Portable simulation oxygen inhalation teaching demonstration device

Abstract

The utility model discloses a portable simulation oxygen inhalation teaching demonstration device belongs to medical teaching appliance technical field. The device includes installation support, oxygen inhaler, micro air pump, venturi booster pipe and compensation bottle. The installation support is constituted by base, support rod and support assembly, and the oxygen inhaler, micro air pump, venturi booster pipe and compensation bottle are all installed on the support assembly. The airflow generated by micro air pump enters venturi booster pipe, and utilizes venturi effect to form negative pressure at the throat and communicates with compensation bottle, and finally inputs the stable airflow to oxygen inhaler. The utility model solves the problems of the existing oxygen inhaler, such as relying on fixed high pressure gas source, lacking support after being separated from wall surface and unstable oxygen bag gas supply pressure, realizes the portability of oxygen inhalation operation teaching and the simulation of flow regulation, and is suitable for nursing teaching and practical operation examination.

Description

Technical Field

[0001] This utility model belongs to the field of medical teaching equipment technology, specifically relating to a portable simulated oxygen inhalation teaching demonstration device. Background Technology

[0002] Oxygen therapy is a fundamental and core procedure in clinical nursing, and an essential practical skill for nursing education, pre-employment training for medical staff, and skills assessment. Currently, commonly used national standard oxygen inhalers typically have gas input interfaces compatible with the terminal sockets of hospital centralized oxygen supply systems. They require a continuous and stable high-pressure oxygen source to operate the internal flow regulating valve, flow indicator tube, and hygroscopic bottle. In clinical teaching activities, this type of inhaler is a frequently used instrument for trainees to master oxygen therapy procedures and flow control skills.

[0003] However, existing national standard oxygen inhalers rely on centralized oxygen supply lines or high-pressure oxygen cylinders within hospital wards to function properly. This limits teaching activities to specific locations with fixed oxygen supply facilities, making it impossible to flexibly conduct them in ordinary classrooms, mobile training rooms, or assessment sites. If oxygen bags are used as an alternative gas source, their output pressure rapidly decreases as gas is expelled, making it difficult to maintain the stable suspension of the float in the flow indicator tube and failing to simulate the feel of flow adjustment under real clinical conditions. Furthermore, conventional oxygen inhalers use a wall-mounted plug-in structure, lacking stable support after being detached from the wall terminal. This makes them prone to tipping over during desktop demonstrations or handheld explanations, affecting the sealing of the humidifying fluid and the accuracy of flow observation. Therefore, there is an urgent need to improve existing technology to address the problems of unstable operation when disconnected from a fixed high-pressure gas source, poor scene adaptability, inconvenient demonstrations, and lack of supporting structure. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a portable simulated oxygen inhalation teaching demonstration device to solve the technical problems of existing oxygen inhalers being unable to operate stably after being separated from a fixed high-pressure gas source, having poor scene adaptability, being inconvenient to demonstrate, and lacking a suitable support structure.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a portable simulated oxygen inhalation teaching demonstration device, comprising a mounting bracket, an oxygen inhaler, a miniature air pump, a Venturi booster tube, and a compensation bottle; the mounting bracket includes a base, a support rod vertically mounted on the base, and a support assembly mounted on the support rod; the oxygen inhaler is mounted on the support assembly, and the oxygen inhaler includes an inhaler body, a gas input interface located on the periphery of the inhaler body, and a humidification bottle located below the inhaler body; the miniature air pump is mounted on the support assembly to provide power airflow; the Venturi booster tube is mounted on the support assembly, one end of the Venturi booster tube being sealed and connected to the miniature air pump, and the other end being sealed and connected to the gas input interface; the compensation bottle is mounted on the support assembly, and the compensation bottle is sealed and connected to the throat section of the Venturi booster tube through a booster tube.

[0006] Furthermore, the Venturi booster pipe includes an intake straight pipe section, a converging section, a throat section, a diffusing section, and an outlet straight pipe section that are smoothly connected sequentially along the airflow direction; the intake straight pipe section is sealed to the micro air pump through an intake hose, and the outlet straight pipe section is sealed to the gas input interface; the throat section has a radial branch pipe on its pipe wall, and the radial branch pipe is sealed to the booster pipe.

[0007] Furthermore, the support rod includes a fixed rod fixed to the base and a movable rod slidably disposed coaxially inside the fixed rod; the upper side wall of the fixed rod is provided with a first fastening bolt, which passes through the tube wall of the fixed rod and abuts against the outer wall of the movable rod, for locking the axial height of the movable rod relative to the fixed rod.

[0008] Furthermore, the support assembly includes a first support fixed to the top of the movable rod and a second support sleeved on the movable rod and adjustable in position along the axial direction of the movable rod; the oxygen inhaler and the Venturi booster tube are both mounted on the first support, and the micro air pump and the compensation bottle are both mounted on the second support.

[0009] Furthermore, the first support includes a fixing part for connecting with the movable rod and an inhaler support part connected to one side of the fixing part via a first connecting rod; the inhaler support part has a cup-shaped structure and an avoidance through hole at the bottom, the inhaler body is housed in the inhaler support part, and the humidification bottle passes through the avoidance through hole and is suspended below the inhaler support part.

[0010] Furthermore, the fixing part is provided with a mounting hole for inserting the top end of the movable rod, and the upper surface of the fixing part is provided with a limiting component for fixing the Venturi booster tube. The limiting component includes a limiting seat provided on the upper surface of the fixing part and a cover buckle covering the Venturi booster tube. The cover buckle and the limiting seat are detachably fixedly connected by bolts.

[0011] Furthermore, the second support includes a movable part, an air pump fixing part, and a compensation bottle fixing part; the movable part has an axial through hole for the movable rod to pass through, and a second fastening bolt is provided on one side of the movable part; on the other two adjacent sides of the movable part, excluding the side where the second fastening bolt is provided, a second connecting rod and a third connecting rod extend horizontally, respectively, the end of the second connecting rod is fixedly connected to the air pump fixing part, and the end of the third connecting rod is fixedly connected to the compensation bottle fixing part.

[0012] Furthermore, the air pump fixing part is an elastic gripper that can be clamped and fixed to the side of the micro air pump; the compensation bottle fixing part is a cylindrical support structure for supporting the compensation bottle, and the inner diameter of the cylindrical support structure is adapted to the outer diameter of the compensation bottle.

[0013] Furthermore, the miniature air pump is connected to a control module via a wire. The control module is used to adjust the air supply power of the miniature air pump, and the control module is fixedly installed on the base.

[0014] The portable simulated oxygen inhalation teaching demonstration device disclosed in this utility model is based on the coordinated operation of a micro air pump, a venturi booster tube and a compensation bottle to provide a stable and controllable alternative gas source for conventional national standard oxygen inhalers. At the same time, an integrated mounting bracket provides a suitable support and fixing structure for each component. Compared to existing technologies, this invention offers significant advantages: it eliminates the need for centralized oxygen supply lines or high-pressure oxygen cylinders in hospitals, allowing for normal use in ordinary demonstration rooms, mobile training rooms, and other settings without fixed oxygen supply facilities, greatly expanding the applicable scenarios for practical oxygen inhalation teaching; the Venturi booster tube pressurizes and stabilizes the airflow output from the micro-pump, maintaining a stable supply pressure and ensuring the accuracy and stability of the oxygen inhaler's flow rate adjustment, making the trainees' operating experience highly consistent with real clinical conditions, thus improving the effectiveness of practical teaching and assessment; the integrated mounting bracket securely fixes all components, suitable for desktop demonstrations or handheld explanations, preventing equipment tipping and damage, and allowing the device height to be adjusted according to teaching needs, enhancing the convenience and intuitiveness of demonstrations; using air as the gas source eliminates the need for medical oxygen, removing the safety risks of gas leakage and explosion, while also reducing the maintenance costs for large-scale teaching. Attached Figure Description

[0015] Figure 1This is a first-view overall structural diagram of the portable simulated oxygen inhalation teaching demonstration device in this embodiment of the utility model;

[0016] Figure 2 This is a second-view overall structural diagram of the portable simulated oxygen inhalation teaching demonstration device in this embodiment of the present invention;

[0017] Figure 3 This is a schematic diagram of the exploded structure of the portable simulated oxygen inhalation teaching demonstration device in this embodiment of the present invention;

[0018] Figure 4 This is a schematic diagram showing the connection of each component of the portable simulated oxygen inhalation teaching demonstration device without a mounting bracket in this embodiment of the utility model;

[0019] Figure 5 This is a schematic diagram of the individual structure of the mounting bracket for the portable simulated oxygen inhalation teaching demonstration device in this embodiment of the utility model.

[0020] Figure 6 This is a cross-sectional structural diagram of the Venturi booster tube in an embodiment of this utility model.

[0021] The following are the markings in the attached diagram:

[0022] 100. Mounting bracket; 110. Base; 120. Support rod; 121. Fixed rod; 122. Movable rod; 123. First fastening bolt; 130. First support member; 131. Fixing part; 132. Inhaler support part; 133. Limiting seat; 134. Cap buckle; 135. First connecting rod; 140. Second support member; 141. Movable part; 142. Air pump fixing part; 143. Compensation bottle fixing part; 144. Second connecting rod; 145. Three-link linkage; 146, second fastening bolt; 200, oxygen inhaler; 201, inhaler body; 210, gas input interface; 220, humidification bottle; 300, miniature air pump; 310, inlet hose; 400, venturi booster hose; 410, inlet straight section; 420, tapering section; 430, throat section; 431, radial branch; 440, diffuser section; 450, outlet straight section; 500, compensation bottle; 510, booster hose. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0024] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] Existing medical oxygen inhalers that meet national standards can only function properly if they rely on centralized oxygen supply lines or high-pressure oxygen cylinders in hospitals. This limits teaching activities to specific locations with fixed oxygen supply facilities. Furthermore, when oxygen bags are used as a substitute, there are issues such as pressure attenuation and poor simulation realism. In addition, wall-mounted structures lack stable support after being detached from the wall, which affects the demonstration effect.

[0026] Based on this, and to improve the problems in related technologies, this utility model provides a portable simulated oxygen inhalation teaching demonstration device, such as... Figures 1 to 5 As shown, the system includes a mounting bracket 100, which includes a base 110, a support rod 120 vertically mounted on the base 110, and a support assembly mounted on the support rod 120; an oxygen inhaler 200 mounted on the support assembly, which includes an inhaler body 201, a gas input port 210 located on the outer periphery of the inhaler body 201, and a humidification bottle 220 located below the inhaler body 201; a miniature air pump 300 mounted on the support assembly for providing power airflow; a Venturi booster tube 400 mounted on the support assembly, one end of which is sealed and connected to the miniature air pump 300, and the other end of which is sealed and connected to the gas input port 210; and a compensation bottle 500 mounted on the support assembly, which is sealed and connected to the Venturi booster tube 400 via a booster tube 510.

[0027] The mounting bracket 100 has a base 110 that supports the entire device on a desktop or tabletop. A support rod 120 is vertically fixed to the base 110, and the support assembly serves as the mounting base for all components. The oxygen inhaler 200 is a standard medical oxygen inhaler structure conforming to national standards, requiring no modification to its original structure and directly adaptable to this device, ensuring consistency between trainee operation training and real clinical conditions. The oxygen inhaler 200 includes a flow regulating valve and a flow indicator tube. A gas input interface 210 connects to a gas source, and a humidification bottle 220 contains humidifying liquid for humidifying the airflow. The miniature air pump 300 is a DC miniature air pump that can be directly powered by an external power source or a portable power supply, making it suitable for outdoor use without fixed power supply facilities and providing a continuous and stable airflow. The Venturi booster tube 400 utilizes the Venturi effect to pressurize the airflow output by the miniature air pump 300. Air from the ambient environment is stored in the compensation bottle 500 and supplied as secondary airflow to the throat area of ​​the Venturi booster tube 400 via the booster tube 510, achieving mixing of the main airflow and secondary airflow. This increases the pressure and flow rate of the output airflow without increasing the power consumption of the miniature air pump 300. During operation, the low-pressure airflow output by the miniature air pump 300 enters the Venturi booster tube 400, creating negative pressure at the throat area. This draws in air from the compensation bottle 500 and mixes it with the main airflow. After mixing, the airflow pressure rises and enters the oxygen inhaler 200 through the gas input interface 210, driving the flow regulating valve and flow indicator tube to operate normally. The airflow is finally humidified by the humidification bottle 220 and output through the gas output interface, simulating the entire process of clinical oxygen administration.

[0028] In one embodiment, such as Figure 6 As shown, the Venturi booster pipe 400 includes an intake straight pipe section 410, a tapering section 420, a throat section 430, a diffusing section 440, and an outlet straight pipe section 450 that are smoothly connected in sequence along the airflow direction. The intake straight pipe section 410 is sealed to the micro air pump 300 through an intake hose 310, and the outlet straight pipe section 450 is sealed to the gas input interface 210. A radial branch pipe 431 is provided on the pipe wall of the throat section 430, and the radial branch pipe 431 is sealed to the booster pipe 510.

[0029] The inlet straight pipe section 410 is a cylindrical flow channel of equal diameter, which can regulate the airflow output by the micro air pump 300 and eliminate airflow disturbance. The diameter of the tapering section 420 smoothly decreases along the airflow direction, compressing the airflow, increasing the flow velocity and reducing the static pressure. The throat section 430 is a short cylindrical flow channel of equal diameter with the smallest inner diameter of the entire pipe. Here, the airflow velocity reaches its peak and the static pressure drops to its lowest, forming a stable negative pressure zone. The radial branch pipe 431 is set perpendicular to the throat section 430, and its inner cavity is connected to the flow channel of the throat section 430. It uses the negative pressure at the throat to continuously draw in the secondary airflow from the compensation bottle 500. The diameter of the diffuser section 440 smoothly increases along the airflow direction, efficiently converting the kinetic energy of the airflow into static pressure energy, so that the pressure of the mixed airflow significantly increases. The outlet straight pipe section 450 is a cylindrical flow channel of equal diameter, which smoothly delivers the pressurized and stable airflow to the oxygen inhaler 200.

[0030] As a specific implementation, both the outer ends of the inlet straight pipe section 410 and the outlet straight pipe section 450 are provided with thickened annular mating interfaces to facilitate a stable and sealed connection with the inlet hose 310 and the gas input interface 210. As an alternative embodiment, those skilled in the art can also adjust the contraction ratio and diffusion angle of the gradually narrowing section 420 and the gradually expanding section 440 according to the actual gas source pressure to obtain the desired pressurization effect. This structure ensures that the low-pressure airflow output by the micro-pump 300, after pressurization, can meet the driving requirements of the oxygen inhaler 200. Simultaneously, the secondary airflow supplement from the compensation bottle 500 further enhances the stability of the output airflow, ensuring that the float inside the flow indicator tube can remain stably suspended, simulating real clinical conditions.

[0031] In one embodiment, such as Figure 3 and Figure 5 As shown, the support rod 120 includes a fixed rod 121 fixed to the base 110 and a movable rod 122 slidably disposed coaxially inside the fixed rod 121; the upper side wall of the fixed rod 121 is provided with a first fastening bolt 123, which passes through the tube wall of the fixed rod 121 and abuts against the outer wall of the movable rod 122, for locking the axial height of the movable rod 122 relative to the fixed rod 121.

[0032] The fixed rod 121 is a hollow tubular structure, and its inner cavity size is adapted to the outer diameter of the movable rod 122, allowing the movable rod 122 to slide smoothly along the axial direction of the fixed rod 121. The first fastening bolt 123 can be a wing bolt. As a specific embodiment, the inner wall of the fixed rod 121 can be provided with an axial guide groove, and the outer wall of the movable rod 122 can be provided with a guide ridge adapted to the guide groove, preventing the movable rod 122 from rotating circumferentially during lifting and lowering, thus ensuring the stability of the device. As an alternative embodiment, those skilled in the art can also use a pneumatic telescopic rod or an electric telescopic rod as the support rod 120 to achieve automatic height adjustment of the device and adapt to different demonstration scenarios.

[0033] This structure allows users to adjust the extension height of the movable rod 122 after loosening the first fastening bolt 123 according to the needs of teaching demonstrations, and then tighten the first fastening bolt 123 to lock the position, thereby changing the height of the entire device to suit desktop placement, handheld demonstrations, or use by operators of different heights, thus improving the device's scene adaptability.

[0034] In one embodiment, such as Figure 3 and Figure 5 As shown, the support assembly includes a first support 130 fixed to the top of the movable rod 122 and a second support 140 sleeved on the movable rod 122 and adjustable in position along the axial direction of the movable rod 122. The oxygen inhaler 200 and the Venturi booster tube 400 are both mounted on the first support 130, while the miniature air pump 300 and the compensation bottle 500 are both mounted on the second support 140. By distributing the components on the first support 130 and the second support 140, and by adjusting the position of the second support 140, the center of gravity of the device is adjustable, facilitating the connection and maintenance of the piping for each component.

[0035] The first support 130 is fixed to the top of the movable rod 122 and supports the core operating components, the oxygen inhaler 200 and the Venturi booster tube 400, allowing trainees to directly observe the flow indication and operation process of the oxygen inhaler. The second support 140 can slide along the axial direction of the movable rod 122 and supports the power components, the miniature air pump 300 and the compensation bottle 500. Its height can be flexibly adjusted according to the pipeline length and demonstration needs, making the overall layout of the device more reasonable. As a specific implementation, both the first support 130 and the second support 140 are made of rigid engineering plastic, combining structural strength and lightweight characteristics, facilitating the movement and carrying of the device. As an alternative embodiment, those skilled in the art can also set multiple supports on the movable rod 122 to support different components, adapting to oxygen inhalers and power components of different sizes.

[0036] In one embodiment, the first support member 130 includes a fixing part 131 for connection with the movable rod 122 and an inhaler support part 132 connected to one side of the fixing part 131 by a first connecting rod 135; the inhaler support part 132 has a cup-shaped structure and a clearance through hole at the bottom. The inner diameter of the clearance through hole is larger than the outer diameter of the humidification bottle 220 and smaller than the outer diameter of the inhaler body 201. The inhaler body 201 is housed in the inhaler support part 132, and the humidification bottle 220 passes through the clearance through hole and is suspended below the inhaler support part 132.

[0037] The cup-shaped inhaler support 132 has an inner cavity size that matches the outer diameter of the inhaler body 201, which can radially limit the inhaler body 201 and prevent the oxygen inhaler from shaking or tipping over during operation. The clearance hole at the bottom is larger than the outer diameter of the humidification bottle 220 but smaller than the outer diameter of the inhaler body 201, which can axially support the oxygen inhaler 200 and allow the humidification bottle 220 to be properly exposed, making it convenient for trainees to observe the humidification process and add humidification fluid.

[0038] In one embodiment, such as Figure 3 and Figure 5 As shown, the fixing part 131 is provided with a mounting hole for inserting the top end of the movable rod 122. The upper surface of the fixing part 131 is provided with a limiting assembly for fixing the Venturi booster tube 400. The limiting assembly includes a limiting seat 133 provided on the upper surface of the fixing part 131 and a cover buckle 134 covering the Venturi booster tube 400. The cover buckle 134 and the limiting seat 133 are fixedly connected by bolts.

[0039] The inner diameter of the mounting hole is adapted to the outer diameter of the top end of the movable rod 122. After the top end of the movable rod 122 is inserted into the mounting hole, it can be further locked by the set screw to ensure the connection stability between the first support 130 and the movable rod 122. The upper surface of the limiting seat 133 is provided with an arc-shaped groove adapted to the outer wall of the Venturi booster tube 400, and the lower surface of the cover buckle 134 is also provided with a corresponding arc-shaped groove. The two work together to fully cover and clamp the Venturi booster tube 400, preventing the vibration generated during the airflow process from causing the Venturi booster tube to shift or fall off.

[0040] In one embodiment, the second support member 140 includes a movable part 141, an air pump fixing part 142, and a compensation bottle fixing part 143; the movable part 141 has an axial through hole for the movable rod 122 to pass through, and a second fastening bolt 146 is provided on one side of the movable part 141; a second connecting rod 144 and a third connecting rod 145 extend horizontally from the other two adjacent sides of the movable part 141, excluding the side where the second fastening bolt 146 is provided, respectively; the end of the second connecting rod 144 is connected to the air pump fixing part 142, and the end of the third connecting rod 145 is connected to the compensation bottle fixing part 143.

[0041] The inner diameter of the axial through hole of the movable part 141 is adapted to the outer diameter of the movable rod 122, allowing the movable part 141 to slide smoothly along the axial direction of the movable rod 122. The second fastening bolt 146 can be a wing bolt, which can be manually tightened to lock the axial position of the second support 140 without the need for tools. The air pump fixing part 142 and the compensation bottle fixing part 143 are respectively located on two adjacent sides of the movable part 141, which can avoid interference between the micro air pump 300 and the compensation bottle 500 during installation, and at the same time make the overall center of gravity distribution of the device more balanced, improving the placement stability. In use, the height of the second support 140 can be adjusted along the axial direction of the movable rod 122 by loosening the second fastening bolt 146, thereby adjusting the relative position of the micro air pump 300 and the compensation bottle 500, making the overall layout of the device more compact and the pipeline connection smoother. The elastic gripper of the air pump fixing part 142 can adapt to miniature air pumps 300 of different shapes and sizes, and the cylindrical support structure of the compensation bottle fixing part 143 can effectively prevent the compensation bottle 500 from tipping over.

[0042] In one embodiment, the air pump fixing part 142 is an elastic gripper that can be clamped and fixed to the side of the micro air pump 300; the compensation bottle fixing part 143 is a cylindrical support structure for supporting the compensation bottle 500, the inner diameter of the cylindrical support structure being adapted to the outer diameter of the compensation bottle 500.

[0043] The elastic gripper's inner diameter is adapted to the outer diameter of the miniature air pump 300, allowing it to securely hold the miniature air pump 300 through its own elastic deformation, while also facilitating quick disassembly and replacement of the miniature air pump 300. The inner cavity size of the cylindrical support structure is adapted to the outer diameter of the compensation bottle 500, providing radial restraint to prevent the compensation bottle 500 from tipping over or shifting during demonstrations. As a specific implementation, the inner wall of the elastic gripper can be provided with anti-slip textures to further enhance the gripping stability of the miniature air pump 300; a buffer pad can be provided at the inner bottom of the cylindrical support structure to prevent the compensation bottle 500 from being damaged by impacts during placement.

[0044] In one embodiment, such as Figure 1 , Figure 2 As shown, the miniature air pump 300 is connected to a control module via wires. The control module is used to adjust the air supply power of the miniature air pump 300, and is fixedly mounted on the base 110. Users can adjust the output flow rate and pressure of the miniature air pump 300 through the control module, thereby simulating the operating feel at different oxygen flow rates, making the teaching demonstration more closely resemble clinical practice. Alternatively, those skilled in the art can integrate the control module onto the support rod 120, or use a wireless remote control module for remote control, further improving operational convenience.

[0045] The working principle of the entire device is as follows: Place the device on a table or in your hand, adjust the height of the movable rod 122 to a suitable position using the first fastening bolt 123, and adjust the height of the second support 140 using the second fastening bolt 146 to ensure smooth pipe connection. Turn on the power to start the micro air pump 300. The low-pressure airflow output by the micro air pump 300 enters the straight intake section 410 of the Venturi booster tube 400 through the intake hose 310. The airflow flows through the gradually converging section 420 and is compressed and accelerated, forming a negative pressure at the throat section 430. This negative pressure acts on the compensation bottle 500 through the radial branch pipe 431 and the booster air pipe 510, drawing in the air in the compensation bottle 500 and mixing it with the main airflow. The mixed airflow enters the gradually diffusing section 440, where the airflow speed decreases and the pressure rises, forming a pressurized and stable airflow. This airflow then enters the gas input interface 210 of the oxygen inhaler 200 through the outlet straight section 450. The pressurized airflow drives the flow regulating valve and flow indicator tube inside the oxygen inhaler 200 to work normally. Trainees observe the rise and fall of the float in the flow indicator tube by operating the flow regulating valve, and learn flow control skills. The airflow finally enters the humidification bottle 220 for humidification and is then output through the gas output interface, simulating the entire clinical oxygen inhalation process.

[0046] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A portable simulated oxygen inhalation teaching demonstration device, characterized in that, include: The mounting bracket includes a base, a support rod vertically mounted on the base, and a support assembly mounted on the support rod; an oxygen inhaler mounted on the support assembly, the oxygen inhaler including an inhaler body, a gas input interface located on the periphery of the inhaler body, and a humidification bottle located below the inhaler body; a miniature air pump mounted on the support assembly for providing power airflow; a Venturi booster tube mounted on the support assembly, one end of the Venturi booster tube being sealed and connected to the miniature air pump, and the other end being sealed and connected to the gas input interface; and a compensation bottle mounted on the support assembly, the compensation bottle being sealed and connected to the throat section of the Venturi booster tube via a booster tube.

2. The portable simulated oxygen inhalation teaching demonstration device according to claim 1, characterized in that, The Venturi booster pipe includes an intake straight pipe section, a converging section, a throat section, a diffusing section, and an outlet straight pipe section that are smoothly connected sequentially along the airflow direction; the intake straight pipe section is sealed to the micro air pump through an intake hose, and the outlet straight pipe section is sealed to the gas input interface; the throat section has a radial branch pipe on its pipe wall, and the radial branch pipe is sealed to the booster pipe.

3. The portable simulated oxygen inhalation teaching demonstration device according to claim 1, characterized in that, The support rod includes a fixed rod fixed to the base and a movable rod slidably disposed coaxially inside the fixed rod; the upper side wall of the fixed rod is provided with a first fastening bolt, which passes through the tube wall of the fixed rod and abuts against the outer wall of the movable rod, for locking the axial height of the movable rod relative to the fixed rod.

4. The portable simulated oxygen inhalation teaching demonstration device according to claim 3, characterized in that, The support assembly includes a first support fixed to the top of the movable rod and a second support sleeved on the movable rod and adjustable in position along the axial direction of the movable rod; the oxygen inhaler and the Venturi booster tube are both mounted on the first support, and the micro air pump and the compensation bottle are both mounted on the second support.

5. The portable simulated oxygen inhalation teaching demonstration device according to claim 4, characterized in that, The first support includes a fixing part for connecting with the movable rod and an inhaler support part connected to one side of the fixing part by a first connecting rod; the inhaler support part has a cup-shaped structure and an avoidance through hole at the bottom, the inhaler body is housed in the inhaler support part, and the humidification bottle passes through the avoidance through hole and is suspended below the inhaler support part.

6. The portable simulated oxygen inhalation teaching demonstration device according to claim 5, characterized in that, The fixing part is provided with a mounting hole for inserting the top end of the movable rod. The upper surface of the fixing part is provided with a limiting component for fixing the Venturi booster tube. The limiting component includes a limiting seat provided on the upper surface of the fixing part and a cover buckle covering the Venturi booster tube. The cover buckle and the limiting seat are detachably fixedly connected by bolts.

7. The portable simulated oxygen inhalation teaching demonstration device according to claim 4, characterized in that, The second support includes a movable part, an air pump fixing part, and a compensation bottle fixing part; the movable part has an axial through hole for the movable rod to pass through, and a second fastening bolt is provided on one side of the movable part; on the other two adjacent sides of the movable part, excluding the side where the second fastening bolt is provided, a second connecting rod and a third connecting rod extend horizontally, respectively, the end of the second connecting rod is fixedly connected to the air pump fixing part, and the end of the third connecting rod is fixedly connected to the compensation bottle fixing part.

8. The portable simulated oxygen inhalation teaching demonstration device according to claim 7, characterized in that, The air pump fixing part is an elastic gripper that can be clamped and fixed to the side of the micro air pump; the compensation bottle fixing part is a cylindrical support structure for supporting the compensation bottle, and the inner diameter of the cylindrical support structure is adapted to the outer diameter of the compensation bottle.

9. The portable simulated oxygen inhalation teaching demonstration device according to claim 1, characterized in that, The miniature air pump is connected to a control module via a wire. The control module is used to adjust the air supply power of the miniature air pump and is fixedly installed on the base.

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