Atomizer for medical care

Abstract

The invention belongs to the technical field of medical instruments, and particularly discloses a medical care atomizer which comprises a counterweight base, a main machine arranged on one side of the counterweight base and an input pipe connected to the main machine. The breathing assisting cylinder and the breathing assisting cylinder are fixed above the balance weight base in a suspended mode, the three-way pipe is arranged between the breathing assisting cylinder and the breathing assisting cylinder, the double-channel breathing assisting atomization mechanism is in linkage fit with the breathing assisting cylinder and the breathing assisting cylinder, and the respiratory capacity adapting mechanism is used for driving the double-channel breathing assisting atomization mechanism to act. By arranging the auxiliary driving device, when a patient inhales, the inhalation valve can be actively opened, the exhalation valve can be actively closed, and auxiliary pushing force is applied to medicine mist; when the patient exhales, the opposite action is executed, and the exhaled air is guided to the filtering system, so that the accurate and synchronous opening and closing of the valve and the efficient conveying of the medicine mist can be realized even for a special patient with a weak respiratory function, the medicine waste is avoided, and the respiratory pressure of the patient is obviously reduced.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically referring to a nebulizer for medical care. Background Technology

[0002] Nebulized inhalation therapy is a core drug delivery method in the clinical treatment of respiratory diseases such as asthma, chronic obstructive pulmonary disease, and bronchitis. Its technical principle lies in using a specific nebulizer to transform liquid medication into micron-sized aerosol particles. Patients then inhale these drug-carrying particles directly into the airways and lung lesions through natural breathing, achieving targeted therapy. Compared to oral or injectable administration, this therapy has significant advantages such as rapid onset of action, high local drug concentration, significant efficacy, and fewer systemic side effects, thus finding widespread application in clinical practice.

[0003] However, most mainstream nebulizers on the market, whether traditional jet-type or ultrasonic, operate on a continuous nebulization mode. This means that once the device is activated, it continuously and constantly produces drug aerosols, regardless of whether the patient is in the inspiratory or expiratory phase. During the patient's expiratory phase and between respiratory cycles, a large amount of drug aerosol produced by the nebulizer escapes directly into the surrounding environment through the exhaust ports on the breathing mask or mouthpiece. This not only results in a significant waste of expensive medication, but the exhaled air and the escaped medication may also affect those around the patient.

[0004] To overcome these shortcomings, some designs incorporate valve systems, typically including inspiratory and expiratory valves. When the patient inhales, the negative pressure in the chest cavity opens the inspiratory valve, allowing the drug aerosol to be inhaled; when the patient exhales, the positive pressure airflow closes the inspiratory valve and simultaneously opens the expiratory valve, expelling waste gas. This design can reduce drug loss during the expiratory phase to some extent. However, such valves, especially one-way valves, have an inherent opening threshold pressure due to their structure. For special groups such as infants, the elderly, or patients with severe conditions, their spontaneous breathing ability is very weak, and the transmembrane pressure difference generated during inspiration and expiration is often insufficient to reliably trigger the opening and closing of these valves. This can lead to delayed valve response or even valve failure, not only failing to achieve the intended purpose of on-demand nebulization and drug conservation, but also significantly increasing the patient's respiratory resistance, causing discomfort, and in severe cases, even interfering with the normal course of treatment. Summary of the Invention

[0005] To address the above issues, this invention provides a nebulizer for medical care. By incorporating an auxiliary drive device, the nebulizer actively opens the inhalation valve and closes the exhalation valve when the patient inhales, applying an auxiliary pushing force to the nebulizer mist. Conversely, when the patient exhales, the nebulizer performs the opposite action, guiding the exhaled air to the filtration system. This ensures that even patients with weak respiratory function can achieve precise and synchronized valve opening and closing and efficient delivery of the nebulizer mist, thereby avoiding medication waste and significantly reducing the patient's respiratory stress.

[0006] The technical solution adopted by the present invention is as follows: The present invention proposes a nebulizer for medical care, including a counterweight base, a main unit disposed on one side of the counterweight base and an input tube connected to the main unit, and further including an inhalation aid and an exhalation aid suspended and fixed above the counterweight base, a three-way tube disposed between the inhalation aid and the exhalation aid, a dual-channel assisted breathing nebulization mechanism that is linked and cooperates with the inhalation aid and the exhalation aid, and a breathing volume adaptation mechanism for driving the action of the dual-channel assisted breathing nebulization mechanism.

[0007] Furthermore, the horizontal tube of the three-way connector is laterally connected to the upper end of the inhalation aid and exhalation aid, and the vertical tube in the middle of the three-way connector is connected to the breathing mask for direct contact with the patient.

[0008] Furthermore, the dual-channel assisted breathing nebulizer includes a horizontally arranged connecting rod, with both ends of the connecting rod extending below the inhalation aid and the exhalation aid, respectively. It also includes a first piston shaft fixed to one end of the connecting rod and extending upward into the inhalation aid, a first piston disc fixed to the top of the first piston shaft, a second piston shaft fixed to the other end of the connecting rod and extending upward into the exhalation aid, and a second piston disc fixed to the top of the second piston shaft.

[0009] Furthermore, the first piston disc is slidably sealed to the inner wall of the inhalation aid cylinder, and the second piston disc is slidably sealed to the inner wall of the exhalation aid cylinder. The lower ends of the inhalation aid cylinder and the exhalation aid cylinder are provided with pressure relief holes. The input pipe is connected to the side of the inhalation aid cylinder away from the three-way pipe and is set at the same height as the horizontal pipe of the three-way pipe. The side of the exhalation aid cylinder away from the three-way pipe is connected to an output pipe at the same height as the input pipe. The stroke of the first piston disc and the second piston disc is always located below the input pipe and the output pipe to ensure unobstructed airflow.

[0010] Furthermore, a first one-way valve is provided at the connection between the inhalation aid and the input tube, a second one-way valve is provided at the connection between the inhalation aid and the three-way tube, a third one-way valve is provided at the connection between the exhalation aid and the three-way tube, and a fourth one-way valve is provided at the connection between the exhalation aid and the output tube.

[0011] Furthermore, the unidirectional flow direction of the first one-way valve is from the input pipe to the inhalation aid cylinder, the unidirectional flow direction of the second one-way valve is from the inhalation aid cylinder to the three-way pipe, the unidirectional flow direction of the third one-way valve is from the three-way pipe to the exhalation aid cylinder, and the unidirectional flow direction of the fourth one-way valve is from the exhalation aid cylinder to the output pipe.

[0012] Furthermore, the breathing volume adaptation mechanism includes a servo motor fixed on a counterweight base and a turntable driven to rotate by the servo motor. A slide rail is provided in the middle of the connecting rod along the length direction, and a slide shaft is slidably provided in the slide rail.

[0013] Furthermore, a track groove is provided radially on the end face of the turntable, a slider is engaged and slidably mounted in the track groove, a sliding shaft is fixedly mounted on the slider, a radially extending screw is engaged and rotatably mounted in the track groove, the screw passes through the slider and is threadedly connected to the slider, and a worm gear is coaxially connected to the end of the screw.

[0014] Furthermore, the end of the track groove is rotatably provided with a worm gear that meshes with the worm wheel, and the end of the worm gear is fixedly provided with a knob for manually controlling the rotation of the worm gear.

[0015] Furthermore, a filter module is installed on the output pipe to filter the exhaled air and prevent the spread of germs.

[0016] The beneficial effects achieved by the present invention using the above structure are as follows: (1) This invention can effectively prevent the waste of expensive medicine and block the spread of pathogens. Through the alternating operation of the dual-channel assisted breathing nebulization mechanism, during the patient's exhalation phase, the drug aerosol generated by the main unit is not directly discharged, but is inhaled into the inhalation aid for temporary storage, and is pushed into the human body during the next inhalation, thus avoiding the waste of medicine. At the same time, the patient's exhaled waste gas is forcibly guided to the inhalation aid and is discharged after being processed by the filter module, effectively avoiding the pollution and harm to the surrounding environment and personnel caused by pathogens carried in the exhaled gas.

[0017] (2) This invention completely solves the problem of difficulty in opening traditional one-way valve systems by using mechanical external thrust. For infants or weak patients with weak spontaneous breathing and difficulty in generating sufficient transmembrane pressure difference to drive the valve, this invention drives the piston movement by a servo motor to actively generate high-intensity positive or negative pressure in the pipeline. This mechanical active intervention can instantly overcome the inherent opening threshold pressure of the first, second, third and fourth one-way valves, ensuring that the valve system can accurately and sensitively open and close synchronously as needed, no matter how weak the patient's breathing ability is, eliminating the risk of valve response delay or failure.

[0018] (3) The present invention has a forced push function, which can significantly reduce the respiratory load of patients and assist breathing. During inhalation, the positive pressure generated by the upward movement of the first piston disc forces the drug mist into the patient's airway; during exhalation, the negative pressure generated by the downward movement of the second piston disc actively draws out the exhaled waste gas. This bidirectional assist mechanism greatly reduces the respiratory work done by patients during treatment. Even patients with severe illness or respiratory muscle weakness can easily complete effective nebulized inhalation therapy.

[0019] (4) The present invention achieves the adjustment of respiratory volume through the respiratory volume adaptation mechanism. On the one hand, by adjusting the radial position of the sliding shaft on the turntable, the reciprocating stroke of the connecting rod and the piston can be changed, thereby accurately controlling the ventilation volume of a single respiratory cycle to adapt to the needs of patients of different ages and vital capacities. On the other hand, by utilizing the mechanical characteristics of the circular motion of the sliding shaft driving the linear motion of the connecting rod, the speed of the piston tends to be zero at the breathing switching point, while the speed reaches its maximum in the middle of the breathing. This speed change curve naturally fits the natural breathing pattern of the human body, eliminates the common sense of resistance of mechanical action, and greatly improves the patient's treatment comfort. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of a nebulizer for medical care proposed in this invention.

[0021] Figure 2 This is a schematic diagram showing the positional relationship between the exhalation chamber and the inhalation chamber of a nebulizer for medical care proposed in this invention.

[0022] Figure 3 This is a schematic diagram of the structure of a dual-channel assisted breathing nebulizer mechanism for medical care proposed in this invention.

[0023] Figure 4 This is a schematic diagram showing the structural relationship between the counterweight base and the servo motor of a nebulizer for medical care proposed in this invention.

[0024] Figure 5 for Figure 4 Sectional view of AA.

[0025] Figure 6 This is an exploded structural diagram showing the positional relationship between the slide and the turntable of a nebulizer for medical care proposed in this invention.

[0026] Figure 7 for Figure 6 Enlarged view of section B.

[0027] The components include: 1. Counterweight base; 2. Inhalation aid cylinder; 21. Pressure relief hole; 3. Exhalation aid cylinder; 4. Three-way tube; 5. Dual-channel assisted breathing nebulizer mechanism; 51. Connecting rod; 52. First piston shaft; 53. First piston disc; 54. Second piston shaft; 55. Second piston disc; 56. First one-way valve; 57. Second one-way valve; 58. Third one-way valve; 59. Fourth one-way valve; 6. Breathing volume adaptation mechanism; 61. Turntable; 62. Servo motor; 63. Track groove; 64. Slider; 65. Slide rail; 66. Slide shaft; 67. Screw; 68. Worm gear; 69. Worm; 7. Output tube; 71. Filter module; 8. Input tube; 81. Main unit; 9. Knob.

[0028] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0030] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "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 invention 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 invention.

[0031] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, the present invention proposes a nebulizer for medical care, which mainly consists of a counterweight base 1, an inhalation aid 2 and an exhalation aid 3 suspended and fixed above the counterweight base 1, a three-way tube 4 connecting the two, a dual-channel assisted breathing nebulization mechanism 5 that works in conjunction with the inhalation aid 2 and the exhalation aid 3, a breathing volume adaptation mechanism 6 for driving the mechanism, and a nebulization generating component.

[0032] The counterweight base 1 serves as the supporting foundation for the entire device. On one side of the base is a main unit 81 that generates nebulized medication. An input tube 8 is connected to the main unit 81. The inhalation aid 2 and the exhalation aid 3 are arranged vertically in parallel. A three-way tube 4 is located between the upper ends of the inhalation aid 2 and the exhalation aid 3. Specifically, the two ends of the horizontal tube of the three-way tube 4 are laterally connected to the upper sidewalls of the inhalation aid 2 and the exhalation aid 3, respectively, while the vertical tube in the middle of the three-way tube 4 extends upward and finally connects to the breathing mask for fitting the patient's face.

[0033] To achieve active assistance in the breathing process and precise delivery of medication, this invention provides a dual-channel assisted breathing nebulization mechanism 5. This mechanism includes a connecting rod 51 horizontally positioned below the inhalation aid 2 and the exhalation aid 3. One end of the connecting rod 51 is fixed with a vertically upward first piston shaft 52, and the top of the first piston shaft 52 is fixed with a first piston disc 53. The first piston disc 53 is located inside the inhalation aid 2 and slides and seals against the inner wall of the inhalation aid 2. The other end of the connecting rod 51 is fixed with a vertically upward second piston shaft 54, and the top of the second piston shaft 54 ​​is fixed with a second piston disc 55. The second piston disc 55 is located inside the exhalation aid 3 and slides and seals against the inner wall of the exhalation aid 3. To prevent air resistance from forming on the back of the piston during piston movement, pressure relief holes 21 are provided on the bottom surfaces of both the inhalation aid 2 and the exhalation aid 3 to balance the air pressure below the piston.

[0034] Regarding the connection and control of the fluid pipeline, the input pipe 8 is connected to the side of the inhalation aid 2 away from the three-way pipe 4, and the horizontal pipelines of the input pipe 8 and the three-way pipe 4 are at the same height plane. The side of the exhalation aid 3 away from the three-way pipe 4 is connected to the output pipe 7, and the output pipe 7 is set at the same height as the input pipe 8. It is worth noting that the reciprocating stroke of the first piston disc 53 and the second piston disc 55 in the cylinder is always located below the inlet of the input pipe 8 and the outlet of the output pipe 7 to ensure the unobstructed airflow channel. The end of the output pipe 7 is equipped with a filter module 71, which is used to filter the exhaled waste gas to prevent the spread of germs.

[0035] The key to this invention lies in controlling the airflow direction through a precise one-way valve system in conjunction with piston movement. Specifically: a first one-way valve 56 is provided at the connection between the inhalation aid 2 and the input pipe 8, with its one-way flow direction limited from the input pipe 8 to the inhalation aid 2; a second one-way valve 57 is provided at the connection between the inhalation aid 2 and the three-way pipe 4, with its one-way flow direction limited from the inhalation aid 2 to the three-way pipe 4; a third one-way valve 58 is provided at the connection between the exhalation aid 3 and the three-way pipe 4, with its one-way flow direction limited from the three-way pipe 4 to the exhalation aid 3; and a fourth one-way valve 59 is provided at the connection between the exhalation aid 3 and the output pipe 7, with its one-way flow direction limited from the exhalation aid 3 to the output pipe 7. The conduction direction of the above four one-way valves macroscopically presents a one-way flow trend from the input side to the output side.

[0036] To accommodate the respiratory volume needs of patients of different ages, physical conditions, and illnesses, this invention also includes a respiratory volume adaptation mechanism 6. This mechanism includes a servo motor 62 fixedly mounted on a counterweight base 1. The output shaft of the servo motor 62 is connected to a turntable 61. A long, narrow slide rail 65 is formed along the length of the connecting rod 51. A sliding shaft 66 is slidably fitted within the slide rail 65. This sliding shaft 66 is not directly fixed to the turntable 61, but is mounted on the turntable 61 via an eccentric adjustment assembly. Specifically, the turntable... A radially extending track groove 63 is provided on the end face of 61. A slider 64 is engaged and slidably mounted in the track groove 63. A sliding shaft 66 is fixedly mounted on the slider 64. A radially extending screw 67 is also engaged and rotatably mounted in the track groove 63. The screw 67 passes through the slider 64 and is threadedly connected to the slider 64. A worm gear 68 is coaxially connected to one end of the screw 67 near the center of the turntable 61. A worm 69 is rotatably mounted at the end of the track groove 63 and meshes with the worm gear 68. A knob 9 is fixedly mounted at the end of the worm 69 away from the turntable 61.

[0037] The specific work process is as follows: Preparation stage: Before use, medical staff need to adjust the breathing volume adaptation mechanism 6 according to the specific type of patient (such as children, adults, the elderly or critically ill patients). By manually rotating the knob 9, the worm gear 69 is driven to rotate, which in turn drives the worm wheel 68 and the screw 67 to rotate. Since the screw 67 is threadedly connected to the slider 64, the rotation of the screw 67 will drive the slider 64 to move radially in the track groove 63, thereby changing the eccentric distance between the sliding shaft 66 and the rotation axis of the turntable 61. This eccentric distance directly determines the stroke of the connecting rod 51 in the up and down reciprocating motion, thereby changing the gas volume discharged by the first piston disc 53 and the second piston disc 55 in a single stroke. That is, the precise adjustment of the single drug delivery volume and the exhaled gas capacity is achieved. At the same time, by adjusting the speed of the servo motor 62, the rotation frequency of the turntable 61 can be changed, thereby adapting to the breathing frequency of different patients. One rotation of the turntable 61 corresponds to one complete inhalation and exhalation cycle of the patient.

[0038] Inhalation Phase: In the initial state, the connecting rod 51 is adjusted to the lowest position of its stroke by controlling the servo motor 62. After the device is ready and the patient is wearing the breathing mask, the servo motor 62 is started, and the patient is guided to begin inhalation. As the sliding shaft 66 slides within the slide rail 65, it pushes the connecting rod 51 upward, causing the first piston disc 53 and the second piston disc 55 to move upward synchronously. At this time, the first piston disc 53 pushes upward to compress the gas in the inhalation aid cylinder 2, creating a positive pressure inside. This positive pressure causes the first one-way valve 56 to close (cutting off the passage to the main unit 81), while simultaneously opening the second one-way valve 57. At the same time, the second piston disc 55 pushes upward. The compressed gas in the exhalation aid cylinder 3 causes the third one-way valve 58 to close (cutting off the passage to the breathing mask), while simultaneously opening the fourth one-way valve 59. The gas in the inhalation aid cylinder 2 (the first cycle may be air, and subsequent cycles are nebulized medication) enters the three-way tube 4 through the second one-way valve 57. Since the third one-way valve 58 is closed at this time, the gas can only move upwards along the vertical tube of the three-way tube 4 and is forcibly pushed into the breathing mask for the patient to inhale, thus realizing the "inhalation aid" function. At the same time, the residual gas in the exhalation aid cylinder 3 (subsequently the waste gas from the previous exhalation) is pushed into the output tube 7 through the fourth one-way valve 59, and discharged after being filtered by the filter module 71.

[0039] During the exhalation phase: When the connecting rod 51 reaches its highest point, it begins to move downwards. At this time, the patient also switches to exhalation. The connecting rod 51 drives the first piston disc 53 and the second piston disc 55 to move downwards synchronously. At this time, negative pressure is generated in both cylinders. In the inhalation aid cylinder 2, the negative pressure causes the second one-way valve 57 to close and the first one-way valve 56 to be drawn open. The nebulized medication generated by the main unit 81 is drawn into the inhalation aid cylinder 2 through the input tube 8 and stored to prepare for the next inhalation. In the exhalation aid cylinder 3, the negative pressure causes the fourth one-way valve 59 to close and the third one-way valve 58 to be drawn open. The patient's exhaled gas enters through the three-way tube 4. Since the second one-way valve 57 is closed, the exhaled gas can only be drawn into the exhalation aid cylinder 3 through the third one-way valve 58 and stored, thus realizing the "exphalation aid" function and effectively reducing the patient's exhalation resistance.

[0040] It is particularly important to note that this invention utilizes the mechanical characteristics (similar to a sine mechanism) of the sliding shaft 66 driving the connecting rod 51 in linear reciprocating motion through circular motion. This causes the piston's vertical translation speed to gradually decrease to zero when it reaches its upper and lower extreme positions (i.e., the switching point between inhalation and exhalation). In the middle of the stroke (i.e., the peak of inhalation or exhalation), the movement speed reaches its maximum. This speed change pattern perfectly matches the flow rate pattern of natural human respiration (i.e., the respiratory flow rate is zero at the beginning and end, and fastest in the middle), thereby greatly improving the patient's comfort and avoiding the sense of resistance caused by mechanical movement.

[0041] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

[0043] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A nebulizer for medical care, comprising a counterweight base (1), a main unit (81) disposed on one side of the counterweight base (1), and an input tube (8) connected to the main unit (81), characterized in that: It also includes an inhalation aid (2) and an exhalation aid (3) suspended and fixed above the counterweight base (1), a three-way tube (4) located between the inhalation aid (2) and the exhalation aid (3), a dual-channel assisted breathing nebulizer (5) that works in conjunction with the inhalation aid (2) and the exhalation aid (3), and a breathing volume adaptation mechanism (6) for driving the dual-channel assisted breathing nebulizer (5). The horizontal tube of the three-way tube (4) is laterally connected to the upper end of the inhalation aid (2) and the exhalation aid (3), and the vertical tube in the middle of the three-way tube (4) is connected to the breathing mask; The dual-channel assisted breathing nebulizer (5) includes a horizontally arranged connecting rod (51), with both ends of the connecting rod (51) extending to the bottom of the inhalation aid (2) and the exhalation aid (3), and also includes a first piston shaft (52) fixed to one end of the connecting rod (51) and extending upward into the inhalation aid (2), a first piston disc (53) fixed to the top of the first piston shaft (52), a second piston shaft (54) fixed to the other end of the connecting rod (51) and extending upward into the exhalation aid (3), and a second piston disc (55) fixed to the top of the second piston shaft (54).

2. The nebulizer for medical care according to claim 1, characterized in that: The first piston disc (53) is slidably sealed to the inner wall of the inhalation aid (2), and the second piston disc (55) is slidably sealed to the inner wall of the exhalation aid (3). The lower ends of the inhalation aid (2) and the exhalation aid (3) are provided with pressure relief holes (21). The input pipe (8) is connected to the side of the inhalation aid (2) away from the three-way pipe (4) and is set at the same height as the horizontal pipeline of the three-way pipe (4). The side of the exhalation aid (3) away from the three-way pipe (4) is connected to an output pipe (7) at the same height as the input pipe (8). The stroke of the first piston disc (53) and the second piston disc (55) is always below the input pipe (8) and the output pipe (7).

3. A nebulizer for medical care according to claim 2, characterized in that: A first one-way valve (56) is provided at the connection between the inhalation aid (2) and the input pipe (8), a second one-way valve (57) is provided at the connection between the inhalation aid (2) and the three-way pipe (4), a third one-way valve (58) is provided at the connection between the exhalation aid (3) and the three-way pipe (4), and a fourth one-way valve (59) is provided at the connection between the exhalation aid (3) and the output pipe (7).

4. A nebulizer for medical care according to claim 3, characterized in that: The first one-way valve (56) has a one-way flow direction from the input pipe (8) to the inhalation aid (2), the second one-way valve (57) has a one-way flow direction from the inhalation aid (2) to the three-way pipe (4), the third one-way valve (58) has a one-way flow direction from the three-way pipe (4) to the exhalation aid (3), and the fourth one-way valve (59) has a one-way flow direction from the exhalation aid (3) to the output pipe (7).

5. A nebulizer for medical care according to claim 4, characterized in that: The breathing volume adaptation mechanism (6) includes a servo motor (62) fixed on the counterweight base (1) and a turntable (61) driven to rotate by the servo motor (62). A slide rail (65) is provided in the middle of the connecting rod (51) along the length direction, and a slide shaft (66) is slidably provided in the slide rail (65).

6. A nebulizer for medical care according to claim 5, characterized in that: The turntable (61) has a radially arranged track groove (63) on its end face. A slider (64) is engaged and slidably mounted in the track groove (63). A sliding shaft (66) is fixedly mounted on the slider (64). A radially extending screw (67) is engaged and rotatably mounted in the track groove (63). The screw (67) passes through the slider (64) and is threadedly connected to the slider (64). A worm gear (68) is coaxially connected to the end of the screw (67).

7. A nebulizer for medical care according to claim 6, characterized in that: The end of the track groove (63) is rotatably provided with a worm (69) that meshes with a worm wheel (68), and the end of the worm (69) is fixedly provided with a knob (9).

8. A nebulizer for medical care according to claim 7, characterized in that: The output tube (7) is equipped with a filter module (71) for filtering the exhaled gas.

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