Nasal spray dosing device

Abstract

The utility model relates to a nasal spray dosing device. The nasal spray dosing device comprises a liquid storage assembly, a spraying assembly and an adjusting assembly. The liquid storage assembly comprises a tank body and a bag body located in the tank body. The spraying assembly comprises a nozzle and a valve body; the adjusting assembly comprises a first elastic piece and an adjusting piece. The compressed air is contained between the tank body and the bag body to apply continuous extrusion force to the bag body, liquid medicine can be automatically sprayed out through air pressure, pressure applying operation of a user is not needed, and therefore when the device is used, the rate and the fine particle amount of atomized liquid are within the set range of a manufacturer, and the influence of human factors is eliminated; wherein the adjusting piece used for controlling spraying starting and stopping is connected with the nozzle, the operation of controlling spraying starting only needs to press the nozzle, use is convenient and fast, the structure is simple, and faults are not prone to occurring; according to the device, the scheme of blowing air through the mouth is avoided, so that the risk of introducing bacteria in the oral cavity is avoided during use, and the use safety of the product is improved.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a nasal spray drug delivery device. Background Art

[0002] The unique anatomical and physiological connection between the nasal cavity and the brain provides a way to bypass the blood-brain barrier, allowing drug delivery directly to the brain through nasal administration. Compared with other routes, nasal administration has several advantages, for example, it can bypass the first-pass effect that leads to the metabolism of oral drugs and can minimize the poor compliance associated with injections. The outside of the nasal cavity is the lateral wall, which is composed of the upper, middle and lower nasal conchae and their corresponding upper, middle and lower nasal passages. The inside is the nasal septum, and the back is the posterior nasal aperture that connects to the pharynx. In order to ensure the targeted delivery and therapeutic effect of the drug spray through the nasal cavity, it is necessary to reasonably control the parameters such as the spray rate and spray particle size distribution of the nasal spray device. Based on this, the design of the atomization drive structure of the nasal spray device is particularly important.

[0003] In order to deliver more drugs deep into the nasal cavity, existing nasal spray drug delivery devices often use designs such as lengthening the atomizing nozzle, increasing the atomizing driving force, and changing the airflow channel structure. However, these designs have the following drawbacks:

[0004] 1) The atomizer nozzle is too long, which may cause discomfort to the patient when using it;

[0005] 2) Increase the atomization driving force, such as adding an additional oral blowing method to achieve airflow assistance. While pressing the nasal spray device, you need to blow through your mouth. Increasing the atomization driving force through oral blowing requires a high degree of coordination from the patient, and the drug delivery effect is greatly affected by the user's blowing force. This causes the rate of liquid atomization and the amount of fine particles to be affected by human factors, and the targeted delivery and therapeutic effect of the drug solution are often not guaranteed. In addition, oral blowing may introduce bacteria in the oral cavity, and delivery to the deep nasal cavity through the device may introduce additional risks.

[0006] 3) The spraying operation of the device is relatively complicated, and the user needs to invest a certain amount of adaptation cost. Utility Model Content

[0007] In view of this, an embodiment of the present application provides a nasal spray drug delivery device to solve at least one problem existing in the background technology.

[0008] In a first aspect, an embodiment of the present application provides a nasal spray drug delivery device, comprising:

[0009] a liquid storage assembly comprising a tank body and a bag body located within the tank body, wherein compressed gas is contained between the tank body and the bag body to apply a continuous squeezing force to the bag body, and wherein the bag body stores liquid medicine;

[0010] An injection assembly, the injection assembly comprising a nozzle and a valve body, one end of the valve body being connected to the bag body, the other end of the valve body being connected to the nozzle, and the nozzle being movable along its axial direction;

[0011] an adjusting assembly located in the valve body, the adjusting assembly comprising a first elastic member and an adjusting member, the first elastic member abutting against the adjusting member so that the adjusting member blocks the passage in the valve body;

[0012] When the nozzle is pressed and moves along its axial direction, the nozzle drives the adjusting member to move to open the passage in the valve body, thereby triggering liquid spraying.

[0013] In an optional embodiment, the channel includes: a first chamber with a diameter of D1 and a second chamber with a diameter of D2, and the second chamber is connected to the first chamber; the maximum diameter of the adjusting member is d1, D1≥d1≥D2; the adjusting member can close the second chamber under the action of the first elastic member, and when the adjusting member is driven by the nozzle, it can be at least partially located in the first chamber.

[0014] In an optional embodiment, the channel further includes a transition chamber, the second chamber is connected to the first chamber through the transition chamber; along the movable direction of the adjusting member, the inner diameter of the transition chamber changes linearly;

[0015] The adjusting member includes a tapered portion, and an outer wall profile of the tapered portion matches an inner wall profile of the transition chamber.

[0016] In an optional embodiment, the adjusting member further includes an adjusting member driving portion, which is connected to one end of the conical portion toward the nozzle, and at least partially located in the second chamber when the adjusting member driving portion moves; one end of the nozzle has a nozzle driving portion, and the nozzle driving portion abuts against the adjusting member driving portion.

[0017] In an optional embodiment, the minimum diameter of the conical portion is d2, the diameter of the adjusting member driving portion is d3, and d2≥D2>d3.

[0018] In an optional embodiment, the nasal spray drug delivery device further includes a second elastic member, which is used to drive the nozzle to reset to cancel the force applied by the nozzle to the adjusting member.

[0019] In an optional embodiment, the nasal spray drug delivery device further comprises:

[0020] An upper cover is provided at one end of the tank body, and a through hole is provided on the upper cover for the valve body or the nozzle to pass through;

[0021] a driving member connected to the nozzle and used to drive the nozzle to move;

[0022] Two ends of the second elastic member respectively abut against the upper cover and the driving member.

[0023] In an optional embodiment, the driving member is movably connected to the upper cover, and the upper cover includes a limiting portion. When the driving member moves under the elastic force of the second elastic member, the limiting portion can abut against the driving member to limit its moving distance.

[0024] In an optional embodiment, a sealed cavity is formed between the driving member and the upper cover, and the second elastic member is installed in the cavity.

[0025] In an optional embodiment, the driving member includes a driving member chamber located in the cavity, the upper cover includes an upper cover chamber located in the cavity, and both ends of the second elastic member are respectively embedded in the driving member chamber and the upper cover chamber.

[0026] In an optional embodiment, the nasal spray drug delivery device further includes a valve core, one end of which is connected to the valve body, and the other end of which extends to the center or bottom of the bag body.

[0027] In an optional embodiment, two ends of the first elastic member respectively abut against the valve core and the regulating member.

[0028] The nasal spray drug delivery device provided in the embodiment of the present application contains compressed gas between the tank body and the bag body to apply continuous squeezing pressure to the bag body. The gas pressure can be used to automatically spray the drug liquid without the user applying pressure. Therefore, when the device is used, the rate of liquid atomization and the amount of fine particles are within the manufacturer's set range, eliminating the influence of human factors, and the targeted delivery and therapeutic effect of the drug liquid can be guaranteed without lengthening the nozzle. Among them, the adjustment part for controlling the start and stop of the spray is connected to the nozzle. The operation of controlling the start of the spray only requires pressing the nozzle, which is convenient to use, simple in structure, and not prone to failure. The device avoids the use of oral blowing, so there is no risk of introducing oral bacteria during use, thereby improving the safety of product use.

[0029] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0031] Figure 1A schematic cross-sectional view of a nasal spray drug delivery device according to an embodiment of the present application;

[0032] Figure 2 An exploded view of the structure of the nasal spray drug delivery device provided in an embodiment of the present application;

[0033] Figure 3 for Figure 1 A partial enlarged view of

[0034] Figure 4 A schematic cross-sectional view of the nasal spray drug delivery device in the spray-activated state provided in an embodiment of the present application;

[0035] Figure 5 for Figure 4 A partial enlarged view of

[0036] Figure 6 A schematic diagram of the dimensional relationship between the valve body and the regulating member provided in an embodiment of the present application.

[0037] The reference numerals in the figures are:

[0038] 1. Tank body;

[0039] 2. Bag body;

[0040] 3. Sealing seat;

[0041] 4. Upper cover; 4-1. Upper cover chamber; 4-2. Limiting portion; 4-3. Upper cover top surface;

[0042] 5. Driving member; 5-1. Driving member chamber; 5-2. Driving member top surface; 5-3. Driving member bottom surface;

[0043] 6. Nozzle; 6-1. Nozzle drive unit; 6-2. Nozzle flow channel;

[0044] 7. Valve core;

[0045] 8. Valve body; 8-1. First chamber; 8-2. Second chamber; 8-3. Transition chamber;

[0046] 9. a first elastic member;

[0047] 10. Adjusting member; 10-1. Bottom surface of adjusting member; 10-2. Conical portion; 10-3. Driving portion of adjusting member;

[0048] 11. a second elastic member;

[0049] 12. Atomization chip. DETAILED DESCRIPTION

[0050] To make the technical solutions and beneficial effects of the present invention more clearly understood, the following detailed description is given by way of specific embodiments. The accompanying drawings are not necessarily drawn to scale, and local features may be enlarged or reduced to more clearly illustrate the details of the local features. Unless otherwise defined, the technical and scientific terms used herein have the same meanings as those in the technical field to which this application belongs.

[0051] In the description of the present invention, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "height", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and so on, indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of simplifying the description of the present invention, and do not indicate that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and should not be understood as a limitation to the present invention.

[0052] In this utility model, the terms "first" and "second" are used solely for descriptive purposes and should not be construed as indicating the relative importance of the features indicated or the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two or three, and "several" means at least one, such as one, two, or three, unless otherwise expressly specified.

[0053] In this utility model, unless otherwise expressly defined, the terms "install," "connect," "connect," "fix," "dispose," etc. should be understood broadly. For example, "connect" can mean fixed, removable, or integrated; it can mean mechanical or electrical; it can mean direct or indirect connection through an intermediary; it can also mean internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0054] In the present invention, unless otherwise clearly defined, when a first feature is “on,” “above,” “above,” “above,” “below,” “below,” or “below” a second feature, the first feature and the second feature may be in direct contact, or the first feature and the second feature may be in indirect contact via an intermediate medium. Moreover, when a first feature is “on,” “above,” or “above” a second feature, it may mean that the first feature is directly above or obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than the horizontal height of the second feature. When a first feature is “below,” “below,” or “below” a second feature, it may mean that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than the horizontal height of the second feature.

[0055] In order to fully understand the present application, detailed steps and detailed structures will be presented in the following description to illustrate the technical solution of the present application. The preferred embodiments of the present application are described in detail below. However, in addition to these detailed descriptions, the present application may also have other implementation methods.

[0056] This embodiment provides a nasal spray drug delivery device, including: a liquid storage component, a spray component, and an adjustment component.

[0057] like Figure 1 、 Figure 2 As shown, the liquid storage assembly includes a tank body 1 and a bag body 2 located in the tank body 1, compressed gas is contained between the tank body 1 and the bag body 2 to apply continuous squeezing pressure to the bag body 2, and the bag body 2 stores liquid medicine; the injection assembly includes a nozzle 6 and a valve body 8, one end of the valve body 8 is connected to the bag body 2, and the other end of the valve body 8 is connected to the nozzle 6, and the nozzle 6 can move along its axial direction; the adjustment assembly is located in the valve body 8, and includes a first elastic member 9 and an adjustment member 10, and the first elastic member 9 abuts the adjustment member 10 so that the adjustment member 10 blocks the channel in the valve body 8.

[0058] When the nozzle 6 is pressed and moves along its axial direction, the nozzle 6 drives the adjustment member 10 to move to open the passage in the valve body 8 and trigger the liquid spraying.

[0059] The nasal spray drug delivery device provided in the embodiment of the present application contains compressed gas between the tank body 1 and the bag body 2 to apply continuous squeezing pressure to the bag body 2, so that the drug liquid is automatically sprayed out without the need for the user to apply pressure. Therefore, when the device is used, the rate of liquid atomization and the amount of fine particles are within the manufacturer's set range, eliminating the influence of human factors, and the targeted delivery and therapeutic effect of the drug liquid can be guaranteed without lengthening the nozzle; wherein, the adjustment member 10 for controlling the start and stop of the spray is connected to the nozzle 6, and the operation of controlling the start of the spray only requires pressing the nozzle 6, which is convenient to use, simple in structure, and not prone to failure; the device avoids the use of oral blowing, so there is no risk of introducing oral bacteria during use, thereby improving the safety of product use.

[0060] The nasal spray drug delivery device provided in the embodiment of the present application has the following working principles of its components:

[0061] In the liquid storage assembly, the bag body 2 plays the role of containing and storing the medicinal liquid, and the tank body 1 is used to contain the bag body 2. The bag body 2 is made of a flexible, compressible and deformable material, while the tank body 1 is rigid. When leaving the factory, a sufficient amount of medicinal liquid is filled in the bag body 2, and a sufficient amount of gas is sealed between the inner wall of the tank body 1 and the outer wall of the bag body 2. In this way, the gas in the tank body 1 will keep squeezing the bag body 2, and when the bag body 2 is connected to the outside, the medicinal liquid inside will automatically spray out under the squeezing force of the compressed gas. It can be understood that the gas sealed in the tank body 1 needs to meet the sealing conditions, and the amount of sealed gas needs to be able to meet the requirements of spraying out all the medicinal liquid in the bag body 2 and being able to provide the medicinal liquid spraying at a preset speed throughout the process. The specific parameters can be obtained through the experience of researchers, actual experiments or parameter simulations, and are not limited to this in this embodiment.

[0062] In the spray assembly, the nozzle 6 is a component that sprays liquid entering it in an atomized state. The nozzle 6 is connected to the bag 2 through the valve body 8. The valve body 8 has a channel for the liquid to flow from the bag 2 into the nozzle 6. This channel can be opened or closed. Only when the channel is open will the liquid in the bag 2 be sprayed out of the nozzle 6 under the squeezing force of the compressed gas.

[0063] In the adjustment assembly, the adjustment member 10 is arranged in the valve body 8 and can move. The function of the first elastic member 9 is to use its own elastic force to enable the adjustment member 10 to block the channel in the valve body 8 under normal conditions, thereby closing the channel. The adjustment member 10 is also connected to the nozzle 6, which can move along its own axis. The nozzle 6 is located outside the tank body 1, so it is convenient for the user to press it. After the nozzle 6 is pressed by the user, its movement drives the adjustment member 10 to move. After the adjustment member 10 moves, its position changes, and it no longer blocks the channel of the valve body 8. The liquid medicine flows from the bag body 2 into the nozzle 6 and is then sprayed out. In this process, when the nozzle 6 is pressed by the user, the elastic force provided to the adjustment member 10 by the first elastic member 9 is not enough to prevent the adjustment member 10 from moving. When the user no longer operates the nozzle 6, the adjustment member 10 can return to its normal position under the action of this elastic force, blocking the channel of the valve body 8 and preventing the liquid medicine from continuing to spray out.

[0064] In an optional embodiment, if Figure 6 As shown, the channel includes: a first chamber 8-1 with a diameter of D1 and a second chamber 8-2 with a diameter of D2, the second chamber 8-2 is connected to the first chamber 8-1; the maximum diameter of the regulating member 10 is d1, D1≥d1≥D2. Figure 3 As shown, since the maximum diameter of the regulating member 10 is larger than the diameter of the second chamber 8-2, the second chamber 8-2 can be closed under the elastic force of the first elastic member 9, as shown in FIG. Figure 4 、 Figure 5As shown, when the regulating member 10 is driven by the nozzle 6, it can be at least partially located in the first chamber 8-1. Because the diameter of the first chamber 8-1 is larger than the maximum diameter of the regulating member 10, a gap exists between the regulating member 10 and the wall of the first chamber 8-1, through which the liquid medicine can flow, and the passage of the valve body 8 is in an open state. In this embodiment, by setting the diameter of the passage to be variable, the contact between the outer wall of the regulating member 10 and the inner wall of the passage is variable. Therefore, the regulating member 10 can be moved to block or unblock the passage. This structural design is simple, easy to implement, has simple operational requirements, and has strong practicality.

[0065] In an optional embodiment, if Figure 6 As shown, the passage also includes a transition chamber 8-3, through which the second chamber 8-2 and the first chamber 8-1 are connected. The inner diameter of the transition chamber 8-3 changes linearly along the direction of movement of the adjusting member 10. The adjusting member 10 includes a tapered portion 10-2, the outer wall profile of which matches the inner wall profile of the transition chamber 8-3. In this embodiment, the adjusting member 10 is designed with a tapered portion 10-2, which can fully fit the wall surface of the transition chamber 8-3 through the tapered portion 10-2, thereby improving the stability of the closed passage of the adjusting member 10. On the other hand, the structure of the linear change in the inner diameter of the transition chamber 8-3 can have a guiding effect. In combination with the tapered portion 10-2, the adjusting member 10 can be pushed by the elastic force to ultimately locate in the center of the transition chamber 8-3, fitting with the wall surface of the transition chamber 8-3 to ensure good sealing.

[0066] In an optional embodiment, if Figure 5 As shown, the adjusting member 10 further includes an adjusting member driving portion 10-3, which is connected to the end of the tapered portion 10-2 facing the nozzle 6. When the adjusting member driving portion 10-3 is active, at least a portion thereof is located within the second chamber 8-2. One end of the nozzle 6 has a nozzle driving portion 6-1, which abuts against the adjusting member driving portion 10-3. In this embodiment, when the adjusting member driving portion 10-3 is active, the portion thereof is located within the second chamber 8-2, which can limit the range of motion of the adjusting member 10 to a certain extent. Figure 5As shown, one end of the conical portion 10-2 has an adjusting member bottom surface 10-1 for contacting the first elastic member 9. Ideally, the elastic force of the first elastic member 9 on the adjusting member bottom surface 10-1 is directed toward the axial direction of the nozzle 6. However, in actual use, due to factors such as processing accuracy, user gripping posture, and shaking during use, the direction of the elastic force often deviates from the ideal direction. When the adjusting member drive portion 10-3 is confined within the second chamber 8-2, it can be ensured that the deviation is controlled and the adjusting member 10 will not be significantly offset and unable to return to its normal position. The nozzle drive portion 6-1 is provided to facilitate contact with the adjusting member drive portion 10-3 within the second chamber 8-2. It is understandable that the design of the nozzle drive portion 6-1 is structurally unable to block the second chamber 8-2.

[0067] Preferably, in order to improve the contact stability between the nozzle driving part 6 - 1 and the adjusting member driving part 10 - 3 , a certain matching structure can be designed between the two, for example, one of the two is designed to be convex and the other is designed to be concave.

[0068] In an optional embodiment, if Figure 6 As shown, the minimum diameter of the tapered portion 10-2 is d2, and the diameter of the regulating member driving portion 10-3 is d3, where d2 ≥ D2 > d3. The dimensioning of this embodiment ensures that the tapered portion 10-2 provides a good seal against the second chamber 8-2 while also ensuring a gap between the regulating member driving portion 10-3 and the inner wall of the second chamber 8-2 to facilitate the flow of liquid medicine.

[0069] In an optional embodiment, if Figure 1-Figure 3 As shown, the nasal spray drug delivery device further includes a second elastic member 11, which is used to drive the nozzle 6 to reset to cancel the force applied to the regulating member 10. Figure 3 As shown, the nozzle 6 is in a reset state, the regulating member 10 is not squeezed by the nozzle 6, and blocks the passage of the valve body 8 under the elastic force of the first elastic member 9. In this embodiment, the provision of the second elastic member 11 can realize automatic reset of the device, which is convenient for use.

[0070] In an optional embodiment, if Figure 1-Figure 3 As shown, the nasal spray drug delivery device also includes: an upper cover 4 and a driving member 5. The upper cover 4 is provided on one end of the tank body 1. A through hole is provided on the upper cover 4 for the valve body 8 or the nozzle 6 to pass through. Its function is to facilitate the sealing inside the tank body 1. In addition, the setting of the upper cover 4 can also facilitate the connection of components such as the nozzle 6, the second elastic member 11, and the driving member 5. The driving member 5 is connected to the nozzle 6 and is used to drive the nozzle 6 to move; the two ends of the second elastic member 11 respectively abut the upper cover 4 and the driving member 5. The function of the driving member 5 is to facilitate the pressing of the nozzle 6, expand the position where the user's fingers can apply pressure, and the driving member 5 is also convenient for cooperating with the upper cover 4 to install the second elastic member 11.

[0071] In an optional embodiment, if Figure 3 、 Figure 5 As shown, the driving member 5 is movably connected to the upper cover 4. The upper cover 4 includes a limiting portion 4-2. When the driving member 5 moves due to the elastic force of the second elastic member 11, the limiting portion 4-2 can abut against the driving member 5 to limit its movement distance. The limiting portion 4-2 ensures that the driving member 5 remains within the limited range during its movement relative to the upper cover 4 and does not fall off the upper cover 4.

[0072] In this embodiment, the active positions of the driving member 5 include the following two:

[0073] like Figure 3 As shown, when the driving member 5 is not pressed, it is in a spring-up position under the action of the second elastic member 11, and its inner portion is blocked by the limit portion 4-2, so it cannot continue to move in the direction of the elastic force of the second elastic member 11. The top surface 5-2 of the driving member is pressed by a finger, and there is a certain distance L between the bottom surface 5-3 of the driving member and the top surface 4-3 of the upper cover. L is the maximum downward distance of the driving member 5 when pressed.

[0074] like Figure 5 As shown, when the driver 5 is pressed, it is in the pressed position due to human pressure. At this point, the second elastic member 11 is correspondingly squeezed, and the driver's bottom surface 5-3 now abuts against the top surface 4-3 of the upper cover. As will be understood, when the user stops pressing the driver 5, the second elastic member 11 can cause the driver 5 to return to the raised position. Accordingly, the nozzle 6 returns to its initial position, and the pressure on the regulating member 10 is removed. Under the action of the first elastic member 9, the regulating member 10 also returns to its initial position, blocking the passage of the valve body 8.

[0075] In an optional embodiment, if Figure 3 、 Figure 5 As shown, a sealed cavity is formed between the driving member 5 and the upper cover 4, and the second elastic member 11 is installed in the cavity. In this embodiment, the second elastic member 11 is installed in the cavity between the driving member 5 and the upper cover 4, which can hide the second elastic member 11 and protect it.

[0076] In an optional embodiment, if Figure 3 、 Figure 5 As shown, the driver 5 includes a driver chamber 5-1 located within the cavity, and the upper cover 4 includes an upper cover chamber 4-1 located within the cavity. The ends of the second elastic member 11 are respectively embedded in the driver chamber 5-1 and the upper cover chamber 4-1. In this embodiment, the arrangement of the upper cover chamber 4-1 and the driver chamber 5-1 better accommodates the second elastic member 11, improving the stability of the second elastic member 11 during operation, reducing the positional deviation of the second elastic member 11, and ensuring a relatively stable direction of the elastic force.

[0077] In an optional embodiment, if Figures 1-4 As shown, the nasal spray drug delivery device further includes a valve core 7, one end of which is connected to the valve body 8 and the other end of which extends to the center or bottom of the bag body 2. In this embodiment, the provision of the valve core 7 extends the length of the passage of the valve body 8 to facilitate the emptying of the liquid medicine in the bag body 2, thereby preventing the liquid medicine from accumulating at the bottom and being difficult to drain during the final stage of use of the device.

[0078] In an optional embodiment, if Figures 1-4 As shown, the two ends of the first elastic member 9 respectively abut the valve core 7 and the regulating member 10. In this embodiment, the arrangement of the valve core 7 also facilitates the installation of the first elastic member 9, and the top surface of the valve core 7 also serves as a support point, so that the end of the first elastic member 9 can abut thereon.

[0079] In an optional embodiment, if Figure 1 As shown, the can body 1 has a can opening for receiving the bag body 2. The nasal spray drug delivery device further includes a sealing seat 3, which is connected between the can body 1 and the bag body 2 and seals the can opening. In this embodiment, the provision of the sealing seat 3 facilitates sealing the gap between the can body 1 and the bag body 2, so that the positive pressure gas pre-filled in the gap can be stored for a long time without leakage.

[0080] In an optional embodiment, if Figure 1-Figure 3 As shown, the nozzle 6 of this embodiment has a nozzle flow channel 6-2 inside. One end of the nozzle flow channel 6-2 is connected to the valve body 8 channel, and the other end serves as an injection end to spray the liquid medicine. The injection end is provided with a built-in atomization chip 12. When the liquid medicine flows from the nozzle flow channel 6-2 through the atomization chip 12, the liquid medicine is formed into a mist form by the action of the atomization chip 12, which is convenient for the user to inhale.

[0081] In an optional embodiment, the first elastic member 9 or the second elastic member 11 described in this embodiment is a spring, which is a mature, reliable and easy to install product.

[0082] It should be understood that the above embodiments are exemplary and are not intended to encompass all possible implementations of the claims. Various modifications and variations may be made to the above embodiments without departing from the scope of the present disclosure. Similarly, the various technical features of the above embodiments may be arbitrarily combined to form additional embodiments of the present application that may not be explicitly described. Therefore, the above embodiments merely illustrate several implementations of the present application and do not limit the scope of protection of the patent application.

Claims

1. A nasal spray drug delivery device, characterized in that: include: A liquid storage assembly, comprising a tank body (1) and a bag body (2) located within the tank body (1), wherein compressed gas is contained between the tank body (1) and the bag body (2) to apply a continuous squeezing force to the bag body (2), and a liquid medicine is stored in the bag body (2); An injection assembly, the injection assembly comprising a nozzle (6) and a valve body (8), one end of the valve body (8) being in communication with the bag body (2), the other end of the valve body (8) being in communication with the nozzle (6), and the nozzle (6) being movable along its axial direction; an adjusting assembly located in the valve body (8), the adjusting assembly comprising a first elastic member (9) and an adjusting member (10), the first elastic member (9) abutting against the adjusting member (10) so that the adjusting member (10) blocks the passage in the valve body (8); When the nozzle (6) is pressed and moves along its axial direction, the nozzle (6) drives the regulating member (10) to move to open the channel in the valve body (8), thereby triggering the liquid spraying.

2. The nasal spray drug delivery device according to claim 1, characterized in that: The channel comprises: a first chamber (8-1) with a diameter of D1 and a second chamber (8-2) with a diameter of D2, wherein the second chamber (8-2) is connected to the first chamber (8-1); the maximum diameter of the adjusting member (10) is d1, and D1≥d1≥D2; the adjusting member (10) can close the second chamber (8-2) under the action of the first elastic member (9), and when the adjusting member (10) is driven by the nozzle (6), it can be at least partially located in the first chamber (8-1).

3. The nasal spray drug delivery device according to claim 2, characterized in that: The channel further comprises a transition chamber (8-3), the second chamber (8-2) and the first chamber (8-1) are communicated with each other through the transition chamber (8-3); along the moving direction of the adjusting member (10), the inner diameter of the transition chamber (8-3) changes linearly; The adjusting member (10) comprises a tapered portion (10-2), and the outer wall profile of the tapered portion (10-2) matches the inner wall profile of the transition chamber (8-3).

4. The nasal spray drug delivery device according to claim 3, characterized in that: The adjusting member (10) further comprises an adjusting member driving portion (10-3), wherein the adjusting member driving portion (10-3) is connected to one end of the conical portion (10-2) facing the nozzle (6), and when the adjusting member driving portion (10-3) is movable, at least a portion of the adjusting member driving portion (10-3) is located in the second chamber (8-2); one end of the nozzle (6) comprises a nozzle driving portion (6-1), and the nozzle driving portion (6-1) abuts against the adjusting member driving portion (10-3).

5. The nasal spray drug delivery device according to claim 4, characterized in that: The minimum diameter of the tapered portion (10-2) is d2, the diameter of the regulating member driving portion (10-3) is d3, and d2≥D2>d3.

6. The nasal spray drug delivery device according to any one of claims 1 to 5, characterized in that: The nasal spray drug delivery device further comprises a second elastic member (11), which is used to drive the nozzle (6) to reset so as to cancel the force exerted by the nozzle on the regulating member (10).

7. The nasal spray drug delivery device according to claim 6, characterized in that: The nasal spray drug delivery device further comprises: An upper cover (4) is provided at one end of the tank body (1), and a through hole is provided on the upper cover (4) for the valve body (8) or the nozzle (6) to pass through; a driving member (5), connected to the nozzle (6) and used to drive the nozzle (6) to move; Two ends of the second elastic member (11) respectively abut against the upper cover (4) and the driving member (5).

8. The nasal spray drug delivery device according to claim 7, characterized in that: The driving member (5) is movably connected to the upper cover (4), and the upper cover (4) includes a limiting portion (4-2). When the driving member (5) is moved by the elastic force of the second elastic member (11), the limiting portion (4-2) can abut against the driving member (5) to limit its moving distance.

9. The nasal spray drug delivery device according to claim 7, characterized in that: A sealed cavity is formed between the driving member (5) and the upper cover (4), and the second elastic member (11) is installed in the cavity.

10. The nasal spray drug delivery device according to claim 9, characterized in that: The driving member (5) includes a driving member chamber (5-1) located in the cavity, the upper cover (4) includes an upper cover chamber (4-1) located in the cavity, and two ends of the second elastic member (11) are respectively embedded in the driving member chamber (5-1) and the upper cover chamber (4-1).

11. The nasal spray drug delivery device according to any one of claims 1 to 5, characterized in that: The nasal spray drug delivery device further comprises a valve core (7), one end of which is connected to the valve body (8) and the other end of which extends to the center or bottom of the bag body (2).

12. The nasal spray drug delivery device according to claim 11, characterized in that: Both ends of the first elastic member (9) abut against the valve core (7) and the regulating member (10) respectively.

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