Handheld drug aerosol delivery device

Abstract

The utility model provides a handheld drug aerosol delivery device which has the characteristic of compact structure and is provided with a shell, a cavity with an opening in the top is defined in the shell, and an air inlet is formed in the bottom of the shell; the medicine bomb is suitable for generating medicine aerosol; the ammunition sleeve is suitable for containing the ammunition; the control panel extends in a gap formed between the side surface of the ammunition sleeve and the shell; the flow generator is arranged on the side, away from the opening, of the ammunition sleeve; wherein the outer shape of the shell is configured to be suitable for being held by a hand, and a power source is configured in an air inlet gap formed between the air inlet of the shell and the flow generator. The device has the advantages of being compact in structure, small in size, convenient to carry and convenient for a user to hold and operate.

Description

Technical Field

[0001] The utility model relates to the technical field of atomization drug delivery, in particular to a handheld drug aerosol delivery device. Background Art

[0002] Nasal / oral inhalation is a very special route of administration that can be used to prevent and treat diseases of the central nervous system, respiratory system and other areas. (1) Studies have confirmed that there is a direct anatomical channel between brain tissue and nasal cavity. Intranasal administration bypasses the blood-brain barrier and directly delivers drugs to the brain non-invasively. That is, drugs can reach the central nervous system through the olfactory epithelium or respiratory epithelium of the nasal mucosa, quickly enter the brain tissue and interact with relevant receptors to produce therapeutic effects. The nose-brain connection can also trigger and regulate the olfactory-amygdala neural circuit by activating peripheral nasal chemosensory neurons without the need for drugs to directly bind to neuronal receptors in the brain central nervous system, thereby limiting the transport of molecules to the blood circulation system and minimizing the potential systemic exposure of drugs. Regardless of the mechanism, its characteristics are to avoid the blood-brain barrier, alveolar blood-gas barrier, liver first-pass effect and gastrointestinal metabolism, so the required dose is the lowest (10-6-10-12g), the onset is the fastest (a few seconds), the systemic toxicity and side effects are the lowest, and the compliance is the best. (2) Studies have confirmed that lung absorption is also a good route of administration. The characteristics of lung-targeted drugs are: large absorption surface area, rich capillary network, and thin alveolar gas-blood barrier, which can avoid gastrointestinal metabolism and liver first-pass effect; lower doses than oral and injection administration, faster onset, less systemic toxicity and side effects, and better compliance. (3) Studies have confirmed that other non-central nervous system and non-respiratory system drugs can also achieve better prevention and treatment effects of diseases through nasal / oral atomization inhalation administration, such as peptide diabetes drugs that require frequent injections, osteoporosis drugs, hormone drugs, and other oral and injectable drugs that require rapid onset. Improvement into an inhalation dosage form to meet user needs has very practical significance.

[0003] Nebulizer inhalation dosage forms refer to preparations in which drugs are administered using a special device and inhaled through the deep respiratory tract, cavities, mucous membranes, etc. to exert local or systemic therapeutic effects, thereby achieving the purpose of painless, rapid and effective treatment.

[0004] Respiratory inhalation compositions can be divided into liquid nebulizer inhalers, metered dose inhalation aerosols, dry powder inhalers and soft mists. Liquid nebulizer inhalers, as a specific dosage form for respiratory administration, are usually aqueous solutions. A specific device is used to convert the nebulized inhaled drug into an aerosol for the user to inhale. The inhaled dose is deposited at different lesion sites in the respiratory tract at a certain rate and appropriate particle size. The particle size of the aerosol has been widely studied by researchers as the main factor affecting the deposition site of respiratory administration; another factor is the user's inhalation strength and breathing habits. The same nebulizer and nebulizer will have different inhalation doses and drug deposition in different sites for different users, thus producing different therapeutic effects. Aerosols, dry powder inhalers and soft mists have the same problem of inaccurate nebulization dose, inhalation dose and deposition site.

[0005] Most existing handheld atomizers are cylindrical in structure and relatively large in size. In order to facilitate the patient to inhale the medicine, a mouthpiece is usually provided for the patient to inhale through the mouth or a mask is used for the patient to inhale. For example, a Chinese patent with the announcement number CN213191829U discloses a handheld portable respiratory therapy device, including a medicine cup, a handle and an inhalation mask. The respiratory therapy device in the patent uses an inhalation mask for the patient to inhale the medicine, which not only increases the size of the device, but also increases the number of equipment to be carried. In addition, the inhalation mask is exposed to the outside, which is prone to increase the risk of external contamination. Therefore, it is necessary to overcome the problems existing in the prior art. Utility Model Content

[0006] In order to solve the problems existing in the prior art, the utility model provides a handheld drug aerosol delivery device, which has the characteristics of compact structure and an aerosol nozzle is arranged on the top, so that the patient can inhale by nose. It not only reduces the size of the device and makes the external shape of the device suitable for hand holding, but also facilitates the protection of the aerosol nozzle to avoid contamination. It has the advantages of safe use and easy carrying.

[0007] The utility model adopts the following technical solution: a handheld drug aerosol delivery device, which has the characteristics of compact structure and has:

[0008] The housing defines a cavity with an opening at the top and an air inlet at the bottom;

[0009] A drug cartridge adapted to generate a drug aerosol;

[0010] a cartridge case adapted to receive the cartridge;

[0011] a control plate extending in a gap formed between a side of the cartridge case and the housing; and

[0012] a flow generator, which is arranged on a side of the cartridge case facing away from the opening;

[0013] The outer shape of the housing is configured to be suitable for being held by hand, and a power source is arranged in an air inlet gap formed between the air inlet and the flow generator.

[0014] The above technical solution can be further improved as follows:

[0015] Furthermore, the top of the bullet is provided with an aerosol nozzle, and the aerosol nozzle protrudes from the opening.

[0016] Furthermore, the number of the aerosol nozzle is one or two, so as to be suitable for oral and nasal inhalation administration.

[0017] Furthermore, a sealing cover which can be turned over along a set axis is arranged on the top of the shell, and a protective cavity suitable for accommodating the aerosol nozzle is defined between the sealing cover and the shell.

[0018] Furthermore, the ammunition can be taken out of or loaded into the ammunition sleeve through the opening.

[0019] Furthermore, a user interface is arranged on the side wall of the shell, and the control panel is inserted between the user interface and the ammunition cartridge sleeve.

[0020] Furthermore, the user interface includes operation keys and a display unit.

[0021] Furthermore, the display part is an LED lamp or a display screen.

[0022] Furthermore, the flow generator is a fan, and a wind gathering cover is arranged between the flow generator and the ammunition sleeve.

[0023] Furthermore, a charging device is disposed at the bottom of the housing, and at least a portion of the charging device is received in the air inlet gap.

[0024] Due to the adoption of the above technical solution, the utility model has the following technical effects:

[0025] The device arranges the structures and installation positions of the drug cartridge, control panel, flow generator and power source in a reasonable manner, so that the installation of each component is more compact, and the device has the characteristics of compact structure. The outer shape of the shell is constructed to be suitable for hand holding, which is convenient for patients to hold when inhaling medicine. An aerosol nozzle suitable for nasal inhalation of the patient is arranged on the top of the drug cartridge, which not only facilitates the patient to inhale through the nose, but also further reduces the size of the device. The aerosol nozzle can also be protected by a sealing cover to prevent the aerosol nozzle from being exposed to the outside and contaminated, making it safer to use and convenient to carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present utility model, rather than limiting the present utility model.

[0027] Figure 1 is a schematic diagram of a drug aerosol delivery device having an LED light.

[0028] Figure 2 yes Figure 1 Schematic diagram of the structure in the open cover state.

[0029] Figure 3 It is a schematic diagram of the structure of the drug aerosol delivery device with the left shell removed.

[0030] Figure 4 It is a schematic diagram of the structure of the drug aerosol delivery device with the right shell removed.

[0031] Figure 5 is an exploded schematic diagram of a drug aerosol delivery device.

[0032] Figure 6 is a front cross-sectional view of a drug aerosol delivery device.

[0033] Figure 7 It is the main cross-sectional view of the cartridge and the cartridge case.

[0034] Figure 8 It is a schematic diagram of the structure of the bullet.

[0035] Fig. 9 It is a cross-sectional view of the bullet.

[0036] Fig.10 This is a schematic diagram of the decomposition of the bullet.

[0037] Fig.11 is a schematic diagram of a drug aerosol delivery device having a display screen.

[0038] Fig.12 It is the distribution diagram of aerosol particles output by the bullet.

[0039] Explanation of the reference numerals: 1-sealing cover; 2-housing; 2a-left shell; 2b-right shell; 2c-air inlet; 3a-LED lamp; 3b-display screen; 4-operation key; 5-cartridge; 5a-cartridge shell; 5a1-aerosol nozzle; 5a2-aerosol channel; 5b-medicine liquid holding part; 5d-atomizer; 5e-sealing base; 5e1-air inlet; 5f-electrode part; 6-cartridge sleeve; 6a-positioning hole; 6b-conductive connector; 7-wind gathering hood; 8-flow generator; 9-control panel; 10-power source; 11-charging device. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings. The components of the embodiments of the utility model described and shown in the drawings herein can be arranged and designed in various different configurations. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0041] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0042] Unless otherwise defined, the technical terms or scientific terms used in this patent document shall be the common meanings understood by people with ordinary skills in the field to which the utility model belongs. The words "first", "second" and similar words used in the utility model patent specification and claims do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one", "one" or "the" do not indicate a quantity limit, but indicate the existence of at least one. Words such as "include" or "comprise" mean that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. "Center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. It is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0043] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the features of the following embodiments can be combined with each other.

[0045] See also Figures 1 to 12As shown, the utility model relates to a handheld drug aerosol delivery device, which has the characteristics of compact structure, suitable for being held in the hand of the user, and convenient to carry. The device comprises a shell 2, a drug cartridge 5, a drug cartridge cover 6, a control panel 9 and a flow generator 8, wherein the drug cartridge 5, the drug cartridge cover 6, the control panel 9 and the flow generator 8 are all received in the shell 2. Specifically, the outer shape and size of the shell 2 are configured to be suitable for hand holding, which is convenient for the user to hold and use; a cavity with an opening at the top is defined inside, an air inlet 2c is formed at the bottom, and a power source 10 is arranged in the air inlet gap formed between the air inlet 2c and the flow generator 8, and ... The bullet 5, the control board 9 and the flow generator 8 are all electrically connected to the power source 10; wherein, the drug bullet 5 is suitable for generating drug aerosol; the drug bullet cover 6 is suitable for receiving the drug bullet 5; the flow generator 8 is configured on the side of the drug bullet cover 6 away from the opening, and is suitable for generating air flow and conveying it into the drug bullet 5 to achieve the delivery of drug aerosol; the control board 9 extends in the gap formed by the side of the drug bullet cover 6 and the shell 2, which can reasonably utilize the internal space, making the overall structure of the device more compact and smaller in size, and convenient for users to carry.

[0046] like Figure 1-7 As shown, in this embodiment, the size and dimensions of the drug cartridge 5 are configured to be detachably assembled in the drug cartridge sleeve 6, and the drug cartridge sleeve 6 is installed in the housing 2. The top of the drug cartridge sleeve 6 also has an opening, so that the drug cartridge 5 can be loaded into or taken out of the drug cartridge sleeve 6 through the opening, which is convenient for users to replace the drug cartridge 5. For users, it is very necessary to be able to conveniently replace the drug cartridge 5. Users can use the same main body to replace the drug cartridge 5 of different drugs for atomization drug administration, reducing the cost of use. Figure 8-10 As shown, in the present embodiment, the drug cartridge 5 comprises a drug cartridge case 5a, an atomizer 5d and a base, wherein the base is detachably arranged at the bottom of the drug cartridge case 5a, the drug cartridge case 5a and the base define a drug storage bin together, and the atomizer 5d is positioned in the drug cartridge case 5a to atomize the drug. In the present embodiment, the drug is loaded into the drug storage bin in a solid or liquid form, and specifically can be mixed with a solid auxiliary material to form a solid preparation (only applicable to heating atomization) or dissolved in a solvent to form an atomizable drug liquid, and then filled into the drug storage bin, or a drug liquid holding portion 5b is installed in the drug storage bin, such as a cotton core, porous ceramics, an adsorbent and other liquid-absorbing porous materials. In order to prevent the drug liquid from being ineffective for a long time, the drug and the atomizing solvent can be packaged separately, and the isolation membrane is evacuated during use, and the drug is dissolved in the atomizing solvent, thereby extending the service life of the drug.

[0047] like Figure 2-11As shown, the top of the drug shell 5a has an aerosol nozzle 5a1 extending upward, and the aerosol nozzle 5a1 protrudes from the opening. The aerosol nozzle 5a1 is one or two, which are respectively suitable for oral and nasal administration; an air inlet hole 5e1 is formed on the base, and the air inlet hole 5e1 can receive the air flow generated by the flow generator 8, and an aerosol channel 5a2 is formed between the aerosol nozzle 5a1 and the air inlet hole 5e1, which can allow the air flow to flow through and deliver the aerosol drug to the patient. In the present embodiment, there are two aerosol nozzles 5a1, one on the left and one on the right, which cooperate with the nostrils respectively. Therefore, the aerosol precision delivery device in this embodiment is mainly based on nasal delivery, inducing the central nervous system through the nasal mucosa and the nasal olfactory bulb, and treating diseases related to emotional and mental aspects. The delivery device of the utility model can actively deliver drugs according to the needs of users, solving the problem that some users are unable to actively inhale the appropriate dose of drugs and control the deposition site of drugs due to insufficient breathing strength. The aerosol precision delivery device in this embodiment achieves accurate and timely treatment of users or self-help of users through active targeted drug administration (active drug administration through the nasal cavity and respiratory tract). The awakening of anesthetized patients after surgery can usually only be achieved by injecting drugs; or when an emergency attack of type I allergic reaction causes breathing difficulties, patients usually implement self-help by injecting spare drugs. The aerosol precision delivery device in this embodiment can completely replace injection drug administration through active nasal and respiratory tract drug administration. The outlet diameter D of the aerosol nozzle 5a1 is 1.0mm≤D≤3.5mm. The aerosol nozzle 5a1 within this diameter range can achieve a balance between the amount of fog and the speed of fog, avoiding the problem of trapped air caused by the aerosol nozzle 5a1 being too small, and when the aerosol nozzle 5a1 is large, the force of the fog is insufficient and it is impossible to effectively administer drugs to the user. At the same time, the above diameter setting can also ensure that the aerosol nozzle 5a1 fits the nasal cavity, improving the comfort of use. Specifically, the diameter D of the aerosol nozzle 5a1 is 2.5mm, and can also be any value in the range of 1.0mm≤D≤3.5mm. The inner side of the aerosol nozzle 5a1 is configured to be a cone that can gather the aerosol so as to fit the nostril, prevent leakage, and improve the aerosol delivery accuracy. It should be noted that the above-mentioned trapped air means that the aerosol cannot flow out effectively because the outlet flow rate is less than the aerosol output flow rate, and it seems to be trapped in the aerosol channel, which reduces the delivery accuracy.

[0048] It should be noted that the atomizer 5d in the utility model is a heating atomizer device or an ultrasonic atomizer device. For drugs with excellent thermal stability, the solid drug preparation can be directly heated or prepared into a liquid atomizer and then heated to evaporate and atomize into an aerosol. Since some drugs are unstable at high temperatures and easily decompose and become ineffective, ultrasonic atomizer devices are more advantageous than heating atomizer devices for thermally unstable drugs. The heating atomizer device is a heating element (solid atomizer), a ceramic core or a cotton core heating atomizer 5d (liquid atomizer). Similar heating atomization methods have been widely used in the electronic cigarette industry; the ultrasonic atomizer device is a piezoelectric ceramic atomizer 5d or a mesh atomizer 5d. Ultrasonic atomization is also a conventional atomization method, which is widely used in the medical and beauty industries, and its specific structure will not be described in detail.

[0049] Since the atomizer 5d is arranged in the drug cartridge 5a, in order to supply electric energy to the atomizer 5d, an electrode portion 5f for transmitting electric energy to the atomizer 5d is embedded in the sealing base 5e. Figure 6-7 As shown, there are two electrode parts 5f, which are metal parts embedded in the sealing base 5e, or other objects that can conduct electricity. The bottom of the drug cartridge sleeve 6 has a conductive connector 6b electrically connected to the control device. The conductive connector 6b has two conductive connectors 6b connected to the electrode parts 5f in a one-to-one correspondence. When the drug cartridge 5 is assembled in the drug cartridge sleeve 6, the electrode parts 5f in its base are in contact with the conductive connector 6b to achieve circuit communication, so that the operation of the drug cartridge 5 can be controlled by the control device to generate a set dose of drug aerosol. In order to ensure the electrical coupling effect between the conductive connector 6b and the electrode parts 5f, the conductive connector 6b in this embodiment adopts an elastic conductive connector 6b. When the drug cartridge 5 is installed in the drug cartridge sleeve 6, the conductive connector 6b can always be electrically coupled with the electrode parts 5f.

[0050] like Figure 4-6 As shown, in this embodiment, the flow generator 8 is a fan, and a wind gathering hood 7 is arranged between the flow generator 8 and the drug cartridge cover 6. The wind gathering hood 7 has a conical cavity for gathering air flow at one end close to the flow generator 8, and has an air duct at one end close to the drug cartridge cover 6. The bottom of the drug cartridge cover 6 has a positioning hole 6a, and the bottom of the drug cartridge 5 has an air inlet 2c. The air outlet end of the air duct is inserted into the positioning hole 6a and docked with the air inlet 2c. The conical cavity can efficiently gather the air flow generated by the flow generator 8, and transport the air flow to the drug cartridge 5 through the air duct, so as to deliver the drug aerosol generated by the drug cartridge 5 to the patient's respiratory tract.

[0051] In order to achieve precise drug delivery, the drug cartridge 5 of the utility model is configured to be able to controllably output atomized particles with a particle size range of 20nm to 20μm, and aerosols of different particle sizes will be deposited in the corresponding respiratory tract to implement targeted drug delivery of part or all of the respiratory tract. The respiratory tract is divided into upper and lower parts: the nose, pharynx, and larynx are collectively referred to as the upper respiratory tract. The trachea, bronchi, and lung organs are collectively referred to as the lower respiratory tract, or the tracheal tree. After research by the utility model inventor, atomized particles of different particle sizes are deposited in different positions in the respiratory tract. As long as the particle size of the atomized particles is controlled, the drug can be administered to different respiratory tract positions, thereby achieving precise drug delivery. For heating cotton core atomizers, the size of the atomized particles can be adjusted by controlling the viscosity of the atomizer, the power of the heating element, and the size of the airflow. For ceramic core atomizers, the size of the atomized particles can be adjusted by controlling the viscosity of the atomizer, the size of the porous ceramic aperture, the power of the heating element, and the airflow velocity, but for ultrasonic atomizers, the particle size of the atomized particles must be controlled by a mesh screen to control the aerosol particle size. Fig.12 This is the distribution diagram of aerosol particles output by the cartridge 5 measured by professional instruments. Fig.12 As shown, the bar graph in the figure represents the probability of aerosol appearing in different particle size ranges, and the wavy line represents the percentage of aerosol amount within the particle size range. It can be seen from the figure that the particle size range of the aerosolized particles generated by the atomization device in this example is generally 1 to 10 μm, and the amount of aerosol within this range is close to 100%, and is approximately normally distributed. Furthermore, the proportion of fog particles in the particle size range of 1 to 5 μm is about 60%, which not only ensures the stability of the particle size output, but also the aerosolized particles in this particle size range can be deposited in the patient's lungs, thereby achieving precise drug delivery and improving the effect of drug treatment. It should be noted that the above-mentioned professional instruments and equipment can use the PSA series laser particle size analyzer produced by Anton Paar, which uses dynamic light scattering technology for measurement. Dynamic light scattering (DLS) is a physical technology used to characterize the particle and molecular size in suspensions or solutions.

[0052] Accordingly, the flow generator 8 can generate a set amount of positive pressure airflow, specifically, the air volume of the flow generator 8 is 1.0-50 ml / s. Through the above technical solution, the drug cartridge 5 is configured to be able to controllably adjust the output of the aerosol. Specifically, the output of the aerosol can be adjusted by controlling the power of the nebulizer 5d, the atomization time, and the air volume of the fan. The output can be adjusted by program setting based on the electronic prescription issued by the doctor, or manually adjusted based on the actual demand for the drug by the user.

[0053] In order to facilitate the user to manually adjust the output of the aerosol, the device is also provided with a control panel 9, and a user interface for user operation is configured on the side wall of the housing 2. In order to save space, the control panel 9 is inserted between the user interface and the cartridge case 6, and the back of the control panel 9 abuts against the side wall of the cartridge case 6 to support the user interface. The above configuration can significantly reduce the size of the whole device, making the product easy to hold in the palm of the user and convenient for user operation. The user interface includes an operation key 4 and a display unit, and the display unit is an LED light 3a or a display screen 3b, such as Figure 1 and Fig.11 As shown, Figure 1 For products using LED display, Fig.11 The product adopts the display screen 3b. The difference between the two lies in the different display parts. The rest of the structures are the same and will not be described in detail here. The configuration of the display part facilitates the user to understand the current working status of the device and improves the convenience of operation. In addition, in order to prevent waste caused by accidental touch, for example, when the user puts the product in a pocket, handbag or backpack, the objects squeeze each other and easily cause accidental touch and start atomization, which will cause waste and may contaminate other objects of the user, the outer surface of the operation key 4 in this embodiment is flat or slightly lower than the outer surface of the shell 2.

[0054] Furthermore, a sealing cover 1 which can be flipped along a set axis is disposed on the top of the shell 2, and a protective cavity suitable for accommodating the aerosol nozzle 5a1 is defined between the sealing cover 1 and the shell 2. When in use, it can be opened for use by simply flicking the thumb upwards; when not in use, the sealing cover 1 can be pushed so that the sealing cover 1 covers the top of the shell 2 to seal and protect the aerosol nozzle 5a1, preventing the aerosol nozzle 5a1 from being contaminated, and making it easy to carry.

[0055] Furthermore, if Figure 5 As shown, the bottom side wall of the housing 2 is formed with an air inlet 2c, and an air inlet gap connected to the air inlet 2c is formed between the fan and the housing 2. The power source 10 is a rechargeable battery, and the rechargeable battery is placed horizontally in the air inlet gap. The bottom of the housing 2 is provided with a charging device 11, and the charging device 11 can be electrically connected to an external power supply to charge the rechargeable battery. At least part of the charging device 11 is received in the air inlet gap, which can avoid the charging device 11 from being exposed to protect the charging device 11, and also make the device more beautiful. In addition, the charging device 11 is received in the air inlet gap, which can also dissipate heat for the charging device 11, and prevent the charging device 11 from being too hot during charging, which is practical. Preferably, the charging device 11 can use an existing commonly used charging interface, such as a USB interface or a Type-C interface.

[0056] like Figure 5As shown, in order to facilitate the installation of the internal structure, the outer shell 2 is divided into a left shell 2a and a right shell 2b, and the top of the outer shell 2 has an opening, and the bullet cover 6 is clamped between the left shell 2a and the right shell 2b, and the bullet 5 can be slidably installed in the bullet cover 6 up and down. Figure 5 What is shown is a view of the internal structure after the left shell 2a is removed. The left shell 2a and the right shell 2b can be fixedly installed by fasteners, such as screws, or by snaps, and an air inlet 2c is set on the right shell 2b.

[0057] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A handheld drug aerosol delivery device having a compact structure, characterized in that: have: The housing defines a cavity with an opening at the top and an air inlet at the bottom; A drug cartridge adapted to generate a drug aerosol; a cartridge case adapted to receive the cartridge; A control plate extending in a gap formed between the side of the cartridge case and the housing; as well as a flow generator, which is arranged on a side of the cartridge case facing away from the opening; The outer shape of the housing is configured to be suitable for being held by hand, and a power source is arranged in an air inlet gap formed between the air inlet and the flow generator.

2. The handheld drug aerosol delivery device according to claim 1, characterized in that: The top of the bullet is provided with an aerosol nozzle, and the aerosol nozzle protrudes from the opening.

3. The handheld drug aerosol delivery device according to claim 2, characterized in that: The aerosol nozzle may be one or two, so as to be suitable for oral and nasal inhalation administration.

4. The handheld drug aerosol delivery device according to claim 2 or 3, characterized in that: The top of the shell is provided with a sealing cover which can be turned over along a set axis, and a protective cavity suitable for accommodating the aerosol nozzle is defined between the sealing cover and the shell.

5. The handheld drug aerosol delivery device according to claim 1, 2 or 3, characterized in that: The ammunition cartridge can be taken out of or loaded into the ammunition cartridge sleeve through the opening.

6. The handheld drug aerosol delivery device according to claim 1, characterized in that: A user interface is arranged on the side wall of the housing, and the control panel is inserted between the user interface and the ammunition cartridge sleeve.

7. The handheld drug aerosol delivery device according to claim 6, characterized in that: The user interface includes operation keys and a display portion.

8. The handheld drug aerosol delivery device according to claim 7, characterized in that: The display part is an LED lamp or a display screen.

9. The handheld drug aerosol delivery device according to claim 1, characterized in that: The flow generator is a fan, and a wind gathering cover is arranged between the flow generator and the ammunition sleeve.

10. The handheld drug aerosol delivery device according to claim 1, characterized in that: A charging device is disposed at the bottom of the housing, and at least a portion of the charging device is received in the air inlet gap.

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