Integrated reset piece of nasal cavity administration atomization device
The double helical spring structure of the reset component solves the problems of inconvenient operation, rapid wear, and high cost of nasal drug delivery devices, providing stable reset force and spray uniformity, and reducing wear risk and production costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-06
- Publication Date
- 2026-03-10
AI Technical Summary
The existing nasal drug delivery device's reset mechanism suffers from problems such as inconvenient operation, rapid wear, high cost, and poor economic efficiency, especially the wear caused by the preload of the metal spring and the difficulty in installing the solid spring pad.
The reset component, which adopts a double helical spring structure, combines the first and second support rings with the helical springs through staggered rotation to provide a stable reset force, reduce operating pressure, extend service life, and reduce consumables and production costs.
This invention enables a nasal delivery device that is easy to operate, reduces wear risk, minimizes consumables and costs, ensures uniform and accurate spraying, and extends the device's lifespan.
Smart Images
Figure CN223979996U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of resetting components for nasal drug delivery nebulizers, specifically relating to an integrated resetting component for a nasal drug delivery nebulizer. Background Technology
[0002] Currently, the medication delivery device used for nasal administration is usually a spray pump structure. The liquid medication is drawn into the internal channel of the spray pump by pressing the nozzle, and finally sprayed out from the nozzle at the top of the spray pump. In order to facilitate the use of medication by patients, portable medicine bottles are generally used, and patients compress the liquid themselves to form a spray and introduce it into the nasal cavity.
[0003] In the prior art, the reset component used in nasal sprays is generally a spring or a solid spring pad. The problem is that in order to ensure sufficient reset force, a large compression force is often required, which leads to excessive pressure required for nasal drug delivery and inconvenience in operation.
[0004] Precise preload and metal springs can cause significant compression and deformation friction on surrounding components, potentially leading to wear and deformation and a shortened product lifespan. Furthermore, the need for preload during assembly, coupled with the use of solid spring pads to keep the nozzle normally closed, creates installation inconvenience. For such components, production costs are primarily calculated based on quality or consumables, and solid spring pads are difficult to reduce costs, resulting in poor economic efficiency. During assembly, the reset components used in the piston assembly need to be consistent with the compression stroke, single spray dosage, and cumulative spray count. This means covering at least the entire product lifecycle and meeting usage frequency while minimizing consumables, reducing weight, facilitating assembly, and reducing costs. Simultaneously, production costs need to be considered to further reduce the product's economic cost. Additionally, the range of elastic force is difficult to adjust, thus requiring improvements. Utility Model Content
[0005] The purpose of this utility model is to provide an integrated reset component for a nasal drug delivery nebulizer, including a reset component I and a reset component II. The reset component I is used for resetting the piston assembly, and the reset component II is used for resetting the one-way valve assembly.
[0006] The reset assembly I includes a first support ring I and a first support ring II. A first main helical spring I and a first main helical spring II are disposed between the first support ring I and the first support ring II, and the first main helical spring I and the first main helical spring II are rotated out of position. A first auxiliary helical spring I and a first auxiliary helical spring II are disposed between the first main helical spring I and the first main helical spring II, and the first auxiliary helical spring I and the first auxiliary helical spring II are rotated out of position.
[0007] The reset assembly II includes a second support ring I and a second support ring II. A second helical spring I and a second helical spring II are disposed between the second support ring I and the second support ring II, and the second helical spring I and the second helical spring II are arranged in a staggered rotational configuration.
[0008] The technical solution provided in this application also has the following technical features:
[0009] Preferably, in one embodiment of this application, the inner diameter of the first support ring I and the first support ring II is more than twice the width of the first main helical spring I and the first main helical spring II.
[0010] Preferably, in one embodiment of this application, the width or thickness of the cross-sections of the first main helical spring I, the first main helical spring II, the first support ring I, and the first support ring II are consistent.
[0011] Preferably, in one embodiment of this application, the dimensions of the first main helical spring I and the first main helical spring II are larger than the dimensions of the first auxiliary helical spring I and the first auxiliary helical spring II.
[0012] Preferably, in one embodiment of this application, the thickness specifications of the cross sections of the first support ring I and the first support ring II are consistent with the thickness specifications of the cross sections of the first main helical spring I and the first main helical spring II.
[0013] Preferably, in one embodiment of this application, on the cross section, the direction of width measurement is perpendicular to the direction of thickness measurement; and the side with the smaller angle to the horizontal direction is regarded as the width, and the side with the smaller angle to the vertical direction is regarded as the thickness.
[0014] Preferably, in one embodiment of this application, the first main helical spring I and the first main helical spring II are symmetrically arranged along the central axis of the reset assembly I.
[0015] Preferably, in one embodiment of this application, the first auxiliary helical spring I and the first auxiliary helical spring II are symmetrically arranged along the central axis of the reset assembly I.
[0016] Preferably, in one embodiment of this application, the first main helical spring I, the first main helical spring II, the first auxiliary helical spring I, and the first auxiliary helical spring II are arranged at intervals and staggered, and the first auxiliary helical spring I and the first auxiliary helical spring II are passed between the first main helical spring I and the first main helical spring II.
[0017] Preferably, in one embodiment of this application, the outer surfaces of the first main helical spring I, the first main helical spring II, the first auxiliary helical spring I, and the first auxiliary helical spring II are smooth curved surfaces, and the edges are chamfered.
[0018] Preferably, in one embodiment of this application, the first support ring I and the first support ring II are arranged in parallel and their central axes coincide.
[0019] Preferably, in one embodiment of this application, the first support ring I and the first support ring II have the same specifications.
[0020] Preferably, in one embodiment of this application, the first main helical spring I and the first main helical spring II have the same specifications.
[0021] Preferably, in one embodiment of this application, the first pair of helical springs I and II have the same specifications.
[0022] Preferably, in one embodiment of this application, the inner diameter of the second support ring I and the second support ring II is less than four times the width of the second helical spring I and the second helical spring II.
[0023] Preferably, in one embodiment of this application, the second helical spring I and the second helical spring II are symmetrically arranged along the central axis of the reset assembly II.
[0024] Preferably, in one embodiment of this application, the second support ring I and the second support ring II are arranged in parallel and their central axes coincide.
[0025] Preferably, in one embodiment of this application, the second support ring I and the second support ring II have the same specifications.
[0026] Preferably, in one embodiment of this application, the second helical spring I and the second helical spring II have the same specifications.
[0027] Preferably, in one embodiment of this application, the reset component II and / or the reset component I are non-metallic parts and are integrally injection molded structures.
[0028] Preferably, in one embodiment of this application, the outermost part of the second helical spring I and the second helical spring II is a smooth protrusion, so that when the reset assembly II is compressed, the second helical spring I and the second helical spring II do not expand outward beyond the space surrounded by the second support ring I and the second support ring II.
[0029] Preferably, in one embodiment of this application, the edges of the contact surfaces of the second support ring I and the second support ring II of the reset component II are chamfered.
[0030] Preferably, in one embodiment of this application, the edges of the cross sections of the first main helical spring I, the first main helical spring II, the first auxiliary helical spring I, and the first auxiliary helical spring II of the reset assembly I are trapezoidal arc edges; the cross sections of the second helical spring I and the second helical spring II of the reset assembly II are provided with curved arc edges.
[0031] Preferably, in one embodiment of this application, during the initial compression or expansion stroke of the piston assembly, gas from chamber I enters chamber II. During the other corresponding stroke, chamber II is under negative pressure, allowing liquid or gas-liquid mixture in chamber II to enter and fill chamber I. The subsequent continuous compression or expansion stroke after the initial stage of the piston assembly atomizes the liquid or gas-liquid mixture in chamber I through a nozzle. The subsequent continuous compression or expansion stroke after the initial stage of the piston assembly unlocks the one-way valve assembly for the liquid or gas-liquid mixture in chamber I. A one-way valve assembly is provided before the nozzle, and during the subsequent continuous compression or expansion stroke after the initial stage of the piston assembly, the liquid or gas-liquid mixture in chamber I opens the one-way valve assembly.
[0032] The beneficial effects of this application are as follows:
[0033] 1. This application provides a reset component with a double helical spring structure, which is composed of two or more helical springs arranged coaxially or non-coaxially; it has a small self-weight and requires less material, and works together during the reset phase to provide a stable reset force; it significantly reduces operating pressure while ensuring the uniformity and accuracy of the liquid spray.
[0034] 2. This application incorporates reset components with different structures to meet the different self-locking requirements of piston assemblies and nozzles; by changing their length and the number and specifications of the coil springs, it better meets the requirements of reset spring force, stroke, and frequency of use; by precisely designing the preload, it avoids excessive compression of surrounding parts, reducing friction and wear; by optimizing stress distribution, it reduces the risk of spring fatigue failure and extends the overall lifespan of the device.
[0035] 3. The double helical spring of this application is lightweight and flexible in structure, does not require excessive pre-tensioning, and simplifies the assembly process; it uses less material, reduces the overall weight of the product, improves economy and portability, effectively overcomes the technical defects of solid spring pads, such as difficult assembly, high material consumption, high cost and heavy weight, and meets the technical requirements of normally closed and unlocked nozzles.
[0036] 4. The double helical spring of this application ensures that the reset force is constant and meets the design requirements through the synergistic effect of the symmetrically arranged springs; the elastic parameters are easy to adjust, support various product specifications, and cover the entire life cycle; it overcomes the technical defects that cause uneven spraying or premature product failure when the reset component is mismatched with the piston stroke and the spray dosage. Attached Figure Description
[0037] Figure 1 The three-dimensional resetting assembly I of the integrated resetting component of the nasal drug delivery nebulizer of this utility model. Figure 1 ;
[0038] Figure 2 The three-dimensional resetting assembly II of the integrated resetting component of the nasal drug delivery nebulizer of this utility model. Figure 1 ;
[0039] Figure 3 The three-dimensional resetting assembly I of the integrated resetting component of the nasal drug delivery nebulizer of this utility model. Figure 2 ;
[0040] Figure 4 The three-dimensional resetting assembly II of the integrated resetting component of the nasal drug delivery nebulizer of this utility model. Figure 2 ;
[0041] Figure 5 These are the front and top views of the reset assembly I of the integrated reset component of a nasal drug delivery nebulizer according to this utility model;
[0042] Figure 6 for Figure 5 AA section view;
[0043] Figure 7 for Figure 5 BB cross-sectional view;
[0044] Figure 8 These are the front and top views of the reset assembly II of the integrated reset component of the nasal drug delivery nebulizer according to this utility model.
[0045] Figure 9 for Figure 8 CC section view;
[0046] Figure 10 for Figure 8 DD sectional view;
[0047] Figure 11 This is a schematic diagram showing the installation state of reset component I and reset component II of an integrated reset device for nasal drug delivery atomizing device according to the present invention.
[0048] Components in the diagram: 120, Reset assembly II
[0049] 1201, Second helical spring I; 1202, Second helical spring II; 1203, Second support ring I; 1204, Second support ring II; 1205, Curved edge; 160, Reset assembly I
[0050] 1601, First main helical spring I; 1602, First main helical spring II; 1603, First auxiliary helical spring I; 1604, First auxiliary helical spring II; 1605, First support ring I; 1606, First support ring II; 1607, Trapezoidal arc edge; 10, Container
[0051] 20. Sealing cap; 30. Drug delivery pressurization device; 40. Liquid output assembly; 50. Piston I
[0052] 60. Piston II
[0053] 61. Sealing Part II
[0054] 70. Piston III
[0055] 90. Main Column
[0056] 110. Secondary pillar
[0057] 130. Valve outlet channel; 140. Press cap; 151. Filter sleeve.
[0058] 152. Filter membrane core
[0059] 153. Filter membrane
[0060] 180. Protective shield
[0061] 170. Liquid extraction assembly
[0062] 190. Sealing gasket. Detailed Implementation
[0063] The specific embodiments of this application will be further described in detail below with reference to the accompanying drawings. These embodiments are only for illustrating this application and are not intended to limit the scope of this utility model.
[0064] In the description of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0065] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0066] Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0067] like Figures 1 to 10An integrated reset component for a nasal drug delivery nebulizer includes a reset component I 160 and a reset component II 120. The reset component I 160 is used for resetting the piston assembly, and the reset component II 120 is used for resetting the one-way valve assembly.
[0068] The reset assembly I160 includes a first support ring I1605 and a first support ring II1606. A first main helical spring I1601 and a first main helical spring II1602 are disposed between the first support ring I1605 and the first support ring II1606, and the first main helical spring I1601 and the first main helical spring II1602 are arranged in a staggered rotational configuration. A first auxiliary helical spring I1603 and a first auxiliary helical spring II1604 are disposed between the first main helical spring I1601 and the first main helical spring II1602, and the first auxiliary helical spring I1603 and the first auxiliary helical spring II1604 are arranged in a staggered rotational configuration.
[0069] The reset assembly II 120 includes a second support ring I 1203 and a second support ring II 1204. A second helical spring I 1201 and a second helical spring II 1202 are disposed between the second support ring I 1203 and the second support ring II 1204, and the second helical spring I 1201 and the second helical spring II 1202 are arranged in a staggered rotational configuration.
[0070] Specifically, in one embodiment of this application, the inner diameter of the first support ring I 1605 and the first support ring II 1606 is more than twice the width of the first main helical spring I 1601 and the first main helical spring II 1602, which is beneficial for fitting a larger internal space and supporting the repositioning of the piston component.
[0071] Specifically, in one embodiment of this application, the width or thickness specifications of the cross-sections of the first main helical spring I 1601, the first main helical spring II 1602, the first support ring I 1605, and the first support ring II 1606 are consistent; the thickness specifications of the cross-sections of the first support ring I 1605 and the first support ring II 1606 are consistent with the thickness specifications of the cross-sections of the first main helical spring I 1601 and the first main helical spring II 1602.
[0072] Specifically, in one embodiment of this application, the first support ring I 1605 and the first support ring II 1606 have the same specifications; the first main helical spring I 1601 and the first main helical spring II 1602 have the same specifications; and the first auxiliary helical spring I 1603 and the first auxiliary helical spring II 1604 have the same specifications.
[0073] Specifically, in one embodiment of this application, the dimensions of the first main helical spring I 1601 and the first main helical spring II 1602 are larger than those of the first auxiliary helical spring I 1603 and the first auxiliary helical spring II 1604. The auxiliary helical springs are used to supplement the required elastic force, and achieve less material consumption, less weight, a large elastic force adjustment range, and are suitable for larger stroke compression, which facilitates matching the piston stroke and the required reset force.
[0074] It should be noted that: on the cross section, the width is measured relative to the thickness, and the two are perpendicular; and the side with the smaller angle to the horizontal direction is considered the width, and the side with the smaller angle to the vertical direction is considered the thickness.
[0075] Specifically, in one embodiment of this application, the first main helical spring I 1601 and the first main helical spring II 1602 are symmetrically arranged along the central axis of the reset assembly I 160; the first auxiliary helical spring I 1603 and the first auxiliary helical spring II 1604 are symmetrically arranged along the central axis of the reset assembly I 160.
[0076] Specifically, in one embodiment of this application, the first main helical spring I 1601, the first main helical spring II 1602, the first auxiliary helical spring I 1603, and the first auxiliary helical spring II 1604 are spaced out and staggered, and the first auxiliary helical spring I 1603 and the first auxiliary helical spring II 1604 are passed between the first main helical spring I 1601 and the first main helical spring II 1602.
[0077] Specifically, in one embodiment of this application, the outer surfaces of the first main helical spring I 1601, the first main helical spring II 1602, the first auxiliary helical spring I 1603, and the first auxiliary helical spring II 1604 are smooth curved surfaces, and the edges are chamfered.
[0078] Specifically, in one embodiment of this application, the first support ring I 1605 and the first support ring II 1606 are arranged in parallel and their central axes coincide.
[0079] Specifically, in one embodiment of this application, the inner diameter of the second support ring I 1203 and the second support ring II 1204 is less than four times the width of the second helical spring I 1201 and the second helical spring II 1202, which is suitable for short stroke and is used for self-locking of the one-way valve assembly.
[0080] Specifically, in one embodiment of this application, the second helical spring I 1201 and the second helical spring II 1202 are symmetrically arranged along the central axis of the reset assembly II 120; the second support ring I 1203 and the second support ring II 1204 are arranged in parallel and their central axes coincide.
[0081] Specifically, in one embodiment of this application, the second support ring I 1203 and the second support ring II 1204 have the same specifications; the second helical spring I 1201 and the second helical spring II 1202 have the same specifications.
[0082] Specifically, in one embodiment of this application, the reset component II 120 and / or the reset component I 160 are non-metallic parts and are integrally injection molded structures.
[0083] Specifically, in one embodiment of this application, the outermost part of the second helical spring I 1201 and the second helical spring II 1202 is a smooth protrusion, so that when the reset assembly II 120 is compressed, the second helical spring I 1201 and the second helical spring II 1202 do not expand outward beyond the space surrounded by the second support ring I 1203 and the second support ring II 1204.
[0084] Specifically, in one embodiment of this application, the edges of the contact surfaces of the second support ring I 1203 and the second support ring II 1204 of the reset assembly II 120 are chamfered.
[0085] Specifically, in one embodiment of this application, the edges of the cross sections of the first main helical spring I1601, the first main helical spring II1602, the first auxiliary helical spring I1603, and the first auxiliary helical spring II1604 of the reset assembly I160 are trapezoidal arc edges 1607; and curved arc edges 1205 are provided on the cross sections of the second helical spring I1201 and the second helical spring II1202 of the reset assembly II120.
[0086] Specifically, in one embodiment of this application, during the initial compression or expansion stroke of the piston assembly, gas from chamber I enters chamber II. During another corresponding stroke, chamber II experiences negative pressure, allowing liquid or gas-liquid mixture from chamber II to enter and fill chamber I. Subsequent compression or expansion strokes after the initial piston assembly atomize the liquid or gas-liquid mixture in chamber I via a nozzle. These subsequent compression or expansion strokes also unlock the one-way valve assembly. A one-way valve assembly is provided before the nozzle, and during the subsequent compression or expansion strokes after the initial piston assembly, the liquid or gas-liquid mixture in chamber I opens the one-way valve assembly.
[0087] like Figure 11 The integrated reset component of this application uses a nasal atomizing device to atomize liquid medication and administer it through the nasal cavity, allowing the medication to reach the respiratory tract and lungs.
[0088] Normally closed nozzle: The liquid can be sprayed out from the nozzle, but air cannot enter the pump from the nozzle.
[0089] The piston assembly includes piston I 50, piston II 60, and piston III 70; the spray pump assembly includes main column 90, secondary column 110, reset assembly II 120, press cover 140, reset assembly I 160, drug delivery pressurization device 30, sealing cover 20, sealing gasket 190, and container 10.
[0090] Protective cover 180: protects the liquid output component 40 and prevents dust; the part of the protective cover 180 that comes into contact with the liquid output component 40 is provided with an antibacterial coating; the antibacterial coating is a metal film, which is a silver plating layer, such as nano silver.
[0091] Main column 90: The main column 90 is fixed on the liquid output component 40. The liquid passes through the cyclone channel of the main column 90 and is mechanically stirred under pressure.
[0092] Sub-post 110: Fixed to piston I 50, forming a passage with main post 90. Through the elastic force of reset assembly II 120, the head, main post 90, and liquid output assembly 40 are in contact, forming a closed passage, preventing gas from entering. When the liquid pressure in the chamber of liquid output assembly 40 exceeds the force of reset assembly II 120, reset assembly II 120 retracts, opening sub-post 110, and liquid is ejected from liquid output assembly 40. After the liquid is ejected and pressure is released, reset assembly II 120 springs back, sealing the liquid outlet of the head.
[0093] Piston I 50: Fixed inside the liquid output assembly 40, with reset assembly II 120 placed at the head, and the lower end cooperates with piston II 60 to form a liquid outlet channel.
[0094] Piston II 60: Fixed on piston I 50, and cooperates with piston I 50, piston III 70 and drug delivery pressurization device 30 to form a sealed liquid outlet channel.
[0095] Piston III 70: Fixed on piston I 50 and piston II 60. When the press cap 140 and liquid output assembly 40 are pressed down, the lower end of piston III 70 and the drug delivery pressurization device 30 begin to seal, forming a closed chamber.
[0096] Reset component I160: A functional component that can reset the part after it is pressed all the way down and then released.
[0097] The dosing pressurization device 30 serves both as a base to fix the various components and as a key component for controlling the dosage.
[0098] Sealing gasket 190: A sealing component that works with container 10 and dosing pressurization device 30 to prevent leakage of the drug solution.
[0099] Sealing cap 20: Anti-opening component, which works with container 10 and sealing gasket 190 to prevent the medicine from being exposed.
[0100] Container 10: Contains the medicinal liquid.
[0101] Reset assembly II 120: Fixed inside the sub-pillar 110 and piston I 50, it abuts against the sub-pillar 110 so that it can close the liquid output assembly 40 port, and resets the sub-pillar 110 to create a seal after the liquid is ejected.
[0102] Liquid output assembly 40: Head base component, externally in contact with the user, internally fixing piston I 50 and main column 90 and forming a liquid outlet channel.
[0103] Press-down cover 140: Fixed to the liquid output assembly 40, it is an extension of the liquid output assembly 40. The hand presses on this part.
[0104] Filter sleeve 151: Fixed inside the drug delivery pressurization device 30, used to hold filter membrane 153.
[0105] Filter membrane 153: Used to filter bacteria in gas, allowing only air to pass through and not liquids to pass through.
[0106] Filter membrane inner core 152: Prevents filter membrane 153 from falling out, and is interference-fitted with filter membrane sleeve core 151.
[0107] Liquid extraction component 170: draws liquid from container 10, connects the inside and outside of container 10, and serves as a channel for gas and liquid transport.
[0108] The working principle and spraying mist process are as follows:
[0109] Before spraying:
[0110] a. Press the press cover 140, causing the piston Ⅲ70 to contact the inner column of the drug delivery pressurization device 30, and begin to seal;
[0111] b. Formation of a pressure chamber;
[0112] c. Continue pressing, and the gas will be gradually compressed. When the piston III 70 reaches the position of the conduction part I of the drug delivery pressurization device 30 and is pushed up by the conduction part I, the gas in the pressure chamber is depressurized and discharged from the liquid dispensing component 170 back into the container 10, and bubbles are generated in the container 10.
[0113] d. When the pressing cap 140 is released, the product as a whole begins to reset under the action of the reset component I 160. After the piston III 70 leaves the conduction part I of the drug delivery pressurization device 30 and a pressure chamber is re-formed, as the piston III 70 moves upward, the liquid in the container 10 will be drawn into the chamber due to the negative pressure.
[0114] After repeating steps a, b, c, and d several times, the chamber will be filled with liquid, and the next press will trigger the spray.
[0115] Initiation of spraying: When the press cap 140 is pressed again, after the lower end of piston Ⅲ70 forms a seal with the inner column of the drug delivery pressurization device 30, the liquid in the cavity will flow upward to the sub-column 110 because the liquid is incompressible. When the liquid pressure is greater than the elastic force of the reset component Ⅱ120, the sub-column 110 moves down, the liquid outlet opens, and the liquid is sprayed out in a mist form through the cyclone groove of the main column 90.
[0116] It is important to note that:
[0117] Piston I 50, piston II 60, piston III 70 and the upper part are equipped with connecting parts II 81 and III 82, and the connecting parts III 82, connecting parts II 81 and piston I 50 are connected to the liquid outlet hole;
[0118] After spraying: Press the cap 140 all the way down. After one spray is finished, the secondary column 110 is reset and resealed under the force of the reset component II 120 to ensure a sterile environment inside the container 10.
[0119] Release to reset: Release the press cover 140, and the product resets under the action of the reset component I 160. The liquid in the container 10 is drawn up along the liquid taking component 170 as the piston III 70 moves upward to replenish the volume of the sprayed spray, and waits for the next press.
[0120] The normally closed nozzle is achieved; the auxiliary column 110 and the reset component II 120 function similarly to a one-way valve; when the spray pump is not in use, under the elastic force of the reset component II 120, the auxiliary column 110 is in close contact with the liquid output component 40, preventing the liquid from flowing out and preventing external air from entering the dosing pressurization device 30; when the spray pump is pressed, the liquid pressure acts on the auxiliary column 110, causing the reset component II 120 to compress and the auxiliary column 110 to move down, opening the liquid outlet channel. After one spray is completed, the auxiliary column 110 quickly closes the nozzle under the action of the reset component II 120.
[0121] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.
Claims
1. An integrated reset component for a nasal drug delivery nebulizer, characterized in that: The reset assembly I (160) is used for resetting the piston assembly, and the reset assembly II (120) is used for resetting the one-way valve assembly. The reset assembly I (160) comprises a first support ring I (1605) and a first support ring II (1606), a first main coil spring I (1601) and a first main coil spring II (1602) are arranged between the first support ring I (1605) and the first support ring II (1606), and the first main coil spring I (1601) and the first main coil spring II (1602) are arranged in staggered rotation, a first auxiliary coil spring I (1603) and a first auxiliary coil spring II (1604) are arranged between the first main coil spring I (1601) and the first main coil spring II (1602), and the first auxiliary coil spring I (1603) and the first auxiliary coil spring II (1604) are arranged in staggered rotation. The reset assembly II (120) comprises a second support ring I (1203) and a second support ring II (1204), a second coil spring I (1201) and a second coil spring II (1202) are arranged between the second support ring I (1203) and the second support ring II (1204), and the second coil spring I (1201) and the second coil spring II (1202) are arranged in staggered rotation.
2. The integral reset member for a nasal aerosol device of claim 1, wherein, The inner diameter specifications of the first support ring I (1605) and the first support ring II (1606) are greater than twice the width specifications of the first main coil spring I (1601) and the first main coil spring II (1602); the inner diameter specifications of the second support ring I (1203) and the second support ring II (1204) are less than four times the width specifications of the second coil spring I (1201) and the second coil spring II (1202).
3. The integral return member for a nasal aerosol device of claim 1 wherein, The first main coil spring I (1601) and the first main coil spring II (1602) are symmetrically arranged along the central axis of the reset assembly I (160); the first auxiliary coil spring I (1603) and the first auxiliary coil spring II (1604) are symmetrically arranged along the central axis of the reset assembly I (160); The first support ring I (1605) and the first support ring II (1606) are arranged in parallel and the central axes coincide; the specifications of the first support ring I (1605) and the first support ring II (1606) are consistent.
4. The integral return feature for a nasal aerosol device of claim 1 wherein, The size specifications of the first main coil spring I (1601) and the first main coil spring II (1602) are greater than the size specifications of the first auxiliary coil spring I (1603) and the first auxiliary coil spring II (1604); the first main coil spring I (1601), the first main coil spring II (1602), the first auxiliary coil spring I (1603), and the first auxiliary coil spring II (1604) are arranged in staggered intervals, and the first auxiliary coil spring I (1603) and the first auxiliary coil spring II (1604) are arranged between the first main coil spring I (1601) and the first main coil spring II (1602).
5. The integral return feature for a nasal aerosol device of claim 1 wherein, The first main spiral spring I (1601) and the first main spiral spring II (1602) have the same specification; the first secondary spiral spring I (1603) and the first secondary spiral spring II (1604) have the same specification; the second support ring I (1203) and the second support ring II (1204) have the same specification; and the second spiral spring I (1201) and the second spiral spring II (1202) have the same specification.
6. The integral return feature for a nasal aerosol device of claim 1 wherein, The second spiral spring I (1201) and the second spiral spring II (1202) are symmetrically arranged along the central axis of the reset assembly II (120); the second support ring I (1203) and the second support ring II (1204) are arranged in parallel and have the same central axis.
7. The integral return feature for a nasal aerosol device of claim 1 wherein, The reset assembly II (120) and the reset assembly I (160) are non-metallic and are integrally injection molded.
8. The integral return feature for a nasal aerosol device of claim 1 wherein, The outermost side of the second spiral spring I (1201) and the second spiral spring II (1202) is a smooth protrusion, so that when the reset assembly II (120) is compressed, the second spiral spring I (1201) and the second spiral spring II (1202) do not expand beyond the space enclosed by the second support ring I (1203) and the second support ring II (1204).
9. The integral return feature for a nasal aerosol device of claim 1 wherein, The outer surface of the first main spiral spring I (1601), the first main spiral spring II (1602), the first secondary spiral spring I (1603), and the first secondary spiral spring II (1604) is a smooth curved surface, and the edges are chamfered; and the edges of the abutting surfaces of the second support ring I (1203) and the second support ring II (1204) of the reset assembly II (120) are chamfered.
10. The integral reset member for a nasal aerosol device of claim 1 wherein, The edges of the cross sections of the first main spiral spring I (1601), the first main spiral spring II (1602), the first secondary spiral spring I (1603), and the first secondary spiral spring II (1604) of the reset assembly I (160) are trapezoidal arc edges (1607); and the cross sections of the second spiral spring I (1201) and the second spiral spring II (1202) of the reset assembly II (120) are provided with curved arc edges (1205).