Atomizer used in bed

Abstract

The invention discloses an atomizer used in bed, and relates to the technical field of sprayers or atomizers specially suitable for treatment purposes. The main body of the atomizer is a triangular cylinder shell, a V-shaped liquid collecting groove and a liquid medicine backflow system are arranged in the atomizer, the atomization assembly comprises core components such as an air guide cone and a diffusion sheet, stable atomization of a lying body position can be achieved, and the medicine residual rate is small. According to the equipment, a differential pressure type breathing induction sensor is additionally arranged at a mist outlet in a shell and is matched with a micro control module and an electromagnetic control valve, a set non-breathing judgment period is preset, and intelligent control of starting when breathing is detected and stopping when breathing does not exist in the set period is achieved. By means of the design, frequent starting and stopping are avoided, medicine mist waste is reduced, the medicine deposition efficiency is improved, the external structure does not need to be changed, the modification cost is low, and the atomization treatment requirements of hospitals, families and other scenes are met.

Description

Technical Field

[0001] This application relates to the field of nebulizers or atomizers specifically for therapeutic purposes, and in particular to nebulizers for use while in bed. Background Technology

[0002] In the clinical treatment and home care of respiratory diseases, nebulized inhalation therapy has become an indispensable core treatment method due to its advantages such as direct drug action on the lesion, rapid onset of action, and minimal systemic side effects. This therapy disperses liquid medication into tiny aerosol particles through a nebulizer, allowing the medication to be deposited in the respiratory tract and lungs with the inhalation flow. This precisely exerts therapeutic effects such as bronchodilator dilution, sputum thinning, and anti-inflammatory and anti-infective effects. It is widely applicable to the treatment of various respiratory diseases such as asthma, chronic obstructive pulmonary disease, bronchitis, pneumonia, and allergic rhinitis. It is also frequently used in postoperative airway care and airway management for critically ill patients. With the popularization of medical technology and the upgrading of family health needs, handheld portable nebulizers, due to their small size, ease of operation, and lack of need for an external fixed air source, are gradually replacing traditional desktop nebulizers, becoming the preferred nebulization device for outpatients, home caregivers, and mobile scenarios, greatly improving patient convenience and compliance.

[0003] Currently, the mainstream handheld portable nebulizers on the market mainly fall into two categories: ultrasonic nebulizers and vibrating screen nebulizers. Among them, vibrating screen nebulizers are more favored for portable applications due to their advantages such as low noise, uniform atomized particles, low residual drug, and DC drive capability. Structurally, existing handheld portable nebulizers generally adopt an integrated vertical structure of "nebulizer cup + handheld body + mask / mouthpiece." Their core operating logic relies on the stable storage of the drug solution within the nebulizer cup and the vertical working posture of the atomizing components. Specifically, the nebulizer cup, as the core component for drug storage and atomization, typically adopts a cylindrical structure with an open top and a sealed bottom. Internally, it contains key components such as a drug storage chamber, an atomizing screen, and a piezoelectric ceramic plate. The drug solution must be maintained within a specific liquid level range, and the atomizing screen must be completely immersed in the drug solution to allow the high-frequency vibration of the piezoelectric ceramic plate to drive the drug solution through the screen holes to form qualified aerosol particles. To ensure these working conditions, all existing handheld portable nebulizers are designed for vertical use, meaning the axis of the nebulizer cup must be perpendicular to the horizontal plane. This allows the liquid medication to naturally converge at the bottom of the nebulizer cup under gravity, ensuring full contact with the nebulization components. It also prevents the liquid medication from overflowing or leaving the nebulization area due to tilting, which could interrupt nebulization.

[0004] However, in actual clinical applications and home care scenarios, the limitations of this vertical design have become increasingly apparent. Especially when patients need to be treated in a lying position, the convenience and applicability of existing handheld portable nebulizers are greatly reduced, and they may even become unusable, causing many problems for patients and affecting the treatment effect to some extent.

[0005] When patients are in a supine position (including supine, lateral, and prone positions), using existing vertical handheld portable nebulizers presents a series of unavoidable problems. Furthermore, the ease of operation is extremely poor, increasing the burden on both patients and caregivers.

[0006] To address the aforementioned positional limitations, some targeted improvements have been attempted in existing technologies, but all have significant drawbacks and cannot meet the practical needs of handheld portable scenarios. For example, one technical solution proposes a design using a self-righting base combined with a flexible tube assembly. The self-righting base adjusts the gravity to keep the nebulizer cup upright, while the flexible tube adapts to the patient's lying position. However, while the self-righting base solves the problem of the nebulizer cup tilting, the spherical structure of the base increases the overall size and weight of the device, undermining the lightweight advantage of handheld portable nebulizers. It cannot achieve true handheld operation and is only suitable for treatment in a fixed lying position, failing to meet the needs of patient mobility care and carrying it when traveling. Furthermore, its flexible tube assembly uses a multi-layered nested structure, which is not only complex and costly to manufacture, but also has problems such as tube bending leading to poor mist delivery and increased residual medication. In addition, the interaction between the helical spring and the shaped flexible tube is prone to producing abnormal noise, affecting the patient's rest.

[0007] From the perspective of industry development trends and market demand, with the increasing aging population, the normalization of chronic disease management, and the popularization of home medical devices, the application scenarios of handheld portable nebulizers are constantly expanding. Patients are increasingly demanding higher requirements for the device's adaptability to body position, ease of operation, and lightweight design. Especially in core scenarios such as elderly care, postoperative rehabilitation, and pediatric care, stable nebulization in a lying position has become a necessity. The design flaws of existing vertically oriented handheld portable nebulizers have become a key bottleneck restricting their clinical application and market promotion. At the same time, with the advancement of medical technology, the duration and frequency of nebulization therapy are constantly being optimized. Some patients with chronic diseases need to undergo nebulization therapy 2-4 times a day, with each treatment lasting 15-20 minutes. The treatment experience of maintaining a fixed posture for a long time has become a core pain point for patients, urgently requiring a handheld nebulizer design solution that can be used stably and conveniently in a lying position, while also being lightweight, portable, and low-cost.

[0008] Furthermore, from the perspective of medical safety and treatment standardization, existing vertical nebulizers suffer from issues such as medication spillage and unstable nebulization when used while the patient is lying down. These problems not only affect treatment efficacy but may also pose safety risks. For example, medication flowing into the patient's airway may cause choking and airway spasm, especially for critically ill patients with impaired consciousness or swallowing dysfunction. Insufficient drug deposition due to substandard nebulizer particle size may lead to poor patient condition control and increase the treatment burden. At the same time, frequent medication replenishment and equipment cleaning increase the complexity of nursing procedures and increase the risk of cross-infection due to improper operation, failing to meet relevant hospital infection control requirements.

[0009] In summary, the vertical design commonly used in existing handheld portable nebulizers has many drawbacks, such as being unable to adapt to patients' lying positions, inconvenient operation, unstable nebulization effects, and high safety risks. These drawbacks affect patients' treatment experience and compliance, and fail to meet the nursing needs of various clinical scenarios. Summary of the Invention

[0010] Therefore, the purpose of this application is to provide a bedridden nebulizer that can be used horizontally, adapting to the patient's lying position. This effectively solves the problems of medication spillage, nebulization interruption, and unstable effects that occur with existing nebulizers when used in a lying position. It also boasts advantages such as lightweight design, portability, and low cost, improving the patient's treatment experience and compliance. This nebulizer achieves stable nebulization in a lying position through an innovative triangular prism shell structure, a V-shaped liquid collection groove design, and a medication circulation and reflux system, filling a gap in existing technology for nebulization therapy in a lying position.

[0011] To achieve the above objectives, this application adopts the following technical solution:

[0012] A bedridden nebulizer includes a housing, a liquid collection plate, atomizing components, an air inlet pipe, and a mist outlet pipe;

[0013] The shell is shaped like a triangular prism and has an inner cavity. Two liquid collecting plates are placed obliquely in the inner cavity. One side of each liquid collecting plate is fixed to the middle of the shell, and the other side is fixed to the middle of the bottom surface of the shell. This makes the two liquid collecting plates V-shaped and form a V-shaped liquid collecting groove. The design of the triangular prism shell can ensure the stability of the equipment in a flat position, while providing sufficient diffusion space for the aerosol particles generated by atomization, avoiding particle aggregation due to limited space, and ensuring uniform distribution of aerosol particles.

[0014] The bottom surface of the housing is flat, ensuring that the nebulizer can be stably placed on any flat surface such as a bed or table without the need for additional fixing devices, thus adapting to various placement needs of patients when lying down.

[0015] The atomizing component is installed on the housing and placed in the middle of the housing. As the core component for atomization, the design of being installed in the middle allows the atomized drug mist to diffuse evenly in all directions, improving the distribution efficiency of the drug mist in the inner cavity of the housing.

[0016] The air intake pipe passes through one side of the housing and is connected to the atomizing component. It is used to introduce pressurized gas to drive atomization. The side-through design of the air intake pipe avoids interference with the flat state of the housing and facilitates connection to an external air source.

[0017] The mist outlet tube is installed on the other side of the housing and is used to deliver the generated aerosol particles to the patient's respiratory tract. The structural design of placing the mist outlet tube and the air inlet tube on opposite sides can form a stable airflow channel and ensure the smooth delivery of the drug mist.

[0018] Furthermore, the atomizing assembly includes a receiving cup, an air guide cone, a conical sleeve, a diffuser, a connector, a guide tube, a horn tube, and a screw cap;

[0019] A tubular assembly part is formed in the middle of the top of the shell. The assembly part and the shell are integrally formed to ensure structural strength and sealing. The screw cap is fastened to the assembly part to achieve sealing and fixation of the atomizing component. The screw cap and the assembly part are connected by threads, snap-fit, or plug, which are firm and easy to disassemble. It is even equipped with a silicone sealing ring to ensure that the atomized mist will not leak during the atomization process.

[0020] The air guide cone is installed in the middle of the container cup, with its bottom end penetrating through the container cup. One end of the air inlet pipe is fixedly connected to the bottom of the air guide cone, so that the air inlet pipe communicates with the air guide cone. Pressurized gas can enter the air guide cone through the air inlet pipe. The air guide cone adopts a frustum cone structure design, which enables pressurized gas to form a high-speed airflow at the top of the cone, thereby generating a stable negative pressure environment.

[0021] The conical sleeve is movably fitted onto the air guide cone, and the inner wall of the conical sleeve and the outer wall of the air guide cone form a drainage gap to ensure the uniformity of the drainage gap.

[0022] The diffuser is fixed to the bottom end of the guide tube and is located above the conical sleeve. It is used to disperse the liquid drug into fine water droplets. The diffuser has a solid structure and is rectangular in shape. The liquid phase rising along the drainage gap impacts the bottom surface of the diffuser, and under the impact of pressurized oxygen rising in the gas guide cone, the liquid drug turns into tiny mists and disperses in the air. The diffuser effectively breaks the liquid drug into tiny droplets, providing a good foundation for subsequent atomization.

[0023] The conical sleeve is fixedly installed on the guide tube by a connector to achieve synchronous movement between the conical sleeve and the guide tube. The connector uses two evenly distributed plastic connecting rods, which have high connection strength and do not hinder the flow of air and medicine.

[0024] The guide tube is located above the conical sleeve and connected to the bottom end of the horn tube. It is used to guide the fall of the replenishing liquid and also for the installation and stability of the conical sleeve. The inner wall of the guide tube is designed with a smooth arc to reduce the adhesion of the drug mist to the tube wall and reduce drug residue.

[0025] The top surface of the horn tube is fixedly connected to the screw cap. The positioning of each component of the atomizing assembly is achieved by tightening the screw cap. The horn tube adopts a horn-shaped structure that is wider at the top and narrower at the bottom, which allows the replenishing liquid to be accurately placed into the container after being added.

[0026] When the cap is securely installed on the assembly part, a drainage gap is formed between the conical sleeve and the air guide cone. This drainage gap is used to guide the liquid in the container cup to the top surface of the air guide cone under negative pressure, providing a continuous supply of liquid medicine for atomization. The width of the drainage gap is precisely controlled to ensure that the liquid medicine can be stably extracted under negative pressure, while avoiding insufficient negative pressure due to an excessively large gap or blockage of the liquid medicine due to an excessively small gap.

[0027] Furthermore, the air inlet pipe is a rigid pipe, which fixes the container cup in the middle of the housing, and the container cup is coaxial with the assembly part, ensuring the stability of the atomizing component and preventing the container cup from shifting due to device tilting. The rigid pipe is made of medical-grade PVC material, which has good rigidity and corrosion resistance and can withstand the impact of pressurized gas for a long time without deformation. The upper part of the container cup is connected to the inner cavity of the housing, so that the atomized liquid can diffuse in the inner cavity, increasing the drug mist diffusion space and ensuring uniform distribution of aerosol particles. The top of the container cup adopts an open design, which facilitates the rapid diffusion of drug mist into the inner cavity of the housing, while preventing drug mist from accumulating in the container cup.

[0028] Furthermore, the atomizing assembly also includes a return pipe, an air path branch pipe, and a miniature Venturi tube;

[0029] One end of the gas path branch is fixed to the air inlet pipe and connected to the air inlet pipe. It is used to divert pressurized gas in the air inlet pipe. The diversion ratio of the gas path branch is precisely calculated to ensure that it can provide sufficient gas driving negative pressure for the micro venturi tube without affecting the gas pressure of the main atomization channel.

[0030] The inlet end of the miniature venturi tube is connected to the gas path branch pipe, and its branch end is connected to the return pipe. The miniature venturi tube adopts a miniaturized design, is small in size and has a significant negative pressure effect, and can generate sufficient negative pressure suction under a very small gas flow rate.

[0031] The other end of the return pipe is placed at the bottom of the liquid collection tank;

[0032] The return pipe is used to guide the liquid in the collection tank to the micro Venturi tube, so as to realize the recycling of the drug solution and reduce drug residue. The return pipe is made of flexible silicone material, which has good flexibility and corrosion resistance, and can fit tightly to the bottom of the collection tank to ensure that the residual drug solution is completely extracted.

[0033] Furthermore, the outlet end of the micro Venturi tube faces the outer wall of the guide tube, and the outlet end of the micro Venturi tube is located above the receiving cup. When pressurized gas passes through the micro Venturi tube, a negative pressure is formed at the branch end, drawing out the residual liquid in the collection tank through the return pipe and spraying it onto the outer wall of the guide tube through the outlet end. The liquid then flows back into the receiving cup along the tube wall, achieving circulating atomization of the liquid. The orientation of the outlet end is precisely positioned to ensure that the sprayed liquid accurately falls onto the outer wall of the guide tube. The smooth design of the outer wall of the guide tube allows the liquid to quickly flow back into the receiving cup and participate in the atomization process again.

[0034] Furthermore, the screw cap includes an upper cover, a lower cover, and a handle;

[0035] The upper cover and the lower cover are connected by a pivot, allowing the upper cover to rotate relative to the lower cover. The pivot is made of wear-resistant plastic, which is flexible and not easily damaged, and can withstand multiple rotation operations without failure. The handle is fixed on the upper cover for easy operation by the user. The surface of the handle has an anti-slip texture design, so it can be rotated easily even when the hands are wet.

[0036] The upper and lower covers each have two fan-shaped openings. Rotating the handle opens or closes these openings. When open, liquid replenishment is possible; when closed, the nebulizer's sealing performance is ensured, preventing mist leakage. The fan-shaped openings are rationally designed to meet the need for rapid liquid replenishment without causing mist leakage due to excessive size. Furthermore, the two openings are symmetrically distributed, facilitating liquid replenishment from any angle.

[0037] Furthermore, the top surface of the receiving cup is higher than the top surface of the air-guiding cone and lower than the bottom surface of the guide tube, ensuring that the liquid medicine can be stably stored in the receiving cup, while avoiding interference with the flow of the liquid medicine by the guide tube. The volume of the receiving cup is designed to be 15-25ml, which can meet the liquid medicine requirements of a single nebulization treatment and reduce the number of refills. The inner diameter of the top ring of the receiving cup is larger than the inner diameter of the assembly part, ensuring that the liquid medicine generated by nebulization can diffuse smoothly into the inner cavity of the shell, avoiding blockage of the liquid medicine due to the small diameter, and improving the delivery efficiency of the liquid medicine.

[0038] Furthermore, in some designs, the connecting surface of the housing located on the mist outlet tube is fastened to the housing, facilitating the opening and cleaning of the housing's inner cavity, reducing the difficulty of equipment cleaning, and minimizing the risk of cross-infection. The connecting surface adopts a snap-fit ​​design, ensuring a secure fit and easy disassembly, requiring no additional tools for easy opening. A silicone sealing gasket is provided between the connecting surface and the housing to ensure a tight seal after fastening, preventing mist leakage.

[0039] Furthermore, in some other designs, the housing is a fixed structure and cannot be disassembled. When cleaning of the housing's interior is required, it can be done through the assembly section or through the air inlet pipe and mist outlet pipe.

[0040] Furthermore, the ratio of the inner diameter of the airway branch tube to the inner diameter of the air inlet tube is 1:4 to 9. This ratio ensures the diversion effect of the airway branch tube, ensuring sufficient negative pressure is formed within the micro-Venturi tube to drive the drug return flow, while avoiding excessive diversion that could affect the gas pressure in the main nebulization channel. When the ratio is within the range of 1:4 to 9, the negative pressure effect of the micro-Venturi tube and the airflow pressure of the main nebulization channel reach an optimal balance, ensuring both smooth drug return flow and that the particle size of the atomized particles meets the treatment requirements.

[0041] Furthermore, the shell, the collection plate, and the atomizing component are all made of plastic. Plastic materials offer advantages such as light weight, low cost, ease of processing, and corrosion resistance, effectively reducing the overall weight of the device and improving portability while meeting the hygiene requirements of medical devices. Specifically, the shell and collection plate are made of medical-grade polypropylene plastic, which has good rigidity and impact resistance, capable of withstanding collisions and drops during daily use; the container cup, conical sleeve, and guide tube in the atomizing component are made of medical-grade ABS plastic, which has good wear resistance and sealing performance; the cap is made of medical-grade PC plastic, which has high transparency, facilitating observation of the remaining medication level, and also has good pressure resistance and corrosion resistance. All plastic materials have undergone biocompatibility testing, meet the safety standards for medical devices, and will not cause harm to the human body.

[0042] The working principle of the bedridden nebulizer in this application is as follows:

[0043] 1. Drug solution addition and equipment assembly

[0044] Separate the cap from the assembly part, remove the cap, and pour the liquid medicine into the container cup. The amount of liquid medicine added should not exceed two-thirds of the container cup's volume to avoid overflow during atomization due to excessive liquid medicine. Then, assemble and tighten the cap and the assembly part so that the conical sleeve fits onto the air guide cone. At this time, a uniform drainage gap is formed between the conical sleeve and the air guide cone. The tightening force of the cap should be moderate to ensure that the width of the drainage gap meets the design requirements. It should not be too tight, resulting in a gap that is too small, nor too loose, resulting in a gap that is too large.

[0045] 2. Atomization process

[0046] Connect the inlet tube to an oxygen tube or a pressurized gas source. Adjust the pressure of the pressurized gas source to 0.2-0.3 MPa. This pressure range ensures that the particle size of the atomized particles remains stable within the effective treatment range of 1.0-5.0 μm. Pressurized oxygen or air enters the air delivery cone through the inlet tube and then exits at high speed through the apex of the cone. At this point, a negative pressure is created in the apex region due to the high gas flow rate, reaching a value of -0.02 to -0.08 MPa. The liquid in the container is then rapidly extracted through the drainage gap. Liquid medication is then... After passing through the drainage gap, the liquid is delivered to the top surface of the air-conducting cone, where it comes into contact with the high-speed airflow and impacts the bottom surface of the diffuser, dispersing into fine water droplets. These droplets are further atomized under the action of the high-speed airflow, forming aerosol particles that meet the treatment requirements. These aerosol particles diffuse through the top of the container cup into the inner cavity of the shell, filling the inner cavity with a uniform drug mist. After the drug mist mixes with oxygen, it flows out through the mist outlet tube for the patient to inhale. The outlet flow rate of the mist outlet tube is controlled at 3-8 L / min to ensure that the drug mist smoothly enters the respiratory tract with the patient's breathing airflow.

[0047] 3. Drug solution circulation and reflux process

[0048] During atomization, some incompletely atomized droplets adhere to the inner wall of the housing and slide down under gravity, eventually accumulating at the bottom of the V-shaped collection groove. The V-shaped collection groove design allows droplets to quickly converge, preventing them from remaining on the inner wall of the housing. Simultaneously, pressurized gas in the air inlet pipe is diverted into the micro Venturi tube through the air path branch, creating a negative pressure at the branch end of the micro Venturi tube. This negative pressure draws the residual drug solution at the bottom of the collection groove upward through the return pipe and sprays it onto the outer wall of the guide tube through the outlet end of the micro Venturi tube. The drug solution flows downward along the outer wall of the guide tube and eventually drips into the container cup, participating in the atomization process again, thus achieving drug recycling and minimizing drug residue. Through the action of the circulation and return system, the drug residue rate can be reduced to below 5%, which is lower than the residue rate of traditional atomizers.

[0049] 4. Mid-treatment fluid resuscitation procedures

[0050] If medication needs to be replenished during nebulization, there's no need to remove the cap. Simply rotate the handle to align the fan-shaped openings of the upper and lower caps, allowing medication to be injected into the nebulizer tube through the opening. The medication then flows sequentially through the nebulizer tube and the guide tube, then splits along both sides of the diffuser, finally dripping into the receiving cup, achieving mid-treatment replenishment and ensuring treatment continuity. It's best to interrupt the nebulization process and temporarily close the air inlet for mid-treatment replenishment, which effectively improves treatment efficiency, especially suitable for scenarios involving prolonged nebulization therapy.

[0051] The bedridden nebulizer described in this application has the following beneficial effects:

[0052] 1. Suitable for lying down positions, applicable in a wide range of scenarios.

[0053] This nebulizer features a triangular prism shell design with a flat bottom, allowing it to rest stably on the bed without needing to be upright. It perfectly accommodates patients in supine, lateral, and prone positions, solving the problem of inconvenience associated with using existing vertical nebulizers while lying down. It is especially suitable for the elderly, those recovering from surgery, those bedridden due to serious illness, and children. The flat design allows patients to maintain a comfortable lying posture during treatment without needing to adjust their position, effectively improving the patient's treatment experience.

[0054] 2. Zero spillage of the medicine, high safety performance.

[0055] The sealed design of the nebulizer's receiving cup and housing, combined with the droplet collection function of the V-shaped collection groove, effectively avoids the risk of medication spillage, prevents drug waste and safety hazards such as patient choking and suffocation, and improves the safety of the treatment process. The sealed design ensures that the nebulizer mist is completely delivered to the patient's respiratory tract through the nebulizer tube, avoiding environmental pollution and drug waste caused by nebulizer mist leakage; the V-shaped collection groove can collect all incompletely atomized droplets and recycle them through the reflux system, further reducing the possibility of medication spillage.

[0056] 3. Stable atomization effect and high drug delivery efficiency.

[0057] The synergistic effect of negative pressure drainage at the apex of the air-guiding cone and nebulization by the diffuser plate ensures a continuous supply and uniform atomization of the medication. The generated aerosol particles maintain a stable particle size within the effective range, allowing for precise deposition in the patient's respiratory tract and lungs, thus enhancing the therapeutic effect. Simultaneously, the design of the medication circulation and reflux system enables secondary atomization of residual medication, reducing drug residue and improving drug utilization. Stable atomization ensures precise drug delivery to the lesion site, improving treatment efficacy and reducing treatment ineffectiveness caused by substandard atomized particles.

[0058] 4. Easy to operate and low nursing burden.

[0059] The device can be used flat, eliminating the need for patients to hold it in a vertical position and reducing the burden on their limbs. Infusion can be administered without removing the cap; simply rotating the handle completes the process, making operation simple. The snap-fit ​​design of the casing facilitates easy opening of the internal cavity for cleaning, reducing the difficulty and workload for nursing staff. This simple and convenient operating procedure improves patient compliance, especially for elderly and pediatric patients who wish to operate the device independently, while also reducing the workload of nursing staff.

[0060] 5. Lightweight design, highly portable.

[0061] The casing, collection plate, and atomizing components are all made of plastic, effectively reducing the overall weight of the device. The net weight of the device remains within a relatively light range, maintaining the lightweight advantage of a handheld portable nebulizer, making it convenient for patients to use in home care, when traveling, and in mobile settings. The lightweight design allows patients to easily carry the device, making it suitable for various scenarios such as home, hospital, and travel, thus enhancing its practicality.

[0062] 6. Low cost and easy to promote.

[0063] This nebulizer features a simple structural design and easy-to-manufacture components. The use of plastic further reduces production costs, facilitating large-scale production and clinical application, and meeting the diverse needs of primary healthcare and home care. The simplified design reduces the number of parts, lowering production and assembly costs. Furthermore, the lower procurement cost of plastic compared to metal effectively controls the overall cost of the device, making it affordable for more patients.

[0064] To better understand and implement this application, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0065] Figure 1 This is a three-dimensional structural diagram of an exemplary bed-mounted nebulizer for use in this application;

[0066] Figure 2 This is a three-dimensional structural diagram of an exemplary bed-mounted nebulizer used in this application, taken from another perspective.

[0067] Figure 3 This is a perspective view of a bedridden nebulizer as exemplified in this application;

[0068] Figure 4 This is a cross-sectional view of an exemplary bedridden nebulizer used in this application;

[0069] Figure 5 This is a schematic diagram of the three-dimensional structure of a bedridden nebulizer after partial removal of the structure, as exemplary in this application.

[0070] Figure 6 for Figure 5 Side view of the structure shown;

[0071] Figure 7 This is a three-dimensional structural diagram of a portion of the atomizing component exemplified in this application;

[0072] Figure 8 for Figure 7 The front view of the structure shown. Detailed Implementation

[0073] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application 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, and therefore should not be construed as a limitation on this application. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0074] Please see Figures 1-8 As shown in the figure, this application provides a bedridden nebulizer, including a housing 10, a collection plate 60, a nebulizing assembly, an air inlet pipe 21, and a mist outlet pipe 22. The housing 10 is triangular prism in shape and has an inner cavity. The bottom surface of the housing 10 is flat, allowing it to be stably placed on a bed or table. The housing 10 is made of medical-grade polypropylene plastic, which has good rigidity, corrosion resistance, and biocompatibility, meets the safety standards for medical devices, and can withstand collisions and drops during daily use, while also being easy to disinfect and clean. The housing 10 is compact and easy to carry. The connecting surface A of the housing 10 located at the mist outlet pipe 22 adopts a snap-fit ​​design. The edge of the connecting surface A is provided with a snap-fit ​​step, and the corresponding side wall of the housing 10 is provided with a groove. The snap-fit ​​step and the groove cooperate to achieve a snap-fit ​​connection, so that the connecting surface A can be tightly snapped into the housing 10, and the connecting surface A can be easily opened without additional tools for easy cleaning of the inner cavity. Two liquid collecting plates 60 are obliquely fixed in the inner cavity of the housing 10. One side of the two liquid collecting plates 60 is fixed to the middle of the housing 10 by hot-melt welding, and the other side is also fixed to the middle of the bottom surface of the housing 10 by hot-melt welding. The two liquid collecting plates 60 are V-shaped, forming a V-shaped liquid collecting groove. The bottom of the liquid collecting groove is designed with a rounded transition to facilitate the collection of droplets and prevent droplets from remaining in the corners. The liquid collecting plates 60 are made of medical-grade polypropylene plastic, the same material as the housing 10, to ensure connection sealing and material compatibility. The liquid collecting plates 60 have good rigidity and can withstand the impact of droplets without deformation. The nebulizer assembly is installed at the top center of the housing 10 and placed in the center of the inner cavity of the housing 10, serving as the core component for nebulization. The air inlet pipe 21 passes through the left side wall of the housing 10 and connects to the nebulizer assembly. The air inlet pipe 21 is a rigid medical PVC pipe, ensuring smooth gas flow while fixing the nebulizer assembly in place. The connection between the air inlet pipe 21 and the housing 10 is achieved using a hot-melt welding process to ensure a tight seal and prevent gas leakage. The mist outlet pipe 22 is installed on the right side wall of the housing 10. The mist outlet pipe 22 is a flexible silicone tube, facilitating connection to a face mask or mouthpiece to adapt to different patient positions. The connection between the mist outlet pipe 22 and the housing 10 is a threaded connection, making disassembly and replacement convenient.

[0075] In other embodiments, the housing 10 is fixed as a whole, and the connecting surface A is non-removable and fixed together with the housing 10. The upper side of the liquid collecting plate 60 is fixed to the middle of the housing 10, the lower sides of the two liquid collecting plates 60 are fixed to each other, and the left and right sides of the liquid collecting plates 60 are fixed to the two sides of the housing 10 respectively, thus obtaining the structure shown in the figure.

[0076] The atomizing assembly includes a receiving cup 33, an air guide cone 31, a conical sleeve 32, a diffuser 35, a connector 34, a guide tube 36, a horn tube 37, a screw cap 40, a return tube 51, an air path branch tube 23, and a miniature Venturi tube 52. A tubular assembly part 11 is integrally formed in the center of the top of the housing 10. The inner wall of the assembly part 11 is smooth, facilitating connection with the screw cap 40. The screw cap 40 is securely fitted onto the assembly part 11 via a stepped ring and a stopcock. A silicone sealing ring (not shown) is provided between the screw cap 40 and the assembly part 11 to ensure sealing performance and prevent atomized drug leakage. The air guide cone 31 is integrally injection molded in the center of the receiving cup 33. The bottom end of the air guide cone 31 penetrates the bottom of the receiving cup 33, and one end of the air inlet pipe 21 is fixedly connected to the bottom of the air guide cone 31, thus communicating with the air inlet pipe 21. The conical sleeve 32 is movably fitted onto the air-guiding cone 31. The gap between the inner wall of the conical sleeve 32 and the outer wall of the air-guiding cone 31 is 0.1-0.6mm, forming a uniform drainage gap. The conical sleeve 32 is made of medical-grade ABS plastic, which has good wear resistance and sealing performance. The diffuser 35 is made of plastic. The area of ​​the bottom surface of the diffuser 35 is larger than the area of ​​the inner circle of the top surface of the conical sleeve 32, and the width of the diffuser 35 is larger than the diameter of the inner circle of the top surface of the conical sleeve 32. This allows the airflow and droplets rising from the drainage gap to fully impact the bottom surface of the diffuser 35. The diffuser 35 is fixed to the bottom end of the guide tube 36 and is located 3-9mm above the conical sleeve 32. It is used to disperse liquid drugs into fine water droplets. The surface of the diffuser 35 is polished to reduce the adhesion of the drug liquid to the surface. The conical sleeve 32 is fixedly installed on the guide tube 36 by two symmetrically distributed connectors 34. The connectors 34 are plastic connecting rods, which have high connection strength and do not obstruct the flow of air and liquid medicine. The connection between the connectors 34 and the conical sleeve 32 and the guide tube 36 is heat fusion welding to ensure a firm connection.

[0077] The guide tube 36 is located above the conical sleeve 32, and its inner wall features a smooth, rounded design to reduce the adhesion of the drug mist to the tube wall. The inner diameter of the guide tube 36 is larger than the width of the diffuser 35, ensuring that the lower part of the guide tube 36 is not completely blocked by the diffuser 35, and leaving space for the downward flow of the drug solution. The guide tube 36 is connected to the bottom end of the trumpet tube 37 by heat fusion welding. The trumpet tube 37 adopts a trumpet-shaped structure that is wider at the top and narrower at the bottom, enabling the drug mist to diffuse evenly during its ascent. The top surface of the trumpet tube 37 is fixedly connected to the bottom of the cap 40 by heat fusion. By tightening the cap 40, the trumpet tube 37, the guide tube 36, and the conical sleeve 32 can move downward together, achieving precise positioning of the drainage gap. The top surface of the container cup 33 is higher than the top surface of the air guide cone 31 and lower than the bottom surface of the guide tube 36. The volume of the container cup 33 is 25ml, which can meet the drug solution requirements of a single nebulization treatment. The inner diameter of the top ring of the container cup 33 is larger than the inner diameter of the assembly part 11, ensuring that the drug mist generated by nebulization can diffuse smoothly into the inner cavity of the shell 10.

[0078] Furthermore, the assembly method, dimensions, and working principle of the air guide cone 31, the conical sleeve 32, and the diffuser 35 can also adopt the same method as existing handheld atomizers.

[0079] One end of the gas path branch pipe 23 is fixed to the air inlet pipe 21 by hot-melt welding and is connected to the air inlet pipe 21. The inner diameter ratio of the gas path branch pipe 23 to the air inlet pipe 21 is 1:8, which meets the optimal ratio range of 1:4~9. The inlet end of the miniature venturi tube 52 is connected to the gas path branch pipe 23, and its branch end is connected to the return pipe 51. The miniature venturi tube 52 adopts a miniaturized design, which is small in size and has a significant negative pressure effect. The return pipe 51 is a flexible silicone tube. The other end of the return pipe 51 is placed at the bottom of the liquid collection tank to guide the liquid in the liquid collection tank into the miniature venturi tube 52. The outlet end of the miniature venturi tube 52 faces the outer wall of the guide tube 36, and the outlet end of the miniature venturi tube 52 is located above the receiving cup 33 to ensure that the returned medicine can be accurately sprayed onto the outer wall of the guide tube 36 and returned to the receiving cup 33.

[0080] The screw cap 40 includes an upper cover 42, a lower cover 41, and a handle 43. The upper cover 42 and the lower cover 41 are connected by a pivot made of wear-resistant plastic, which is flexible and not easily damaged. The handle 43 is integrally formed on the top of the upper cover 42, and the surface of the handle 43 is designed with an anti-slip texture for easy operation. The upper cover 42 and the lower cover 41 each have two fan-shaped openings with a central angle of 60°-80°. By rotating the handle 43, the upper cover 42 can be rotated, thereby opening or closing the two fan-shaped openings of the lower cover 41.

[0081] The housing 10, the liquid collection plate 60, the atomizing component's receiving cup 33, the air guide cone 31, the conical sleeve 32, the connector 34, the guide tube 36, the horn tube 37, and the screw cap 40 are all made of plastic. Among them, the housing 10, the liquid collection plate 60, and the receiving cup 33 are made of medical-grade polypropylene plastic, the conical sleeve 32, the connector 34, the guide tube 36, and the horn tube 37 are made of medical-grade ABS plastic, and the screw cap 40 is made of medical-grade PC plastic. All of them meet the hygiene and safety requirements of medical equipment.

[0082] The method of using the nebulizer in the bed-supported configuration of this embodiment is as follows:

[0083] 1) Preparation

[0084] Rotate the handle 43 to separate the cap 40 from the assembly part 11 of the housing 10, remove the nebulizer, and inject an appropriate amount of medication into the container cup 33, ensuring that the amount of medication does not exceed two-thirds of the volume of the container cup 33; then tighten the cap 40 and the assembly part 11 by screwing them together to ensure that a stable drainage gap is formed between the conical sleeve 32 and the air guide cone 31. The tightening force of the cap 40 should be such that there is no looseness after tightening; connect one end of the nebulizer tube 22 to the patient's face mask or mouthpiece, and the other end to the nebulizer outlet of the housing 10; connect the air inlet tube 21 to the oxygen cylinder or compressed air source and adjust the gas flow rate.

[0085] 2) Nebulizer therapy

[0086] When the gas source is turned on, pressurized gas enters the air guide cone 31 through the air inlet pipe 21, and is discharged at high speed through the cone tip, creating a negative pressure in the drainage gap. The negative pressure draws out the liquid medicine in the container cup 33 through the drainage gap. After the liquid medicine impacts the diffuser 35, it is atomized into aerosol particles and diffuses into the inner cavity of the shell 10. After the drug mist mixes with oxygen, it is delivered to the patient's respiratory tract through the mist outlet pipe 22 for the patient to inhale. During the nebulization process, the incompletely atomized droplets slide into the collection tank and, through the synergistic action of the return pipe 51 and the micro Venturi tube 52, flow back into the container cup 33 for re-nebulization. The entire nebulization process can meet the duration requirements of a single treatment.

[0087] 3) Replenish fluids midway through the treatment

[0088] If the medication is insufficient during treatment, there is no need to remove the cap 40. Simply rotate the handle 43 to align the fan-shaped openings of the upper cap 42 and the lower cap 41, and inject the medication through the openings. The medication will flow back into the container cup 33 along the trumpet tube 37 and the guide tube 36, ensuring the continuity of treatment. The fluid replenishment operation should be performed with the gas source turned off, which will not affect the nebulization effect during use.

[0089] 4) Equipment cleaning

[0090] After treatment, turn off the gas source, remove the mask or nozzle, open the snap-fit ​​connection surface A of the housing 10, rinse the inner cavity of the housing 10, the liquid collection plate 60, the atomizing component and other parts with clean water, disinfect with medical alcohol after rinsing, and let it dry before use to avoid cross-infection; for residual liquid that is difficult to clean, it can be soaked and rinsed with special medical cleaning solution to ensure that the equipment is clean and hygienic.

[0091] It should be noted that if the connecting surface A is detachable, then when the liquid collection plate 60 is assembled with the connecting surface A, a sealing strip needs to be installed on the side of the connecting surface A to improve the sealing effect of the gap between the connecting surface A and the liquid collection plate 60.

[0092] Industrial applicability.

[0093] The horizontal-type atomizer of this application has a reasonable structural design, is made of plastic, and has simple component processing technology. It can be mass-produced through conventional processes such as injection molding and hot-melt welding, resulting in low production costs. Specifically, components such as the shell 10, the liquid collection plate 60, and the container cup 33 can be mass-produced using injection molds, resulting in high production efficiency and good consistency; components such as the air inlet pipe 21, the mist outlet pipe 22, and the return pipe 51 can be produced using extrusion processes, resulting in low costs; and the assembly of the atomizing components can be completed through an automated production line, reducing labor costs and improving production efficiency.

[0094] Meanwhile, this nebulizer is designed for use in a supine position, addressing a core pain point of existing handheld portable nebulizers. It enjoys broad market demand and can be applied in various scenarios, including hospitals, community health centers, and home care, demonstrating significant industrial practicality and market promotion value. In hospital settings, this nebulizer can be used in geriatric wards, pediatric wards, and intensive care units, meeting the nebulization needs of different patients while supine. In home care settings, it can be used for daily treatment of patients with chronic respiratory diseases, improving treatment convenience. In mobile care settings, it can be used for emergency treatment during travel or business trips, meeting diverse patient needs.

[0095] Furthermore, this nebulizer exhibits a low drug residue rate, effectively saving treatment costs. It is also easy to operate and mastered by patients, improving treatment compliance and demonstrating significant social and economic benefits. In conclusion, the bedridden nebulizer described in this application possesses significant industrial applicability and is suitable for large-scale production and market promotion.

[0096] This application also provides a breathing synchronization trigger control method for using a nebulizer in bed. By installing a breathing sensor at the mist outlet inside the nebulizer housing 10, and combining the linkage between the electromagnetic control valve and the micro control module, the control logic of "starting air supply when breathing is detected and stopping when there is no breathing in a predetermined cycle" is realized, which reduces drug waste, ensures treatment continuity, and extends the service life of the equipment.

[0097] A breathing synchronization triggering control method for bedridden nebulizers, applied to the aforementioned bedridden nebulizer, is implemented based on an added breathing sensor, a micro-control module, and an electromagnetic control valve, and specifically includes the following steps:

[0098] Step 1: Hardware installation and assembly.

[0099] 1. Sensor Installation

[0100] A micro-groove is reserved on the inner wall of the mist outlet of the housing 10, and the probe of the differential pressure respiratory sensor (not shown) is embedded in the groove to ensure that the probe is parallel to the direction of the drug mist airflow.

[0101] A waterproof and breathable membrane is installed on the probe surface. The membrane is made of polytetrafluoroethylene, which allows gas to pass through and blocks the adhesion of drug mist droplets, preventing drug mist condensation from affecting the sensor's detection accuracy.

[0102] The sensor body is fixed to the empty area of ​​the inner wall of the housing 10 by a buckle, and the signal output terminal of the sensor is connected to the micro control module through a wire.

[0103] 2. Installation of electromagnetic control valve

[0104] A miniature electromagnetic control valve (not shown) is installed at the connection between the air intake pipe 21 and the air guide cone 31. The control end of the electromagnetic control valve is electrically connected to the miniature control module.

[0105] The electromagnetic control valve has a fast response speed, ensuring that it can quickly respond to breathing signals and realize timely start and stop of air supply.

[0106] 3. Control module integration

[0107] A PCB micro control module (not shown) is installed in the space of the outer wall of the housing 10. The control module integrates a signal processing unit, a valve driving unit, a breathing timing unit, and an abnormality handling unit.

[0108] The control module is connected to the breathing sensor and the solenoid control valve via wires. It can be powered by an external power source or a built-in lithium battery to meet the needs of portable use.

[0109] The respiratory timing unit is preset with a no-breathing determination cycle, with a default duration of 10 seconds, which can be adjusted within the range of 5-20 seconds according to clinical needs.

[0110] Step 2: Respiratory signal acquisition and activation trigger.

[0111] 1. Initial state

[0112] When the device is powered on, it is in standby mode, the electromagnetic control valve is closed by default, and the atomizing component is not working.

[0113] 2. Respiratory signal detection and initiation

[0114] When a patient is wearing a mask or mouthpiece in preparation for treatment, the airflow generated by the first inhalation or exhalation will enter the mist outlet of the housing 10 through the mist outlet tube 22, and the sensor probe will detect the air pressure change in the mist outlet in real time.

[0115] Regardless of whether a negative inhalation pressure signal or a positive expiratory pressure signal is detected, the signal processing unit of the control module determines that "effective breathing has been detected" and immediately sends an opening signal to the solenoid control valve.

[0116] When the electromagnetic control valve opens, pressurized gas enters the air guide cone 31 through the air inlet pipe 21, triggering the nebulizer to generate drug mist, which is then continuously delivered to the patient's respiratory tract through the mist outlet pipe 22.

[0117] 3. Continuous monitoring of respiratory signals

[0118] After the equipment starts supplying air, the sensor continuously collects the air pressure change signal inside the mist nozzle, and the breathing timing unit of the control module starts to work.

[0119] As long as any valid breathing signal (inhalation or exhalation) is detected within the no-breathing determination cycle, the breathing timing unit will reset the timing, keep the electromagnetic control valve open, and the nebulizer will continue to operate.

[0120] Step 3: Determination of no breathing and cessation of control

[0121] 1. No breath timer triggered

[0122] If the air pressure signal detected by the sensor tends to be stable, and no valid respiratory signal is collected within the no-breathing judgment period (default 10 seconds), the respiratory timing unit determines that "the patient has stopped treatment or been removed from the device".

[0123] 2. Execution of the gas supply stop command

[0124] The valve drive unit of the control module immediately sends a closing signal to the solenoid control valve. The solenoid control valve closes, the pressurized gas stops entering the gas guide cone 31, the atomizing component stops working, and the equipment returns to standby mode.

[0125] 3. Restart Trigger Conditions

[0126] After the device is in standby mode, if the sensor detects a valid breathing signal again, the startup process in step 2 will be repeated to restart the air supply and nebulization.

[0127] Step 4: Abnormal Status Handling

[0128] 1. Handling abnormal air pressure

[0129] When the air pressure value detected by the sensor exceeds the normal breathing air pressure range, the control module determines that the air pressure is abnormal, immediately closes the electromagnetic control valve and stops misting, and at the same time flashes the LED indicator light at a frequency of 2 times / second to remind the nursing staff to check the mask seal or equipment malfunction.

[0130] 2. Handling Power Supply Abnormalities

[0131] If a built-in lithium battery is used for power supply, when the battery voltage is lower than the threshold, the control module will prioritize stopping the gas supply and trigger a low battery alarm to avoid control failure due to insufficient voltage.

[0132] The effects of the breathing synchronization trigger control method are as follows.

[0133] 1) Reduce drug waste and ensure continuous treatment.

[0134] The system adopts the logic of "starting when breathing is detected and stopping when there is no breathing" to avoid frequent start-stop cycles of "inhalation to produce mist and exhalation to stop misting". This reduces the waste of ineffective misting after the patient is removed from the device and ensures the continuity of nebulization during breathing, thereby improving drug deposition efficiency.

[0135] 2) Extend the service life of equipment.

[0136] This reduces the start-stop frequency of the electromagnetic control valve, decreases the mechanical wear of valve components, extends the overall service life of the equipment, and lowers maintenance costs.

[0137] 3) Adapt to patients with different breathing rhythms.

[0138] It is well-suited for elderly and pediatric patients with unstable breathing rhythms, and will not cause treatment interruption due to brief exhalations or respiratory pauses, thus improving the patient's treatment experience and compliance.

[0139] 4) Low modification cost and strong adaptability.

[0140] The sensor and control module are both installed inside the housing 10. There is no need to change the external pipeline structure of the atomizer. It can be directly adapted to the production design of existing horizontal bed atomizers, with low modification cost and easy large-scale promotion and application.

[0141] Industrial applicability

[0142] The respiratory synchronization triggering control method proposed in this application is simple to install in hardware and has clear control logic. It can be directly integrated into the existing production process of bedridden nebulizers without significant adjustments to the production line. This method reduces drug waste, improves the continuity of treatment and extends the lifespan of the equipment, and is applicable to various scenarios such as hospitals and home care, with broad market prospects and industrial applicability.

[0143] The embodiments described above are merely examples of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application.

Claims

1. A bedridden nebulizer, characterized in that: Includes housing, liquid collection plate, atomizing assembly, air inlet pipe, and mist outlet pipe; The shell is in the shape of a triangular prism and has an inner cavity. Two liquid collecting plates are placed obliquely in the inner cavity. One side of the two liquid collecting plates is fixed to the middle of the shell, and the other side is fixed to the middle of the bottom surface of the shell, so that the two liquid collecting plates are V-shaped and form a V-shaped liquid collecting groove. The bottom surface of the shell is a plane; The atomizing component is mounted on the housing and positioned in the middle of the housing; The air intake pipe passes through one side of the housing and is connected to the atomizing component; The mist outlet pipe is installed on the other side of the housing.

2. The bedridden nebulizer according to claim 1, characterized in that: The atomizing assembly includes a receiving cup, an air guide cone, a conical sleeve, a diffuser, a connector, a guide tube, a horn tube, and a screw cap; A tubular assembly portion is formed in the middle of the top of the housing; the screw cap is fastened to this assembly portion; The air guide cone is installed in the middle of the container cup, with its bottom end penetrating through the container cup, and one end of the air inlet pipe is fixedly connected to the bottom of the air guide cone, so that the air inlet pipe communicates with the air guide cone. The conical sleeve is movably fitted onto the air guide cone; The diffuser is fixed to the bottom end of the guide tube and is located above the conical sleeve; The conical sleeve is fixedly installed on the guide tube by a connector; The guide tube is located above the conical sleeve and is connected to the bottom end of the horn tube; The top surface of the horn tube is fixedly connected to the screw cap; When the cap is securely installed on the assembly part, a drainage gap is formed between the conical sleeve and the air guide cone; this drainage gap is used to guide the liquid in the container cup to the top surface of the air guide cone under negative pressure.

3. The bedridden nebulizer according to claim 2, characterized in that: The air intake pipe is a rigid pipe, which fixes the receiving cup in the middle of the housing, and the receiving cup is coaxial with the assembly part; The upper part of the container cup communicates with the inner cavity of the housing, allowing the atomized liquid to diffuse within the inner cavity.

4. The bedridden nebulizer according to claim 2, characterized in that: The atomizing assembly also includes a return tube, an air path branch tube, and a miniature Venturi tube; One end of the air passage branch pipe is fixed to the air inlet pipe and is connected to the air inlet pipe; The inlet end of the miniature venturi tube is connected to the gas path branch pipe, and its branch end is connected to the return tank. The other end of the return pipe is placed at the bottom of the liquid collection tank; The return pipe is used to guide the liquid in the collection tank into the micro Venturi tube.

5. The bedridden nebulizer according to claim 4, characterized in that: The outlet end of the micro Venturi tube faces the outer wall of the guide tube, and the outlet end of the micro Venturi tube is located above the container cup.

6. The bedridden nebulizer according to claim 4, characterized in that: The screw cap includes an upper cap, a lower cap, and a handle; The upper cover and the lower cover are connected by a pivot, allowing the upper cover to rotate relative to the lower cover, and the handle is fixed to the upper cover; The upper cover and the lower cover each have two fan-shaped openings; by rotating the handle, the two openings of the lower cover can be opened or closed.

7. The bedridden nebulizer according to claim 6, characterized in that: The top surface of the container cup is higher than the top surface of the air guiding cone and lower than the bottom surface of the guide tube; The inner diameter of the top ring of the container cup is larger than the inner diameter of the assembly part.

8. The bedridden nebulizer according to claim 6, characterized in that: The connecting surface of the housing located on the mist outlet pipe is fastened to the housing to facilitate opening the inner cavity of the housing and cleaning the inner cavity.

9. The bedridden nebulizer according to claim 6, characterized in that: The ratio of the inner diameter of the air passage branch pipe to the inner diameter of the air intake pipe is 1:4~9.

10. The bedridden nebulizer according to claim 6, characterized in that: A breathing sensor is installed at the mist outlet inside the atomizer housing, and it also includes an electromagnetic control valve and a micro control module; The electromagnetic control valve is installed on the intake pipe, and the breathing sensor and the electromagnetic control valve are electrically connected to the microcontroller module.

Images