Atomizer for providing medicine mist based on respiration detection

Abstract

The utility model discloses an atomizer for providing medicine mist based on respiration detection, and belongs to the field of medical atomizers. The atomizer comprises an atomization working assembly, a breathing mask, a breathing sensor, a control module and a switching valve, the breathing sensor comprises a detection tube, the detection tube is provided with two tube openings at different positions, one tube opening is connected with the breathing mask, the other tube opening is communicated with the atmosphere, and the two tube openings are respectively provided with an airflow detection element. The airflow direction in the detection tube is determined according to the sequence of airflow detected by the two airflow detection elements, whether a patient exhales or inhales is accurately detected, the detection of the breathing state is rapid and accurate, the influence of the humidity and temperature of breathing air is small, and the working stability is good; meanwhile, the control module is used for controlling whether the mist outlet of the atomization working assembly generates medicine mist or not according to the expiration or inspiration state, medicine mist generated by inspiration of the patient and medicine mist generated by stopping expiration of the patient are accurately achieved, medicine waste is reduced, and the atomization treatment effect is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of medical nebulizers, and more particularly to a nebulizer that provides medicine mist based on breath detection. Background Art

[0002] In recent years, with the rise in respiratory diseases, more and more patients are using nebulized inhalation therapy, resulting in a significant increase in demand for medical nebulizers. Nebulizers atomize liquid medication into tiny particles, which are then inhaled by the patient into the respiratory tract and lungs. This allows for direct medication delivery to the treatment area, improving drug absorption and reducing side effects. For example, nebulizers are used to treat colds, fevers, coughs, asthma, sore throats, pharyngitis, rhinitis, bronchitis, and other conditions affecting the trachea, bronchi, alveoli, and chest cavity. Therefore, nebulized therapy is an important and effective treatment for respiratory diseases.

[0003] Existing nebulizers mainly include compression nebulizers, ultrasonic nebulizers, and mesh nebulizers. Compression nebulizers use compressed air to form a high-speed airflow through a small tube orifice. The negative pressure generated drives the liquid medicine to be sprayed onto the obstacle. Under the high-speed impact, the droplets splash around and turn into mist-like particles and are sprayed out from the outlet pipe. Ultrasonic nebulizers and mesh nebulizers use ultrasonic or piezoelectric vibrators to vibrate the liquid medicine to produce an atomization effect. The mist output method of these nebulizers is active mist delivery. In actual use, it is found that when patients wear masks to breathe in the atomized liquid medicine, part of the liquid medicine will be discharged from the exhalation hole of the mask during the patient's exhalation process, resulting in part of the liquid medicine being wasted. Moreover, because the nebulizer is constantly emitting mist, when the amount of mist output is greater than the amount inhaled by the patient, some of the liquid medicine will also overflow from the exhalation hole or the gap of the mask during the patient's inhalation process. This results in the actual atomization absorption rate of the liquid medicine being not high, which greatly reduces the treatment effect.

[0004] To address the above issues, some existing technologies have adopted a method of controlling the operation of the nebulizer through breath detection. The aim is to provide the drug mist when the patient inhales and stop the drug supply when the patient exhales, thereby reducing the loss and waste of the drug solution. Existing breath detection is mostly implemented using differential pressure sensors or flow sensors, but the practical application has the following drawbacks:

[0005] ① The differential pressure sensor uses a diaphragm structure to detect respiratory airflow and outputs a corresponding pressure signal through capacitance changes. It is often used in ventilators. However, when used in a nebulizer, due to the large amount of water vapor during the atomization process, water vapor can easily enter the differential pressure sensor, resulting in large detection errors or even damage.

[0006] ②The flow sensor is another type of sensor used in ventilators to monitor patient ventilation. It uses the principle of thermistor wire and uses the respiratory airflow to change the temperature of the thermistor wire to detect respiratory status and flow. Its application in nebulizers has defects similar to those of differential pressure sensors, especially the low accuracy of exhalation and inhalation detection.

[0007] It is precisely because the existing technology has large errors and lags in detecting patients' exhalation and inhalation that, despite the fact that there are many solutions to the problem of nebulizer liquid waste and reduced treatment effect, there are no nebulizer products with relevant functions on the market. Summary of the Invention

[0008] 1. Technical problems to be solved by the utility model

[0009] The purpose of the present invention is to overcome the above-mentioned defects of the existing nebulizers and provide a nebulizer that provides medicine mist based on respiratory detection. By adopting the technical solution of the present invention, the respiratory sensor determines the direction of the airflow in the detection tube by detecting the order of the airflow through two airflow detection elements, and then accurately detects whether the patient is exhaling or inhaling. The detection of the respiratory state is fast and accurate, and is less affected by the humidity and temperature of the breathing air, and has good working stability. At the same time, the control module is used to control whether the mist outlet of the nebulization working component generates medicine mist according to the exhalation or inhalation state, so that the patient accurately generates medicine mist when inhaling and stops generating medicine mist when exhaling, thereby reducing medicine waste and ensuring the effect of nebulization treatment.

[0010] 2. Technical solution

[0011] In order to achieve the above-mentioned purpose, the technical solution provided by the present utility model is:

[0012] The utility model provides an atomizer for providing medicine mist based on breathing detection, comprising

[0013] Atomization working component, used for atomizing the medicine;

[0014] A breathing mask connected to the atomization outlet of the atomization working component for exhalation and inhalation;

[0015] A breathing sensor is connected to the breathing mask and is used to detect the exhalation or inhalation state in the breathing mask;

[0016] A control module is connected to the respiratory sensor for processing a detection signal fed back by the respiratory sensor;

[0017] It also includes a switching valve controlled by the control module, which is used to control whether the mist outlet of the atomization working component produces medicine mist according to the exhalation or inhalation state detected by the respiratory sensor; wherein,

[0018] The respiratory sensor includes a detection tube having two pipe openings at different positions, one pipe opening is connected to the breathing mask, and the other pipe opening is connected to the atmosphere. An airflow detection element is respectively provided at the two pipe openings.

[0019] Furthermore, it also includes a host shell, and the electrical components, breathing sensor, control module and switching valve in the atomization working component are all integrated and installed in the host shell to form a whole.

[0020] Furthermore, it also includes a main body shell and an accessory shell, the electrical components in the atomization working assembly are installed in the main body shell, and the breathing sensor, control module and switching valve are all integrated and installed in the accessory shell to form a peripheral unit.

[0021] Furthermore, the breathing sensor and the breathing mask are connected through a hose or a three-way joint.

[0022] Furthermore, the atomization working component is a compression atomization mechanism, including an air compressor and an atomization cup, and the switching valve is provided between the air compressor and the atomization cup to control the on-off of the high-pressure gas delivered by the air compressor to the atomization cup.

[0023] Furthermore, the switching valve is a three-way solenoid valve or a two-way combination valve, and the three-way solenoid valve or the two-way combination valve has an air inlet and two air outlets, wherein the air inlet is connected to the air outlet of the air compressor, one air outlet is connected to the atomizer cup, and the other air outlet is connected to the atmosphere, and the breathing mask is connected to the mist outlet of the atomizer cup.

[0024] Furthermore, the air outlet of the three-way solenoid valve or the two-way combination valve connected to the atmosphere is also provided with a muffler.

[0025] Furthermore, the atomization working component is an ultrasonic atomization mechanism or a mesh atomization mechanism, and the switching valve is arranged at the mist outlet of the atomization cup or between the mist outlet of the atomization cup and the breathing mask.

[0026] Furthermore, the switching valve is a blade-type on-off valve, which is used to control the on-off of the mist outlet channel between the atomizing cup and the breathing mask.

[0027] Furthermore, a switching switch is included, which is used to control the switching of the nebulizer to a continuous misting mode of the breathing mask or an intermittent misting mode according to the breathing state.

[0028] 3. Beneficial effects

[0029] Compared with the existing known technologies, the technical solution provided by the present invention has the following beneficial effects:

[0030] (1) The utility model is a nebulizer that provides drug mist based on respiratory detection, which includes an atomizing working component, a respiratory mask, a respiratory sensor, a control module and a switching valve. The respiratory sensor determines the direction of the airflow in the detection tube by detecting the order of the airflow through two airflow detection elements, and then accurately detects whether the patient is exhaling or inhaling. The detection of the respiratory state is fast and accurate, and is less affected by the humidity and temperature of the respiratory air, and has good working stability. At the same time, the control module is used to control whether the mist outlet of the atomizing working component generates drug mist according to the exhalation or inhalation state, which accurately realizes that the patient inhales to generate drug mist and stops generating drug mist when exhaling, thereby reducing drug waste and ensuring the effect of atomization treatment.

[0031] (2) The utility model is a nebulizer that provides medicine mist based on breath detection. The electrical components, breath sensor, control module and switching valve in the nebulization working assembly are all integrated and installed in the main body shell to form a whole. The structure is simple and compact, and it is flexible and convenient to use.

[0032] (3) The utility model is a nebulizer that provides drug mist based on respiratory detection. The electrical components of the nebulization working assembly are installed in the main body shell, and the respiratory sensor, control module and switching valve are integrated and installed in the accessory shell to form a peripheral unit. It can provide a nebulizer peripheral component with a respiratory detection function. In conjunction with the existing ordinary nebulizer host, it can realize the function of providing drug mist according to the patient's respiratory status, meeting the need for upgrading the functions of existing stock nebulizers.

[0033] (4) The utility model is a nebulizer that provides medicine mist based on respiratory detection. Its respiratory sensor and respiratory mask are connected through a hose or a three-way connector. The hose can extend the distance between the respiratory sensor and the respiratory mask, making the respiratory mask more convenient to wear. When the three-way connector is used, the existing respiratory mask can be used, reducing the development investment cost of the respiratory mask.

[0034] (5) The utility model is a nebulizer that provides drug mist based on respiratory detection. Its atomization working component is a compression atomization mechanism, including an air compressor and an atomization cup. The switching valve is provided between the air compressor and the atomization cup to control the on-off of the high-pressure gas delivered by the air compressor to the atomization cup. The switching valve between the air compressor and the atomization cup is used to control the on-off of the high-pressure air. Compared with the method of directly controlling the start and stop of the air compressor, the action response speed of the switching valve is faster. In conjunction with the respiratory sensor, the switching of the drug mist delivery can be realized more accurately and timely, ensuring that the drug supply is stopped during exhalation and the drug mist is provided during inhalation;

[0035] (6) The utility model is a nebulizer that provides medicine mist based on respiratory detection, and its switching valve is a three-way solenoid valve or a two-way combination valve. The three-way solenoid valve or the two-way combination valve has an air inlet and two air outlets, wherein the air inlet is connected to the air outlet of the air compressor, one air outlet is connected to the nebulizer cup, and the other air outlet is connected to the atmosphere. The breathing mask is connected to the mist outlet of the nebulizer cup. The three-way solenoid valve or the two-way combination valve can connect the air compressor to the atmosphere during exhalation, reducing the impact of high-pressure gas on the air compressor sealing mechanism, switching valve and pipeline, thereby ensuring the working stability and service life of the nebulizer;

[0036] (7) The utility model is a nebulizer that provides medicine mist based on respiratory detection. The outlet of the three-way solenoid valve or two-way combination valve that is connected to the atmosphere is also provided with a muffler, which can effectively reduce the noise generated by the air outlet of the air compressor;

[0037] (8) The utility model is a nebulizer that provides drug mist based on respiratory detection. Its atomization working component is an ultrasonic atomization mechanism or a mesh atomization mechanism. The switching valve is arranged at the mist outlet of the atomization cup or between the mist outlet of the atomization cup and the breathing mask. Compared with the method of directly controlling the start and stop of the driving circuit of the ultrasonic atomization mechanism or the mesh atomization mechanism, the atomization cup can always keep the drug mist filled. The switching valve is used to control the on-off of the delivery channel, the response speed is fast, the drug mist delivery hysteresis is small, and the accuracy and timeliness of the drug mist delivery switching action are guaranteed;

[0038] (9) The utility model is a nebulizer that provides drug mist based on respiratory detection. Its switching valve is a blade-type on-off valve, which is used to control the on-off of the mist outlet channel between the nebulizer cup and the breathing mask. The ventilation valve hole of the blade-type on-off valve is larger, which can ensure the smoothness of drug mist delivery;

[0039] (10) The utility model provides a nebulizer for providing medicine mist based on breathing detection, which also includes a switching switch that can control the nebulizer to switch to a continuous misting mode of a breathing mask or an intermittent misting mode according to the breathing state, and can be flexibly selected according to the needs of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 This is a schematic structural diagram of a compression-type nebulizer for providing medicine mist based on breath detection according to Example 1 of the present utility model;

[0041] Figure 2 This is a schematic diagram of the atomization and breathing detection principle of the compression type atomizer of Example 1 of the present utility model;

[0042] Figure 3 A schematic diagram of a connection method between the atomizer cup and the breathing mask of the compression atomizer of Example 1 of the present utility model;

[0043] Figure 4 This is a schematic diagram of the three-dimensional structure of the respiratory sensor in the present utility model;

[0044] Figure 5 This is a schematic cross-sectional view of the respiratory sensor in the present invention;

[0045] Figure 6 This is a schematic structural diagram of a compression-type nebulizer for providing medicine mist based on breath detection according to Example 2 of the present utility model;

[0046] Figure 7 This is a schematic diagram of the disassembled parts of the compression-type atomizer according to Example 2 of the present utility model;

[0047] Figure 8 This is a schematic diagram of the assembly state of the peripheral components with a breathing detection function in Example 2 of the present utility model;

[0048] Figure 9 This is a schematic diagram of the connection principle of the peripheral component with a breathing detection function in Example 2 of the present utility model;

[0049] Figure 10 This is a schematic diagram of the overall structure of an ultrasonic atomizer for providing medicine mist based on breath detection according to Example 3 of the present utility model;

[0050] Figure 11 This is a schematic diagram of the disassembled structure of an ultrasonic atomizer for providing medicine mist based on breath detection according to Example 3 of the present utility model;

[0051] Figure 12 This is a schematic diagram of the assembly state of the peripheral components with a breathing detection function in Example 3 of the present utility model;

[0052] Figure 13 This is a perspective structural diagram of an external device with a breathing detection function in Example 3 of the present utility model;

[0053] Figure 14 This is a schematic diagram of the open state of the blade-type on-off valve in Example 3 of the present utility model;

[0054] Figure 15 This is a schematic diagram of the closed state of the blade-type on-off valve in Example 3 of the present utility model.

[0055] Explanation of the numbers in the schematic diagram:

[0056] 1. Breathing mask; 2. Breathing sensor; 2-1. Detection tube; 2-2. Nozzle; 2-3. Airflow detection element; 3. Control module; 4. Switching valve; 4-1. Stepper motor; 4-2. Transmission gear; 4-4a. Outer ring gear; 4-3. Fixed bracket; 4-4. Movable bracket; 4-5. Valve hole; 4-6. Blade; 5. Main body housing; 6. Hose; 7. T-joint; 7-1. Bypass interface; 8. Air compressor; 9. Atomizer cup; 10. First air pipe; 11. Conversion switch; 12. Start switch; 13. Second air pipe; 14. Muffler; 15. Accessory housing; 15-1. First interface; 15-2. Second interface; 16. Third air pipe. DETAILED DESCRIPTION

[0057] In order to further understand the content of the present invention, the present invention is described in detail with reference to the accompanying drawings.

[0058] Figures 1 to 3 Shown is the structural principle and accessories of the compression atomizer in the utility model; Figure 4 and Figure 5 What is shown is the structural principle diagram of the breathing sensor in this utility model; Figures 6 to 9 The figure shows another modified structure of the compression type atomizer in the present invention, that is, the breathing detection function exists in the form of an external component; Figures 10 to 15 Shown are the structural principle and accessories of the ultrasonic atomizer in the present utility model.

[0059] Referring to the above figure, the utility model is a nebulizer that provides medicine mist based on breathing detection, which mainly includes an atomization working component, a breathing mask 1, a breathing sensor 2, a control module 3 and a switching valve 4. Among them, the atomization working component is used to atomize the medicine, so that the medicine liquid becomes mist particles. Different types of nebulizers have different atomization principles of their atomization working components. For example, the atomization working component of a compression nebulizer uses high-speed airflow to drive the medicine liquid to impact and atomize, the atomization working component of an ultrasonic nebulizer uses ultrasonic oscillation to atomize the medicine liquid, and the atomization working component of a mesh nebulizer uses a piezoelectric vibrating piece and a mesh nozzle to atomize and spray the medicine liquid. The breathing mask 1 is connected to the mist outlet of the atomization working component and is worn on the patient's mouth and nose for exhalation and inhalation. The medicine mist can be inhaled by the patient after entering the breathing mask 1. The breathing sensor 2 is connected to the breathing mask 1 and is used to detect the exhalation or inhalation state in the breathing mask 1. The structural principle of the breathing sensor 2 is as follows Figure 4 and Figure 5As shown, it includes a detection tube 2-1 with two different nozzles 2-2: one nozzle 2-2 connects to the breathing mask 1, and the other nozzle 2-2 is open to the atmosphere. Each nozzle 2-2 is equipped with an airflow detection element 2-3. The airflow detection element 2-3 can be an ultrasonic probe or an infrared probe, which uses the propagation characteristics of ultrasound or infrared rays in airflow to detect airflow. The different positions of the two airflow detection elements 2-3 result in different respiratory airflow detection sequences. This airflow detection sequence can be used to determine whether the patient is currently exhaling or inhaling, thereby achieving respiratory detection. This respiratory detection is more accurate and rapid, and the airflow detection elements 2-3 are basically unaffected by respiratory humidity and temperature, resulting in high detection stability. A control module 3 is communicatively connected to the respiratory sensor 2 to process the detection signal fed back by the respiratory sensor 2. The control module 3 and the respiratory sensor 2 can be connected via circuit or wireless communication. The control module 3 can be a single-chip microcomputer controller, which can automatically control the operating state of the nebulizer based on the exhalation or inhalation state detected by the respiratory sensor 2. The switching valve 4 is controlled by the control module 3 and is used to control whether the atomization component's atomization outlet produces aerosol based on the exhalation or inhalation state detected by the breathing sensor 2. The installation position of the switching valve 4 varies depending on the principle of different nebulizer types. For example, for a compression nebulizer, the switching valve 4 can be located between the compressor and the atomization cup. For ultrasonic nebulizers and mesh nebulizers, the switching valve 4 can be located between the atomization cup and the breathing mask.

[0060] The utility model relates to a nebulizer which provides medicine mist based on breath detection. The breath sensor determines the direction of the airflow in the detection tube by detecting the order of the airflow through two airflow detection elements, and then accurately detects whether the patient is exhaling or inhaling. The detection of the breathing state is fast and accurate, and is less affected by the humidity and temperature of the breathing air, and has good working stability. At the same time, the control module is used to control whether the mist outlet of the nebulization working component generates medicine mist according to the exhalation or inhalation state, so that the patient accurately generates medicine mist when inhaling and stops generating medicine mist when exhaling, thereby reducing medicine waste and ensuring the effect of nebulization treatment.

[0061] The present invention will be further described below with reference to the embodiments.

[0062] [Example 1]

[0063] This embodiment is a compression atomizer. Figures 1 to 3As shown, the nebulizer for providing drug mist based on breath detection includes an atomization working component, a breathing mask 1, a breathing sensor 2, a control module 3 and a switching valve 4. The atomization working component is a compression atomization mechanism for atomizing the drug, including an air compressor 8 and an atomization cup 9. The air compressor 8 is composed of a motor and an air compression component. The switching valve 4 is arranged between the air compressor 8 and the atomization cup 9 to control the on-off of the high-pressure gas delivered by the air compressor 8 to the atomization cup 9. Specifically, the air outlet of the switching valve 4 is connected to the first air outlet. The tube 10 is connected to the air inlet of the nebulizer cup 9, and the air compressor 8 is connected to the air inlet of the switching valve 4 through the second air pipe 13. When the switching valve 4 is turned on, the air compressor 8 delivers high-pressure gas to the nebulizer cup 9, so that the liquid medicine in the nebulizer cup 9 is atomized. The breathing mask 1 is connected to the mist outlet of the nebulizer cup 9, and the atomized liquid medicine enters the breathing mask 1 for the patient to inhale. When the switching valve 4 blocks the high-pressure gas channel, there is no high-pressure gas in the nebulizer cup 9 for atomization, that is, the nebulizer cup 9 does not provide medicine mist to the breathing mask 1. The breathing sensor 2 is connected to the breathing mask 1 and is used to detect the exhalation or inhalation state in the breathing mask 1. Specifically, there is a hose 6 between the breathing mask 1 and the breathing sensor 2. The exhalation or inhalation airflow in the breathing mask 1 will partially pass through the breathing sensor 2 and be detected by the breathing sensor 2. Figure 4 and Figure 5 As shown, the respiratory sensor 2 includes a detection tube 2-1 having two different nozzles 2-2 on the detection tube 2-1. One nozzle 2-2 is connected to the respiratory mask 1, and the other nozzle 2-2 is open to the atmosphere. Each nozzle 2-2 is provided with an airflow detection element 2-3. Respiratory airflow can flow within the detection tube 2-1. Because the two airflow detection elements 2-3 are located in different detection positions, the detected airflow signals have a sequence. This sequence reflects the flow direction of the air path within the detection tube 2-1, that is, the changes in exhalation or inhalation. The control module 3 is in communication with the respiratory sensor 2. The two airflow detection elements 2-3 of the respiratory sensor 2 feed back the detection signals to the control module 3, which processes and analyzes the detection signals. The control module 3 is communicated with the switching valve 4 and is used to control the working state of the switching valve 4. The switching valve 4 controls whether the mist outlet of the atomization working component produces medicine mist according to the exhalation or inhalation state detected by the breathing sensor 2. When the breathing sensor 2 detects inhalation, the control module 3 controls the switching valve 4 to operate to connect the air compressor 8 and the atomization cup 9, so as to realize the atomization of the medicine liquid in the atomization cup 9 and provide it for the patient to inhale; when the breathing sensor 2 detects exhalation, the control module 3 controls the switching valve 4 to operate to disconnect the air compressor 8 and the atomization cup 9, stop atomization, reduce the waste of medicine liquid during exhalation, and achieve the effect of "providing medicine mist when the patient inhales and stopping the medicine supply when the patient exhales", thereby ensuring the atomization treatment effect.

[0064] Reference Figure 1As shown, the nebulizer of this embodiment that provides medicine mist based on respiratory detection also includes a main body shell 5, and the electrical components, respiratory sensor 2, control module 3 and switching valve 4 in the nebulization working assembly are all integrated and installed in the main body shell 5 to form a whole, which has a simple and compact structure and is flexible and convenient to use. For the compression nebulizer of this embodiment, the electrical components in the nebulization working assembly are mainly the air compressor 8 and the control circuit, and the above-mentioned control module 3 can be integrated with the compressor control circuit. The breathing mask 1, the nebulizer cup 9 and its pipelines are disposable items, and corresponding interfaces can be provided on the main body shell 5 to facilitate the connection between the nebulizer cup 9 and the switching valve 4, and the connection between the breathing mask 1 and the respiratory sensor 2. The above-mentioned respiratory sensor 2 and the breathing mask 1 can be connected through a hose 6. At this time, a connector needs to be added to the breathing mask 1 for connecting the respiratory sensor 2. Refer to Figure 3 As shown, a preferred solution is that the respiratory sensor 2 is connected to the respiratory mask 1 via a three-way joint 7. Specifically, the three-way joint 7 has an air inlet and outlet and a bypass interface 7-1. The mist outlet of the atomizer cup 9 is connected to the air inlet of the three-way joint 7, and the air outlet of the three-way joint 7 is connected to the air inlet of the respiratory mask 1. The bypass interface 7-1 is connected to the respiratory sensor 2 via a hose 6. In this way, the existing respiratory mask 1 and atomizer cup 9 can be used, reducing the development investment cost of the respiratory mask 1 and atomizer cup 9.

[0065] In this embodiment, the switching valve 4 is a three-way solenoid valve or a two-way combination valve, each of which has an air inlet and two air outlets, wherein the air inlet is connected to the air outlet of the air compressor 8, one air outlet is connected to the atomizing cup 9, and the other air outlet is connected to the atmosphere, and the breathing mask 1 is connected to the mist outlet of the atomizing cup 9. Figure 1 and Figure 2As shown, in this embodiment, the switching valve 4 is preferably a three-way solenoid valve. The three-way solenoid valve has an air inlet and two air outlets. The connection between the air inlet and the different air outlets is controlled by the on-off power of the three-way solenoid valve. When the switching valve 4 is a two-way combination valve, it has two on-off solenoid valves and a three-way pipe with one inlet and two outlets. The two on-off solenoid valves are respectively arranged at the air outlet pipe of the three-way pipe. The two on-off solenoid valves are always in one closed state and the other open state. The control of the two on-off solenoid valves realizes the connection between the air inlet of the switching valve 4 and the different air outlets, achieving the same function as the above-mentioned three-way solenoid valve. In the inhalation state, the three-way solenoid valve or the two-way combination valve connects the air compressor 8 to the nebulizer cup 9, atomizing the liquid medicine for inhalation by the patient; in the exhalation state, the three-way solenoid valve or the two-way combination valve connects the air compressor 8 to the atmosphere. In this way, air compressor 8 can be consistently in operation, with switching valve 4 controlling the flow of high-pressure air. Compared to directly controlling the start and stop of the air compressor, switching valve 4 responds more quickly. In conjunction with respiration sensor 2, the switching of drug mist delivery can be achieved more accurately and promptly, ensuring that drug delivery stops during exhalation and drug mist is delivered during inhalation. Furthermore, air compressor 8 can be connected to the atmosphere during exhalation, reducing the impact of high-pressure gas on the air compressor's sealing mechanism, switching valve 4, and piping, thereby ensuring the operational stability and service life of the nebulizer.

[0066] Further, if Figure 2 As shown, the outlet of the three-way solenoid valve or two-way combination valve connected to the atmosphere is also provided with a muffler 14. The muffler 14 can effectively reduce the noise generated by the exhaust of the air compressor 8, which is conducive to improving the noise of the atomization treatment environment. Of course, the muffler 14 is optional and can be omitted if the exhaust noise of the air compressor 8 is within an acceptable range.

[0067] return Figure 1 As shown, in the present embodiment, a conversion switch 11 is further included, and the conversion switch 11 is used to control the conversion of the nebulizer to the continuous mist outlet mode of the breathing mask 1 or the intermittent mist outlet mode according to the breathing state. Specifically, the conversion switch 11 can be set on the main body housing 5 and electrically connected to the control module 3, and can control the conversion of the nebulizer to the continuous mist outlet mode of the breathing mask 1 or the intermittent mist outlet mode according to the breathing state. It can be flexibly selected according to the needs of use to meet the needs of different patients. Of course, a start switch 12 and a power plug are also provided on the main body housing 5. The start switch 12 can be used to control the start and stop of the air compressor 8, and the power plug is used to power the nebulizer.

[0068] [Example 2]

[0069] This embodiment is a compression type nebulizer. The nebulizer of this embodiment provides medicine mist based on breath detection. Its basic structure and working principle are the same as those of embodiment 1, except that:

[0070] like Figures 6 to 9 As shown, the nebulizer of this embodiment has a main body shell 5 and an accessory shell 15, and the main body shell 5 and the accessory shell 15 are two independent shells, wherein the electrical components in the atomization working assembly are installed in the main body shell 5, that is, the air compressor 8 and the control circuit are installed in the main body shell 5, and the respiratory sensor 2, the control module 3 and the switching valve 4 are all integrated and installed in the accessory shell 15 to form a peripheral unit. In this way, a nebulizer peripheral component with a respiratory detection function is actually provided, which can realize the function of providing drug mist according to the patient's respiratory status in conjunction with the existing ordinary nebulizer host, and meet the needs of upgrading the functions of existing stock nebulizers. Ordinary compression nebulizers are mainly composed of an air compressor, a disposable nebulizer cup 9 and a respiratory mask 1. With the above-mentioned peripheral components, it is only necessary to connect the nebulizer host and the peripheral components, and connect the nebulizer cup 9 and the respiratory mask 1 to the peripheral components. For the specific connection structure, please refer to Figures 6 to 8 As shown, the air outlet of the air compressor 8 in the main body housing 5 is connected to the air inlet of the switching valve 4 in the accessory housing 15 via the second air pipe 13. The atomizer cup 9 is then connected to the air outlet of the switching valve 4 in the accessory housing 15 via the first air pipe 10. The breathing mask 1 is installed on the mist outlet of the atomizer cup 9 and is connected to the breathing sensor 2 in the accessory housing 15 via the hose 6. Similarly, if a muffler 14 is required, it can be placed inside the accessory housing 15.

[0071] like Figure 9 As shown, the structural principle of the nebulizer with peripheral components of this embodiment is basically the same as that of Example 1. In this embodiment, the switching switch 11 is located on the accessory housing 15, and the starting switch 12 is located on the main housing 5. At the same time, both the main housing 5 and the accessory housing 15 have plugs for power supply. During use, the air compressor 8 is turned on by starting the switch 12. After the patient wears the breathing mask 1, the patient's breathing state is detected by the breathing sensor 2. During the exhalation state, the switching valve 4 connects the air compressor 8 to the atmosphere, and the nebulizer cup 9 does not produce drug mist. During the inhalation state, the switching valve 4 connects the air compressor 8 to the nebulizer cup 9, and the high-pressure airflow causes the liquid medicine in the nebulizer cup 9 to be atomized and inhaled by the patient.

[0072] Figure 8 The figure shows the complete assembly state of the compression nebulizer peripheral component. The peripheral component can be used in conjunction with existing compression nebulizers, so that all existing compression nebulizers can realize the function of providing drug mist based on respiratory status, which is convenient for promotion and application.

[0073] [Example 3]

[0074] This embodiment is an ultrasonic nebulizer. The nebulizer of this embodiment provides medicine mist based on breath detection. Its basic structure and working principle are the same as those of embodiment 1, except that:

[0075] like Figure 10 and 11 As shown, in this embodiment, the atomization working component is an ultrasonic atomization mechanism and a corresponding atomization cup 9. The form of the ultrasonic atomization mechanism and the atomization cup 9 is the same as that of the existing ultrasonic atomizer. The cavity of the atomization cup 9 is relatively large. The liquid medicine is atomized in the atomization cup 9 by the ultrasonic atomization mechanism and diffused in the cavity of the atomization cup 9. There is a mist outlet at the top of the atomization cup 9. In this embodiment, the switching valve 4 is arranged at the mist outlet of the atomization cup 9 or between the mist outlet of the atomization cup 9 and the breathing mask 1. During operation, the atomization cup 9 is always kept full of medicine mist, and the atomization cup 9 and the breathing mask 1 are connected or disconnected by the switching valve 4. Compared with the method of directly controlling the start and stop of the drive circuit of the ultrasonic atomization mechanism, the use of the switching valve 4 to control the on-off of the delivery channel has a fast response speed and a small hysteresis in the medicine mist delivery, thereby ensuring the accuracy and timeliness of the switching action of the medicine mist delivery. During operation, the ultrasonic atomization mechanism is started to atomize the liquid medicine in the atomization cup 9. The patient wears the breathing mask 1 and uses the breathing sensor 2 to detect the patient's exhalation or inhalation state. When exhaling, the control module 3 controls the switching valve 4 to be disconnected. At this time, the medicine mist in the atomization cup 9 cannot enter the breathing mask 1. When inhaling, the control module 3 controls the switching valve 4 to be opened to realize the inhalation of the medicine mist in the atomization cup 9.

[0076] In this embodiment, in order to ensure smooth flow of the drug mist, the switching valve 4 is preferably a blade-type on-off valve, which is used to control the on-off of the mist outlet channel between the atomizing cup 9 and the breathing mask 1. The blade-type on-off valve uses a blade to open and close the valve hole, and the ventilation valve hole is larger, which can ensure the smoothness of the drug mist delivery and meet the mist outlet needs of the ultrasonic nebulizer. The blade-type on-off valve can adopt a single-blade rotating opening and closing structure, or a two-semicircular blade flip opening and closing structure (similar to the butterfly valve structure), or a multi-blade center retractable opening and closing structure (similar to the structural principle of the multi-petal shutter of a camera lens). Figure 14 and Figure 15 A specific multi-blade central expansion and closing structure is given in the specification, which is mainly composed of a drive assembly, a fixed bracket 4-3, a movable bracket 4-4 and a plurality of blades 4-6. A valve hole 4-5 is provided between the fixed bracket 4-3 and the movable bracket 4-4. A plurality of blades 4-6 are distributed circumferentially between the fixed bracket 4-3 and the movable bracket 4-4. A slideway is provided on the fixed bracket 4-3 and the movable bracket 4-4 to cooperate with the sliding pin on the corresponding blade 4-6. The relative rotation of the movable bracket 4-4 and the fixed bracket 4-3 can make each blade 4-6 move and rotate synchronously. Since adjacent blades 4-6 are fitted together, each blade 4-6 can move to the periphery of the valve hole 4-5 to open it (such as Figure 14 As shown), it can also be moved to the center of the valve hole 4-5 to close it (as shown Figure 15(as shown). The rotation of the movable bracket 4-4 is controlled by a drive assembly, which can be a stepper motor 4-1. The output end of the stepper motor 4-1 is provided with a transmission gear 4-2. An outer ring gear 4-4a is provided on the outer periphery of the movable bracket 4-4, and the transmission gear 4-2 is meshed with the outer ring gear 4-4a. Because the movable bracket 4-4 only rotates back and forth within a small range to control the opening or closing of the blade 4-6, the outer ring gear 4-4a can adopt a partial tooth profile. During operation, the control module 3 sends a command to the stepper motor 4-1 based on the breathing state detected by the breathing sensor 2, controlling the stepper motor 4-1 to rotate forward or reverse, thereby achieving on-off control of the central valve hole 4-5 of the switching valve 4.

[0077] In this embodiment, the respiratory sensor 2 and control module 3 can be integrated into the main body housing 5 of the ultrasonic nebulizer, and the switching valve 4 can be integrated into the mist outlet of the atomizer cup 9, thus forming a single unit. The respiratory mask 1 is disposable and is connected to the mist outlet of the atomizer cup 9 via a third air tube 16. Similarly, the respiratory mask 1 can be connected to the respiratory sensor 2 via a hose 6 and a three-way connector 7.

[0078] As a preferred embodiment, the respiratory sensor 2, control module 3, and switching valve 4 are integrated within the accessory housing 15, forming an ultrasonic nebulizer peripheral with a respiratory detection function. When used with an existing conventional ultrasonic nebulizer main unit, this device can deliver medication mist based on the patient's respiratory status, meeting the need for upgrading the functionality of existing nebulizers. Specifically, the accessory housing 15 has a first interface 15-1 and a second interface 15-2. The switching valve 4 is located between the first interface 15-1 and the second interface 15-2. The second interface 15-2 can be plugged into the mist outlet of the nebulizer cup 9. The third air pipe 16 is connected to the first interface 15-1.

[0079] Figure 12 The figure shows the complete assembly state of the ultrasonic nebulizer peripheral component. The peripheral component can be used in conjunction with an existing ultrasonic nebulizer, so that the existing ultrasonic nebulizer can also realize the function of providing drug mist based on the respiratory state, which is convenient for promotion and application. Figure 13 The figure shows a reusable peripheral component that integrates a respiratory sensor 2, a control module 3, and a switching valve 4. Similarly, a switch 11 can be provided on the main housing 5 or the accessory housing 15 to control the nebulizer's switching between a continuous misting mode and an intermittent misting mode based on the respiratory state.

[0080] [Example 4]

[0081] This embodiment is a mesh atomizer. The basic structure and working principle of the mesh atomizer are the same as those of the ultrasonic atomizer in Example 3, except that:

[0082] The atomization working components of the mesh atomizer are a mesh atomization mechanism and a corresponding medicine cup. The switching valve 4 is arranged at the mist outlet of the mesh atomizer or between the mist outlet of the mesh atomizer and the breathing mask 1. The switching valve 4 is used to connect or disconnect the mist outlet and the breathing mask 1. Compared with the method of directly controlling the start and stop of the driving circuit of the mesh atomizer mechanism, the use of the switching valve 4 to control the on-off of the delivery channel has a fast response speed and a small hysteresis in the medicine mist delivery, thereby ensuring the accuracy and timeliness of the medicine mist delivery switching action.

[0083] Of course, for the mesh nebulizer, the respiratory sensor 2, the control module 3 and the switching valve 4 can also be integrated into a peripheral component, which can be used in conjunction with the existing mesh nebulizer to provide the function of providing drug mist according to the patient's respiratory status.

[0084] As for the other structures and working principles of the mesh atomizer, they are the same as those in the prior art and will not be described in detail here.

[0085] The utility model relates to a nebulizer which provides medicine mist based on breath detection. The breath sensor determines the direction of the airflow in the detection tube by detecting the order of the airflow through two airflow detection elements, and then accurately detects whether the patient is exhaling or inhaling. The detection of the breathing state is fast and accurate, and is less affected by the temperature and humidity of the breathing air, and has good working stability. At the same time, the control module is used to control whether the mist outlet of the nebulization working component generates medicine mist according to the exhalation or inhalation state, so that the patient accurately generates medicine mist when inhaling and stops generating medicine mist when exhaling, thereby reducing medicine waste and ensuring the effect of nebulization treatment.

[0086] The above schematically describes the present invention and its embodiments, which is not intended to be limiting. The accompanying drawings illustrate only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by this and, without departing from the spirit of the present invention, uninventively designs structures and embodiments similar to this technical solution, they shall fall within the scope of protection of the present invention.

Claims

1. A nebulizer for providing drug mist based on breath detection, comprising Atomization working component, used for atomizing the medicine; A breathing mask (1) is connected to the mist outlet of the atomizing working component and is used for exhaling and inhaling; A breathing sensor (2) is connected to the breathing mask (1) and is used to detect the exhalation or inhalation state in the breathing mask (1); A control module (3) is connected to the respiratory sensor (2) for processing a detection signal fed back by the respiratory sensor (2); Its characteristics are: It also includes a switching valve (4) controlled by the control module (3) for controlling whether the mist outlet of the atomization working component generates medicine mist according to the exhalation or inhalation state detected by the breathing sensor (2); wherein, The respiratory sensor (2) comprises a detection tube (2-1), the detection tube (2-1) having two tube openings (2-2) at different positions, one tube opening (2-2) being connected to the respiratory mask (1), and the other tube opening (2-2) being communicated with the atmosphere, and an airflow detection element (2-3) being provided at each of the two tube openings (2-2).

2. The nebulizer for providing medicine mist based on breath detection according to claim 1, characterized in that: It also includes a main body housing (5), wherein the electrical components, the breathing sensor (2), the control module (3) and the switching valve (4) in the atomization working assembly are all integrated and installed in the main body housing (5) to form a whole.

3. The nebulizer for providing medicine mist based on breath detection according to claim 1, characterized in that: The invention also comprises a main body housing (5) and an accessory housing (15), wherein the electrical components of the atomization working assembly are installed in the main body housing (5), and the breathing sensor (2), the control module (3) and the switching valve (4) are all integrated and installed in the accessory housing (15) to form a peripheral unit.

4. The nebulizer for providing medicine mist based on breath detection according to claim 1, 2 or 3, characterized in that: The breathing sensor (2) and the breathing mask (1) are connected via a hose (6) or a three-way connector (7).

5. The nebulizer for providing medicine mist based on breath detection according to claim 1, 2 or 3, characterized in that: The atomization working assembly is a compression-type atomization mechanism, comprising an air compressor (8) and an atomization cup (9). The switching valve (4) is arranged between the air compressor (8) and the atomization cup (9) and is used to control the on-off of the high-pressure gas delivered by the air compressor (8) to the atomization cup (9).

6. The nebulizer for providing medicine mist based on breath detection according to claim 5, characterized in that: The switching valve (4) is a three-way solenoid valve or a two-way combination valve, each of which has an air inlet and two air outlets, wherein the air inlet is connected to the air outlet of the air compressor (8), one air outlet is connected to the atomizing cup (9), and the other air outlet is connected to the atmosphere, and the breathing mask (1) is connected to the mist outlet of the atomizing cup (9).

7. The nebulizer for providing medicine mist based on breath detection according to claim 6, characterized in that: The air outlet of the three-way solenoid valve or the two-way combination valve communicating with the atmosphere is also provided with a muffler (14).

8. The nebulizer for providing medicine mist based on breath detection according to claim 1, 2 or 3, characterized in that: The atomization working component is an ultrasonic atomization mechanism or a mesh atomization mechanism, and the switching valve (4) is arranged at the mist outlet of the atomization cup (9) or between the mist outlet of the atomization cup (9) and the breathing mask (1).

9. The nebulizer for providing medicine mist based on breath detection according to claim 8, characterized in that: The switching valve (4) is a blade-type on-off valve, used to control the on-off of the mist outlet channel between the atomizing cup (9) and the breathing mask (1).

10. The nebulizer for providing medicine mist based on breath detection according to claim 1, 2 or 3, characterized in that: It also includes a switching switch (11), which is used to control the switching of the nebulizer to a continuous misting mode of the breathing mask (1) or an intermittent misting mode according to the breathing state.

Images