer the detection time, the more accurate and stable the detection results tend to be. By setting T2 min to detect the breathing range data, the accuracy of the breathing baseline range data can be ensured.

[0114] In step (4), time period T1∈(1,3600), N∈(3,5).

[0115] The above-mentioned setting method can prevent the patient from accidentally having abnormal breathing due to an idiopathic condition (the patient is not actually in danger) and causing the respiratory warning device to respond, thereby increasing the workload of the caregiver.

[0116] The monitoring method further comprises the following steps:

[0117] (5) If the alarm device in step (4) sounds an alarm, the respiratory warning device is reset and the process returns to step (3).

[0118] By resetting the respiratory warning device, the alarm response of the alarm device can be eliminated, and the respiratory warning device can re-enter the monitoring mode.

[0119] This embodiment provides an optimal solution. In practical applications, there are also simplified solutions as follows:

[0120] In step (3), if the respiratory warning device detects that the interval between two adjacent breaths of the patient is higher or lower than the reference range, the respiratory warning device determines that the patient's breathing is abnormal, and the alarm device sounds an alarm.

[0121] Compared with the prior art, the method for using the breathing assistance device of the present invention monitors the wearer's breathing through the breathing assistance device, and rechecks the wearer's breathing when abnormalities first occur. An alarm is triggered after it is determined that there is a problem with the patient's breathing. On the one hand, an alarm can be triggered when abnormalities occur in the patient's breathing so that caregivers can eliminate the danger in time. On the other hand, the breathing assistance device will recheck to avoid the patient triggering the alarm just because of accidental breathing difficulties, thereby reducing the occurrence of false alarms. The method is simple, convenient, stable and reliable.

[0122] Based on the disclosure and teachings of the above description, those skilled in the art may also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and modifications and variations of the present invention should also fall within the scope of protection of the claims of the present invention. In addition, although certain specific terms are used in this description, these terms are only for convenience of description and do not constitute any limitation to the present invention.

Claims

1. A breathing assistance device, characterized in that It includes a tracheal tube and a respiratory warning device, wherein the respiratory warning device is arranged on the outer end of the tracheal tube; Respiratory warning device, including: A housing having an air cavity, a connecting port and a vent, wherein the connecting port and the vent are connected through the air cavity; a breathing detection device, which is disposed on the housing and is used to detect sound waves generated by the flow of air in the air cavity; An alarm device, the alarm device is connected to the respiratory detection device by wire or wirelessly; the alarm device is an external alarm device; The breathing detection device includes a breathing detection module for detecting airflow changes; The respiratory warning device is provided with a learning mode; When the respiratory warning device is in learning mode, respiratory baseline range data can be entered into the respiratory warning device; Entering respiratory baseline range data into the respiratory warning device includes the following steps: (1.1) Connect the respiratory warning device to an external pipe with gas output, turn on and operate the respiratory warning device to put it into learning mode; (1.2) The breathing detection module detects the number of times gas flows out within the time period T2 min and calculates the average interval between two adjacent breaths, which is used as a reference point for the breathing frequency; (1.3) Learning of respiratory warning device is completed; The method for using the breathing assistance device comprises the following steps: (1) Set the respiratory warning device to enter monitoring mode; (2) The breathing warning device detects the interval between the sound waves generated by two adjacent breaths: If the breathing warning device detects that the interval between two consecutive breaths of the patient is within the reference range, the breathing warning device determines that the patient's breathing is normal, and the breathing detection module continues to detect; If the respiratory warning device detects that the interval between two consecutive breaths of the patient is higher than the reference range, then the process goes to step (3); If the respiratory warning device detects that the interval between two consecutive breaths of the patient is lower than the reference range, then the process goes to step (3); (3) The breathing warning device enters the retest mode and detects the interval between multiple breaths within the detection time period T1 min: If the respiratory warning device detects that the interval between the patient's N consecutive breaths is within the reference range, then return to step (2); If the breathing warning device detects that the interval between the patient's N consecutive breaths is higher than the reference range, the breathing warning device determines that the patient is breathing too fast, and the alarm device sounds an alarm; If the respiratory warning device detects that the interval between the patient's N consecutive breaths is lower than the reference range, the respiratory warning device determines that the patient is bradypnea, and the alarm device sounds an alarm.

2. The respiratory assistance device according to claim 1, characterized in that The respiratory detection device further includes a housing, a power supply module, and a control module. The power supply module, the control module, and the respiratory detection module are arranged in the housing. The housing is provided with an air inlet and an air outlet. The air inlet is located on a side of the housing facing the air cavity, and the air inlet is connected to the outside world through the air outlet. The power supply module is used to supply energy to the control module and the breathing detection module; The breathing detection module is electrically connected to the control module; The breathing detection module is arranged between the air inlet and the air outlet, and is used to detect changes in the air flow between the air inlet and the air outlet.

3. The respiratory assistance device according to claim 2, characterized in that The breathing detection module is a miniature cylindrical microphone, and the microphone is provided with a vibrating diaphragm; The control module obtains the value of the sound wave generated by the airflow by detecting the change in voltage caused by the vibration of the vibrating diaphragm when the airflow changes.

4. The respiratory assistance device according to claim 2, wherein: The shell is a hollow structure, and an opening is provided on one side of the shell. The opening, the connecting port and the vent are interconnected, and the breathing detection device is arranged on the opening.

5. The breathing assistance device according to claim 4, characterized in that A flow guide is provided on the opening, and the flow guide is used to guide the air flow in the air cavity to the air inlet.

6. The respiratory assistance device according to claim 1, wherein An air processing module is provided in the vent hole or the air cavity.

7. The respiratory assistance device according to claim 1, wherein There are two vent holes, which are respectively arranged on both sides of the shell.

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