Mask applied to respiratory system

Abstract

The mask applied to the respiratory system comprises a mask body, the mask body comprises a gas storage part, an oxygen supply opening is formed in the lower portion of the gas storage part, and the gas storage part is used for containing gas from the oxygen supply opening and / or gas exhaled by a user; a detection opening is formed in the mask body and used for detecting the concentration of carbon dioxide exhaled by a user; a plurality of exhalation holes are formed in the mask main body, and are formed in two sides of the center line of the mask main body by taking the center line of the mask main body as a boundary; the exhalation hole is arranged above the oxygen supply port so as to release the exhaled gas of the user. The detection port is arranged at the position close to the exhalation hole, so that when the exhalation gas of the patient is detected through the detection port, the interference of other gases is less or no interference of other gases exists. The oxygen entering the mask blows the gas exhaled by the user to the expiration holes in the two sides of the face by means of the flowing speed of the oxygen, and the expired gas accumulated in the mask can be better exhausted.

Description

[0001] The original basis of this divisional application is the patent application with application number 202310520241.8, application date 2023.05.09, and invention name "A Breathing Detection System". Technical Field

[0002] The present invention relates to the technical field of medical monitoring, and in particular to a mask applied to a respiratory system. Background Art

[0003] Breathing is the process of gas exchange between the body and the external environment. It is a very important physiological process. Respiratory monitoring is an indispensable means. Monitoring respiratory changes can understand changes in the respiratory function of the monitored person. For example: sleep apnea syndrome, respiratory arrest occurs during sleep, and the body will suffer from hypoxemia or even respiratory failure due to lack of oxygen. For patients who need anesthesia and surgery, especially those with respiratory diseases, the assessment of respiratory function is particularly important. It can provide a reliable basis for the patient's condition and postoperative recovery and can timely monitor whether the patient's condition has worsened.

[0004] In clinical treatment, oxygen therapy is often used to correct varying degrees of hypoxia caused by certain diseases. Different oxygen therapy strategies are used for different diseases. For example, obstructive airway disease, a lung disease characterized by airflow limitation, particularly chronic obstructive pulmonary disease (COPD), has a high mortality rate and case fatality rate, placing a heavy burden on families and society. Long-term oxygen therapy is considered beneficial for post-recovery treatment of COPD patients. Furthermore, patients with acute respiratory distress syndrome (ARDS) and those undergoing cardiopulmonary resuscitation (post-CPR) require oxygen therapy.

[0005] Traditional oxygen therapy strategies rely on increasing FiO2 to maintain normal arterial oxygenation, assuming that excessive oxygen is preferable to insufficient oxygen. This strategy ignores the differences in individual responses to oxygen. Excessive oxygen can easily lead to oxygen toxicity and hyperoxia, potentially compromising patient outcomes. Growing evidence suggests that hyperoxia is potentially harmful, such as increasing the incidence of organ failure.

[0006] Therefore, it is necessary to set oxygenation targets for patients receiving oxygen therapy. Due to the patient's condition or individual differences, the optimal oxygenation target is uncertain. For patients with acute hypoxemic respiratory failure, the generally recommended oxygenation target is an arterial oxygen saturation of 88-95%. However, in actual treatment, there is still a lack of a unified indicator for patients' oxygenation targets. Some studies have also proposed conservative oxygen therapy strategies to reduce the damage caused by hyperoxia, but conservative oxygen therapy may cause hypoxic damage and fail to improve the patient's prognosis. Therefore, it is necessary to continuously monitor the patient's oxygen therapy process and use the monitoring parameters to more comprehensively assess the patient's oxygenation level to adjust the patient's oxygen therapy strategy and minimize the damage caused by hyperoxia or hypoxia to the patient.

[0007] In actual use, the oxygen production equipment currently in use usually manually adjusts the oxygen flow rate, and does not adjust itself according to the user's actual monitoring results. Nursing staff are required to observe and adjust the user's oxygen inhalation process, which brings inconvenience to nursing staff during nighttime monitoring and increases the monitoring workload. When nursing staff neglect to observe, excessive oxygen therapy or hypoxia may occur. In addition, patients with different degrees of hypoxia and carbon dioxide retention have different oxygen requirements, and there are also differences in oxygen requirements among individual patients. The current technology for blood gas monitoring is usually blood sampling and analysis, which cannot be continuously monitored. Therefore, there is a need for a system that can monitor the patient's oxygen therapy process in real time and automatically adjust the oxygen therapy mode according to the patient's actual needs. Summary of the Invention

[0008] To address the shortcomings of the existing technology, the present invention provides a respiratory monitoring system that can monitor a user's oxygen therapy process in real time and automatically adjust the oxygen therapy mode according to the user's actual needs. The respiratory monitoring system includes a mask body configured to cover at least a portion of the user's face to deliver oxygen to the user;

[0009] an oxygen supply device configured to provide oxygen to the user through the mask body;

[0010] A first monitoring unit configured to monitor a physiological parameter that changes in association with a change in the partial pressure of carbon dioxide in the arterial blood of the user;

[0011] and a central control unit, wherein the central control unit is communicatively connected to the oxygen supply device and the first monitoring unit respectively, and is characterized in that:

[0012] The central control unit is configured to: when the physiological parameter acquired by the first monitoring unit exceeds a preset range, adjust the oxygen supply device to an intermittent oxygen supply mode to adjust the oxygen supply amount provided by the oxygen supply device, thereby adjusting the oxygenation level.

[0013] Preferably, the system further comprises: a second monitoring unit configured to monitor the breathing phase of the user, wherein the breathing phase comprises at least the exhalation phase and the inhalation phase of the user, and the central control unit is configured to control the oxygen supply device to supply oxygen to the user during the exhalation phase and / or the inhalation phase according to changes in the breathing phase.

[0014] Preferably, the central control unit is configured to:

[0015] When the physiological parameter exceeds the upper limit of the preset range and is less than the first preset value, the oxygen supply device is controlled to supply oxygen to the user during a first time period of the duration of the user's exhalation phase, and stops supplying oxygen during a second time period of the duration of the user's inhalation phase, wherein,

[0016] The first preset value is a reference value of the physiological parameter for determining whether the user's arterial carbon dioxide partial pressure is slightly elevated or severely elevated.

[0017] Preferably, the central control unit is configured to:

[0018] When the physiological parameter is greater than a first preset value, the oxygen supply device is controlled to supply oxygen to the user in a third time period lasting from the late exhalation stage to the late inhalation stage, and to stop supplying oxygen in a fourth time period lasting from the late inhalation stage to the late exhalation stage.

[0019] Preferably, the physiological parameters include at least respiratory rate and heart rate.

[0020] Preferably, the oxygenation level is arterial oxygen saturation.

[0021] Preferably, the central control unit further comprises a calculation module configured to obtain the duration of the user's exhalation phase and / or inhalation phase.

[0022] Preferably, the second monitoring unit is an electrocardiogram monitoring device.

[0023] Preferably, the second monitoring unit is communicatively connected to the central control unit to receive ECG parameters from the second monitoring unit. Preferably, the ECG parameters refer to parameters that can reflect the user's ECG activity. For example, parameters such as respiratory waveforms, ECG waveforms, and heart rate obtained by an ECG monitor after monitoring the user can be used to obtain the user's respiratory phase.

[0024] Preferably, the first monitoring unit is a respiratory rate sensor.

[0025] In the present invention, physiological parameters refer to graphs or specific data monitored by the monitoring unit that can intuitively reflect the vital signs of the human body. For example, physiological parameters such as a heart rate of 80 beats / min, a blood pressure of 120 / 80 mmHg, and an end-tidal carbon dioxide value of 35 mmHg. The preset range is the fluctuation range of the user's physiological parameters within the safe range specified by the doctor's order. The first preset value is a reference value of the physiological parameter for judging whether the user's arterial carbon dioxide partial pressure is slightly elevated or severely elevated; or for judging mild carbon dioxide retention or more severe carbon dioxide retention.

[0026] The present invention also provides a mask comprising at least a mask body configured to deliver oxygen to a user in a manner that covers the user's nose and at least partially covers the user's mouth. The mask body is capable of fluid communication with an externally provided conduit. The mask body is capable of fluid communication with a monitoring device.

[0027] Preferably, the mask body comprises at least a gas storage portion, which is arranged on the mask body in a manner adapted to the nose and mouth of the user.

[0028] Preferably, an oxygen supply port is provided below the gas storage portion, and the gas storage portion is used to accommodate gas from the oxygen supply port and / or gas exhaled by the user.

[0029] Preferably, the mask body is provided with exhalation holes. Preferably, the body is provided with a plurality of exhalation holes. The midline of the mask body is taken as the midline of the human face, and the exhalation holes are arranged on both sides of the midline of the mask body with the midline of the mask body as the dividing line.

[0030] According to a preferred embodiment, the exhalation hole is positioned above the oxygen supply port. This arrangement facilitates the release of the user's exhaled air. Preferably, the exhalation hole centers are positioned on either side of the midline of the mask body. The exhalation holes are positioned on either side of the midline of the mask body, surrounding the exhalation hole center.

[0031] According to a preferred embodiment, a detection port is further provided on the mask body. The detection port is provided with an adapter that can be connected to an external catheter or a monitoring device. Preferably, the monitoring device can be a sensor. Preferably, the monitoring device is configured to detect the concentration of carbon dioxide. Specifically, the sensor is an end-tidal ETCO2 sensor. The detection port includes a first detection port and a second detection port. The first detection port and the second detection port are respectively arranged on both sides of the main body with the center line of the main body as the dividing line. Preferably, the first detection port and the second detection port are respectively arranged at the center of the exhalation hole on both sides of the center line of the main body above the oxygen supply port.

[0032] Preferably, there is a first distance between the centers of the first detection port and the second detection port and the center of the oxygen supply port. Specifically, the first distance can be 0.5 to 3 cm.

[0033] Preferably, the detection system further comprises an alarm device, which sends an alarm signal in response to the level of the exhaled gas detected by the monitoring device exceeding a preset range.

[0034] Beneficial effects of the present invention: Currently, for the problem of carbon dioxide retention in type II respiratory failure, continuous low-flow oxygen inhalation is usually used to alleviate the symptoms. The present invention adopts intermittent oxygen supply according to the user's breathing stage to alleviate the symptoms, and the oxygen flow rate can be set higher than the traditional oxygen flow rate. The advantage of this setting is: oxygen is supplied during the user's exhalation stage and stopped during the inhalation stage. The oxygen entering the mask uses its flow rate to blow the user's exhaled gas to the exhalation holes on both sides of the face, helping to better discharge the exhaled gas accumulated in the mask. After the oxygen enters the mask and diffuses during the exhalation stage, its concentration will decrease. When it reaches the user's inhalation stage, it can ensure that the final inhalation concentration will not be too high, and the user can be prevented from repeatedly inhaling CO2 during the inhalation stage as much as possible, ultimately achieving the purpose of improving ventilation and adjusting the oxygenation level to a level approved by the doctor. Especially for users with shallow and rapid exhalation, in the traditional oxygen therapy process, the CO2 exhaled by the user is inhaled into the body again before it is discharged. The present invention can solve this problem very well. In addition, the present invention does not need to adjust the oxygen flow parameter or oxygen concentration multiple times, but adjusts the final oxygen concentration by the time period of intermittent oxygen supply. Compared with the intermittent oxygen supply mode for mild carbon dioxide retention, the intermittent oxygen supply mode for severe carbon dioxide retention adopts a third time period from the late exhalation stage to the late inhalation stage to supply oxygen to the user, and stops supplying oxygen in the fourth time period from the late inhalation stage to the late exhalation stage. Due to the difference between users with mild carbon dioxide retention and those with severe carbon dioxide retention, the intermittent oxygen supply mode can effectively reduce the risk of CO2 exhalation. Users with severe carbon dioxide retention have different oxygen requirements. The present invention only needs to turn on and off the oxygen supply according to the user's breathing stage, and there is no need to set parameters such as oxygen flow or oxygen concentration. Different oxygen supply modes can use the same oxygen flow parameter settings. For situations where oxygen demand is low, the mode of supplying oxygen in the exhalation stage and stopping oxygen supply in the inhalation stage is used to allow the oxygen entering the mask time to diffuse to reduce the user's final oxygen inhalation concentration. For situations where oxygen demand is greater, oxygen supply is adopted in the late exhalation stage until oxygen supply is stopped in the late inhalation stage to ensure the user's oxygen inhalation amount. In addition, according to the individual breathing differences of the user, the respiratory detection system can set a breathing mode suitable for the user to achieve better oxygen therapy effects.

[0035] In the prior art, oxygenation targets for users undergoing oxygen therapy are typically set based on a theoretically appropriate oxygenation target for that user, without taking into account individual differences or variations in the user's condition. Due to these individual differences or variations in the user's condition, the oxygenation target that is theoretically appropriate for the user may, in practice, be higher or lower than the user's actual oxygenation target. Setting the theoretical oxygenation target as the user's actual oxygenation target can result in over-oxygenation or hypoxia, which is detrimental to the user's recovery. Based on the monitoring of the user's actual oxygen therapy process, the present invention can adjust the user's oxygenation target and set an oxygenation target suitable for the user in a targeted manner. In addition, continuous oxygen inhalation or long-term high-concentration oxygen inhalation will cause damage to the body. In the present invention, when the oxygenation target suitable for the user is reached and each physiological parameter is within a preset range, the oxygen supply device stops supplying oxygen, but the monitoring unit continues to monitor the user's vital signs. When the oxygen supply is stopped, the user can maintain normal vital signs and does not need to continue to inhale oxygen; when the oxygen supply is stopped, if the user experiences varying degrees of hypoxia, oxygen will continue to be supplied to the user, and a suitable oxygen supply mode will be selected to supply oxygen to the user. Compared with the detection system of the prior art, the advantages of the present invention are: overcoming the defect of supplying oxygen to users according to theoretical oxygenation targets in the past oxygen therapy, selecting an oxygen therapy strategy suitable for the user according to individual differences and differences in the condition of the user when performing oxygen therapy on the user, and since oxygen therapy is usually carried out for a long time, the present invention can avoid the harm to the user caused by only relying on theoretical oxygenation targets and theoretical oxygen therapy strategies during oxygen therapy. Past studies have shown that in the treatment of critically ill patients in the ICU, both low oxygenation targets and high oxygenation targets will increase the mortality rate, especially when the arterial oxygen saturation exceeds the specified oxygen therapy target. For every 1% increase in the oxygenation target, the patient's mortality rate increases accordingly. Both high oxygen and low oxygen in oxygen therapy will affect the user's prognosis. Therefore, the present invention sets oxygenation targets for users in a targeted manner and provides an oxygen supply mode suitable for the user according to the user's actual situation, which is significantly superior to the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 1 is a schematic diagram of a face mask according to a preferred embodiment of the present invention;

[0037] Figure 2 This is a simplified schematic diagram of a telescopic portion of a mask according to a preferred embodiment of the present invention;

[0038] Figure 3 It is a simplified connection diagram of a breathing detection system according to a preferred embodiment of the present invention.

[0039] Reference Signs List

[0040] 100: Mask body; 110: Gas storage part; 120: Oxygen supply port; 130: Detection port; 131: First detection port; 132: Second detection port; 140: Exhalation hole; 141: Exhalation hole center; 150: Retractable part; 151: Adhesive part; 160: Belt part; 200: Oxygen supply device; 300: First monitoring unit; 400: Second monitoring unit; 500: Central control unit; 510: Computing module; 600: Oxygen duct. DETAILED DESCRIPTION

[0041] The following is a detailed description with reference to the accompanying drawings.

[0042] It should be noted that the terms "upper," "lower," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of the invention, it should be noted that, unless otherwise expressly specified or limited, the terms "provided with," "connected," and the like should be understood broadly. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or a connection between the internal parts of two components. "Several" means two or more, unless otherwise expressly specified or limited. A person skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0043] Example 1

[0044] This embodiment provides a mask, such as Figure 1As shown, the mask comprises a mask body 100 that can cover the user's nose and at least a portion of the mouth. The mask is used to deliver oxygen to the user. The mask body 100 can be in fluid communication with an externally provided conduit. The mask body 100 includes at least a gas reservoir 110. The gas reservoir 110 provides space for the nose and mouth and allows exhaled and inhaled gases to mix there. The gas reservoir 110 is positioned on the mask body 100 to fit the user's nose and mouth, facilitating breathing. Preferably, the gas reservoir 110 extends from the level of the mouth to the level of the nose. An oxygen supply port 120 is provided below the gas reservoir 110. The gas reservoir 110 is used to receive gas from the oxygen supply port 120 and / or exhaled gas from the user. To provide oxygen to the user, the distal end of the conduit is connected to the oxygen supply port 120, and the proximal end of the conduit is connected to an oxygen supply device 200. Preferably, the oxygen supply device 200 is a central oxygen supply system in a hospital. Preferably, the oxygen supply device 200 is an oxygen cylinder. Preferably, the oxygen supply device 200 is an oxygen storage tank.

[0045] In this embodiment, the mask body 100 is further provided with a detection port 130. The detection port 130 is provided with an adapter capable of connecting to an external catheter or monitoring device. Preferably, the monitoring device can be a sensor. Preferably, the monitoring device is configured to detect the concentration or partial pressure of carbon dioxide. Specifically, the monitoring device is an end-tidal ETCO2 sensor. The end-tidal ETCO2 sensor is connected to the detection port 130 to detect the concentration of carbon dioxide exhaled by the user. Preferably, the monitoring device is configured to detect the partial pressure of carbon dioxide. The detection port 130 includes a first detection port 131 and a second detection port 132. Specifically, the monitoring device can be an infrared sensor or a colorimetric sensor. The first detection port 131 and the second detection port 132 are respectively arranged on either side of the mask body 100, with the midline of the mask body 100 as the dividing line. Preferably, the distal end of the external catheter is connected to only one of the detection ports. Preferably, the distal end of the external catheter can be connected to the first detection port 131. Preferably, the distal end of the external catheter can be connected to the second detection port 132.

[0046] Preferably, a first distance is defined between the center of detection port 130 and the center of oxygen supply port 120. Preferably, a first distance is defined between first detection port 131 and the center of oxygen supply port 120. Preferably, a first distance is defined between second detection port 132 and the center of oxygen supply port 120. Specifically, the first distance can be 0.5 to 3 cm.

[0047] According to a preferred embodiment, the mask body 100 is provided with at least one exhalation hole 140. The exhalation hole 140 allows gases or other substances inside the mask body 100 to be discharged to the outside of the mask body 100. The gas can be carbon dioxide, oxygen, etc. Preferably, the mask body 100 is provided with multiple exhalation holes 140. The multiple exhalation holes 140 are arranged on both sides of the midline of the mask body 100, with the midline of the mask body 100 as the dividing line. According to a preferred embodiment, the exhalation holes 140 are located above the oxygen supply port 120. The arrangement of the exhalation holes 140 facilitates the release of the user's exhaled gases. Preferably, an exhalation hole center 141 is provided on both sides of the midline of the mask body 100. The exhalation holes 140 are arranged on both sides of the midline of the mask body 100 in a manner surrounding the exhalation hole center 141. The detection port 130 can be located on the mask body 100 adjacent to the exhalation hole 140. Preferably, a plurality of exhalation holes 140 are arranged on the mask body 100 in a manner surrounding the detection port 130. Preferably, the center of the detection port 130 is located within the center of the exhalation hole 140. Preferably, a plurality of exhalation holes 140 are arranged on one side of the center line of the mask body 100 in a manner surrounding the first detection port 131. Preferably, a plurality of exhalation holes 140 are arranged on the other side of the center line of the mask body 100 opposite to the first detection port 131 in a manner surrounding the second detection port 132. Preferably, the detection port 130 is outside the area surrounded by the plurality of exhalation holes 140. Specifically, the center of the detection port 130 is 0.5 to 3 cm away from the exhalation hole 140, and the center of the detection port 130 is 0.5 to 3 cm away from the center of the exhalation hole 141.

[0048] Preferably, the exhalation hole 140 is connected to the flexible membrane to form a one-way air valve. The one-way air valve allows gas inside the mask body 100 to be discharged to the outside of the mask body 100. The one-way air valve does not allow gas outside the mask body 100 to enter the interior of the mask body 100. Preferably, the one-way air valve provided in this embodiment is a valve of various types that allows one-way flow of gas. Preferably, the one-way air valve is integrally formed with the mask body 100. Preferably, the one-way air valve is a single component independent of the mask body 100. When the gas flows out from the inside of the mask body 100 through the one-way air valve, the exhalation hole 140 has little resistance to the outflowing gas. The advantage of setting the detection port 130 near the exhalation hole 140 is that when the user's exhaled gas is detected through the detection port 130, there is less or no interference from other gases. For example, there is no interference from external air or input oxygen, and the result is more accurate. When the detection port 130 is set close to the oxygen supply port 120, the oxygen input into the mask body 100 by the oxygen supply device 200 will interfere with the exhaled gas of the detection port 130, making the detection result inaccurate. For example, a low carbon dioxide level and a high oxygen amount may be detected, causing medical staff to misjudge the user's condition.

[0049] Preferably, the mask is removably attached to the user's face to form a sealed cavity. This arrangement helps to store gas in the sealed cavity, maintains a stable oxygen concentration, and prevents changes in breathing patterns from altering the inhaled oxygen concentration. According to a preferred embodiment, the detection port 130 is located in the gas storage unit 110.

[0050] Preferably, the mask body 100 is capable of being in fluid communication with the monitoring device. The mask body 100 further includes a cap provided on the detection port 130. Preferably, the cap is removably connected to the detection port 130. Preferably, the cap is used to seal the sensor port of the anesthesia ventilator. Preferably, a first cap is provided on the first detection port 131. Preferably, a second cap is provided on the second detection port 132. In the anesthesia breathing circuit, after removing the first cap on the first detection port 131, the sensor port is exposed after removing the catheter from the sensor on the anesthesia breathing circuit, the removed first cap is connected to the sensor port, thereby sealing the sensor port, and then the catheter is connected to the exposed first detection port 131.

[0051] Preferably, the detection system further includes a conduit connected to the detection port 130, an oxygen conduit 600 connected to the oxygen supply port 120, an oxygen supply device 200, and a sensor. The conduit is used to deliver the user's exhaled air to the monitoring device. The oxygen conduit 600 is used to deliver oxygen from the oxygen supply device 200 to the mask to provide oxygen to the user.

[0052] Preferably, the mask body 100 includes a first connector that connects the catheter to the detection port 130. Specifically, the first connector is configured to be able to rotate relative to the detection port 130 with at least two degrees of freedom when connected to the detection port 130. Specifically, the first connector is configured to be able to rotate relative to the detection port 130 with at least two degrees of freedom when connected to the catheter.

[0053] Preferably, the mask body 100 includes a second connector that connects the oxygen conduit 600 to the oxygen supply port 120. Specifically, the second connector is configured so that when connected to the oxygen supply port 120, it can rotate relative to the oxygen supply port 120 with at least two degrees of freedom. Specifically, the second connector is configured so that when connected to the oxygen conduit 600, it can rotate with at least two degrees of freedom.

[0054] Preferably, when the catheter is connected to the first connector, at least a portion of the catheter is movable along with movement of the first connector.

[0055] Preferably, when the oxygen conduit 600 is connected to the second connecting member, at least a portion of the oxygen conduit 600 can move along with the movement of the second connecting member.

[0056] Preferably, the first connecting member cooperates with the adapter portion provided on the detection port 130 to firmly and sealedly connect the catheter to the detection port 130 .

[0057] Preferably, the first connecting member has an opening allowing gas to pass through.

[0058] Preferably, the mask body 100 includes a retaining member that holds at least one of the connector and the conduit in a preferred position approved by a healthcare professional.

[0059] Preferably, the catheter is provided with a rigid portion. The rigid portion is harder than other portions of the catheter. Specifically, the rigid portion is approximately 4 to 5 cm away from the first connector.

[0060] Preferably, the mask body 100 is made of a fire-resistant material. For example, the mask body 100 can be made of a polyvinyl fluoride material.

[0061] Preferably, both side edges of the mask body 100 are provided with a belt portion 160 for holding the mask body 100 in a suitable position on the user's face. The belt portion 160 holds the mask body 100 on the user's face in a manner that is wrapped around the user's head.

[0062] Preferably, the mask body 100 is removably attached to the user's face by an adhesive material.

[0063] According to a preferred embodiment, the mask body 100 is provided with a telescopic portion 150, such as Figure 2As shown. Preferably, the telescopic part 150 is configured as a corrugated strip. The material of the telescopic part 150 is silicone. The telescopic part 150 is respectively arranged on both sides of the mask body 100 with the center line of the mask body 100 as the dividing line. The telescopic part 150 extends in the direction of the center line of the mask body 100. Preferably, the telescopic part 150 is arranged on both sides away from the center line of the mask body 100, adjacent to the first detection port 131 and the second detection port 132. According to a preferred embodiment, adhesive members 151 are provided on both sides of the telescopic part 150. The adhesive member 151 keeps the telescopic part 150 at its original size. When the mask body 100 needs to be enlarged, the adhesive members 151 on both sides of the telescopic part 150 are separated so that the telescopic part 150 is unfolded, thereby increasing the coverage area of the mask body 100. When the mask body 100 needs to be restored to its original size, the adhesive members 151 on both sides of the telescopic portion 150 are pressed together, so that the telescopic portion 150 changes from an expanded state to a compressed state. Masks used in clinical treatments are of a fixed size. Due to individual differences, masks of the same specifications cannot meet the needs of different users. Therefore, the addition of the telescopic portion 150 allows the mask size to be adjusted to meet the needs of different users.

[0064] Example 2

[0065] This embodiment is an improvement on embodiment 1, and the repeated contents are not repeated here.

[0066] This embodiment provides a respiratory monitoring system. The respiratory monitoring system includes at least a mask body 100, a monitoring device, and an oxygen supply device 200. The respiratory monitoring system can supply oxygen to the user and detect the user's exhaled air through the detection port 130. In clinical treatment, it can be used for users who require supplemental oxygen, such as those undergoing surgery, to provide oxygen and monitor respiration to ensure the user's normal breathing. If a user experiences abnormal breathing, medical staff can promptly detect the abnormality and quickly administer emergency measures.

[0067] like Figure 1As shown, the mask body 100 has one or two detection ports 130, which are arranged between the horizontal line of the nose and the horizontal line of the mouth. The provision of two detection ports 130 can meet the needs of most users. On the one hand, when the user is in different lying positions such as supine or side-lying, since the detection ports 130 are provided on both sides of the mask body 100, the detection ports 130 can be connected from a more convenient side, or the two detection ports 130 can be used for different purposes. Medical staff can perform different sampling tests through the two detection ports 130 during the physical examination of the user. On the other hand, the mask body 100 can be used for both oxygen supply and user's breathing monitoring, such as respiratory support and respiratory monitoring for anesthetized patients, critically ill patients in the ICU, and users in the respiratory department, so as to promptly detect dangerous situations such as insufficient ventilation, respiratory depression, and airway obstruction.

[0068] Preferably, the first detection port 131 and the second detection port 132 can be arranged symmetrically or asymmetrically on either side of the midline of the mask body 100. When the mask body 100 is worn in the appropriate position on the user's face, the detection port 130 can be located above the horizontal line of the user's upper lip. The detection port 130 can collect air exhaled from the user's nose and / or mouth. The detection port 130 can also collect other gases, such as oxygen provided by the oxygen supply device 200, indoor air, etc.

[0069] Preferably, the detection port 130 can be set at a position between the nose and the mouth.

[0070] According to a preferred embodiment, the detection port 130 is provided on both sides of the midline of the mask body 100 and at a position higher than the oxygen supply port 120. In particular, during surgery, the anesthesiologist operates at the head of the user's bed. If the detection port 130 is provided adjacent to the oxygen supply port 120, it will be inconvenient for the anesthesiologist to operate. This is because the detection port 130 will be outside the anesthesiologist's field of view. In addition, the anesthesiologist needs to pass over the user's face to connect the catheter to the detection port 130. When the anesthesiologist's arm passes over the user's face, it will approach and block the user's eyes or other sensitive parts, which can easily cause panic in the user. When the detection port 130 is provided on both sides of the midline of the mask body 100, the anesthesiologist can choose to connect the detection port 130 to the monitoring equipment according to the convenience of operation. The position of the detection port 130 is fully exposed to the anesthesiologist's field of view, thus facilitating the anesthesiologist's operation.

[0071] The separation of the oxygen supply port 120 and the detection port 130 can reduce interference with sampling at the detection port 130. The conduit connected to the detection port 130 and the oxygen conduit 600 connected to the oxygen supply port 120 do not interfere with each other.

[0072] The detection port 130 is provided with an adapter to interfere with the catheter. Specifically, the adapter of the detection port 130 is a male Luer connector, and the distal end of the catheter is a female Luer connector that matches it.

[0073] Select the detection port 130 on one side of the mask body 100. In this embodiment, the first detection port 131 is used as an example. The distal end of the catheter is connected to the first detection port 131, and the proximal end of the catheter is connected to the sensor. The user's exhaled gas enters the catheter through the first detection port 131 and finally enters the sensor, which detects the user's exhaled gas. In this embodiment, the user's exhaled gas refers to carbon dioxide. The sensor is a carbon dioxide sensor. The carbon dioxide sensor detects the partial pressure of carbon dioxide exhaled by the user.

[0074] The detection system also includes an alarm device. Preferably, the alarm device can be an audible alarm. In response to the level of exhaled gas detected by the monitoring device exceeding a preset range, the alarm device issues an alarm signal. For example, if the end-tidal carbon dioxide value detected exceeds 35-45 mmHg, the alarm device issues an audible prompt.

[0075] Preferably, the gas exhaled by the user is discharged from the mask through the exhalation hole 140. Specifically, during atomization therapy or aerosol therapy, the gas exhaled by the user is discharged from the mask through the exhalation hole 140. Preferably, the gas exhaled by the user is discharged from the mask through a one-way valve.

[0076] The oxygen supply device 200 delivers oxygen to the oxygen supply port 120 via the oxygen conduit 600, providing the user with an appropriate concentration of oxygen. Preferably, the provided oxygen concentration can be between 21% and 100%. The oxygen flow rate can be set to low, medium, or high depending on the user's condition.

[0077] Example 3

[0078] Oxygen inhalation therapy is one of the most commonly used treatments in hospitals. For example, critically ill patients and other patients with respiratory diseases all require oxygen therapy. Due to the differences in conditions among different patients, their oxygen partial pressure targets vary. Not all patients require correcting their arterial oxygen partial pressure (PaO2) to 80-100 mmHg and their blood oxygen saturation to 95%-100% during oxygen therapy. Furthermore, while oxygen therapy is essential in clinical treatment, uncorrected hypoxia or over-oxygenation may occur during oxygen therapy. Based on individual patient conditions, doctors typically set a theoretically appropriate oxygenation target based on past clinical experience. However, due to individual differences in patient response to oxygen, a theoretically appropriate oxygenation target may not be the optimal target for that patient. Current oxygen therapy processes have a low degree of automation and require manual monitoring, increasing the workload of medical staff. In the event of oversight in manual monitoring, hypoxia or over-oxygenation may not be detected in a timely manner, potentially causing harm to the patient. Therefore, this embodiment provides a respiratory monitoring system that establishes an appropriate oxygenation target and oxygen therapy strategy for the patient based on real-time monitoring parameters.

[0079] This embodiment provides a respiratory detection system, which at least includes a monitoring device, a central control unit 500, and an oxygen supply device 200. The central control unit 500 is communicatively connected to the monitoring unit and the oxygen supply device 200, respectively, so that the detection system can work in coordination. Preferably, the monitoring unit includes at least an electrocardiogram monitor, a blood oxygen sensor, and an end-tidal carbon dioxide monitor. Preferably, the central control unit 500 is communicatively connected to the user's medical record database. The blood oxygen monitoring unit is used to monitor the user's dynamic blood oxygen value, pulse rate, body temperature and other physiological parameters.

[0080] Studies have shown that in the treatment of critically ill ICU patients, both low and high oxygenation targets increase mortality, especially when arterial oxygen saturation exceeds the target for oxygen therapy. For every 1% increase in the oxygenation target, the patient's mortality rate increases. Furthermore, critically ill patients receiving conservative oxygen therapy have a mortality rate nearly 10% lower than those receiving aggressive oxygen therapy, and the incidence of shock and liver failure is lower. The oxygen dosage and duration of oxygen therapy vary according to the patient's condition. Therefore, establishing appropriate oxygenation targets and oxygenation strategies for patients (users) can ensure the effectiveness of oxygen therapy and provide better outcomes for users.

[0081] This example uses a critically ill ICU patient as an example to illustrate the working principle of the respiratory monitoring system. The central control unit 500 retrieves the corresponding patient's treatment information from the patient's medical record database. Preferably, this treatment information includes at least the patient's department, surgical history, and medical order information. Preferably, the user is a critically ill ICU patient suffering from acute hypoxemic respiratory failure. The medical order information sets a first oxygenation target, a second oxygenation target, and a third oxygenation target for the user. According to a preferred embodiment, the first oxygenation target is the theoretically optimal oxygenation target for this type of user. The second oxygenation target is greater than the first oxygenation target. The second oxygenation target is configured as the actual oxygenation target determined by the central control unit 500 if the user is determined to be hypoxic at the first oxygenation target. The third oxygenation target is less than the first oxygenation target but not less than 90%. The third oxygenation target is configured as the actual oxygenation target determined by the central control unit 500 if the user is determined to be overoxygenated at the first oxygenation target. Preferably, the first oxygenation target in the user's medical order information is an arterial oxygen saturation of 94-96%. Preferably, the second oxygenation target in the medical order information is an arterial oxygen saturation of 97%. Preferably, the third oxygenation target in the medical order information is an arterial oxygen saturation of 90-93%. When the user undergoes oxygen therapy, the central control unit 500 controls the oxygen supply mode based on the medical order information. Preferably, the oxygen supply device 200 is provided with a first oxygen supply mode, a second oxygen supply mode, and a third oxygen supply mode. Preferably, the first oxygen supply mode is continuous high-concentration oxygen supply. Preferably, the second oxygen supply mode is a continuous oxygen supply mode with a higher oxygen concentration than the first oxygen supply mode. Preferably, the third oxygen supply mode is intermittent low-concentration oxygen supply. Specifically, the oxygen therapeutic concentration in the first oxygen supply mode is set to 45%. Specifically, the oxygen therapeutic concentration in the second oxygen supply mode is set to 50%. Specifically, the oxygen therapeutic concentration in the third oxygen supply mode is set to 30%. The central control unit 500 first controls the oxygen supply device 200 based on the user's medical order information. Preferably, the central control unit 500 controls the oxygen supply device 200 to provide oxygen therapy to the user in a first oxygen supply mode based on the first oxygenation target. Preferably, the oxygen supply device 200 can be a ventilator. Preferably, the oxygen supply device 200 can be an oxygen cylinder. The blood oxygen sensor, respiratory rate sensor, and blood gas analysis unit provide real-time feedback to the central control unit 500 on the user's physiological parameters during oxygen therapy. The central control unit 500 adjusts the user's oxygenation target and oxygen therapy strategy based on the user's actual physiological parameters during oxygen therapy.

[0082] In this embodiment, the central control unit 500 is configured as follows:

[0083] The central control unit 500 first sets the first oxygenation target as the user's oxygenation target. The central control unit 500 controls the oxygen supply device 200 to supply oxygen to the user in a first oxygen supply mode, for example, a continuous oxygen supply mode with an oxygen concentration of 45%. The blood oxygen sensor monitors the user's blood oxygen saturation and feeds back the monitored blood oxygen saturation parameter to the central control unit 500. The blood oxygen sensor is communicatively connected to the central control unit 500. The respiratory rate sensor monitors the user's respiratory rate and feeds back the monitored respiratory rate parameter to the central control unit 500. The respiratory rate sensor is communicatively connected to the central control unit 500. The user's arterial oxygen partial pressure is obtained through the blood gas analysis unit and the arterial oxygen partial pressure parameter is fed back to the central control unit 500. The blood gas analysis unit is used to monitor the arterial oxygen partial pressure parameter.

[0084] When the central control unit 500 receives information that the user's blood oxygen saturation has reached the first oxygenation target, i.e., an arterial oxygen saturation of 94-96%, and simultaneously monitors the user's heart rate of 60-100 beats / min, respiratory rate of 12-20 / min, and arterial oxygen partial pressure of 60-80 mmHg, the central control unit 500 determines that the user is mildly hypoxic at the first oxygenation target. The central control unit 500 sets the second oxygenation target as the user's oxygenation target and controls the oxygen supply device 200 to supply oxygen to the user in the second oxygen supply mode. When the central control unit 500 monitors that the user's blood oxygen saturation has reached the second oxygenation target, i.e., 97%, and other physiological parameters are within the preset range, i.e., a heart rate of 60-100 beats / min, a respiratory rate of 12-20 / min, and an arterial oxygen partial pressure of 80-100 mmHg, the central control unit 500 determines that the user is in a normal physiological condition and controls the oxygen supply device 200 to stop supplying oxygen. The blood oxygen sensor, respiratory rate sensor, and blood gas analysis unit continue to monitor the user's condition.

[0085] After stopping the oxygen supply, if the central control unit 500 monitors that the user's blood oxygen saturation is maintained at the second oxygenation target, that is, at 97%, and other physiological parameters are within the preset range, that is, the heart rate is 60-100 beats / minute, the respiratory rate is 12-20 times / minute, and the arterial oxygen partial pressure is 80-100 mmHg, it is determined that the user is in a normal physiological condition, and the central control unit 500 does not turn on the oxygen supply device 200.

[0086] After oxygen supply is stopped, if the central control unit 500 monitors that the user's blood oxygen saturation is lower than the second oxygenation target, at 90-96%, and some physiological parameters fluctuate within the preset range, such as arterial oxygen partial pressure of 75-79 mmHg, heart rate of 60-100 beats / minute, and respiratory rate of 12-20 breaths / minute, the central control unit 500 determines that the user is suffering from mild hypoxia. The central control unit 500 controls the oxygen supply device 200 to activate and supply oxygen to the user in the third oxygen supply mode. Specifically, the third oxygen supply mode provides an oxygen concentration of 30%, with oxygen supplied to the user intermittently every half hour or every hour until all physiological parameters return to the preset range.

[0087] After oxygen supply is stopped, if the central control unit 500 detects that the user's blood oxygen saturation has dropped to 60-80%, the heart rate is 110-120 beats / minute, the respiratory rate is 25-30 breaths / minute, and the arterial oxygen partial pressure is 50-60 mmHg, the central control unit 500 determines that the user has experienced moderate hypoxia. The central control unit 500 controls the oxygen supply device 200 to start and supply oxygen to the user in the first oxygen supply mode until the venous oxygen partial pressure returns to a preset range. Specifically, the first oxygen supply mode is a continuous oxygen supply mode with an oxygen concentration of 45%.

[0088] After oxygen supply is stopped, if the central control unit 500 detects that the user's blood oxygen saturation is less than 60%, the heart rate is greater than 130 beats / minute, the respiratory rate is 30-40 breaths / minute, and the arterial oxygen partial pressure is 40-50 mmHg, the central control unit 500 determines that the user has severe hypoxia and controls the oxygen supply device 200 to start supplying oxygen to the user in the second oxygen supply mode until the venous oxygen partial pressure returns to a preset range. Specifically, the second oxygen supply mode is a continuous oxygen supply mode with an oxygen concentration of 50%.

[0089] The central control unit 500 controls the oxygen supply device 200 to supply oxygen to the user in a first oxygen supply mode, for example, a continuous oxygen supply mode with an oxygen concentration of 45%. When the central control unit 500 receives information indicating that the user's blood oxygen saturation has reached the first oxygenation target, i.e., 94-96%, the heart rate is 60-100 beats / min, the respiratory rate is 12-20 / min, and the arterial oxygen partial pressure exceeds 100 mmHg, the central control unit 500 determines that the patient is in an over-oxygenation state at the first oxygenation target. The central control unit 500 sets the third oxygenation target as the user's oxygenation target and controls the oxygen supply device 200 to supply oxygen to the user in the third oxygen supply mode. When the central control unit 500 monitors that the user's blood oxygen saturation has reached the third oxygenation target, i.e., 90-93%, and other physiological parameters are within the preset range, i.e., the heart rate is 60-100 beats / min, the respiratory rate is 12-20 / min, and the arterial oxygen partial pressure is 80-100 mmHg, the central control unit 500 determines that the user is in a normal physiological condition and controls the oxygen supply device 200 to stop supplying oxygen. The blood oxygen sensor, respiratory rate sensor, and blood gas analysis unit continue to monitor the user's condition.

[0090] After stopping the oxygen supply, if the central control unit 500 monitors that the user's blood oxygen saturation is maintained at 90-93%, and other physiological parameters are within the preset range, that is, the heart rate is 60-100 beats / min, the respiratory rate is 12-20 / min, and the arterial oxygen partial pressure is 80-100 mmHg, the central control unit 500 will not turn on the oxygen supply device 200.

[0091] After oxygen supply is stopped, if the central control unit 500 monitors that the user's blood oxygen saturation is between 80% and 89%, and some physiological parameters fluctuate within a preset range, such as an arterial oxygen partial pressure of 75-79 mmHg, a heart rate of 60-100 breaths / minute, and a respiratory rate of 12-20 breaths / minute, the central control unit 500 determines that the user is experiencing mild hypoxia. The central control unit 500 controls the oxygen supply device 200 to start and supply oxygen to the user in the third oxygen supply mode. Specifically, the third oxygen supply mode is an oxygen concentration of 30%, with intermittent oxygen supply every half hour or every hour.

[0092] After oxygen supply is stopped, if the central control unit 500 detects that the user's blood oxygen saturation has dropped to 60-80%, the heart rate is 110-120 beats / min, the respiratory rate is 25-30 / min, and the arterial oxygen partial pressure is 50-60 mmHg, the central control unit 500 determines that the user has experienced moderate hypoxia. The central control unit 500 controls the oxygen supply device 200 to start and supply oxygen to the user in the first oxygen supply mode until the venous oxygen partial pressure returns to a preset range. Specifically, the first oxygen supply mode is a continuous oxygen supply mode with an oxygen concentration of 45%.

[0093] After oxygen supply is stopped, if the central control unit 500 detects that the user's blood oxygen saturation is less than 60%, the heart rate is greater than 130 beats / minute, the respiratory rate is 30-40 / min, and the arterial oxygen partial pressure is 40-50 mmHg, the central control unit 500 determines that the user has severe hypoxia and controls the oxygen supply device 200 to start supplying oxygen to the user in the second oxygen supply mode until the venous oxygen partial pressure returns to a preset range. Specifically, the second oxygen supply mode is a continuous oxygen supply mode with an oxygen concentration of 50%.

[0094] The central control unit 500 controls the oxygen supply device 200 to supply oxygen to the user in a first oxygen supply mode, for example, a continuous oxygen supply mode with an oxygen concentration of 45%. When the central control unit 500 receives information indicating that the user's blood oxygen saturation has reached a first oxygenation target of 94-96%, and other physiological parameters are within a preset range, namely, a heart rate of 60-100 beats / min, a respiratory rate of 12-20 / min, and an arterial oxygen partial pressure of 80-100 mmHg, the central control unit 500 controls the oxygen supply device 200 to stop supplying oxygen, while the blood oxygen sensor, respiratory rate sensor, and blood gas analysis unit continue to monitor the user's condition.

[0095] After stopping the oxygen supply, if the central control unit 500 monitors that the user's blood oxygen saturation is maintained at 94-96%, and other physiological parameters are within the preset range, that is, the heart rate is 60-100 beats / min, the respiratory rate is 12-20 / min, and the arterial oxygen partial pressure is 80-100 mmHg, the central control unit 500 will not turn on the oxygen supply device 200.

[0096] After oxygen supply is stopped, if the central control unit 500 monitors that the user's blood oxygen saturation is between 80% and 89%, and some physiological parameters fluctuate within a preset range, such as an arterial oxygen partial pressure of 75-79 mmHg, a heart rate of 60-100 breaths / minute, and a respiratory rate of 12-20 breaths / minute, the central control unit 500 determines that the user is experiencing mild hypoxia. The central control unit 500 controls the oxygen supply device 200 to start and supply oxygen to the user in the third oxygen supply mode. Specifically, the third oxygen supply mode is an oxygen concentration of 30%, with intermittent oxygen supply every half hour or every hour.

[0097] After oxygen supply is stopped, if the central control unit 500 detects that the user's blood oxygen saturation has dropped to 60-80%, the heart rate is 110-120 beats / min, the respiratory rate is 25-30 / min, and the arterial oxygen partial pressure is 50-60 mmHg, the central control unit 500 determines that the user has experienced moderate hypoxia. The central control unit 500 controls the oxygen supply device 200 to start and supply oxygen to the user in the first oxygen supply mode until the venous oxygen partial pressure returns to a preset range. Specifically, the first oxygen supply mode is a continuous oxygen supply mode with an oxygen concentration of 45%.

[0098] After oxygen supply is stopped, if the central control unit 500 detects that the user's blood oxygen saturation is less than 60%, the heart rate is greater than 130 beats / minute, the respiratory rate is 30-40 / min, and the arterial oxygen partial pressure is 40-50 mmHg, the central control unit 500 determines that the user has severe hypoxia and controls the oxygen supply device 200 to start supplying oxygen to the user in the second oxygen supply mode until the venous oxygen partial pressure returns to a preset range. Specifically, the second oxygen supply mode is a continuous oxygen supply mode with an oxygen concentration of 50%.

[0099] Example 4

[0100] Currently, measuring arterial carbon dioxide partial pressure requires drawing a blood sample from the user and performing offline laboratory analysis. The information about arterial carbon dioxide provided by the blood sampling method is delayed and only intermittently available. In this embodiment, the change in arterial carbon dioxide partial pressure is determined by monitoring physiological parameters that change with the change in arterial carbon dioxide partial pressure, thereby achieving the purpose of continuously monitoring arterial carbon dioxide partial pressure. Among them, the physiological parameters that change with the change in arterial carbon dioxide partial pressure include at least respiratory rate, heart rate, blood pressure, etc. This embodiment uses monitoring respiratory rate and heart rate as an example to illustrate the operation of the respiratory detection system. In type II respiratory failure, the pulmonary ventilation and / or gas exchange function is severely impaired, resulting in an inability to carry out effective gas exchange, leading to hypoxia with or without carbon dioxide retention. Figure 3 is a schematic diagram of this embodiment.

[0101] When supplying oxygen, the oxygen flow rate is set to 3-4 L / min and the concentration is controlled within 30%. During the monitoring process, the following possible situations may exist: the user's respiratory rate and heart rate exceed the upper limit of the preset range but are less than the first preset value. The central control unit 500 determines that the user has slight hypoxia with carbon dioxide retention. The central control unit 500 controls the oxygen supply device 200 to supply oxygen in an oxygen mode opposite to the user's breathing phase to dilute the concentration of carbon dioxide exhaled by the user to increase the oxygen content.

[0102] For example, the first preset value is set to 30 respiratory times and 120 heart rates per minute.

[0103] When the user's respiratory rate is monitored to be 25 and the heart rate is 110 beats / minute, it is determined that there is slight carbon dioxide retention. The central control unit 500 controls the oxygen supply device 200 to supply oxygen to the user during a first period of time when the user is in the exhalation phase, and stops supplying oxygen during a second period of time when the user is in the inhalation phase, so that the arterial oxygen saturation reaches 88-92%.

[0104] Currently, continuous low-flow oxygen inhalation is typically used to alleviate the symptoms of carbon dioxide retention in type II respiratory failure. This embodiment uses intermittent oxygen supply based on the user's breathing phase to alleviate symptoms, and the oxygen flow rate can be set slightly higher than traditional oxygen flow rates. The advantages of this setting are: oxygen is supplied during the user's exhalation phase and stopped during the inhalation phase. The oxygen entering the mask uses its flow rate to blow the user's exhaled gas toward the exhalation holes 140 on both sides of the face, helping to better expel the exhaled gas accumulated in the mask. After entering the mask, the oxygen diffuses during the exhalation phase, and its concentration decreases. By the time the user reaches the inhalation phase, the final inhaled concentration is guaranteed not to be too high, minimizing the user's repeated inhalation of CO2 during the inhalation phase, ultimately achieving the goal of improving ventilation and adjusting the oxygenation level to a level approved by the doctor. Especially for users with shallow and rapid exhalation, during traditional oxygen therapy, the user's exhaled CO2 is re-inhaled into the body before it is exhaled, resulting in a poor oxygen therapy effect. The method provided in this embodiment can effectively solve this problem.

[0105] When the user's respiratory rate is detected to be 35 and the heart rate is 140 beats / minute, it is determined that the user has severe carbon dioxide retention. The central control unit 500 controls the oxygen supply mode of the oxygen supply device 200 to supply oxygen to the user during a third time period, which lasts from the late exhalation phase to the late inhalation phase, and to stop supplying oxygen during a fourth time period, which lasts from the late inhalation phase to the late exhalation phase, so that the arterial oxygen saturation reaches 88-92%. Preferably, the late inhalation phase refers to the time when the body's inhalation process is about to end and the body enters the exhalation phase. Preferably, the late exhalation phase refers to the time when the body's exhalation process is about to end and the body enters the inhalation phase.

[0106] The advantage of this embodiment is that it does not require multiple adjustments to the oxygen flow parameter or oxygen concentration. Instead, the final oxygen concentration is adjusted by the intermittent oxygen supply time period. Compared with the intermittent oxygen supply mode for mild carbon dioxide retention, the intermittent oxygen supply mode for severe carbon dioxide retention adopts a mode in which oxygen is supplied to the user during a third time period, which lasts from the late exhalation phase to the late inhalation phase, and oxygen supply is stopped during a fourth time period, which lasts from the late inhalation phase to the late exhalation phase. Since users with mild carbon dioxide retention and users with severe carbon dioxide retention have different oxygen requirements, in this embodiment, only one oxygen supply is provided. The oxygen supply needs to be turned on and off according to the user's breathing stage. There is no need to set parameters such as oxygen flow or oxygen concentration. Different oxygen supply modes can use the same oxygen flow parameter settings. For situations where less oxygen is needed, the mode of supplying oxygen in the exhalation stage and stopping oxygen supply in the inhalation stage is used to allow the oxygen entering the mask time to diffuse to reduce the user's final oxygen concentration. For situations where more oxygen is needed, oxygen supply is used in the late exhalation stage until it is stopped in the late inhalation stage to ensure the user's oxygen intake. In addition, according to the user's individual breathing differences, the respiratory detection system can set a breathing pattern suitable for the user to achieve better oxygen therapy effects.

[0107] In this embodiment, the respiratory phase refers to the phase during which the body performs a respiratory movement, including the exhalation phase, the inhalation phase, and the alternating respiratory phase. The exhalation phase refers to the period of time during which the body exhales. The inhalation phase refers to the period of time during which the body inhales. The alternating respiratory phase is the phase from the end of exhalation to the beginning of inhalation and the phase from the end of inhalation to the beginning of exhalation. A change in respiratory phase refers to the transition from one phase to another during the respiratory process, such as the transition from the exhalation phase to the inhalation phase.

[0108] Preferably, the second monitoring unit 400 is an electrocardiogram monitor. The electrocardiogram monitor can at least measure the user's electrocardiogram, heart rate, and respiratory rate and generate monitoring data. The second monitoring unit 400 is in communication with the central control unit 500.

[0109] Preferably, the central control unit 500 is provided with a calculation module 510. The second monitoring unit 400 obtains the user's monitoring data and sends it to the central control unit 500. The calculation module 510 analyzes the monitoring data to obtain the user's breathing stage and generates a corresponding breathing curve. Specifically, after the electrocardiogram is generated, the electrocardiogram monitor sends the data to the central control unit 500. The calculation module 510 of the central control unit 500 connects the values of the R wave in the electrocardiogram through a smooth curve to construct a breathing curve. The calculation module 510 determines the user's breathing stage based on the slope of the point in the breathing curve. For example, in the exhalation curve, if the calculation module 510 detects a slope of 0 at point A, it is judged that there is no breathing, which can indicate the end point of the exhalation stage or the end point of the inhalation stage; if the calculation module 510 detects a positive slope at point B, it is judged that the user is in the exhalation stage at the time point corresponding to point B; if the calculation module 510 detects a negative slope at point C, it is judged that the user is in the inhalation stage at the time point corresponding to point C.

[0110] According to a preferred embodiment, when the calculation module 510 monitors that the slope changes from positive to 0, it is determined that the exhalation phase ends and the exhalation phase end point is reached; when the calculation module 510 monitors that the slope changes from 0 to negative, it is determined that the inhalation phase begins and the inhalation phase starting point is reached; when the calculation module 510 monitors that the slope changes from negative to 0, it is determined that the inhalation phase ends and the inhalation phase end point is reached; when the calculation module 510 monitors that the slope changes from 0 to positive, it is determined that the exhalation phase begins and the exhalation phase starting point is reached.

[0111] Preferably, the breathing curve includes at least time information such as the exhalation phase, the inhalation phase, the end point of exhalation, the end point of inhalation, the late exhalation phase, and the late inhalation phase.

[0112] It should be noted that the above-mentioned specific embodiments are exemplary, and those skilled in the art can come up with various solutions inspired by the disclosure of the present invention, and these solutions also belong to the disclosure scope of the present invention and fall within the protection scope of the present invention. Those skilled in the art should understand that the present invention specification and its drawings are illustrative and do not constitute a limitation of the claims. The scope of protection of the present invention is defined by the claims and their equivalents. The present invention specification contains multiple inventive concepts, such as "preferably", "according to a preferred embodiment" or "optionally", all of which indicate that the corresponding paragraph discloses an independent concept, and the applicant reserves the right to file a divisional application based on each inventive concept. Throughout the text, the features guided by "preferably" are only an optional method and should not be understood as having to be set, so the applicant reserves the right to abandon or delete the relevant preferred features at any time.

Claims

1. A mask for use in a respiratory system, characterized in that: comprising a mask body (100), The mask body (100) includes a gas storage portion (110), an oxygen supply port (120) is provided below the gas storage portion (110), and the gas storage portion (110) is used to accommodate gas from the oxygen supply port (120) and / or gas exhaled by the user; The mask body (100) is provided with a detection port (130) for detecting the concentration of carbon dioxide exhaled by the user; The mask body (100) is provided with a plurality of exhalation holes (140), and the plurality of exhalation holes (140) are arranged on both sides of the midline of the mask body (100) with the midline of the mask body (100) as a dividing line; the exhalation holes (140) are arranged above the oxygen supply port (120) to release the user's exhaled gas.

2. The mask according to claim 1, wherein The detection port (130) includes a first detection port (131) and a second detection port (132); The first detection port (131) and the second detection port (132) are respectively arranged on both sides of the mask body (100) with the center line of the mask body (100) as a dividing line.

3. The mask according to claim 1 or 2, characterized in that The detection port (130) is provided with an adapter capable of being connected to an external catheter or monitoring equipment. The monitoring device is a sensor configured to detect the concentration or partial pressure of carbon dioxide.

4. The mask according to any one of claims 1 to 3, characterized in that: Exhalation hole centers (141) are respectively provided on both sides of the midline of the mask body (100); The exhalation holes (140) are respectively arranged on both sides of the midline of the mask body (100) in a manner of surrounding the center of the exhalation hole (141); wherein, a plurality of the exhalation holes (140) are arranged on the mask body (100) in a manner of surrounding the detection port (130); the center of the detection port (130) is located within the center of the exhalation hole (140).

5. The mask according to any one of claims 1 to 4, characterized in that: The mask body (100) is provided with a telescopic portion (150), and the telescopic portion (150) is arranged adjacent to the first detection port (131) and the second detection port (132) on both sides away from the center line of the mask body (100).

6. The mask according to any one of claims 1 to 5, characterized in that: Adhesive members (151) are provided on both sides of the telescopic portion (150) of the mask body (100) to keep the telescopic portion (150) at its original size; When the mask body (100) needs to be enlarged, the adhesive members (151) on both sides of the telescopic portion (150) are separated, so that the telescopic portion (150) is unfolded, thereby increasing the coverage area of the mask body (100); When the original size of the mask body (100) needs to be restored, the adhesive members (151) on both sides of the telescopic portion (150) are pressed together to change the telescopic portion (150) from an expanded state to a compressed state.

7. The mask according to any one of claims 1 to 6, characterized in that: The oxygen supply device (200) of the mask body (100) is in communication connection with the central control unit (500). The central control unit (500) controls the oxygen supply device (200) according to the user's medical advice information; The central control unit (500) controls the oxygen supply device (200) to perform oxygen therapy for the user in a first oxygen supply mode according to a first oxygenation target; the first oxygenation target is a theoretically optimal oxygenation target of the user.

8. The mask according to claim 7, characterized in that When it is determined that the user is mildly hypoxic at the first oxygenation target, the central control unit (500) sets the second oxygenation target as the user's oxygenation target; The central control unit (500) controls the oxygen supply device (200) to supply oxygen to the user in a second oxygen supply mode; the second oxygenation target is greater than the first oxygenation target.

9. The mask according to any one of claims 7 or 8, characterized in that When it is determined that the user is in an over-oxygenation state at the first oxygenation target, the central control unit (500) sets the third oxygenation target as the user's oxygenation target; The central control unit (500) controls the oxygen supply device (200) to supply oxygen to the user in a third oxygen supply mode, wherein the third oxygenation target is less than the first oxygenation target and is not less than 90%.

10. The mask according to any one of claims 7 to 9, characterized in that: The central control unit (500) is in communication with the first monitoring unit (300). When the physiological parameter acquired by the first monitoring unit (300) exceeds the upper limit of the preset range and is less than the first preset value, the central control unit (500) controls the oxygen supply device (200) to supply oxygen to the user during a first time period of the duration of the user being in the exhalation phase, stopping oxygen supply during a second time period of the duration of the user's inhalation phase, wherein the first preset value is a reference value of the physiological parameter for determining whether the user's arterial blood carbon dioxide partial pressure is slightly elevated or severely elevated; When the physiological parameter is greater than a first preset value, the central control unit (500) controls the oxygen supply device (200) to supply oxygen to the user in a third time period lasting from the late exhalation stage to the late inhalation stage, and stops supplying oxygen in a fourth time period lasting from the late inhalation stage to the late exhalation stage.

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