External breathing assembly for controlling inhaled gas according to breathing state

Abstract

The utility model discloses an external breathing assembly for controlling inhaled air according to a breathing state. The external breathing assembly comprises a detection control unit and a breathing unit, the detection control unit comprises a breathing sensor, a switching valve and a control module, and the breathing sensor is used for detecting the expiration or inspiration state in the breathing unit; the switching valve is connected with the breathing unit, the switching valve is further provided with an air supply connector used for being externally connected with an air supply unit, and the control module is in communication connection with the breathing sensor and the switching valve and used for controlling the switching valve to act according to the expiration or inspiration state detected by the breathing sensor; by means of the external breathing assembly, the effects of providing gas during inspiration and stopping providing gas during expiration are achieved, various gas inspiration systems can control gas inspiration according to the breathing state, universal applicability is achieved, waste of effective gas is reduced, and the device is particularly suitable for existing atomizers, oxygen inhalation devices and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of gas suction devices, more specifically, a kind of external breathing assembly is controlled to inhale gas according to breathing state. BACKGROUND

[0002] Inhale gas to treat or recover is a common medical means, for example, atomization, oxygen inhalation and breathing machine etc..At present, the corresponding gas generation or supply equipment is all using the way of continuous gas supply, inhale by wearing mask and other accessories.Due to the alternation of human breathing, only in the process of inhaling can effective gas be inhaled, and carbon dioxide is discharged in the process of exhaling, so in the process of exhaling, actual gas provided continuously cannot be fully utilized, causing waste of atomized liquid or oxygen, especially in the process of atomization treatment, the absorption rate of atomized liquid is not high, resulting in that treatment effect is greatly discounted.

[0003] In order to solve the above problems, some technical solutions for controlling inhalation of gas by breathing detection also appear in the prior art, aiming to provide gas when inhaling and stop providing gas when exhaling, thereby reducing the loss and waste of effective gas.But this kind of breathing detection system is basically integrated in related equipment, such as atomizer, oxygen generator and breathing machine, etc., which has great use limitation. SUMMARY

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

[0005] The utility model aims at overcoming the above-mentioned shortcomings of the prior art, and provides an external breathing assembly for controlling inhalation of gas according to breathing state. By using the technical scheme of the utility model, the external breathing assembly can provide gas when inhaling and stop providing gas when exhaling, so that various gas inhalation systems can control inhalation of gas according to breathing state, have universal applicability, and reduce the waste of effective gas.

[0006] 2. Technical scheme

[0007] To achieve the above-mentioned purpose, the utility model provides the technical scheme as follows:

[0008] The external breathing assembly for controlling inhalation of gas according to breathing state of the utility model comprises a detection control unit and a breathing unit, the detection control unit comprises a breathing sensor, a switching valve and a control module, the breathing sensor is used to detect the exhaling or inhaling state in the breathing unit; the switching valve is connected with the breathing unit, the switching valve also has a gas supply interface for externally connecting a gas supply unit, the control module is communicatively connected with the breathing sensor and the switching valve, and is used to control the switching valve to perform the following actions according to the exhaling or inhaling state detected by the breathing sensor:

[0009] In the inhalation state, the switching valve connects the gas supply unit with the breathing unit; in the exhalation state, the switching valve disconnects the gas supply unit from the breathing unit.

[0010] Further, the detection control unit further comprises a housing, and the breathing sensor, the switching valve and the control module are integrated in the housing.

[0011] Further, the breathing sensor comprises a detection tube, and two position-different tube openings are arranged on the detection tube, one of the tube openings is used for directly or indirectly connecting the breathing unit, and the other tube opening is communicated with the atmosphere, and a gas flow detection element is arranged at each of the two tube openings.

[0012] Further, the switching valve further comprises a detection interface, the detection interface is connected with the breathing sensor, and the breathing unit is connected with the gas outlet interface of the switching valve; in the inhalation state, the gas supply interface of the switching valve is connected with the gas outlet interface, and the gas outlet interface is disconnected from the detection interface; in the exhalation state, the gas outlet interface of the switching valve is connected with the detection interface, and the gas supply interface is disconnected from the gas outlet interface.

[0013] Further, the gas supply unit is one of a compressed nebulizer main machine, an ultrasonic nebulizer main machine and a mesh nebulizer main machine, and the breathing unit comprises a breathing mask.

[0014] Further, when the gas supply unit is the compressed nebulizer main machine, the breathing unit further comprises a nebulizing cup connected with the breathing mask; the switching valve has a first valve path and a second valve path which are switched by the control module, the first valve path is arranged between the compressed nebulizer main machine and the high-pressure gas passage of the nebulizing cup, and the second valve path is arranged between the compressed nebulizer main machine and the atmosphere; in the inhalation state, the second valve path is disconnected, and the first valve path is connected; in the exhalation state, the first valve path is disconnected, and the second valve path is connected.

[0015] When the gas supply unit is the ultrasonic nebulizer main machine or the mesh nebulizer main machine, the switching valve is a vane type on-off valve.

[0016] Further, when the gas supply unit is the compressed nebulizer main machine, the gas outlet of the second valve path which is communicated with the atmosphere is further provided with a silencer.

[0017] Further, the gas supply unit is an oxygen cylinder assembly or an oxygen generator, and the breathing unit is a breathing mask or a nasal suction tube.

[0018] Further, when the gas supply unit is the oxygen generator, an oxygen storage tank is further arranged between the gas supply interface of the switching valve and the oxygen outlet of the oxygen generator.

[0019] Further, the gas supply unit is a central oxygen supply system, the gas supply interface of the switching valve is connected with a distributed oxygen-rich breathing interface of the central oxygen supply system, and the breathing unit is a breathing mask or a nasal cannula.

[0020] 3. Beneficial effects

[0021] Compared with the prior art, the technical scheme has the following beneficial effects:

[0022] (1) The external breathing assembly according to the breathing state for controlling inhaled gas comprises a detection control unit and a breathing unit, the detection control unit comprises a breathing sensor, a switching valve and a control module, the breathing sensor is used for detecting an exhalation or inhalation state in the breathing unit; the switching valve is connected with the breathing unit, the switching valve further has a gas supply interface for externally connecting a gas supply unit, the control module is in communication connection with the breathing sensor and the switching valve, and is used for controlling the switching valve to act according to the exhalation or inhalation state detected by the breathing sensor; the external breathing assembly is used for providing gas when inhaling and stopping providing gas when exhaling, so that various gas inhalation systems can control inhaled gas according to the breathing state, have universal applicability, effectively reduce waste of effective gas, and are especially suitable for existing atomizers and oxygen inhalation devices, and can effectively reduce waste of working gas such as atomized medicine and oxygen.

[0023] (2) The external breathing assembly according to the breathing state for controlling inhaled gas, the detection control unit further comprises a shell, the breathing sensor, the switching valve and the control module are integrated in the shell, so that the detection control unit has simple and compact structure, is easy to manufacture, and is flexible and convenient to use.

[0024] (3) The external breathing assembly according to the breathing state for controlling inhaled gas, the breathing sensor comprises a detection tube, the detection tube has two position-different tube openings, one of the tube openings is used for directly or indirectly connecting the breathing unit, the other tube opening is communicated with the atmosphere, and one airflow detection element is arranged at each of the two tube openings; the breathing sensor determines the airflow direction in the detection tube by detecting the sequence of airflows through the two airflow detection elements, and then accurately detects whether the patient exhales or inhales, the detection of the breathing state is fast and accurate, the breathing air has little influence on the detection, and the working stability is good.

[0025] (4) The external breathing assembly for controlling inhaled gas according to a breathing state has a switching valve further provided with a detection interface, the detection interface is connected with a breathing sensor, and the breathing unit is connected with a gas outlet interface of the switching valve; in the inhaling state, the gas supply interface of the switching valve is in conduction with the gas outlet interface, and the gas outlet interface is disconnected with the detection interface; in the exhaling state, the gas outlet interface and the detection interface of the switching valve are in conduction, and the gas supply interface is disconnected with the gas outlet interface; the pipeline connection structure is adopted, only one main gas pipe is needed to connect the breathing unit, the structure is more simple and compact, and the external breathing assembly is especially suitable for the mode of inhaling through a nasal pipe, and is more flexible and convenient to use;

[0026] (5) The external breathing assembly for controlling inhaled gas according to a breathing state, wherein the gas supply unit can be a compression type atomizer host, an ultrasonic type atomizer host, a mesh type atomizer host, an oxygen cylinder assembly, an oxygen generator and a central oxygen supply system, and can be widely used in existing inhaled gas generation or supply equipment such as an atomizer and an oxygen inhalation device, so that the existing equipment can also have the function of controlling inhaled gas according to a breathing state.

[0027] (6) The external breathing assembly for controlling inhaled gas according to a breathing state, when the gas supply unit is a compression type atomizer host, the switching valve has a first valve path and a second valve path controlled by a control module, wherein the second valve path is communicated with the atmosphere, so that the impact of high-pressure gas on the air compressor sealing mechanism, the switching valve and the pipeline in the exhaling state is reduced, the working stability and service life of the compression type atomizer are ensured, and in addition, the gas outlet of the second valve path communicated with the atmosphere is also provided with a silencer, so that the noise generated by the air compressor outlet can be effectively reduced.

[0028] (7) The external breathing assembly for controlling inhaled gas according to a breathing state, when the gas supply unit is an ultrasonic type atomizer host or a mesh type atomizer host, the switching valve is a vane type on-off valve, the air valve hole of the vane type on-off valve is larger, and the smoothness of the drug mist delivery can be ensured.

[0029] (8) The external breathing assembly for controlling inhaled gas according to a breathing state, wherein the gas supply unit can also be an oxygen cylinder assembly, an oxygen generator or a central oxygen supply system, the function of controlling inhaled oxygen according to a breathing state is realized in the existing oxygen inhalation device, and the waste of oxygen is reduced; and when the gas supply unit is an oxygen generator, the external breathing assembly further comprises an oxygen storage tank arranged between the gas supply interface of the switching valve and the oxygen outlet of the oxygen generator, the oxygen storage tank can store oxygen, and especially for a small-flow oxygen generator without an oxygen storage container, the maximum oxygen flow can be improved under the condition of ensuring the oxygen concentration. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1The utility model discloses a kind of according to respiratory state control inhaled gas's external respiratory subassembly of embodiment 1 of the stereoscopic structure schematic diagram of the utility model embodiment 1;

[0031] Figure 2 The utility model discloses a kind of according to respiratory state control inhaled gas's external respiratory subassembly of the stereoscopic structure schematic diagram of the utility model in the breathing sensor;

[0032] Figure 3 The utility model discloses a kind of according to respiratory state control inhaled gas's external respiratory subassembly of the sectional structure schematic diagram of the utility model in the breathing sensor;

[0033] Figure 4 The utility model discloses a kind of according to respiratory state control inhaled gas's external respiratory subassembly of embodiment 1 in the application schematic diagram of compression type atomizer of the utility model embodiment 1;

[0034] Figure 5 The utility model discloses a kind of according to respiratory state control inhaled gas's external respiratory subassembly of the composition schematic diagram of breathing unit when the utility model is applied in compression type atomizer;

[0035] Figure 6 The utility model discloses a kind of according to respiratory state control inhaled gas's external respiratory subassembly of embodiment 2 of the stereoscopic structure schematic diagram of the utility model embodiment 2;

[0036] Figure 7 The utility model discloses a kind of according to respiratory state control inhaled gas's external respiratory subassembly of the structure schematic diagram of detection control unit in the utility model embodiment 2;

[0037] Figure 8 The utility model discloses a kind of according to respiratory state control inhaled gas's external respiratory subassembly of the opening state schematic diagram of vane type on-off valve in the utility model embodiment 2;

[0038] Figure 9 The utility model discloses a kind of according to respiratory state control inhaled gas's external respiratory subassembly of the closing state schematic diagram of vane type on-off valve in the utility model embodiment 2;

[0039] Figure 10 The utility model discloses a kind of according to respiratory state control inhaled gas's external respiratory subassembly of embodiment 2 in the application schematic diagram of ultrasonic atomizer of the utility model embodiment 2;

[0040] Figure 11 The utility model discloses a kind of according to respiratory state control inhaled gas's external respiratory subassembly of embodiment 3 of the stereoscopic structure schematic diagram of the utility model embodiment 3;

[0041] Figure 12 The utility model discloses a kind of according to respiratory state control inhaled gas's external respiratory subassembly of embodiment 3 in the application schematic diagram of oxygen inhalation device of the utility model embodiment 3;

[0042] Figure 13 The utility model discloses a kind of according to respiratory state control inhaled gas's external respiratory subassembly of embodiment 4 of the pipeline connection principle schematic diagram of the utility model embodiment 4;

[0043] Figure 14The utility model discloses a kind of according to respiratory state control inhaled gas's external respiratory subassembly's three-dimensional structure schematic view of embodiment 4 of the utility model;

[0044] Figure 15 It is the perspective structure schematic view of detection control unit in the utility model embodiment 4;

[0045] Figure 16 It is the application schematic view of a kind of according to respiratory state control inhaled gas's external respiratory subassembly in the oxygen generator of the utility model embodiment 4;

[0046] Figure 17 The utility model discloses a kind of according to respiratory state control inhaled gas's external respiratory subassembly's three-dimensional structure schematic view of embodiment 5 of the utility model;

[0047] Figure 18 It is the application schematic view of a kind of according to respiratory state control inhaled gas's external respiratory subassembly in the oxygen generator of the utility model embodiment 5.

[0048] The label explanation in schematic view is as follows:

[0049] 1, detection control unit;1-1, shell;1-1a, gas supply interface;1-1b, gas outlet interface;1-2, respiratory sensor;1-2-1, detection tube;1-2-2, pipe opening;1-2-3, air flow detection element;1-3, switching valve;1-3a, detection interface;1-3-1, stepper motor;1-3-2, transmission gear;1-3-3, fixed support;1-3-4, movable support;1-3-4a, external gear ring;1-3-5, valve hole;1-3-6, blade;1-4, control module;1-5, connecting pipe;2, respiratory unit;2-1, respiratory mask;2-2, tee joint;2-2a, bypass interface;2-3, atomizing cup;2-4, nasal suction tube;3, main gas pipe;4, detection gas pipe;5, gas supply unit;5a, compression type atomizer host computer;5b, ultrasonic atomizer host computer;5c, oxygen cylinder assembly;5c1, pressure reducing valve;5c2, humidification bottle;5d, oxygen generator;6, connecting gas pipe. DETAILED DESCRIPTION

[0050] To further understand the contents of the utility model, the utility model is described in detail in conjunction with the drawings.

[0051] Figure 1 、 Figure 6 、 Figure 11 、 Figure 14 and Figure 17The external breathing assembly capable of controlling inhaled gas according to a breathing state comprises a detection control unit 1 and a breathing unit 2, the detection control unit 1 comprises a breathing sensor 1-2, a switching valve 1-3 and a control module 1-4, the breathing sensor 1-2 is used for detecting an exhalation or inhalation state in the breathing unit 2, the switching valve 1-3 is connected with the breathing unit 2, the switching valve 1-3 also has a gas supply interface 1-1a used for externally connecting a gas supply unit 5, the gas supply unit 5 is connected through the gas supply interface 1-1a during use, and the detection control unit 1 is powered on and operated at the same time, the control module 1-4 is in communication connection with the breathing sensor 1-2 and the switching valve 1-3 respectively, and is used for controlling the switching valve 1-3 to perform the following actions according to the exhalation or inhalation state detected by the breathing sensor 1-2.

[0052] In the inhalation state, the switching valve 1-3 connects the gas supply unit 5 with the breathing unit 2, and in the exhalation state, the switching valve 1-3 disconnects the gas supply unit 5 from the breathing unit 2.

[0053] The external breathing assembly capable of controlling inhaled gas according to a breathing state is provided, various gas inhalation systems cooperating with the external breathing assembly can realize the function of providing gas during inhalation and stopping providing gas during exhalation, has universal applicability and reduces waste of effective gas. The gas supply unit 5 can be an atomizer, an oxygen inhalation device and the like, and has wide application prospects.

[0054] As an external installation and use breathing assembly, the detection control unit 1 further comprises a shell 1-1, the breathing sensor 1-2, the switching valve 1-3 and the control module 1-4 are integrated in the shell 1-1, so that the detection control unit has simple and compact structure, is easy to manufacture and is flexible and convenient to use. A start switch and a power line can be arranged on the shell 1-1 and are used for starting and stopping control and power supply of the external breathing assembly. Of course, a storage battery can be arranged in the shell 1-1, and the storage battery is used for realizing power supply of the internal breathing sensor 1-2, the switching valve 1-3 and the control module 1-4.

[0055] The breathing sensor 1-2 can adopt an existing differential pressure sensor, a flow sensor and the like. Figure 2 and Figure 3The structure principle of the respiration sensor 1-2 in the embodiment is shown. The respiration sensor 1-2 comprises a detection tube 1-2-1, the detection tube 1-2-1 is provided with two position-different tube openings 1-2-2, one tube opening 1-2-2 is used for directly or indirectly connecting a respiration unit 2, the other tube opening 1-2-2 is communicated with the atmosphere, and each of the two tube openings 1-2-2 is provided with an airflow detection element 1-2-3. The airflow detection element 1-2-3 can be an ultrasonic probe or an infrared probe, the airflow flow is detected by using the propagation characteristics of ultrasonic waves or infrared rays in the airflow, the positions of the two airflow detection elements 1-2-3 are different, therefore, the change of the respiration airflow detection sequence exists, the current exhalation or inhalation can be judged through the airflow detection sequence, and then the detection of the patient's respiration is realized. The respiration detection is more accurate and fast, and the airflow detection element 1-2-3 is basically not affected by the respiration humidity and temperature, and the detection stability is high.

[0056] In the utility model, the respiration sensor 1-2 can adopt two different connection modes in the external respiration assembly. One is that the respiration sensor 1-2 is directly connected with the respiration unit 2, and the other is that the respiration sensor 1-2 is indirectly connected with the respiration unit 2 through the switching valve 1-3. Figure 1 、 Figure 6 and Figure 11 Adopting the first connection mode, the respiration sensor 1-2 is communicated with the respiration unit 2 through the detection air tube 4, and the switching valve 1-3 is connected with the respiration unit 2 through the main air tube 3. The advantage of this mode is that the operation of the respiration sensor 1-2 is relatively independent, the respiration state can be accurately detected, and the distance between the respiration unit 2 and the detection control unit 1 can be lengthened, so that the wearing and using of the respiration unit 2 are more flexible and convenient, and the mode is especially suitable for the respiration unit adopting the respiration mask, such as the atomizer. Figure 14 and Figure 17 Adopting the second connection mode, the specific connection relationship can be referred to Figure 13As shown, the switching valve 1-3 also has a detection interface 1-3a, which is connected to the respiratory sensor 1-2. The breathing unit 2 is connected to the outlet interface 1-1b of the switching valve 1-3. During inhalation, the supply interface 1-1a and outlet interface 1-1b of the switching valve 1-3 are connected to supply air to the breathing unit 2, while the outlet interface 1-1b is disconnected from the detection interface 1-3a. During exhalation, the outlet interface 1-1b and detection interface 1-3a of the switching valve 1-3 are connected to detect the exhalation state and the exhalation stop time, while the supply interface 1-1a is disconnected from the outlet interface 1-1b to reduce the waste of effective gas. This method can control and adjust the switching action of the switching valve 1-3 by preset inhalation switching time and detecting exhalation stop time, thereby detecting the respiratory rate and ensuring the accuracy of the switching valve 1-3's action control. The advantage is that only one main airway 3 is needed to connect to the breathing unit 2, making the structure simpler and more compact. It is especially suitable for breathing units that use nasal cannulas, making it more flexible and convenient to use.

[0057] The present invention will be further described below with reference to the embodiments.

[0058] [Example 1]

[0059] This embodiment is an example of the application of an external breathing assembly in a compressor nebulizer. For example... Figures 1 to 4 As shown, this embodiment of an external breathing assembly that controls inhaled gas based on breathing state includes a detection control unit 1 and a breathing unit 2. The detection control unit 1 includes a breathing sensor 1-2, a switching valve 1-3, and a control module 1-4. The breathing sensor 1-2 is connected to the breathing unit 2 and is used to detect the exhalation or inhalation state within the breathing unit 2. The switching valve 1-3 is connected to the breathing unit 2 and also has a gas supply interface 1-1a for externally connecting a gas supply unit 5. The gas supply unit 5 is a compressor nebulizer host 5a. The gas supply interface 1-1a can be connected to the gas interface of the compressor nebulizer host 5a through a pipe. The control module 1-4 is communicatively connected to the breathing sensor 1-2 and the switching valve 1-3 respectively, and is used to control the switching valve 1-3 to perform the following actions based on the exhalation or inhalation state detected by the breathing sensor 1-2: In the inhalation state, the switching valve 1-3 connects the gas supply unit 5 to the breathing unit 2; in the exhalation state, the switching valve 1-3 disconnects the gas supply unit 5 from the breathing unit 2. The aforementioned breathing sensor 1-2, switching valve 1-3, and control module 1-4 are integrated into the housing 1-1 to form a single module, making the detection and control unit simple, compact, easy to manufacture, and flexible and convenient to use.

[0060] In the embodiment, the breathing unit 2 comprises a breathing mask 2-1 and an atomizing cup 2-3 connected with the breathing mask 2-1, the compressed atomizer host 5a is used to provide compressed air, and the switching valve 1-3 is located between the compressed atomizer host 5a and the gas channel of the atomizing cup 2-3, and is used to control the on-off of the high-pressure gas delivered by the compressed atomizer host 5a to the atomizing cup 2-3. Specifically, the breathing sensor 1-2 is connected with the breathing mask 2-1 through the detection gas pipe 4, and the switching valve 1-3 is connected with the atomizing cup 2-3 through the main gas pipe 3. When the switching valve 1-3 is turned on, the compressed atomizer host 5a delivers high-pressure gas into the atomizing cup 2-3, so that the liquid medicine in the atomizing cup 2-3 is atomized, the breathing mask 2-1 is connected with the mist outlet of the atomizing cup 2-3, and the atomized liquid medicine enters the breathing mask 2-1 for the patient to inhale; when the switching valve 1-3 blocks the high-pressure gas channel, there is no high-pressure gas in the atomizing cup 2-3 for atomization at this time, that is, the atomizing cup 2-3 does not provide the atomized liquid medicine to the breathing mask 2-1 at this time. Referring to Figure 5 As shown, the breathing sensor 1-2 is connected with the breathing mask 2-1 through the three-way joint 2-2, specifically, the three-way joint 2-2 has an inlet and outlet gas port and a bypass interface 2-2a, the mist outlet of the atomizing cup 2-3 is connected with the inlet gas port of the three-way joint 2-2, the outlet gas port of the three-way joint 2-2 is connected with the inlet gas port of the breathing mask 2-1, and the bypass interface 2-2a is connected with the breathing sensor 1-2 through the detection gas pipe 4. In this way, the existing breathing mask 2-1 and atomizing cup 2-3 can be used, and the development and investment cost of the breathing mask 2-1 and the atomizing cup 2-3 can be reduced.

[0061] In the embodiment, the switching valve 1-3 has a first valve path and a second valve path controlled by the control module 1-4, the first valve path is arranged between the compressed nebulizer main machine 5a and the high-pressure gas passage of the atomizing cup 2-3, and the second valve path is arranged between the compressed nebulizer main machine 5a and the atmosphere; the control module 1-4 controls the action of the switching valve 1-3 according to the exhalation or inhalation state detected by the breathing sensor 1-2: in the inhalation state, the second valve path is disconnected, the first valve path is connected, and the drug mist is generated; in the exhalation state, the first valve path is disconnected, the second valve path is connected, and the compressed nebulizer main machine 5a is communicated with the atmosphere. In use, the patient wears the breathing mask 2-1, the breathing airflow is detected by the breathing sensor 1-2 and fed back to the control module 1-4, the control module 1-4 judges the exhalation and inhalation state of the patient, when the patient inhales, the first valve path of the switching valve 1-3 is connected, the high-pressure gas generated by the compressed nebulizer main machine 5a enters the atomizing cup 2-3 to atomize the liquid medicine, and is inhaled by the patient through the breathing mask 2-1; when the patient exhales, the first valve path of the switching valve 1-3 is closed, at this time the atomizing cup 2-3 stops generating the drug mist, and the second valve path is opened to realize the air compressor exhaust to the atmosphere. In this way, the patient can inhale the drug mist and stop generating the drug mist when exhaling, which reduces the drug waste, ensures the nebulization treatment effect, and when in the exhalation state, the compressed nebulizer main machine 5a is communicated with the atmosphere, the impact of the high-pressure gas on the air compressor sealing mechanism, the reversing valve and the pipeline is reduced, and the working stability and service life of the compressed nebulizer are ensured. In addition, in order to reduce the noise generated by the air compressor exhaust to the atmosphere, a silencer is arranged at the gas outlet of the second valve path communicated with the atmosphere, the silencer can effectively reduce the noise generated by the air compressor exhaust, which is beneficial to improve the nebulization treatment environment.

[0062] In this embodiment, the switching valves 1-3 can be designed as either a combined valve or an integrated valve. For example, when using a combined valve, an on / off solenoid valve can be installed on both the first and second valve paths. The two solenoid valves are always in a closed and open state, and the switching between the two valve paths of switching valve 1-3 is achieved through the control of the two solenoid valves. When using an integrated valve, switching valve 1-3 can be a three-way solenoid valve. This embodiment preferably uses a three-way solenoid valve design, which has a simple and compact structure, stable and reliable operation, fast switching response, and low lag in drug mist delivery, ensuring the accuracy and timeliness of drug mist delivery switching. Specifically, the three-way solenoid valve has one air inlet and two air outlets. The on / off state of the three-way solenoid valve controls the connection between the air inlet and different air outlets. In specific connection, the air inlet of the three-way solenoid valve is connected to the air outlet of the compressor atomizer main unit 5a, one air outlet of the three-way solenoid valve is connected to the atomizing cup 2-3, and the other air outlet is open to the atmosphere. During inhalation, the three-way solenoid valve connects the compressor nebulizer unit 5a to the nebulizer cup 2-3, atomizing the medication for the patient to inhale. During exhalation, the three-way solenoid valve connects the compressor nebulizer unit 5a to the atmosphere. This allows the air compressor assembly within the compressor nebulizer unit 5a to operate continuously. By controlling the flow of high-pressure air using the three-way solenoid valve, compared to directly controlling the air compressor's start and stop, the switching valve 1-3 offers a faster response time. Combined with the respiratory sensor 1-2, this enables more accurate and timely switching of medication delivery.

[0063] [Example 2]

[0064] This embodiment is an example of the application of an external breathing assembly in an ultrasonic nebulizer or a mesh nebulizer. Figure 10 The diagram shown is of an ultrasonic nebulizer.

[0065] like Figure 6 As shown, unlike Example 1, this external breathing assembly does not have an atomizing cup. For ultrasonic or mesh nebulizers, the atomizing cup is integrated into the nebulizer unit, using ultrasonic waves or piezoelectric vibrating pads to atomize the medication, which is then directly delivered to the patient for inhalation. In ultrasonic or mesh nebulizers, the breathing unit 2 also uses a breathing mask 2-1. Figure 10The switching valve 1-3 of the external breathing assembly in the ultrasonic nebulizer is arranged at the mist outlet of the ultrasonic nebulizer main machine 5b. During work, the medicine mist in the nebulizing cup is always filled, and the switching valve 1-3 is used to realize the conduction or disconnection between the nebulizing cup and the breathing mask 2-1. During use, the patient wears the breathing mask 2-1, and the breathing sensor 1-2 is used to detect the exhalation or inhalation state of the patient. When exhaling, the control module 1-4 controls the switching valve 1-3 to be disconnected, so that the medicine mist in the nebulizing cup cannot enter the breathing mask 2-1. When inhaling, the control module 1-4 controls the switching valve 1-3 to be connected, so that the medicine mist in the nebulizing cup can be inhaled.

[0066] In the embodiment, the switching valve 1-3 is a blade type on-off valve, which uses a blade to open and close the valve hole. The valve hole is larger, which can ensure the smoothness of the medicine mist delivery and meet the needs of the ultrasonic nebulizer. The blade type on-off valve can adopt a single blade rotating opening and closing structure, or a two half circle blade flipping opening and closing structure (similar to the butterfly valve structure), or a multi-blade center retracting opening and closing structure (similar to the structure principle of the multi-flap shutter of a camera lens). Figure 8 and Figure 9 A specific multi-blade center retracting opening and closing structure is given in the embodiment, which mainly includes a driving assembly, a fixed support 1-3-3, a movable support 1-3-4 and a plurality of blades 1-3-6. The fixed support 1-3-3 and the movable support 1-3-4 have a valve hole 1-3-5 therebetween, and the plurality of blades 1-3-6 are distributed circumferentially between the fixed support 1-3-3 and the movable support 1-3-4. The fixed support 1-3-3 and the movable support 1-3-4 are respectively provided with a sliding groove matched with a sliding pin on the corresponding blade 1-3-6. The relative rotation of the movable support 1-3-4 and the fixed support 1-3-3 can make the blades 1-3-6 move and rotate synchronously. Since the adjacent blades 1-3-6 are in close contact, the blades 1-3-6 can be moved to the outer periphery of the valve hole 1-3-5 to open it (as shown in FIG. 6A), or moved to the center of the valve hole 1-3-5 to close it (as shown in FIG. 6B). Figure 8 Figure 9 ​The rotation of the movable support 1-3-4 is controlled by a driving assembly, which can adopt a stepping motor 1-3-1, the output end of the stepping motor 1-3-1 is provided with a transmission gear 1-3-2, and an outer ring gear 1-3-4a is arranged on the outer periphery of the movable support 1-3-4, and the transmission gear 1-3-2 is engaged with the outer ring gear 1-3-4a. Since the movable support 1-3-4 only reciprocates in a small range to control the opening or closing of the blade 1-3-6, the outer ring gear 1-3-4a can adopt a partial tooth profile. During operation, the control module 1-4 sends instructions to the stepping motor 1-3-1 according to the breathing state detected by the breathing sensor 1-2, controls the stepping motor 1-3-1 to rotate forward or reverse, thereby realizing the on-off control of the center valve hole 1-3-5 of the switching valve 1-3.

[0067] As shown in Figure 7 , the gas supply interface 1-1a and the gas outlet interface 1-1b are arranged on the shell 1-1, the gas supply interface 1-1a can be directly connected with the mist outlet of the atomizing cup of the ultrasonic atomizer main machine 5b, and the gas outlet interface 1-1b is connected with the breathing mask 2-1 through the main gas pipe 3.

[0068] [Embodiment 3]

[0069] This embodiment is an application example of the external breathing assembly in the oxygen inhalation device. As shown in Figure 11 and Figure 12 , the gas supply unit 5 is an oxygen cylinder assembly 5c, which is mainly used for high-altitude oxygen inhalation, etc. In this embodiment, the breathing unit 2 is a breathing mask 2-1 or a nasal cannula 2-4.

[0070] In this embodiment, the external breathing assembly is similar to Embodiment 1, the difference is that the switching valve 1-3 can adopt a two-way valve, in the inhalation process, the switching valve 1-3 is opened, the oxygen in the oxygen cylinder assembly 5c is delivered to the breathing mask 2-1 or the nasal cannula 2-4 for the user to inhale; in the exhalation process, the switching valve 1-3 is disconnected, the release of oxygen in the oxygen cylinder assembly 5c is stopped, and the oxygen waste is reduced.

[0071] As shown in Figure 12 , the gas outlet of the oxygen cylinder assembly 5c is also provided with a pressure reducing valve 5c1 and a humidification bottle 5c2, which can reduce the pressure of the released oxygen and increase the humidity of the oxygen.

[0072] [Embodiment 4]

[0073] This embodiment is an application example of the external breathing assembly in the oxygen generator. As shown in Figure 16As shown, the gas supply unit 5 is an oxygen generator 5d. The oxygen generator 5d is a product in the prior art, and can cooperate with the external breathing assembly to provide oxygen during inhalation and stop oxygen supply during exhalation, thereby realizing intermittent oxygen supply function. For the oxygen generator, the breathing unit 2 can be a breathing mask 2-1 or a nasal cannula 2-4. Figure 16 The nasal cannula 2-4 is used, the oxygen outlet of the oxygen generator 5d is connected to the gas supply interface 1-1a of the detection control unit 1 through the connecting air pipe 6, the user wears the nasal cannula 2-4, the breathing state is detected by the breathing sensor 1-2 in the detection control unit 1 and fed back to the control module 1-4, and the control module 1-4 controls the switching valve 1-3 to close the oxygen supply channel during exhalation and open the oxygen supply channel during inhalation. In this way, during the exhalation process, the oxygen generated by the oxygen generator 5d can be stored in the self-provided oxygen storage container, which is conducive to improving the oxygen concentration and oxygen output of the oxygen generator. For the oxygen generator that does not originally have an oxygen storage container, the external breathing assembly for controlling the inhaled gas according to the breathing state in the embodiment further comprises an oxygen storage tank (not shown in the figure) arranged between the gas supply interface 1-1a of the switching valve 1-3 and the oxygen outlet of the oxygen generator 5d. The oxygen storage tank can be integrated in the above-mentioned shell 1-1 or independently connected to the outside of the shell 1-1 through the connecting air pipe 6. The oxygen storage tank can store oxygen, especially for small-flow oxygen generators, which can improve the maximum oxygen flow while ensuring the oxygen concentration.

[0074] Referring to Figures 13 to 15 As shown, in the embodiment, the switching valve 1-3 further has a detection interface 1-3a, that is, the switching valve 1-3 has the gas supply interface 1-1a, the gas outlet interface 1-1b and the detection interface 1-3a, the detection interface 1-3a is connected with the breathing sensor 1-2, and the connection between the detection interface 1-3a and the breathing sensor 1-2 can be achieved through the connecting pipe 1-5. The breathing unit 2 is connected with the gas outlet interface 1-1b of the switching valve 1-3. As above, the breathing unit 2 here can be a breathing mask 2-1 or a nasal cannula 2-4, which can be selected according to the use requirement. In the inhalation state, the gas supply interface 1-1a of the switching valve 1-3 is in communication with the gas outlet interface 1-1b, and the gas outlet interface 1-1b is disconnected with the detection interface 1-3a, at this time the oxygen generator 5d provides oxygen to the breathing unit 2; in the exhalation state, the gas outlet interface 1-1b and the detection interface 1-3a of the switching valve 1-3 are in communication, and the gas supply interface 1-1a is disconnected with the gas outlet interface 1-1b, at this time the breathing sensor 1-2 can detect the exhalation state and the exhalation stop time, and the breathing frequency of the user can be obtained through multiple detections and adjustments. The control module 1-4 can control the switching of the switching valve 1-3 according to the breathing frequency, thereby realizing oxygen supply during inhalation and no oxygen supply during exhalation. This structure only needs one main air pipe 3, and the structure is simpler and more convenient to use.

[0075] [Example 5]

[0076] The same as the above-mentioned Example 4, this embodiment is an application example of the external respiratory assembly in an oxygen generator. As shown in the figure, the gas supply unit 5 is an oxygen generator 5d. The oxygen generator 5d is a product in existence, which cooperates with the above-mentioned external respiratory assembly to achieve the provision of gas during inhalation and the stop of gas supply during exhalation. In this embodiment, the respiratory unit 2 is a respiratory mask 2-1. Figure 18

[0077] As shown in the figure, in this embodiment, the structure principle of the detection control unit 1 is the same as that of Example 4. In use, the oxygen outlet of the oxygen generator 5d is connected with the gas supply interface 1-1a of the detection control unit 1 through the connecting air pipe 6, and the user wears the respiratory mask 2-1, the respiratory state of which is detected by the respiratory sensor 1-2 in the detection control unit 1 and fed back to the control module 1-4, which controls the switching valve 1-3 to close the gas supply channel during exhalation and open the gas supply channel during inhalation. Figure 17

[0078] [Example 6]

[0079] The external respiratory assembly of this embodiment according to the respiratory state to control the inhaled gas, the basic structure and working principle of which are the same as those of Examples 3 to 5, the difference being that the external respiratory assembly of this embodiment can be used in a central oxygen supply system, i.e. the gas supply unit 5 is a central oxygen supply system, the central oxygen supply system has a distributed oxygen-enriched respiratory interface, the gas supply interface 1-1a of the switching valve 1-3 is connected with the distributed oxygen-enriched respiratory interface of the central oxygen supply system, and the respiratory unit 2 is a respiratory mask 2-1 or a nasal suction pipe 2-4.

[0080] The above-mentioned central oxygen supply system can be a medical central oxygen supply system or a public place oxygen-enriched engineering system, which adopts a distributed oxygen supply mode. The external respiratory assembly of this embodiment is especially suitable for a distributed medical central oxygen supply system, which provides oxygen to the oxygen-enriched respiratory interface at the bedside of a ward for the patient to inhale. By adding the above-mentioned external respiratory assembly, the patient wears the respiratory mask 2-1 or the nasal suction pipe 2-4, the respiratory state of which is detected by the respiratory sensor 1-2 in the detection control unit 1 and fed back to the control module 1-4, which controls the switching valve 1-3 to close the oxygen supply channel during exhalation and open the oxygen supply channel during inhalation. In this way, the oxygen waste can be reduced during exhalation, and the operation cost of the hospital central oxygen supply system can be saved.

[0081] ​​The external respiration assembly can provide gas when inhaling and stop providing gas when exhaling, so that various gas inhaling systems can control the inhaling gas according to the respiration state, has universal applicability, reduces the waste of effective gas, and is especially suitable for the existing atomizer and oxygen inhalation device.

[0082] The above has described the utility model and its embodiments schematically, which is not restrictive, and the drawings only show one of the embodiments of the utility model, and the actual structure is not limited thereto. Therefore, if the ordinary skilled in the art is inspired, without departing from the purpose of the utility model, similar structure modes and embodiments are designed without creativity, which should belong to the protection scope of the utility model.

Claims

1. An external breathing assembly for controlling inhaled gas according to a breathing state, characterized by: The device comprises a detection control unit (1) and a breathing unit (2), the detection control unit (1) comprises a breathing sensor (1-2), a switching valve (1-3) and a control module (1-4), the breathing sensor (1-2) is used for detecting the exhalation or inhalation state in the breathing unit (2); the switching valve (1-3) is connected with the breathing unit (2), and the switching valve (1-3) also has a gas supply interface (1-1a) for externally connecting a gas supply unit (5); the control module (1-4) is in communication connection with the breathing sensor (1-2) and the switching valve (1-3) respectively, and is used for controlling the switching valve (1-3) to perform the following actions according to the exhalation or inhalation state detected by the breathing sensor (1-2): In the inhalation state, the switching valve (1-3) connects the gas supply unit (5) with the breathing unit (2); in the exhalation state, the switching valve (1-3) disconnects the gas supply unit (5) from the breathing unit (2).

2. The external respiratory assembly for controlling the inhaled gas according to the respiratory state according to claim 1, characterized in that: The detection control unit (1) further comprises a shell (1-1), and the breathing sensor (1-2), the switching valve (1-3) and the control module (1-4) are integrated in the shell (1-1) respectively.

3. The external respiratory assembly for controlling the inhaled gas according to the respiratory state according to claim 1, characterized in that: The breathing sensor (1-2) comprises a detection tube (1-2-1), and the detection tube (1-2-1) has two position-different tube openings (1-2-2), one of the tube openings (1-2-2) is used for directly or indirectly connecting the breathing unit (2), and the other of the tube openings (1-2-2) is in communication with the atmosphere, and a gas flow detection element (1-2-3) is arranged at each of the two tube openings (1-2-2).

4. The external respiratory assembly for controlling the inhaled gas according to the respiratory state according to claim 2, characterized in that: The switching valve (1-3) also has a detection interface (1-3a), the detection interface (1-3a) is connected with the breathing sensor (1-2), and the breathing unit (2) is connected with a gas outlet interface (1-1b) of the switching valve (1-3); in the inhalation state, the gas supply interface (1-1a) of the switching valve (1-3) is in communication with the gas outlet interface (1-1b), and the gas outlet interface (1-1b) is disconnected with the detection interface (1-3a); in the exhalation state, the gas outlet interface (1-1b) and the detection interface (1-3a) of the switching valve (1-3) are in communication, and the gas supply interface (1-1a) is disconnected with the gas outlet interface (1-1b).

5. The external breathing assembly for controlling the inhaled gas according to the respiratory state according to any one of claims 1 to 3, characterized in that: The gas supply unit (5) is one of a compressed atomizer main machine (5a), an ultrasonic atomizer main machine (5b) and a mesh atomizer main machine, and the breathing unit (2) comprises a breathing mask (2-1).

6. The external respiratory assembly for controlling the inhaled gas according to the respiratory state according to claim 5, characterized in that: In the case of the gas supply unit (5) being a compressed nebulizer main machine (5a), the breathing unit (2) further comprises a nebulizing cup (2-3) connected to the breathing mask (2-1); the switching valve (1-3) has a first valve path and a second valve path controlled by the control module (1-4); the first valve path is arranged between the compressed nebulizer main machine (5a) and the high-pressure gas passage of the nebulizing cup (2-3); the second valve path is arranged between the compressed nebulizer main machine (5a) and the atmosphere; in the inhalation state, the second valve path is disconnected, and the first valve path is connected; in the exhalation state, the first valve path is disconnected, and the second valve path is connected. In the case of the gas supply unit (5) being an ultrasonic nebulizer main machine (5b) or a mesh nebulizer main machine, the switching valve (1-3) is a vane type on-off valve.

7. The external respiratory assembly for controlling the inhaled gas according to the respiratory state according to claim 6, characterized in that: In the case of the gas supply unit (5) being a compressed nebulizer main machine (5a), the gas outlet of the second valve path communicating with the atmosphere is further provided with a silencer.

8. The external breathing assembly for controlling the inhaled gas according to the respiratory state according to any one of claims 1 to 4, characterized in that: The gas supply unit (5) is an oxygen cylinder assembly (5c) or an oxygen generator (5d), and the breathing unit (2) is a breathing mask (2-1) or a nasal suction tube (2-4).

9. The external respiratory assembly for controlling the inhaled gas according to the respiratory state according to claim 8, characterized in that: In the case of the gas supply unit (5) being an oxygen generator (5d), a storage tank is arranged between the gas supply interface (1-1a) of the switching valve (1-3) and the oxygen outlet of the oxygen generator (5d).

10. The external breathing assembly for controlling the inhaled gas according to the respiratory state according to any one of claims 1 to 4, characterized in that: The gas supply unit (5) is a central oxygen supply system, the gas supply interface (1-1a) of the switching valve (1-3) is connected to the distributed oxygen-enriched breathing interface of the central oxygen supply system, and the breathing unit (2) is a breathing mask (2-1) or a nasal suction tube (2-4).

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