Breathing detection air supply system

Abstract

The utility model discloses a breathing detection air supply system, it includes switching valve, breathing unit, breathing sensor, control module and air supply unit, switching valve has air outlet interface, detection interface and air supply interface, breathing unit is connected with air outlet interface, breathing sensor is connected with detection interface, air supply interface is connected with control module, air supply interface is connected with control module. The gas supply unit is connected with the gas supply connector, the control module is in communication connection with the switching valve and the respiration sensor, and in the inspiration state, the gas supply connector of the switching valve is communicated with the gas outlet connector, and meanwhile the gas outlet connector is disconnected with the detection connector; in the expiration state, the air outlet connector of the switching valve is communicated with the detection connector, and meanwhile the air supply connector is disconnected from the air outlet connector. According to the breathing detection air supply system, the air supply unit and the breathing sensor are connected with the breathing unit through the switching valve, the breathing unit only needs one connecting pipeline, the structure is simpler and more compact, the breathing unit is more flexible and convenient to wear and use, and meanwhile the use requirement of a nasal suction pipe can be met.

Description

Technical Field

[0001] This utility model relates to a gas inhalation system, and more specifically, to a respiratory detection and gas supply system capable of detecting respiratory status and supplying gas during inhalation. Background Technology

[0002] Inhaled gases are a common medical treatment or rehabilitation method, such as nebulization, oxygen therapy, and ventilators. Currently, the corresponding gas generation or supply equipment uses a continuous gas supply method, which is inhaled by wearing a mask or other accessories. Since human breathing is alternating, effective gases can only be inhaled during inhalation, while carbon dioxide is exhaled during exhalation. Therefore, the continuously supplied gas cannot be fully utilized during exhalation, resulting in a waste of effective gases.

[0003] To address the aforementioned issues, several existing technologies utilize respiratory detection to control inhaled gas supply. The aim is to provide gas during inhalation and stop gas supply during exhalation, thereby reducing the loss and waste of effective gas. Respiratory detection typically employs a respiratory sensor, while gas supply is usually achieved through a control valve. Both the respiratory sensor and the control valve are communicatively connected to a control module, which controls the valve based on the respiratory status detected by the sensor. Due to the need for flexibility in wearing accessories such as respirators and nasal cannulas, they are often connected via flexible tubing, maintaining a certain distance from the control valve. Currently, there are two main methods for installing respiratory sensors: one is to integrate the sensor into the breathing end and communicate wirelessly with the control module. This method is generally used in respirators, but wireless communication suffers from latency, which can easily lead to errors in gas supply control accuracy. The other method places the sensor at the control end, connecting it to the respirator via a detection tube. This method solves the communication latency problem but requires an additional detection tube, resulting in poorer wearing flexibility and convenience, especially in nasal cannula inhalation scenarios, where implementation is significantly more difficult. Summary of the Invention

[0004] 1. Technical problem to be solved by the utility model

[0005] The purpose of this invention is to overcome the above-mentioned shortcomings of the existing technology and provide a breathing detection gas supply system. With the technical solution of this invention, the gas supply unit and the breathing sensor are respectively connected to the breathing unit through a switching valve. The breathing unit only needs one connecting pipe, making the structure simpler and more compact. The breathing unit is more flexible and convenient to wear and use, and can also meet the needs of nasal cannula use.

[0006] 2. Technical Solution

[0007] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0008] This utility model discloses a respiratory detection and gas supply system, comprising a switching valve, a respiratory unit, a respiratory sensor, a control module, and a gas supply unit. The switching valve has an outlet port, a detection port, and a supply port. The respiratory unit is connected to the outlet port, the respiratory sensor is connected to the detection port, and the gas supply unit is connected to the supply port. The control module is communicatively connected to both the switching valve and the respiratory sensor, and is used to control the switching valve to perform the following actions based on the exhalation or inhalation state detected by the respiratory sensor:

[0009] During inhalation, the supply port and outlet port of the switching valve are connected, while the outlet port is disconnected from the detection port; during exhalation, the outlet port and detection port of the switching valve are connected, while the supply port and outlet port are disconnected.

[0010] Furthermore, the switching valve is a three-way solenoid valve.

[0011] Furthermore, the switching valve includes two on / off solenoid valves, one of which is located between the air outlet and the air supply port, and the other is located between the air outlet and the detection port.

[0012] Furthermore, the breathing sensor includes a detection tube with two ports in different positions. One port is used to connect to the aforementioned detection interface, and the other port is open to the atmosphere. Each of the two ports is equipped with an airflow detection element, which is an ultrasonic probe or an infrared probe.

[0013] Furthermore, the switching valve, breathing sensor, and control module are all integrated within the housing, forming an independent detection and control module.

[0014] Furthermore, the switching valve, breathing sensor, and control module are all integrated into the gas supply unit.

[0015] Furthermore, the gas supply unit is an oxygen generator or an oxygen cylinder supply device, and the breathing unit is a nasal cannula or a breathing mask.

[0016] Furthermore, when the gas supply unit is an oxygen generator, it also includes an oxygen storage tank located between the gas supply port of the switching valve and the oxygen outlet of the oxygen generator.

[0017] Furthermore, the gas supply unit is a ventilator, and the breathing unit is a breathing mask.

[0018] 3. Beneficial effects

[0019] Compared with existing known technologies, the technical solution provided by this utility model has the following beneficial effects:

[0020] (1) The present invention provides a respiratory detection and gas supply system, which includes a switching valve, a respiratory unit, a respiratory sensor, a control module and a gas supply unit. The switching valve has an outlet port, a detection port and a supply port. The respiratory unit is connected to the outlet port, the respiratory sensor is connected to the detection port, and the gas supply unit is connected to the supply port. The control module is communicatively connected to the switching valve and the respiratory sensor respectively. In the inhalation state, the supply port and outlet port of the switching valve are connected, and the outlet port and the detection port are disconnected. In the exhalation state, the outlet port and the detection port of the switching valve are connected, and the supply port and the outlet port are disconnected. With this respiratory detection and gas supply system, the gas supply unit and the respiratory sensor are connected to the respiratory unit through the switching valve. The respiratory unit only needs one connecting pipe, which makes the structure simpler and more compact. The respiratory unit is more flexible and convenient to wear and use, and can also meet the needs of nasal cannula use.

[0021] (2) The breathing detection gas supply system of this utility model has a switching valve that can be a three-way solenoid valve. It has a compact structure, stable and reliable operation, and fast switching action response speed, which ensures the accuracy and timeliness of gas delivery switching action. The switching valve can also include two on / off solenoid valves. One on / off solenoid valve is located between the gas outlet and the gas supply interface, and the other on / off solenoid valve is located between the gas outlet and the detection interface. Through the linkage control of the two on / off solenoid valves, the function of the three-way solenoid valve can also be realized, and the structure is simpler.

[0022] (3) A breathing detection air supply system of the present invention includes a breathing sensor comprising a detection tube with two openings at different positions. One opening is used to connect to the above-mentioned detection interface, and the other opening is open to the atmosphere. Each of the two openings is provided with an airflow detection element, which is an ultrasonic probe or an infrared probe. The breathing sensor determines the airflow direction in the detection tube by detecting the airflow in the order of the two airflow detection elements, thereby accurately detecting whether it is exhalation or inhalation. The detection of breathing status is fast and accurate. Moreover, the ultrasonic probe or infrared probe is less affected by the temperature and humidity of the breathing air, has good working stability, and the detection of breathing status is fast and accurate.

[0023] (4) The present invention provides a respiratory detection and gas supply system, in which the switching valve, respiratory sensor and control module are all integrated in the housing to form an independent detection and control module, which can be conveniently used in various existing gas inhalation systems, so that various gas inhalation systems can control the inhaled gas according to the respiratory state, and has universal applicability.

[0024] (5) The breathing detection gas supply system of this utility model has its switching valve, breathing sensor and control module all integrated in the gas supply unit, which makes the whole product simpler and can be used simply by connecting the breathing unit, making it more convenient to use.

[0025] (6) The present invention provides a respiratory detection gas supply system, wherein the gas supply unit is an oxygen generator or an oxygen cylinder supply device or a ventilator, so that existing oxygen inhalation devices, oxygen generators and ventilators can achieve the effect of providing gas during inhalation and stopping the supply of gas during exhalation, which can effectively reduce the waste of effective gases such as oxygen.

[0026] (7) The present invention provides a respiratory detection gas supply system. When the gas supply unit is an oxygen generator, it also includes an oxygen storage tank located between the gas supply interface of the switching valve and the oxygen outlet of the oxygen generator. The oxygen storage tank can store oxygen. In particular, for small flow oxygen generators that do not originally have an oxygen storage container, it can increase the maximum oxygen flow rate while ensuring the oxygen concentration. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the principle of a respiratory detection and air supply system according to the present invention;

[0028] Figure 2 This is a three-dimensional structural diagram of a breathing sensor in a breathing detection and air supply system according to the present invention.

[0029] Figure 3 This is a cross-sectional view of a respiratory sensor in a respiratory detection and air supply system according to the present invention.

[0030] Figure 4 This is a schematic diagram of a respiratory detection and air supply system using a nasal cannula according to the present invention.

[0031] Figure 5 This is a schematic diagram of the detection control module in a respiratory detection air supply system according to the present invention;

[0032] Figure 6 This is a schematic diagram of a respiratory detection and air supply system using a breathing mask according to the present invention.

[0033] Figure 7 This is a schematic diagram illustrating the application of a respiratory detection and air supply system of this utility model in an oxygen concentrator;

[0034] Figure 8 This is a schematic diagram illustrating the application of a respiratory detection and gas supply system of this utility model in an oxygen cylinder oxygen supply device.

[0035] Figure 9 This is a schematic diagram illustrating the application of a respiratory detection and air supply system of this utility model in a ventilator.

[0036] Explanation of the labels in the diagram:

[0037] 1. Switching valve; 1a. Outlet port; 1b. Detection port; 1c. Supply port; 2. Breathing unit; 2-1. Nasal cannula; 2-2. Breathing mask; 3. Breathing sensor; 3-1. Detection tube; 3-2. Tube opening; 3-3. Airflow detection element; 4. Control module; 5. Gas supply unit; 5a. Oxygen generator; 5b. Oxygen cylinder supply device; 5b1. Pressure reducing valve; 5b2. Humidifier bottle; 5c. Ventilator; 6. Main air tube; 7. Detection air tube; 8. Connecting air tube; 9. Housing; 10. Detection and control module. Detailed Implementation

[0038] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0039] Combination Figure 1 As shown, this utility model discloses a respiratory detection and gas supply system, comprising a switching valve 1, a respiratory unit 2, a respiratory sensor 3, a control module 4, and a gas supply unit 5. The switching valve 1 is mainly used to control the switching between the gas supply channel and the respiratory detection channel. The respiratory sensor 3 is used to detect the exhalation or inhalation state within the respiratory unit 2. The gas supply unit 5 is used to provide effective gas for inhalation. The switching valve 1 has an outlet port 1a, a detection port 1b, and a supply port 1c. The respiratory unit 2 is connected to the outlet port 1a, the respiratory sensor 3 is connected to the detection port 1b, and the gas supply unit 5 is connected to the supply port 1c. The control module 4 is communicatively connected to the switching valve 1 and the respiratory sensor 3, and is used to control the switching valve 1 to perform the following actions based on the exhalation or inhalation state detected by the respiratory sensor 3:

[0040] During inhalation, the supply port 1c of switching valve 1 is connected to the outlet port 1a, while the outlet port 1a is disconnected from the detection port 1b. At this time, the effective gas supplied by the gas supply unit 5 is delivered to the breathing unit 2 through the outlet port 1a for the user to inhale. During exhalation, the outlet port 1a and the detection port 1b of switching valve 1 are connected, while the supply port 1c is disconnected from the outlet port 1a. At this time, the gas supply channel of the gas supply unit 5 is closed, and the user's exhalation process is detected by the breathing sensor 3, which sends a switching control signal to the control module 4 at the end of exhalation. It should be noted that in the initial stage of use, the switching action of switching valve 1 can be controlled and adjusted by preset inhalation switching time and detection of exhalation stop time to achieve respiratory rate detection. The control module 4 ensures the accuracy of the switching valve 1's action control based on the user's respiratory rate.

[0041] Using the above-mentioned respiratory detection and gas supply system, the gas supply unit and the respiratory sensor are connected to the respiratory unit through switching valves. The respiratory unit only needs one connecting tube, making the structure simpler and more compact. The respiratory unit is more flexible and convenient to wear and use, and can also meet the needs of nasal cannula use.

[0042] In this invention, the breathing sensor 3 and the switching valve 1 are preferably connected to the control module 4 via signal lines to reduce signal transmission delay and improve the accuracy of gas supply control. The switching valve 1 is an electrically controlled valve, preferably an electromagnetically controlled valve. In one embodiment, the switching valve 1 is a three-way solenoid valve, which has a compact structure, stable and reliable operation, and fast switching response, ensuring the accuracy and timeliness of gas delivery switching. In another embodiment, the switching valve 1 may further include two on / off solenoid valves. One on / off solenoid valve is located between the outlet port 1a and the supply port 1c, and the other on / off solenoid valve is located between the outlet port 1a and the detection port 1b. The two on / off solenoid valves can be linked for control, i.e., one is open and the other is closed. The two on / off solenoid valves can achieve the same function as the three-way solenoid valve, with a simpler structure.

[0043] The breathing sensor 3 mentioned above can be an existing differential pressure sensor, flow sensor, etc. Figure 2 and Figure 3 The structural principle of a respiratory sensor 3 according to this utility model is shown. For example... Figure 2 and Figure 3 As shown, the respiratory sensor 3 includes a detection tube 3-1 with two ports 3-2 located at different positions. One port 3-2 is connected to the aforementioned detection interface 1b, while the other port 3-2 is open to the atmosphere. Each port 3-2 is equipped with an airflow detection element 3-3, which is either an ultrasonic or infrared probe. The airflow is detected by utilizing the propagation characteristics of ultrasound or infrared light in the airflow. Because the two airflow detection elements 3-3 are located at different positions, there is a change in the respiratory airflow detection sequence. This airflow detection sequence allows for the determination of whether the patient is currently exhaling or inhaling, thus enabling the detection of the patient's breathing. This respiratory detection is more accurate and faster, and the airflow detection element 3-3 is largely unaffected by respiratory humidity and temperature, exhibiting high detection stability. The respiratory sensor 3 can be connected to the switching valve 1 via a detection air tube 7.

[0044] In one embodiment, the switching valve 1, the breathing sensor 3, and the control module 4 are all integrated within the housing 9, forming an independent detection and control module 10 (e.g., ...). Figures 4 to 6This allows for convenient use in various existing gas inhalation systems, enabling all systems to control the inhaled gas according to the breathing state, thus possessing universal applicability. In another embodiment, the switching valve 1, breathing sensor 3, and control module 4 are all integrated into the gas supply unit 5 (e.g., Figure 7 and Figure 9 This design simplifies the entire product, requiring only the connection of the breathing unit for immediate use, making it more convenient. The aforementioned gas supply unit 5 can be an oxygen generator 5a, an oxygen cylinder supply device 5b, or a ventilator 5c, etc.

[0045] The present invention will be further described below with reference to the embodiments.

[0046] [Example 1]

[0047] Reference Figures 4 to 7 As shown, this embodiment is an application example of a respiratory detection and gas supply system in an oxygen concentrator. This respiratory detection and gas supply system includes a switching valve 1, a breathing unit 2, a breathing sensor 3, a control module 4, and a gas supply unit 5. The switching valve 1 has an outlet port 1a, a detection port 1b, and a supply port 1c. The breathing unit 2 is connected to the outlet port 1a, the breathing sensor 3 is connected to the detection port 1b, and the gas supply unit 5 is connected to the supply port 1c. The control module 4 is communicatively connected to the switching valve 1 and the breathing sensor 3, and is used to control the switching valve 1 to perform the following actions based on the exhalation or inhalation state detected by the breathing sensor 3: In the inhalation state, the supply port 1c of the switching valve 1 is connected to the outlet port 1a, while the outlet port 1a is disconnected from the detection port 1b; in the exhalation state, the outlet port 1a and the detection port 1b of the switching valve 1 are connected, while the supply port 1c is disconnected from the outlet port 1a.

[0048] Gas supply unit 5 is oxygen generator 5a, and breathing unit 2 can be nasal cannula 2-1 (e.g.) Figure 4 ), or a breathing mask 2-2 (such as Figure 6 The air supply port 1c of the switching valve 1 can be connected to the oxygen outlet of the oxygen concentrator 5a via the connecting tube 8. The nasal cannula 2-1 or the breathing mask 2-2 is connected to the air outlet 1a of the switching valve 1 via the main air tube 6. During use, the user wears the nasal cannula 2-1 or the breathing mask 2-2 and starts the oxygen concentrator 5a. The user's breathing status is detected by the breathing sensor 3 and fed back to the control module 4. The control module 4 then controls the switching valve 1 to close the oxygen supply channel during exhalation and open the oxygen supply channel during inhalation. In this way, the oxygen generated by the oxygen concentrator 5a during exhalation can be stored in its built-in oxygen storage container, which helps to improve the oxygen concentration and output of the oxygen concentrator.

[0049] In this embodiment, the switching valve 1, the breathing sensor 3, and the control module 4 can be integrated into the housing 9 to form an independent detection and control module 10, or they can be integrated into the oxygen concentrator 5a. Preferably, the switching valve 1, the breathing sensor 3, and the control module 4 are integrated into the oxygen concentrator 5a, thus forming an integrated oxygen concentrator product. During use, it is only necessary to connect the breathing unit 2 to the oxygen outlet port (i.e., the outlet port 1a of the switching valve 1) on the oxygen concentrator body via the main air pipe 6, making it simpler and more convenient to use.

[0050] For oxygen concentrators that do not originally have an oxygen storage container, the breathing detection and gas supply system of this embodiment further includes an oxygen storage tank (not shown in the figure) located between the gas supply port 1c of the switching valve 1 and the oxygen outlet of the oxygen concentrator 5a. The oxygen storage tank can be integrated into the aforementioned housing 9, or it can be independently connected to the outside of the housing 9 via a connecting pipe 8. The oxygen storage tank can store oxygen, especially for low-flow oxygen concentrators, increasing their maximum oxygen flow rate while ensuring the oxygen concentration.

[0051] [Example 2]

[0052] Reference Figure 4 , Figure 6 and Figure 8 As shown, this embodiment is an application example of a respiratory detection and supply system in an oxygen inhalation device. The working principle of the respiratory detection and supply system is the same as in Embodiment 1, except that: in this respiratory detection and supply system, the gas supply unit 5 is an oxygen cylinder supply device 5b, and the breathing unit 2 is a nasal cannula 2-1 or a breathing mask 2-2. During inhalation, the supply interface 1c is connected to the outlet interface 1a, and the oxygen in the oxygen cylinder supply device 5b is delivered to the nasal cannula 2-1 or the breathing mask 2-2 for the user to inhale; during exhalation, the outlet interface 1a is connected to the detection interface 1b, and the breathing sensor 3 detects the user's breathing status and stops the release of oxygen from the oxygen cylinder supply device 5b, reducing oxygen waste.

[0053] like Figure 8 As shown, the oxygen cylinder supply device 5b also has a pressure reducing valve 5b1 and a humidification bottle 5b2 at its outlet, which can reduce the pressure of the released oxygen and increase its humidity. In this embodiment, the switching valve 1, the breathing sensor 3, and the control module 4 are integrated into the housing 9 to form an independent detection and control module 10. When in use, the detection and control module 10 is installed on the oxygen cylinder supply device 5b and powered on.

[0054] [Example 3]

[0055] Reference Figure 6 and Figure 9As shown, this embodiment is an application example of a respiratory detection and gas supply system in a ventilator. The working principle of the respiratory detection and gas supply system is the same as in Embodiment 1, except that in this respiratory detection and gas supply system, the gas supply unit 5 is a ventilator 5c, and the breathing unit 2 is a breathing mask 2-2. Similar to the working process of Embodiment 2 above, during inhalation, the gas supply interface 1c and the gas outlet interface 1a are connected, and the gas in the ventilator 5c is delivered to the breathing mask 2-2; during exhalation, the gas outlet interface 1a and the detection interface 1b are connected, and the gas supply interface 1c and the gas outlet interface 1a are disconnected, stopping the gas supply.

[0056] Similar to Embodiment 1 above, the switching valve 1, breathing sensor 3 and control module 4 are all integrated into the ventilator 5c. The usage method is similar to that of existing ventilators, making it simpler and more convenient to use.

[0057] Of course, in addition to its application in the oxygen concentrator 5a, oxygen cylinder supply device 5b and ventilator 5c mentioned above, this respiratory detection and gas supply system can also be applied to other gas inhalation devices, such as medical central oxygen supply systems and medical nebulizers.

[0058] This invention discloses a respiratory detection and gas supply system. The gas supply unit and respiratory sensor are connected to the respiratory unit via switching valves. The respiratory unit requires only one connecting tube, resulting in a simpler and more compact structure. The respiratory unit is more flexible and convenient to wear and use, and it also accommodates nasal cannulas. This respiratory detection and gas supply system can control and adjust the switching valve's switching action by preset inspiratory switching time and detecting expiratory stop time, thereby achieving respiratory rate detection. The control module ensures the accuracy of the switching valve's action control based on the user's respiratory rate, guaranteeing the effect of supplying gas during inhalation and stopping gas supply during exhalation.

[0059] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A respiratory detection and air supply system, characterized in that: The system includes a switching valve (1), a breathing unit (2), a breathing sensor (3), a control module (4), and a gas supply unit (5). The switching valve (1) has an outlet port (1a), a detection port (1b), and a supply port (1c). The breathing unit (2) is connected to the outlet port (1a), the breathing sensor (3) is connected to the detection port (1b), and the gas supply unit (5) is connected to the supply port (1c). The control module (4) is communicatively connected to the switching valve (1) and the breathing sensor (3) respectively, and is used to control the switching valve (1) to perform the following actions according to the exhalation or inhalation state detected by the breathing sensor (3): During inhalation, the air supply port (1c) of the switching valve (1) is connected to the air outlet port (1a), while the air outlet port (1a) is disconnected from the detection port (1b); during exhalation, the air outlet port (1a) and the detection port (1b) of the switching valve (1) are connected, while the air supply port (1c) is disconnected from the air outlet port (1a).

2. The respiratory detection and gas supply system according to claim 1, characterized in that: The switching valve (1) is a three-way solenoid valve.

3. The respiratory detection and air supply system according to claim 1, characterized in that: The switching valve (1) includes two on / off solenoid valves. One on / off solenoid valve is located between the air outlet (1a) and the air supply port (1c), and the other on / off solenoid valve is located between the air outlet (1a) and the detection port (1b).

4. The respiratory detection and air supply system according to claim 1, characterized in that: The breathing sensor (3) includes a detection tube (3-1) with two ports (3-2) at different positions. One port (3-2) is used to connect to the detection interface (1b) mentioned above, and the other port (3-2) is open to the atmosphere. Each of the two ports (3-2) is provided with an airflow detection element (3-3), which is an ultrasonic probe or an infrared probe.

5. The respiratory detection and gas supply system according to claim 1, characterized in that: The switching valve (1), breathing sensor (3) and control module (4) are all integrated in the housing (9) to form an independent detection and control module (10).

6. The respiratory detection and gas supply system according to claim 1, characterized in that: The switching valve (1), breathing sensor (3) and control module (4) are all integrated in the gas supply unit (5).

7. The respiratory detection and gas supply system according to any one of claims 1 to 6, characterized in that: The gas supply unit (5) is an oxygen generator (5a) or an oxygen cylinder supply device (5b), and the breathing unit (2) is a nasal cannula (2-1) or a breathing mask (2-2).

8. The respiratory detection and gas supply system according to claim 7, characterized in that: When the gas supply unit (5) is an oxygen generator (5a), it also includes an oxygen storage tank located between the gas supply port (1c) of the switching valve (1) and the oxygen outlet of the oxygen generator (5a).

9. The respiratory detection and air supply system according to any one of claims 1 to 6, characterized in that: The gas supply unit (5) is a ventilator (5c), and the breathing unit (2) is a breathing mask (2-2).

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