A home sleep apnea machine for monitoring sleep quality and control method thereof

Abstract

The present invention relates to the field of medical device technology, and in particular to a home sleep apnea machine for monitoring sleep quality and a control method thereof, comprising: a nasal mask connected to an external ventilator body via an air inlet duct; when a gas flow sensor detects that a patient is in an exhalation state, an exhaust unit is started to continuously exhaust the gas in the nasal mask, so that the air pressure inside the nasal mask is rapidly reduced, thereby reducing the air resistance encountered by the patient when exhaling, which is beneficial for the patient to exhale; during the patient's exhalation process, when the detection unit detects that the pressure inside the nasal mask is lower than a set value, the control unit controls the exhaust unit to reduce the exhaust speed, so that the air pressure inside the nasal mask is stably maintained at a relatively low air pressure, which is convenient for the patient to exhale and can provide certain support to the patient's airway, thereby facilitating the patient's airway collapse due to excessively low air pressure.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a home sleep apnea machine for monitoring sleep quality and a control method thereof. Background Art

[0002] A CPAP machine, also known as a continuous positive airway pressure machine, is a device used to treat sleep apnea. It works by giving the patient continuous positive air pressure to keep the airway open, effectively preventing apnea from occurring.

[0003] The prior art discloses invention patents for some ventilators. The Chinese utility model patent with application number CN202120499077.3 discloses a sleep apnea machine with a sleep quality monitoring function, including a ventilator body and a breathing mask. A control panel is provided at the front end of the outer shell of the ventilator body, and an air outlet is provided at the bottom of the ventilator body. A partition is installed on the left side of the shell, and the partition separates the left side of the shell into a control chamber, and the partition separates the right side of the shell into an air chamber. The breathing mask is connected to the ventilator body through an air supply hose, and an air inlet is provided at the lower middle part of the front end of the breathing mask.

[0004] Since the continuous positive pressure air supports the airway, the patient needs to overcome the positive pressure air in the airway when exhaling, which makes the patient encounter greater resistance when exhaling, which may make the patient have difficulty breathing and is not conducive to improving the patient's sleep quality. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art that due to the continuous positive pressure air supporting the airway, the patient needs to overcome the positive pressure air in the airway when exhaling, so that the patient encounters greater resistance when exhaling, which may cause the patient to have difficulty breathing and is not conducive to improving the patient's sleep quality. A home sleep apnea machine with sleep quality monitoring and a control method thereof are proposed.

[0006] In a first aspect, the present invention provides a home sleep apnea machine for monitoring sleep quality, comprising:

[0007] The nasal mask is connected to the external ventilator body through the air inlet duct;

[0008] A fixing strap, fixed to the side wall of the nasal mask, used to fix the nasal mask on the patient's face;

[0009] A gas flow sensor determines whether the patient is in an exhalation state or an inhalation state based on the airflow generated by the patient's breathing;

[0010] A detection unit, used to detect the gas pressure inside the nasal mask;

[0011] An exhaust unit, used for relieving the pressure inside the nasal mask when the gas flow sensor detects an exhalation state, so as to reduce the exhalation resistance of the air pressure inside the nasal mask to the patient, so that the patient can exhale smoothly;

[0012] The control unit is used to control the exhaust unit to reduce the internal air pressure of the nasal mask in the exhalation state so as to reduce the exhalation resistance of the air pressure in the nasal mask to the patient, and to control the exhaust unit to be closed in the inhalation state so as to restore the air pressure inside the nasal mask and restore the pressurized state inside the nasal mask to assist the patient's inhalation.

[0013] In a further implementation, the exhaust unit comprises:

[0014] An exhaust pipe is fixed to the bottom of the nasal mask, and the exhaust pipe is communicated with the nasal mask;

[0015] An exhaust port is provided on the side wall of the exhaust pipe and is used to exhaust the gas inside the nasal mask when the patient starts to exhale, so as to reduce the air pressure inside the nasal mask;

[0016] An adjustment component, installed inside the exhaust pipe, for adjusting the opening degree of the exhaust port;

[0017] The control unit is also used to control the adjustment state of the adjustment component according to the patient's breathing state to control the opening degree of the exhaust port.

[0018] In the further implementation process, it also includes:

[0019] The negative pressure component is installed on the outer wall of the exhaust pipe and is connected to the exhaust port. It is used to reduce the internal gas pressure when the patient just enters the exhalation state to increase the pressure difference with the inside of the exhaust pipe, thereby increasing the pressure reduction speed inside the nasal mask.

[0020] In a further implementation, the negative pressure assembly includes:

[0021] A cylinder, fixed to the outer wall of the exhaust pipe and connected to the exhaust port;

[0022] A one-way limiting assembly, installed inside the cylinder, for limiting the one-way flow of air from the cylinder to the exhaust pipe;

[0023] A vacuum pump, used for evacuating air and reducing the pressure inside the cylinder;

[0024] The control unit is used to control the vacuum pump to start when the patient just enters the exhalation state.

[0025] In the further implementation process, it also includes:

[0026] The silencer component absorbs the noise generated when exhaust is released to the outside.

[0027] In a further implementation, the detection unit includes:

[0028] A detection head, used for detecting the air pressure inside the nasal mask;

[0029] The driving assembly is used to drive the detection head to rotate and increase the detection range of the detection head.

[0030] In the further implementation process, it also includes:

[0031] The blood oxygen sensor is installed on the side wall of the fixing belt.

[0032] In a second aspect, a control method for a home sleep apnea machine for monitoring sleep quality is provided, comprising:

[0033] The nasal mask is connected to the external ventilator body through the air inlet duct;

[0034] A fixing strap, fixed to the side wall of the nasal mask, used to fix the nasal mask on the patient's face;

[0035] A gas flow sensor determines whether the patient is in an exhalation state or an inhalation state based on the airflow generated by the patient's breathing;

[0036] A detection unit, used to detect the gas pressure inside the nasal mask;

[0037] An exhaust unit, used for reducing the gas pressure inside the nasal mask when the gas flow sensor detects an exhalation state, so as to reduce the exhalation resistance of the air pressure inside the nasal mask to the patient, so that the patient can exhale smoothly;

[0038] A control unit, configured to control the exhaust unit to reduce the internal air pressure of the nasal mask in the exhalation state so as to reduce the exhalation resistance of the air pressure in the nasal mask to the patient, and to control the exhaust unit to be closed in the inhalation state so as to restore the air pressure inside the nasal mask so as to restore the pressurized state inside the nasal mask to assist the patient in inhalation;

[0039] A timer is used to start timing after a significant change occurs in the gas flow sensor, and to time a specified period of time, so as to request the control unit to obtain the gas flow values ​​of exhalation or inhalation at multiple time points within the timing period, and to perform a difference operation between the average of the gas flow values ​​of exhalation or inhalation at multiple time points and the corresponding gas flow value of exhalation or inhalation at a preset pressure value, to obtain a difference value M;

[0040] Wherein, within the timing period, if the difference M is greater than the specified value, the exhaust capacity of the exhaust unit is increased; if the difference M is less than the specified value, the exhaust unit is exhausted normally;

[0041] The control method comprises the following steps:

[0042] According to the exhalation information, the exhaust unit is controlled to start reducing the gas pressure inside the nasal mask;

[0043] According to the air pressure stability information, the exhaust unit is controlled to slow down the exhaust until the air pressure inside the nasal mask is stable;

[0044] The exhaust unit is controlled to close according to the suction information.

[0045] In a further implementation process, the specific detection method of the detection unit includes:

[0046] Controlling the detection unit to start according to the start-up information of the exhaust unit to detect the air pressure inside the nasal mask;

[0047] The detection unit is controlled to be closed according to the closing information of the exhaust unit.

[0048] In a further implementation process, the specific exhaust method of the exhaust unit includes:

[0049] Controlling the activation of the negative pressure component according to the activation information of the exhaust unit to increase the exhaust pressure difference inside the nasal mask;

[0050] The negative pressure component is controlled to stop according to the air pressure stability information.

[0051] Compared with the prior art, the present invention has the following beneficial effects:

[0052] 1. When the gas flow sensor detects that the patient is in the exhalation state, the exhaust unit is started to continuously discharge the gas in the nasal mask, so that the air pressure inside the nasal mask is quickly reduced, thereby reducing the air resistance encountered by the patient when exhaling, which is beneficial for the patient to exhale. During the patient's exhalation process, when the detection unit detects that the pressure inside the nasal mask is lower than the set value, the control unit controls the exhaust unit to reduce the exhaust speed, so that the air pressure inside the nasal mask is stably maintained at a lower pressure, which is convenient for the patient to exhale and can provide certain support to the patient's airway, thereby preventing the patient's airway from collapsing due to excessively low air pressure.

[0053] 2. After detecting that the air pressure inside the nasal mask is lower than the set value, the electric telescopic rod drives the piston to move upward, and the piston drives the side plate to block part of the exhaust port to reduce the exhaust speed, thereby making the air pressure inside the nasal mask stable and maintained at a lower air pressure value, which can reduce the exhalation pressure while providing support to the patient's airway to prevent airway collapse.

[0054] 3. When the patient exhales, the negative pressure component starts to extract the gas inside the exhaust pipe to reduce the gas pressure inside the exhaust pipe, thereby increasing the pressure difference between the air pressure inside the exhaust pipe and the air pressure inside the nasal mask. The gas inside the nasal mask can be discharged from the exhaust port at a faster rate, thereby accelerating the rate at which the air pressure inside the nasal mask decreases, so that the air pressure inside the nasal mask can be reduced to a pressure suitable for the patient's exhalation in a very short time, thereby facilitating smooth exhalation of the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 It is a flow chart of the control method of the present invention.

[0056] Figure 2 It is a schematic diagram of the structure of the nose mask part of the present invention.

[0057] Figure 3 It is a schematic diagram of the nasal mask structure of the present invention.

[0058] Figure 4 It is a cross-sectional view of the nasal mask structure of the present invention.

[0059] Figure 5 For the present invention Figure 4 A magnified view of the structure in the middle.

[0060] Figure 6 It is a schematic diagram of the exhaust unit structure of the present invention.

[0061] Figure 7 It is a schematic diagram of the main structure of the ventilator of the present invention.

[0062] Figure 8 It is a flow chart of a specific detection method of the detection unit of the present invention.

[0063] Fig. 9 It is a flow chart of a specific exhaust method of the exhaust unit of the present invention.

[0064] In the figure: 1. nasal mask; 2. ventilator body; 3. fixing belt; 4. gas flow sensor; 5. exhaust pipe; 6. exhaust port; 7. cylinder; 8. support rod; 9. forehead pad; 10. strap; 11. electric telescopic rod; 12. piston; 13. side panel; 14. vacuum pump; 15. one-way valve; 16. silencer; 17. controller; 18. ring; 19. air pressure sensor; 20. drive motor; 21. blood oxygen sensor; 22. timer. DETAILED DESCRIPTION

[0065] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0066] like Figures 2 to 7A home sleep apnea machine for monitoring sleep quality is shown, comprising:

[0067] The nose mask 1 is connected to an external ventilator body 2 through an air intake duct;

[0068] A fixing belt 3 is fixed to the side wall of the nasal mask 1 and is used to fix the nasal mask 1 on the patient's face;

[0069] In the specific implementation process, a support rod 8 is fixed to the top of the nose mask 1, a forehead pad 9 is fixed to the top of the support rod 8, and a strap 10 is fixed to the side wall of the forehead pad 9;

[0070] A gas flow sensor 4 determines whether the patient is in an exhalation state or an inhalation state according to the airflow generated by the patient's breathing;

[0071] A detection unit, used to detect the gas pressure inside the nasal mask 1;

[0072] An exhaust unit, used to release the pressure inside the nasal mask 1 when the gas flow sensor 4 detects an exhalation state, so as to reduce the exhalation resistance of the air pressure inside the nasal mask 1 to the patient, so that the patient can exhale smoothly;

[0073] A control unit, configured to control the exhaust unit to reduce the internal air pressure of the nasal mask 1 in the exhalation state, so as to reduce the exhalation resistance of the air pressure in the nasal mask 1 to the patient, and to control the exhaust unit to be closed in the inhalation state, so as to restore the air pressure in the nasal mask 1, so as to restore the pressurized state inside the nasal mask 1 to assist the patient in inhalation;

[0074] In the specific implementation process, the control unit is specifically a controller 17, and the controller 17 is installed on the ventilator body 2;

[0075] Specifically, since the single-level ventilator uses continuous positive pressure air to support the airway, the patient needs to overcome the positive pressure air in the airway when exhaling, which makes the patient encounter greater air resistance when exhaling, which may make it difficult for the patient to exhale and is not conducive to improving the patient's sleep quality. This embodiment of the present invention can solve the above problems. The specific implementation method is as follows. First, the medical staff wraps the strap 10 around the back of the head, and then ties the fixing strap 3 around the patient's neck to fix the nasal mask 1 on the patient's face. Then, the external ventilator body is started to continuously fill the interior of the nasal mask 1 with positive pressure air to provide support for the patient's airway so that the patient's airway always remains open. During the patient's breathing, a gas flow sensor is provided The device 4 can judge whether the patient is in an inhalation state or an exhalation state according to the airflow generated by the patient's breathing. When the gas flow sensor 4 detects that the patient is in an exhalation state, the exhaust unit is started to continuously discharge the gas in the nasal mask 1, so that the air pressure inside the nasal mask 1 is quickly reduced, thereby reducing the air resistance encountered by the patient when exhaling, which is beneficial for the patient to exhale. During the patient's exhalation process, when the detection unit detects that the pressure inside the nasal mask 1 is lower than the set value, the control unit controls the exhaust unit to reduce the exhaust speed, so that the air pressure inside the nasal mask 1 is stably maintained at a lower air pressure, which can provide certain support to the patient's airway while facilitating the patient's exhalation, thereby helping to prevent the patient's airway from collapsing due to excessively low air pressure.

[0076] In a further embodiment, the exhaust unit comprises:

[0077] An exhaust pipe 5 is fixed to the bottom of the nose mask 1, and the exhaust pipe 5 is communicated with the nose mask 1;

[0078] An exhaust port 6 is provided on the side wall of the exhaust pipe 5 and is used to exhaust the gas inside the nasal mask 1 when the patient starts to exhale, so that the air pressure inside the nasal mask 1 is reduced;

[0079] An adjusting component, installed inside the exhaust pipe 5, for adjusting the opening degree of the exhaust port 6;

[0080] The control unit is also used to control the adjustment state of the adjustment component according to the patient's breathing state, so as to control the opening degree of the exhaust port 6;

[0081] As an optional embodiment, Figure 4 , Figure 5 As shown, the regulating components include:

[0082] The electric telescopic rod 11 is fixed to the inner wall of the exhaust pipe 5 through a support frame;

[0083] The piston 12 is fixed to the telescopic end of the electric telescopic rod 11. The piston 12 is slidably connected to the inner wall of the exhaust pipe 5. A side plate 13 is fixed to the bottom of the piston 12.

[0084] Specifically, when it is detected that the patient starts to exhale, the electric telescopic rod 11 starts to drive the piston 12 to move downward, so that the exhaust port 6 is connected to the nasal mask 1, so that the gas in the nasal mask 1 is discharged from the exhaust port 6, so that the air pressure inside the nasal mask 1 is reduced, thereby reducing the air resistance of the patient's exhalation. After detecting that the air pressure inside the nasal mask 1 is lower than the set value, the electric telescopic rod 11 drives the piston 12 to move upward, and the piston 12 drives the side plate 13 to block part of the exhaust port 6 to reduce the exhaust speed, so that the air pressure inside the nasal mask 1 is stably maintained at a lower air pressure value, which can provide support to the patient's airway while reducing the exhalation pressure to prevent airway collapse.

[0085] In the further implementation process, it also includes:

[0086] A negative pressure component is installed on the outer wall of the exhaust pipe 5 and is connected to the exhaust port 6, and is used to reduce the internal gas pressure when the patient just enters the exhalation state, so as to increase the pressure difference with the inside of the exhaust pipe 5, thereby increasing the pressure reduction speed of the inside of the nasal mask 1;

[0087] Specifically, when the patient exhales, the negative pressure component starts to extract the gas inside the exhaust pipe 5, so that the gas pressure inside the exhaust pipe 5 is reduced, thereby increasing the pressure difference between the air pressure inside the exhaust pipe 5 and the air pressure inside the nasal mask 1. The gas inside the nasal mask 1 can be discharged from the exhaust port 6 at a faster rate, thereby accelerating the rate at which the air pressure inside the nasal mask 1 decreases, so that the air pressure inside the nasal mask 1 can be reduced to a pressure suitable for the patient's exhalation in a very short time, thereby facilitating smooth exhalation of the patient.

[0088] In a further implementation, the negative pressure component includes:

[0089] The cylinder 7 is fixed to the outer wall of the exhaust pipe 5 and communicated with the exhaust port 6;

[0090] A one-way limiting assembly is installed inside the cylinder 7 and is used to limit the one-way flow of air from the cylinder 7 to the exhaust pipe 5;

[0091] A vacuum pump 14 is used to evacuate and reduce the pressure inside the cylinder 7;

[0092] The control unit is used to control the vacuum pump 14 to start when the patient just enters the exhalation state;

[0093] As an optional embodiment, Figure 6 As shown, the one-way limit assembly is specifically a one-way valve 15;

[0094] Specifically, when the patient just starts to exhale, the air flow inside the cylinder 7 is drawn away by the vacuum pump 14, which reduces the gas pressure inside the cylinder 7 and increases the pressure difference between the cylinder 7 and the nasal mask 1, thereby accelerating the rate at which the air pressure inside the nasal mask 1 decreases. The one-way valve 15 provided can prevent external air flow from entering from the end of the cylinder 7. When the exhaled air pressure inside the nasal mask 1 is stable, the vacuum pump 14 is turned off, and the air flow is discharged from the cylinder 7 through the one-way valve 15.

[0095] In the further implementation process, it also includes:

[0096] The silencer component absorbs the noise generated when exhaust gas is discharged to the outside;

[0097] As an optional embodiment, Figure 6 As shown, the silencer assembly includes:

[0098] A silencer pipe 16 is fixedly connected to one end of the cylinder 7 away from the exhaust pipe 5, and the silencer pipe 16 is communicated with the cylinder 7;

[0099] Sound-absorbing cotton, embedded in the interior of the silencer pipe 16;

[0100] Specifically, since the airflow collides with the outside air when discharged, a large noise will be generated, and the noise generated will affect the patient's sleep. The sound-absorbing cotton and the silencer 16 can effectively reduce the noise generated when the gas is discharged, which is beneficial to prevent the noise from waking the patient up, so that the patient can sleep soundly.

[0101] In a further implementation, the detection unit includes:

[0102] A detection head, used to detect the air pressure inside the nose mask 1;

[0103] A driving assembly, used for driving the detection head to rotate and increase the detection range of the detection head;

[0104] As an optional embodiment, Figure 4 , Figure 5 As shown, the detection head includes:

[0105] A ring 18 is installed inside the nose mask 1;

[0106] A plurality of air pressure sensors 19 are embedded in a circular array on the outer wall of the ring 18;

[0107] The drive components include:

[0108] The driving motor 20 is fixed to the outer wall of the nose mask 1 through the connecting frame, and the output shaft of the driving motor 20 rotates through the outer wall of the nose mask 1 and then extends into the interior of the nose mask 1;

[0109] The timer 22 is used to start timing after the gas flow obtained by the gas flow sensor 4 undergoes a huge change, and to time a specified time period, so as to request the drive motor 20 to drive the ring 18 to rotate a specified angle multiple times within the timing time period, request multiple air pressure sensors 19 to measure multiple air pressure values ​​at the same time point, and take an average value N of the multiple air pressure values ​​measured at the same time point. Within the timing time period, the ring 18 rotates a specified angle multiple times, and measures and obtains multiple air pressure values ​​N after each rotation of the specified angle, and takes an average value L of the multiple air pressure values ​​N measured and obtained after multiple rotations of the specified angle, and performs a difference operation between the average value L and the initial value to obtain a difference value K. If K is greater than the specified value, the exhaust capacity of the exhaust unit is increased. If the difference value K is less than the specified value, the exhaust unit is exhausted normally.

[0110] The inner side of the ring 18 is fixedly connected to the output shaft of the driving motor 20 via a fixing rod;

[0111] Specifically, when exhausting, the gas inside the nasal mask 1 flows, causing the air pressure inside the nasal mask 1 to be unstable, which leads to a large error in the air pressure value detected by the air pressure sensor 19. The driving motor 20 drives the ring 18 to rotate, and the ring 18 drives multiple air pressure sensors 19 to detect the air pressure in the space inside the nasal mask 1. The average value N of the air pressure detection is taken as the actual air pressure value inside the nasal mask 1, which is beneficial to reduce the error, so that the exhaled air pressure is more accurate, so that the patient can exhale smoothly, which is beneficial to improve the patient's sleep quality.

[0112] In the further implementation process, it also includes:

[0113] The blood oxygen sensor 21 is mounted on the side wall of the fixing belt 3;

[0114] Specific instructions, such as Figure 2 As shown, the gas flow sensor 4 can detect the number of apnea and hypopnea when detecting the breathing state, and the provided blood oxygen sensor 21 can detect the patient's blood oxygen saturation. The combination of the two can determine the patient's sleep quality, and then transmit the data to the controller 17, so that the user can check the use effect of the night device and his own sleep quality after waking up;

[0115] Among them, sleep apnea-hypopnea frequency of 5-15 times per hour, accompanied by the lowest blood oxygen saturation at night of 85%-90%, is considered mild; sleep apnea-hypopnea frequency of 15-30 times per hour, accompanied by the lowest blood oxygen saturation at night of 80%-85%, is judged as moderate; sleep apnea-hypopnea frequency of >30 times per hour, accompanied by the lowest blood oxygen saturation at night of less than 80%, is judged as severe.

[0116] like Figure 1A control method for a home sleep apnea machine for monitoring sleep quality is shown, comprising:

[0117] The nose mask 1 is connected to an external ventilator body 2 through an air intake duct;

[0118] A fixing belt 3 is fixed to the side wall of the nasal mask 1 and is used to fix the nasal mask 1 on the patient's face;

[0119] A gas flow sensor 4 determines whether the patient is in an exhalation state or an inhalation state according to the airflow generated by the patient's breathing;

[0120] A detection unit, used to detect the gas pressure inside the nasal mask 1;

[0121] An exhaust unit, used to reduce the gas pressure inside the nasal mask 1 when the gas flow sensor 4 detects an exhalation state, so as to reduce the exhalation resistance of the air pressure inside the nasal mask 1 to the patient, so that the patient can exhale smoothly;

[0122] A control unit, configured to control the exhaust unit to reduce the internal air pressure of the nasal mask 1 in the exhalation state, so as to reduce the exhalation resistance of the air pressure in the nasal mask 1 to the patient, and to control the exhaust unit to be closed in the inhalation state, so as to restore the air pressure in the nasal mask 1, so as to restore the pressurized state inside the nasal mask 1 to assist the patient in inhalation;

[0123] The timer 22 is used to start timing after the gas flow sensor 4 produces a huge change, and to time a specified time period, so as to request the control unit to obtain the gas flow values ​​of exhalation or inhalation at multiple time points within the time period, and to perform a difference operation between the average value of the gas flow values ​​of exhalation or inhalation at multiple time points and the corresponding gas flow value of exhalation or inhalation at a preset pressure value, so as to obtain a difference value M;

[0124] Wherein, within the timing period, if the difference M is greater than the specified value, the exhaust capacity of the exhaust unit is increased; if the difference M is less than the specified value, the exhaust unit is exhausted normally;

[0125] The control method comprises the following steps:

[0126] Controlling the exhaust unit to start reducing the gas pressure inside the nasal mask 1 according to the exhalation information;

[0127] According to the air pressure stabilization information, the exhaust unit is controlled to slow down the exhaust until the air pressure inside the nose mask 1 is stabilized;

[0128] Control the exhaust unit to close according to the suction information;

[0129] Among them, the pressure value set in advance is the gas pressure value inside the nasal mask after the ventilator is started. When the gas flow sensor 4 detects that the patient is in an exhalation state based on the airflow of the patient's breathing, the control unit starts the exhaust unit to exhaust. After the detection unit detects that the air pressure inside the nasal mask 1 is lower than the set value, the control unit controls the exhaust unit to slow down the exhaust. When the gas flow sensor 4 detects that the patient is in an inhalation state, the control unit controls the exhaust unit to close.

[0130] like Figure 8 As shown, the specific detection method of the detection unit includes the following steps:

[0131] Controlling the detection unit to start according to the start-up information of the exhaust unit to detect the air pressure inside the nose mask 1;

[0132] Controlling the detection unit to close according to the closing information of the exhaust unit;

[0133] Among them, when the gas flow sensor 4 detects that the patient is in an exhalation state and the exhaust unit is started, the control unit controls the detection unit to detect the internal air pressure of the nasal mask 1. After the exhaust unit is turned off, the control unit controls the detection unit to turn off.

[0134] like Fig. 9 As shown, the specific exhaust method of the exhaust unit includes the following steps:

[0135] Controlling the activation of the negative pressure component according to the activation information of the exhaust unit to increase the exhaust pressure difference inside the nose mask 1;

[0136] Control the negative pressure component to stop according to the air pressure stability information;

[0137] Among them, when the gas flow sensor 4 detects that the patient is in an exhalation state and the exhaust unit is started, the control unit controls the negative pressure component to start and accelerate the exhaust speed. After the air pressure inside the nasal mask 1 is lower than the set value, the control unit controls the negative pressure component to stop.

[0138] Working principle of the present invention:

[0139] Since the single-level ventilator uses continuous positive pressure air to support the airway, the patient needs to overcome the positive pressure air in the airway when exhaling, which makes the patient encounter greater air resistance when exhaling, which may make it difficult for the patient to exhale and is not conducive to improving the patient's sleep quality. This embodiment of the present invention can solve the above problems. The specific implementation method is as follows. First, the medical staff wraps the strap 10 around the back of the head, and then ties the fixing strap 3 around the patient's neck to fix the nasal mask 1 on the patient's face. Then, the external ventilator body is started to continuously fill the inside of the nasal mask 1 with positive pressure air to provide support for the patient's airway so that the patient's airway always remains open. During the patient's breathing, the gas flow sensor 4 can It is able to judge whether the patient is in an inhalation state or an exhalation state according to the airflow generated by the patient's breathing. When the gas flow sensor 4 detects that the patient is in an exhalation state, the exhaust unit is started to continuously discharge the gas in the nasal mask 1, so that the air pressure inside the nasal mask 1 is quickly reduced, thereby reducing the air resistance encountered by the patient when exhaling, which is beneficial for the patient to exhale. During the patient's exhalation process, when the detection unit detects that the pressure inside the nasal mask 1 is lower than the set value, the control unit controls the exhaust unit to reduce the exhaust speed, so that the air pressure inside the nasal mask 1 is stably maintained at a lower air pressure, which can provide certain support to the patient's airway while facilitating the patient's exhalation, thereby helping to prevent the patient's airway from collapsing due to excessively low air pressure.

[0140] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A home sleep apnea machine for monitoring sleep quality, characterized in that: include: A nasal mask (1) is connected to an external ventilator body (2) via an air intake duct; A fixing belt (3) fixed to the side wall of the nasal mask (1) and used to fix the nasal mask (1) on the patient's face; A gas flow sensor (4) is used to determine whether the patient is in an exhalation state or an inhalation state based on the airflow generated by the patient's breathing; A detection unit, used for detecting the gas pressure inside the nasal mask (1); An exhaust unit, used for relieving the pressure inside the nasal mask (1) when the gas flow sensor (4) detects an exhalation state, so as to reduce the exhalation resistance of the patient caused by the air pressure inside the nasal mask (1), thereby allowing the patient to exhale smoothly; A control unit, used for controlling the exhaust unit to reduce the internal air pressure of the nasal mask (1) in an exhalation state so as to reduce the exhalation resistance of the air pressure in the nasal mask (1) to the patient, and for controlling the exhaust unit to close in an inhalation state so as to restore the air pressure in the nasal mask (1) so as to restore the internal pressurized state of the nasal mask (1) to assist the patient in inhalation; The exhaust unit comprises: An exhaust pipe (5) is fixed to the bottom of the nose mask (1), and the exhaust pipe (5) is in communication with the nose mask (1); An exhaust port (6) is provided on a side wall of the exhaust pipe (5) and is used to exhaust the gas inside the nasal mask (1) when the patient starts to exhale, so that the air pressure inside the nasal mask (1) is reduced; An adjustment component, installed inside the exhaust pipe (5) and used to adjust the opening degree of the exhaust port (6); The control unit is also used to control the adjustment state of the adjustment component according to the patient's breathing state, so as to control the opening degree of the exhaust port (6); Also includes: a negative pressure component, mounted on the outer wall of the exhaust pipe (5) and connected to the exhaust port (6), for reducing the internal gas pressure when the patient just enters the exhalation state, so as to increase the pressure difference with the inside of the exhaust pipe (5), thereby increasing the pressure reduction speed of the inside of the nasal mask (1); The detection unit comprises: A detection head, used for detecting the air pressure inside the nasal mask (1); A driving assembly, used for driving the detection head to rotate and increase the detection range of the detection head; A timer (22) is used to start timing after a significant change occurs in the gas flow sensor (4), and to time a specified time period, so as to request the control unit to obtain the gas flow values ​​of exhalation or inhalation at multiple time points within the time period, and to perform a difference operation between an average value of the gas flow values ​​of exhalation or inhalation at the multiple time points and the corresponding gas flow value of exhalation or inhalation at a preset pressure value, so as to obtain a difference value M; Wherein, during the timing period, if the difference M is greater than the specified value, the exhaust capacity of the exhaust unit is increased; if the difference M is less than the specified value, the exhaust unit is exhausted normally.

2. A home sleep apnea machine for monitoring sleep quality according to claim 1, characterized in that: The negative pressure component comprises: A cylinder (7) fixed to the outer wall of the exhaust pipe (5) and connected to the exhaust port (6); A one-way limiting assembly, installed inside the cylinder (7), and used to limit the one-way flow of air from the cylinder (7) to the exhaust pipe (5); A vacuum pump (14) for evacuating air and reducing the pressure inside the cylinder (7); The control unit is used to control the vacuum pump (14) to start when the patient just enters the exhalation state.

3. A home sleep apnea machine for monitoring sleep quality according to claim 1, characterized in that: Also includes: The silencer component absorbs the noise generated when exhaust is released to the outside.

4. A home sleep apnea machine for monitoring sleep quality according to claim 1, characterized in that: Also includes: The blood oxygen sensor (21) is mounted on the side wall of the fixing belt (3).

5. The control method of a home sleep apnea machine for monitoring sleep quality according to claim 1, characterized in that: The following steps are involved: Controlling the exhaust unit to start reducing the gas pressure inside the nasal mask (1) according to the exhalation information; Controlling the exhaust unit to slow down the exhaust according to the air pressure stabilization information until the air pressure inside the nose mask (1) is stabilized; The exhaust unit is controlled to close according to the suction information.

6. The control method of a home sleep apnea machine for monitoring sleep quality according to claim 5, characterized in that: The specific detection method of the detection unit includes: Controlling the detection unit to start according to the start-up information of the exhaust unit to detect the air pressure inside the nose mask (1); The detection unit is controlled to be closed according to the closing information of the exhaust unit.

7. The control method of a home sleep apnea machine for monitoring sleep quality according to claim 5, characterized in that: The specific exhaust method of the exhaust unit includes: Controlling the activation of the negative pressure component according to activation information of the exhaust unit to increase the exhaust pressure difference inside the nose mask (1); The negative pressure component is controlled to stop according to the air pressure stability information.

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