External reset piece and nasal cavity administration atomization device

Abstract

According to the external reset part and the nasal cavity administration atomization device, a reset suite comprises a corrugated section and a sleeve section, the corrugated section and the sleeve section are connected and integrally arranged in an injection molding mode, the corrugated section is used for being compressed after being pressed and being stretched and reset after being relieved or reduced, and the sleeve section is used for being arranged on a fixed position in a sleeving mode and fixed to a matched part in a sleeving mode; a limiting part is arranged at the joint of the corrugated section and the sleeve section, or a limiting part is arranged at the outer end of the sleeve section, so that the outer end of the corrugated section telescopically moves, and the sleeve section is used for limiting and fixing; the nasal cavity administration atomization device comprises a piston assembly and an atomizing pump assembly, and the piston assembly and the atomizing pump assembly are used for sucking and atomizing medicine.

Description

Technical Field

[0001] This utility model belongs to the field of nasal spray drug delivery technology, specifically relating to an external reset component and a nasal drug delivery atomizing device. 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 existing technology, the pumping pressure of a spray pump is achieved through a piston assembly, such as a combination of two pistons. The piston's return to its original position requires a spring. Generally, a spring is used for piston return, and the pumping of the liquid is completed through a pressing cycle. The piston return mechanism and the pressing element return are typically driven by a metal spring or a metal spring sleeved around the piston assembly. This presents the following technical problems:

[0004] The compression and extension of the spring cause frictional wear on the piston assembly and its accessories, such as the nozzle of the liquid output assembly. It is also necessary to set some matching limiting structures inside to abut the upper end of the spring.

[0005] Moreover, for assembly production, since the spring is located inside, contamination needs to be considered, which means high assembly requirements and high precision are required during the assembly process. The spring must be positioned to ensure that it enters the designated position. This is to avoid friction and wear caused by misalignment, as well as insufficient elasticity or insufficient compression stroke caused by misalignment.

[0006] The problems include a low rate of defective products in assembly, high quality control costs, and wear of the piston assembly and nozzle components by the spring in high-frequency compression life simulation experiments. For pumped drugs, there is a risk of friction particles being mixed in. Utility Model Content

[0007] The purpose of this utility model is to provide an external reset component. The reset kit includes a corrugated section and a sleeve section. The corrugated section and the sleeve section are integrally injection molded. The corrugated section is used to compress after being pressed, and to release or reduce the elongation after being pressed and reset. The sleeve section is used to be sleeved on a fixed position or sleeved and fixed on a matching part.

[0008] A limiting part is provided at the junction of the corrugated section and the sleeve section, or a limiting part is provided at the outer end of the sleeve section, so that the outer end of the corrugated section can move in and out, and the sleeve section is used for limiting and fixing.

[0009] The technical solution provided in this application also has the following technical features:

[0010] Preferably, in one embodiment of this application, the limiting part is a radial protrusion or a matching non-radial protrusion; by applying the radial protrusion or non-radial protrusion to the limiting part design of the reset kit, the problems of poor assembly accuracy and high wear caused by improper spring limiting in traditional devices can be effectively solved; its technical effects are reflected in improving device stability, extending service life and simplifying assembly process, while providing flexibility and scalability for further optimizing the reset performance of the nasal spray device.

[0011] Preferably, in one embodiment of this application, the outer end of the corrugated segment is provided with an upper fastening part, the upper fastening part including an abutting port and a spacer protrusion, the abutting port and / or the spacer protrusion being used for abutting and limiting, and the spacer protrusion being provided for interlocking misalignment to prevent rotational limiting;

[0012] The technical function of the contact port is to provide stable axial positioning, ensuring accurate positioning of the corrugated section during compression or reset; and to disperse pressure through planar contact, reducing local stress concentration and extending the service life of the component.

[0013] The technical function of the interlocking protrusions is to effectively prevent the corrugated section from rotating or slipping during operation by interlocking and staggering, thus ensuring the reset accuracy of the device. Since the protrusions and the matching components are staggered, the jamming caused by direct contact is avoided, thus improving the smoothness of the device's operation.

[0014] The upper locking part provides a dual limiting function through the cooperation of the contact port and the spaced protrusions, which can control axial displacement and prevent rotational deviation. This design simplifies the assembly process and avoids functional failure caused by misaligned assembly. The non-complete contact design between components reduces friction and wear and extends the service life of the product.

[0015] This structure can be widely used in nasal spray devices. The upper snap-fit ​​part at the outer end of the corrugated section makes the reset assembly more stable and reliable when the device is working. It is suitable for a variety of matching parts, has versatility and flexibility, and can be adjusted according to the specific needs of different devices.

[0016] Preferably, in one embodiment of this application, the contact port is the end face of a circular ring or an elliptical ring; by setting the contact port as a circular ring or an elliptical ring end face, the limiting and resetting functions of the corrugated segment can be effectively realized, significantly improving the accuracy and stability of the resetting component; when using a circular ring end face, it has the advantages of simple processing and uniform force distribution; when using an elliptical ring end face, it can meet the mechanical requirements in a specific direction, enhancing the multifunctionality and adaptability of the device; it simplifies the assembly of components, while reducing the risk of wear and failure during device operation.

[0017] Preferably, in one embodiment of this application, the shape of the spacer protrusion includes any one of the following: cylindrical, rectangular columnar, square pyramidal, spherical, semi-cylindrical, trapezoidal, serrated, or wavy. Different protrusion shapes adapt to different matching structural requirements, providing specific limiting and anti-rotation functions. Multiple limiting and anti-rotation functions are provided to meet the precise requirements under different working conditions. The reliability and durability of component connections are enhanced, reducing wear and failures caused by rotation or misalignment. Flexible design options are provided to adapt to diverse device requirements, improving the adaptability and versatility of the device.

[0018] Preferably, in one embodiment of this application, the abutting port is disposed outside the spacer protrusion, and the two are spaced apart.

[0019] Preferably, in one embodiment of this application, the sleeve section is provided with an air groove, a middle contact portion, and a limiting protrusion; the air groove is provided on the inner wall of the sleeve section, the limiting protrusion is provided on the outer end of the sleeve section, and the middle contact portion is provided at the junction of the sleeve section and the corrugated section.

[0020] The air groove improves the movement efficiency of the device and reduces resistance during compression or reset; the middle contact part provides corrugated section support to ensure precise operation of the device; the limiting protrusion enhances the stability of the sleeve section and adapts to high-frequency operation requirements.

[0021] Preferably, in one embodiment of this application, the sleeve section contracts inward to form an annular shape, forming a middle contact portion for supporting and limiting the end of the corrugated section, and the interior of the sleeve section is used to limit the matching parts.

[0022] Preferably, in one embodiment of this application, the air groove is provided along the inner wall of the sleeve section and extends to the outer port of the sleeve, so as to allow the internal airflow to pass through when the corrugated section deforms.

[0023] Preferably, in one embodiment of this application, the reset kit is used to cooperate with the piston assembly in resetting by contacting the piston assembly or the connecting accessory of the piston assembly.

[0024] Preferably, in one embodiment of this application, a nasal drug delivery atomizing device employs an external reset component, including a piston assembly and a spray pump assembly, the piston assembly and the spray pump assembly being used to draw in and atomize the drug.

[0025] Preferably, in one embodiment of this application, the piston assembly includes piston I, piston II, and piston III; the spray pump assembly includes a main column, a secondary column, a return spring, a pressing cap, a drug delivery pressurization device, a sealing cap, a sealing gasket, and a container.

[0026] Preferably, in one embodiment of this application, the press cover includes an outward extension for increasing the operating pressure area.

[0027] Preferably, in one embodiment of this application, the reset kit is used to cooperate with the piston assembly for reset; a secondary column is provided on the outlet side of the liquid output assembly, and the secondary column is reset in cooperation with the one-way valve assembly via a reset spring.

[0028] 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 strokes after the initial stage of the piston assembly atomize the liquid or gas-liquid mixture in chamber I through the nozzle.

[0029] Preferably, in one embodiment of this application, the continuous compression or expansion stroke after the initial stage of the piston assembly causes the liquid or gas-liquid mixture in cavity I to unlock the one-way valve assembly. A one-way valve assembly is provided before the nozzle. During the continuous compression or expansion stroke after the initial stage of the piston assembly, the liquid or gas-liquid mixture in cavity I opens the one-way valve assembly.

[0030] The beneficial effects of this application are as follows:

[0031] 1. This application eliminates the built-in spring structure by using an external reset kit, and provides reset pressure by directly contacting the press cover through the reset kit; no internal assembly is required, and the material and precision requirements of the external component are less for the spring, thus reducing production and assembly costs;

[0032] 2. This application utilizes an external reset kit to allow for direct observation of assembly quality and the matching of stroke and pressure after product assembly, as well as direct observation of deformation. The external reset kit does not directly contact the piston assembly, resulting in low friction. Through the reset kit and its internal matching parts, the corrugated section is fitted with a clearance setting, reducing friction except for the upper end face and lower fixed end. This facilitates inspection of assembly quality and allows for the determination of deformation, elasticity, and stroke of the reset kit through a pressing test, thereby further improving product quality and assembly accuracy. Attached Figure Description

[0033] Figure 1 This is a perspective view of a reset kit according to the present invention;

[0034] Figure 2 This is a front view of a reset kit according to the present invention;

[0035] Figure 3 This is a top view of a reset kit according to the present invention;

[0036] Figure 4 for Figure 2 A sectional view of AA;

[0037] Figure 5 for Figure 3 A cross-sectional view of BB;

[0038] Figure 6 for Figure 1 A magnified view of part D;

[0039] Figure 7 This is a perspective view of a reset kit according to the present invention from an upward angle;

[0040] Figure 8 This is a bottom view of a reset kit according to the present invention;

[0041] Figure 9 This is a perspective view of a nasal drug delivery nebulizer according to the present invention;

[0042] Figure 10 This is a front view of a nasal drug delivery nebulizer according to the present invention;

[0043] Figure 11 This is a top view of a nasal drug delivery nebulizer according to the present invention;

[0044] Figure 12 for Figure 10 CC section view;

[0045] Components in the diagram:

[0046] 160. Reset Kit

[0047] 1601, Corrugated Section

[0048] 1602, Sleeve Section

[0049] 16011, Upper snap-fit ​​part

[0050] 16012, Upper contact part

[0051] 16021, Air Tank

[0052] 16022, Central Confrontation Section

[0053] 16023, Limiting protrusion

[0054] 160111, Contact Port

[0055] 160112, Interval protrusion

[0056] 10. Container

[0057] 20. Sealing cap

[0058] 30. Drug delivery pressurization device

[0059] 40. Liquid output assembly

[0060] 50. Piston I

[0061] 60. Piston II

[0062] 70. Piston III

[0063] 90. Main Column

[0064] 110. Secondary pillar

[0065] 120. Return spring

[0066] 130. Valve outlet channel

[0067] 140. Press the cap

[0068] 170. Liquid extraction assembly

[0069] 180. Protective shield

[0070] 190. Sealing gasket. Detailed Implementation

[0071] 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.

[0072] 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.

[0073] 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.

[0074] Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0075] like Figure 1-8An external reset component, the reset kit 160 includes a corrugated section 1601 and a sleeve section 1602. The corrugated section 1601 and the sleeve section 1602 are integrally injection molded. The corrugated section 1601 is used to compress after being pressed, and to release or reduce the elongation after being pressed to reset. The sleeve section 1602 is used to be sleeved on a fixed position or sleeved and fixed on a matching part.

[0076] A limiting part is provided at the junction of the corrugated section 1601 and the sleeve section 1602, or a limiting part is provided at the outer end of the sleeve section 1602, so that the outer end of the corrugated section 1601 can move telescopically, and the sleeve section 1602 is used for limiting and fixing.

[0077] Specifically, in one embodiment of this application, the limiting portion is a radial protrusion or a matching non-radial protrusion;

[0078] The limiting part is radially protruding: The limiting part is designed as a structure that protrudes radially outward along the circumferential direction of the outer end of the sleeve section. Its height and thickness can be designed according to the actual needs of the device to ensure that it can provide a stable limiting function during use.

[0079] During manufacturing, it can be integrally molded using injection molding, and the precise design of the mold ensures that the size and shape of the radial protrusions meet the product requirements; the material is selected from plastics with certain elasticity and strength (such as polypropylene, ABS, etc.) to improve wear resistance and stability.

[0080] During assembly, the radial protrusions can be fixed by snapping or embedding with matching components, limiting the range of movement of the outer end of the corrugated section and preventing displacement, rotation or detachment during operation; the shape and position of the radial protrusions can be adapted to different types of nasal spray devices, giving them good versatility.

[0081] Technical benefits: Provides clear limit functions to prevent the corrugated section from displacing due to pressure or operation; ensures the stability of the reset kit in the device, improving the reliability of the device; reduces the risk of wear and failure caused by component misalignment or loosening;

[0082] The limiting part is a matching non-radial protrusion: the matching non-radial protrusion can be designed as serrated, wavy or other special shapes to match the grooves, holes or surface textures of the corresponding components; the direction of the protrusion is not limited to radial, and can be set as axial, spiral or other angle protrusion structures according to functional requirements; during manufacturing, it is achieved by combining integral molding technology or subsequent processing technology (such as engraving or mold trimming);

[0083] Non-radial protrusions restrict the free movement of components and provide rotational damping by engaging with the special shape or texture of the matching parts, making them particularly suitable for scenarios where rotational offset needs to be avoided; the design can also meet the needs of different specifications and models of equipment by adjusting the number and position of the protrusions.

[0084] Technical benefits: Enhances the connection strength of components, preventing the corrugated section from rotating or slipping during operation; increases resistance through shape matching, optimizing the motion path and reset accuracy of the device; provides diverse limiting methods to adapt to complex assembly environments, reducing design and production costs.

[0085] Specifically, in one embodiment of this application, the outer end of the corrugated segment 1601 is provided with an upper fastening portion 16011. The upper fastening portion 16011 includes an abutment port 160111 and a spacer protrusion 160112. The abutment port 160111 and / or the spacer protrusion 160112 are used for abutment and limiting. The spacer protrusion 160112 is provided for interlocking misalignment to prevent rotational limiting.

[0086] Upper snap-fit ​​design at the outer end of the corrugated section: The outer end of the corrugated section is provided with an upper snap-fit, which includes two key parts: the contact port and the spacer protrusion.

[0087] Contact port: The end face of a circular or elliptical ring, mainly used to provide a stable contact effect and limit the axial movement of the corrugated section;

[0088] Interval protrusions: Distributed near the contact port, designed as a staggered interlocking structure, which engages with the corresponding slots or surfaces of the matching components to prevent the corrugated section from rotating or shifting during operation.

[0089] Functional implementation of the contact port: During assembly, the contact port contacts the plane or groove of the matching component, providing a clear limiting function; during manufacturing, it can be processed in one piece using injection molding to ensure the flatness of the end face; the material selection must have a certain degree of wear resistance, such as reinforced engineering plastics or wear-resistant resins;

[0090] Functional implementation of the spacer protrusions: The shape and distribution of the spacer protrusions can be designed into various geometric shapes, such as rectangular columns, cylinders, sawtooth shapes, etc. The protrusions maintain a staggered interval to avoid the parts from rotating and sliding during operation; during assembly, the protrusions engage with the grooves or protrusions of the corresponding components to achieve the rotation limit function through mechanical engagement.

[0091] Specifically, in one embodiment of this application, the contact port 160111 is the end face of a circular ring or an elliptical ring;

[0092] The contact port is a circular ring end face: the circular ring end face is designed to be located at the outer end of the corrugated section and forms a limit by directly contacting the surface of the matching part; its diameter, thickness and end face flatness are precisely designed according to the usage environment of the device and the matching requirements of the components; during manufacturing, it can be formed in one step by injection molding process, and the end face treatment must ensure smoothness to reduce wear. At the same time, durability can be improved by coating or material selection, such as using reinforced plastic; the contact surface between the circular ring end face and the matching part is a planar contact, and the force is uniform; during operation, when the corrugated section is deformed by pressure or returns to its initial state, the circular ring end face can achieve precise limit by contacting the part, avoiding the movement of the corrugated section due to insufficient pressure or exceeding the limit;

[0093] Technical benefits: Provides clear limiting functions to ensure that the movement range of the corrugated section is within the design range; reduces friction and wear through planar contact of the circular ring end face, improving component durability; facilitates manufacturing and assembly, reducing the impact of assembly errors on performance;

[0094] The contact port is an elliptical ring end face: the elliptical ring end face is designed with ring end faces of different major and minor axis dimensions to adapt to asymmetrical structures or force requirements in specific directions; its shape can be optimized according to the internal spatial layout of the device and the results of mechanical analysis to ensure that the end face shape matches the working conditions of the corrugated section and matching parts;

[0095] During operation, the elliptical ring end face adjusts the direction and distribution of force by varying the contact area. For example, during the expansion and contraction of the corrugated section, the support force along different axes of the elliptical end face prevents offset or non-axial movement, thereby improving the overall stability of the device.

[0096] Expected technical effects: Provides directional limiting function, especially suitable for scenarios that require limiting displacement in a certain direction; optimizes force distribution and reduces component fatigue wear through the unique shape of the elliptical end face; improves design flexibility for devices that adapt to complex structures or non-standard motion paths.

[0097] Specifically, in one embodiment of this application, the protrusion shape of the spacer protrusion 160112 includes any one of the following: cylindrical, rectangular columnar, square pyramidal, spherical protrusion, semi-cylindrical, trapezoidal protrusion, sawtooth, and wavy.

[0098] Cylindrical protrusions: simple and easy to manufacture, they provide basic limiting functions by engaging with the grooves of the matching parts through their cylindrical structure; they provide a uniform contact area, reduce local wear, and are suitable for devices with light loads and regular reset requirements.

[0099] Rectangular columnar protrusions: Rectangular columnar protrusions have higher contact stability, can fit more tightly with rectangular slots, provide more reliable anti-rotation function, improve limit accuracy, are suitable for scenarios with large rotational forces, and enhance the stability of accessory connections;

[0100] Square-pyramidal protrusions: The square-pyramidal structure uses its gradually increasing cross-section to provide a wedge-shaped interlocking effect, enhancing anti-rotation and limiting performance; reducing the risk of loosening, and suitable for applications requiring higher assembly tightness;

[0101] Spherical protrusions: The spherical structure provides multi-directional interlocking possibilities, making it particularly suitable for the combination of non-standard accessories; it also provides flexible positioning, making it suitable for component connection scenarios that require a certain degree of freedom.

[0102] Semi-cylindrical protrusions: Semi-cylindrical protrusions provide a smooth contact surface, resulting in low friction when combined with curved fittings, facilitating operation; reducing friction, increasing service life, and making them suitable for high-frequency reset devices;

[0103] Trapezoidal protrusions: The trapezoidal design provides higher mechanical interlocking force, suitable for scenarios where forced locking is required between components; it prevents slippage under high loads and enhances device reliability;

[0104] Serrated protrusions: The serrated shape, through its special tooth structure, engages with the matching parts, providing extremely strong anti-slip and limiting effects; it has excellent anti-rotation performance and is suitable for high-precision limiting requirements;

[0105] Wavy protrusions: Wavy protrusions use undulating shapes to provide a flexible interlocking effect, which is suitable for components that require cushioning; they provide shock absorption and reduce wear between components, making them suitable for dynamic load scenarios;

[0106] During manufacturing, injection molding can be used, and different protrusion shapes can be produced by changing the mold; during assembly, the corresponding protrusion shape can be selected according to actual needs to form the best interlocking effect with the matching components; various protrusion shapes can be flexibly configured according to the operating requirements of the device to adapt to different working environments and mechanical properties.

[0107] Specifically, in one embodiment of this application, the contact port 160111 is disposed outside the spacer protrusion 160112, and the two are spaced apart.

[0108] Specifically, in one embodiment of this application, the sleeve section 1602 is provided with an air groove 16021, a middle contact portion 16022, and a limiting protrusion 16023; the air groove 16021 is provided on the inner wall of the sleeve section 1602, the limiting protrusion 16023 is provided on the outer end of the sleeve section 1602, and the middle contact portion 16022 is provided at the junction of the sleeve section 1602 and the corrugated section 1601;

[0109] Air groove 16021: Arranged on the inner wall of sleeve section 1602, extending along the axial direction of the cylinder; mainly used to provide an air circulation channel to avoid air pressure accumulation caused by the compression or reset of corrugated section 1601, thereby affecting the smoothness of component movement;

[0110] The middle contact part 16022 is located at the junction of the sleeve section 1602 and the corrugated section 1601. This part is designed as a ring or other stable structure to support the end of the corrugated section and provide structural limiting function to ensure the stability of the corrugated section during compression or reset.

[0111] Limiting protrusion 16023: Located at the outer end of sleeve section 1602, the protrusion matches the external connector of the matching component to limit the external movement range of the sleeve section and improve the fastening performance of the assembly.

[0112] Air grooves can be formed by injection molding or machining, and can be evenly distributed or locally set along the inner wall axis; when the corrugated section deforms, the air grooves provide channels for the internal airflow to be discharged or introduced, avoiding movement stagnation caused by changes in air pressure;

[0113] The middle contact part mates with the end of the corrugated section, providing support through a ring or polygonal design to prevent the corrugated section from deviating from the axis during movement; the manufacturing of this part must ensure a smooth surface to reduce wear on the end of the corrugated section;

[0114] The limiting protrusion fixes the outer end position of the sleeve section by contacting the groove or edge of the external accessory; with a certain height and strength design, it can achieve stable positioning without affecting the convenience of overall assembly.

[0115] The technical function of the air groove is to ensure smooth internal airflow and prevent the components from moving poorly due to air pressure buildup; to improve the response speed and reset efficiency of the corrugated section and reduce the additional energy consumption during device operation.

[0116] The technical function of the middle contact section is to provide end-limiting and support for the corrugated section, ensuring stability and positioning accuracy during the movement of the corrugated section; and to reduce wear at the end of the corrugated section, thus extending the service life of the device.

[0117] The technical function of the limiting protrusion is to provide a limiting function at the outer end of the sleeve section to prevent misalignment of the components due to external forces; improve assembly accuracy and reduce the risk of loosening of the components during use.

[0118] Specifically, in one embodiment of this application, the sleeve section 1602 is formed by inward contraction of the cylinder to form an annulus, forming a middle contact portion 16022, which is used to support and limit the end of the corrugated section 1601, and the interior of the sleeve section 1602 is used to limit the matching parts.

[0119] Specifically, in one embodiment of this application, the air groove 16021 is provided along the inner wall of the sleeve section 1602 and extends to the outer port of the cylinder, so that when the corrugated section 1601 deforms, the internal airflow flows to the outside, or the outside flows into the inside.

[0120] Specifically, in one embodiment of this application, the reset kit 160 is used to cooperate with the piston assembly in resetting by contacting the piston assembly or the connecting accessory of the piston assembly.

[0121] Specifically, in one embodiment of this application, a nasal drug delivery nebulizer employs an external reset component, including a piston assembly and a spray pump assembly, which are used to draw in and atomize the drug.

[0122] Specifically, in one embodiment of this application, the piston assembly includes piston I 50, piston II 60, and piston III 70; the spray pump assembly includes a main column 90, a secondary column 110, a return spring 120, a pressing cap 140, a drug delivery pressurization device 30, a sealing cap 20, a sealing gasket 190, and a container 10.

[0123] Specifically, in one embodiment of this application, the pressing cover 140 includes an outward extension, which is used to increase the operating pressure area, thereby changing the problem that the original pressing area is too small, increasing the force-bearing area, and increasing the pressing surface of the operator for easier operation.

[0124] Specifically, in one embodiment of this application, the reset kit 160 is used to cooperate with the piston assembly for reset; the outlet side of the liquid output assembly 40 is provided with a secondary column 110, which is reset by the reset spring 120 in cooperation with the one-way valve assembly.

[0125] 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 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 strokes after the initial stage of the piston assembly atomize the liquid or gas-liquid mixture in chamber I through the nozzle.

[0126] Specifically, in one embodiment of this application, the continuous compression or expansion stroke after the initial stage of the piston assembly causes the liquid or gas-liquid mixture in cavity I to unlock the one-way valve assembly. A one-way valve assembly is provided before the nozzle. During the continuous compression or expansion stroke after the initial stage of the piston assembly, the liquid or gas-liquid mixture in cavity I opens the one-way valve assembly.

[0127] like Figure 9-12 Its working principle and functions are as follows:

[0128] The liquid medication is atomized and administered through the nasal cavity, allowing the medication to reach the respiratory tract and lungs.

[0129] Normally closed nozzle: The liquid can be sprayed out of the nozzle, but air cannot enter the pump from the nozzle.

[0130] After being filtered, air is supplied to the pressure bottle to keep the gas inside the pressure bottle in a dust-free and sterile state, preventing the medicine from being contaminated.

[0131] 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, press cap 140, reset kit 160, drug delivery pressurization device 30, sealing cap 20, sealing gasket 190, and container 10.

[0132] 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.

[0133] 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.

[0134] Sub-post 110: Fixed to piston I50, forming a passage with main post 90; through the elastic force of return spring 120, the head is in contact with main post 90 and liquid output assembly 40 to form a closed channel, preventing gas from entering through this channel; when the liquid pressure in the chamber of liquid output assembly 40 is greater than the return force of return spring 120, return spring 120 is compressed and deformed, and sub-post 110 will open, allowing liquid to spray out from liquid output assembly 40. After the liquid spraying is completed and the pressure is released, return spring 120 rebounds, sealing the liquid outlet hole of the head.

[0135] Piston I 50: Fixed inside the liquid output assembly 40, working with the return spring 120, and its lower end cooperates with piston II 60 to form a liquid outlet channel.

[0136] 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.

[0137] 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.

[0138] Reset kit 160: A functional component that enables the part to reset after being pressed down to the bottom and then released.

[0139] The dosing pressurization device 30 serves both as a base to fix the various components and as a key component for controlling the dosage.

[0140] Sealing gasket 190: A sealing component that works with container 10 and dosing pressurization device 30 to prevent leakage of the drug solution.

[0141] Sealing cap 20: Anti-opening component, which works with container 10 and sealing gasket 190 to prevent the medicine from being exposed.

[0142] Container 10: Contains the medicinal liquid.

[0143] The reset spring 120 is integrally formed with the sub-post 110 and resets the sub-post 110 to create a seal after the liquid is ejected.

[0144] 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.

[0145] Press-down cover 140: Fixed to the liquid dispensing assembly 40, it is an extension of the liquid dispensing assembly 40. The hand presses on this part.

[0146] The gas-liquid filtration assembly 150 includes a filter sleeve, a filter membrane, and a filter membrane inner core; the filter sleeve is fixed inside the drug delivery pressurization device 30 and is used to hold the filter membrane; the filter membrane is used to filter bacteria in the gas and only allows air to pass through, not liquid; the filter membrane inner core prevents the filter membrane from falling out and is interference-fitted with the filter membrane sleeve.

[0147] 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.

[0148] The normally closed nozzle is implemented; the auxiliary column 110 functions similarly to a one-way valve; when the spray pump is not in use, under the elastic force of the return spring 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 return spring 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 return spring.

[0149] This application does not exclude the possibility of eliminating the return spring 120 and using the deformation of the sub-post 110 to provide the return driving force, thus replacing the return spring 120. The technical effect is the same, and it can be implemented in conjunction with this application.

[0150] In summary, this invention aims to address the problems of complex assembly, insufficient sealing performance, and high production costs caused by the multi-component design of existing nasal drug delivery devices. By proposing a sub-column design with an integrated reset and sealing structure, the invention simplifies the device structure and optimizes its function. This invention enhances structural rigidity by incorporating a hollow column within the sealing transition section, improves assembly accuracy and sealing performance by designing a tapered section at the junction of the reset section and the sealing transition section, and optimizes the fluid transmission path through a rational flow guiding structure design. This not only improves the sealing effect and reset performance but also significantly reduces production costs, enhances device reliability and drug atomization effect, thereby meeting the requirements for efficient, stable, and low-cost use.

[0151] 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 external reset member, characterized by: The reset kit (160) comprises a corrugated section (1601) and a sleeve section (1602), the corrugated section (1601) and the sleeve section (1602) are integrally injection molded, the corrugated section (1601) is used for compression after being pressed, and the elongation reset after being pressed is removed or reduced, and the sleeve section (1602) is used for sleeving on a fixed position and sleeving on a matched part. A limiting part is arranged at the joint of the corrugated section (1601) and the sleeve section (1602), or a limiting part is arranged at the outer end of the sleeve section (1602), so that the outer end of the corrugated section (1601) can move in and out, and the sleeve section (1602) is used for limiting and fixing.

2. An external reset member as claimed in claim 1, characterized in that The outer end of the corrugated section (1601) is provided with an upper clamping part (16011), the upper clamping part (16011) comprises a contact port (160111) and a spacing protrusion (160112), the contact port (160111) and / or the spacing protrusion (160112) are used for contact limiting, and the spacing protrusion (160112) is arranged in a clamping misalignment mode and is used for preventing rotation limiting.

3. The external reset member of claim 1, wherein The sleeve section (1602) is provided with a gas groove (16021), a middle contact part (16022) and a limiting protrusion (16023); the gas groove (16021) is arranged on the inner wall of the barrel of the sleeve section (1602), the limiting protrusion (16023) is arranged at the outer end of the barrel of the sleeve section (1602), and the middle contact part (16022) is arranged at the joint of the sleeve section (1602) and the corrugated section (1601); the gas groove (16021) is arranged along the inner wall of the barrel of the sleeve section (1602) and extends to the outer port of the barrel, so that the internal airflow can flow when the corrugated section (1601) is deformed.

4. An external reset member as claimed in claim 2, wherein the reset member is formed from a material having a hardness of between 50 and 70 on the Shore D scale. The contact port (160111) is a circular ring or an elliptical ring end face; the contact port (160111) is arranged outside the spacing protrusion (160112), and the two are arranged in a spaced manner.

5. An external reset member as claimed in claim 2, wherein The limiting part is a radial protrusion or a matched non-radial protrusion; The protruding shape of the spacing protrusion (160112) comprises any one of a cylindrical shape, a rectangular column shape, a square cone shape, a spherical protrusion, a semicylindrical shape, a trapezoidal protrusion, a sawtooth shape and a wave shape.

6. An external reset member as claimed in claim 3, wherein The barrel of the sleeve section (1602) is inwardly contracted to form a ring, forming the middle contact part (16022), which is used for supporting the last section of the corrugated section (1601), and the inside of the sleeve section (1602) is used for limiting and matching parts.

7. A nasal administration aerosol device using the external reset member according to any one of claims 1 to 6, characterized by The reset kit (160) is used for resetting the piston assembly and the spray pump assembly, and is used for resetting the piston assembly by contacting the piston assembly or the connecting accessory of the piston assembly.

8. A nasal aerosol device for administration according to claim 7, wherein The piston assembly includes a piston I (50), a piston II (60), and a piston III (70); the spray pump assembly includes a main column (90), a secondary column (110), a reset spring (120), a pressing cap (140), a dosing booster (30), a sealing cap (20), a sealing gasket (190), a container (10); a reset sleeve (160) is used to reset the piston assembly; the liquid output assembly (40) is provided with the secondary column (110) on the outlet side, and the secondary column (110) is reset through the reset spring (120) and cooperates with the one-way valve assembly; the pressing cap (140) includes an outward extension, and the extension is used to increase the operation pressure area.

9. A nasal aerosol device for administration according to claim 8, wherein One compression stroke or expansion stroke of the initial section of the piston assembly makes the gas in the cavity I enter the cavity II, and the other corresponding stroke makes the cavity II negative pressure, so that the liquid or gas-liquid mixture in the cavity II enters and fills the cavity I; the continuous compression stroke or expansion stroke after the initial section of the piston assembly makes the liquid or gas-liquid mixture in the cavity I atomized through the nozzle.

10. A nasal aerosol device for administration according to claim 9, wherein The continuous compression stroke or expansion stroke after the initial section of the piston assembly makes the liquid or gas-liquid mixture in the cavity I unlock the one-way valve assembly, and the nozzle is provided with the one-way valve assembly in front; in the continuous compression stroke or expansion stroke after the initial section of the piston assembly, the liquid or gas-liquid mixture in the cavity I opens the one-way valve assembly.

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