Buffered aerosol dosing device and system

Abstract

The utility model discloses a buffering aerosol dosing device and a buffering aerosol dosing system. Comprising a cavity, a suction nozzle, two first pressing push buttons, two first springs, a bottom cover, an inspiration control structure and an expiration control structure. In the buffering aerosol dosing device, the cavity and the suction nozzle are assembled and separated by means of the first pressing push button. Furthermore, the cavity and the bottom cover are assembled and separated by means of a second pressing push button. Operation is simple, connection is stable, and cleaning is convenient.

Description

Technical Field

[0001] The utility model relates to a buffering aerosol dispenser and a system. Background Art

[0002] A metered dose inhaler (MDI) sprays a metered amount of medication into the user's mouth and nose. The outlet flow rate of a metered dose inhaler (MDI) is relatively high, and the aerosol is deposited in the user's mouth and nose, preventing it from entering the user's lungs.

[0003] Chinese utility model patent CN215461014U proposes a spacer and inhalation device. The aerosol device sprays a fixed amount of aerosol into the spacer, which is then buffered by the spacer before entering the user's mouth and nose, thus improving the user experience. Figure 1 and Figure 2 The solution essentially involves the bottom of the cylinder fitting over the top of the base (a snap-fit ​​connection), and the top of the cylinder fitting over the bottom of the upper end cap (a snap-fit ​​connection). This allows for easy disassembly and assembly of the cylinder and base, as well as the cylinder and upper end cap. Since three components are already removable, this solution further proposes that the upper end cap and suction cap be fixedly connected using ultrasonic welding. Utility Model Content

[0004] The utility model provides a buffering aerosol dispenser and a system.

[0005] The technical solution of the utility model is as follows: A buffered aerosol dispenser comprises: a cavity, a mouthpiece, two first push buttons, two first springs, a bottom cover, an inhalation control structure and an exhalation control structure;

[0006] The first push button is an integrally formed structure, comprising a pressing portion, a first buckle, two second buckles, and a positioning structure, wherein the first buckle is connected to the pressing portion and extends downward, and the two second buckles and the positioning structure are both connected to the pressing portion and extend horizontally toward the inner side of the buffer aerosol dispenser;

[0007] The cavity is an integrally formed structure, providing a gas passage extending in the vertical direction and having two first buckle positions arranged outside the gas passage, the two first buckle positions being arranged opposite to each other along the diameter direction of the cavity, the first buckle positions being hollow, and the hollow area of ​​the first buckle position extending out of the first buckle position upward and in a direction away from the other first buckle position;

[0008] The nozzle is an integrally formed structure comprising a main shell and two sleeves. The main shell provides an air passage extending vertically. The two sleeves are arranged outside the main shell and extend along the diameter of the main shell, with their openings facing each other.

[0009] The first push button, the first buckle position, the sleeve, and the first spring are arranged in a one-to-one correspondence with each other;

[0010] The first spring is located in the corresponding sleeve, and the two ends of the first spring are respectively connected to the main shell of the nozzle and the positioning structure of the first push button;

[0011] The pressing portion of the first push button is located in the corresponding sleeve. The bottom of the sleeve is provided with a vacant area extending to the end surface facing away from the other sleeve, so as to enable and limit the movement of the first push button along the extension direction of the corresponding sleeve. The sleeve is provided with two vacant areas opposite to each other in the horizontal direction at the end facing the other sleeve, so as to clamp the free ends of the two second buckles of the corresponding first push button.

[0012] When the first push button is in an extreme position away from the other first push button, the free end of the first buckle of the first push button buckles the upper boundary of the vacant area on the end surface of the first buckle position facing away from the other first buckle position. When the first push button is in an extreme position close to the other push button, the first buckle of the first push button can be moved to disengage from the first buckle position (i.e., the entire assembly consisting of the first push button and the nozzle can be detached).

[0013] The bottom cover is detachably fixed to the lower end of the cavity, and the inhalation control structure is used to allow gas to flow out of the nozzle from the cavity through the main shell of the nozzle in one direction, and the exhalation control structure is used to allow gas to flow out of the nozzle from the upper end opening of the main shell of the nozzle through the internal space of the main shell of the nozzle in one direction.

[0014] Optionally, the cavity has a cylindrical portion and a step portion, the cylindrical portion is cylindrical, a first opening of the cylindrical portion is detachably fixedly connected to the bottom cover, the step portion covers the second opening of the cylindrical portion, a middle portion of the step portion protrudes upward to form a boss, a first vent is provided on the top surface of the boss, the first vent is communicated with the internal space of the cylindrical portion, the first buckle is connected to the step portion, the first buckle is a frame structure, the upper portion of the first buckle has a third notch, and a side facing away from the boss has a second notch, the third notch is communicated with the second notch and the internal space of the first buckle;

[0015] The main shell of the suction nozzle defines a three-step through hole, the sleeve of the suction nozzle is opposite to the diameter center section of the three-step through hole, and the main shell corresponding to the largest diameter section of the three-step through hole is sleeved on the boss of the step portion of the cavity.

[0016] Optionally, the positioning structure of the first push button is a cross-shaped positioning rib.

[0017] Optionally, the suction nozzle further includes a first positioning rib connected to the bottom of the sleeve, the first positioning rib extends downward, and the first positioning rib is inserted into the hollow area of ​​the first buckle position.

[0018] Optionally, a first positioning groove is opened on the lower end surface of the suction nozzle, the first buckle is connected to the bottom area of ​​the outer peripheral surface of the boss through a fixing rib, a first notch is formed above the fixing rib, and the first positioning groove is installed on the fixing rib through the first notch.

[0019] Optionally, it further includes two second push buttons and two second springs;

[0020] The second push button is an integrally formed structure, comprising a pressing plate, a third buckle, two fourth buckles, and a first positioning post, wherein the first positioning post and the fourth buckle are located on the same side of the pressing plate and extend horizontally toward the inner side of the buffer aerosol dispenser, and the third buckle extends upward;

[0021] The cavity further has two second buckles located at the first opening of the cylindrical portion thereof, and the second buckles are arc-shaped flat plates;

[0022] The bottom cover has an integrally formed hard portion, the hard portion of the bottom cover having four first through holes for inserting the fourth buckle of the second push button, the edges of the first through holes forming a third buckle position for limiting separation of the fourth buckle from the bottom cover, and the hard portion of the bottom cover further having two second positioning posts, the second positioning posts being disposed between adjacent first through holes and extending radially outward;

[0023] The second pressing button, the second spring, and the second positioning column are arranged in a one-to-one correspondence with each other;

[0024] The two ends of the second spring are respectively sleeved on the corresponding second positioning column and the corresponding first positioning column of the second push button and abut against the bottom cover and the pressing plate of the second push button;

[0025] The free end of the third buckle of the second push button buckles the second buckle position to limit the axial separation of the bottom cover and the cylindrical portion;

[0026] The outer circumference of the bottom cover on one side of the section facing the cylindrical portion has two concave sections, and the second buckle is located between the two concave sections for limiting the rotation of the bottom cover relative to the cylindrical portion.

[0027] Optionally, the bottom cover includes a first annular curved plate, a first annular flat plate, a second annular curved plate, and a second annular flat plate connected in sequence from top to bottom, the first annular curved plate defines a first cylindrical internal space, the second annular curved plate defines a second cylindrical internal space, and a central opening area of ​​the second annular flat plate, the second cylindrical internal space, the central opening area of ​​the first annular flat plate, and the first cylindrical internal space are sequentially connected to form a through hole;

[0028] The second annular curved plate has two mutually opposing concave sections corresponding one to each of the second push buttons. The pressing plate of the second push button is arranged opposite to the corresponding concave sections of the second annular curved plate. The first through hole, which engages with the fourth snap fit of the second push button, is provided in the concave section of the second annular curved plate.

[0029] The first annular plate has two mutually opposite concave sections arranged in a one-to-one correspondence with the second push buttons, and the concave sections of the first annular plate are used to avoid the third buckle of the second push button;

[0030] The first annular curved plate is inserted into the first opening of the cylindrical portion. The first annular curved plate has two concave sections opposite to each other, which are arranged one-to-one with the second push button. The second buckle is located in the concave section corresponding to the first annular curved plate, so as to limit the rotation of the bottom cover relative to the cylindrical portion.

[0031] Optionally, the air suction control structure is a plum blossom gasket, which is arranged on the top surface of the boss of the step portion.

[0032] Optionally, the exhalation control structure is a valve structure, wherein a second vent is formed on the main housing of the mouthpiece, and the valve structure comprises an elastic valve plate that covers the second vent. The valve plate structure adopts a thin plate design, which is easy to open and close and has a relatively sensitive structure.

[0033] The technical solution of the utility model is as follows: a buffered aerosol drug delivery system, comprising a pressure-type quantitative aerosol device and the above-mentioned buffered aerosol drug delivery device.

[0034] The utility model provides a buffer aerosol dispenser with a novel detachable design. The disassembly and assembly processes of the buffer aerosol dispenser are simpler, and the assembled state is more stable and convenient for cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a three-dimensional diagram of the assembled state of the buffer aerosol dispenser of the present invention.

[0036] Figure 2 It is an exploded view of the buffer aerosol dispenser of the present utility model.

[0037] Figure 3 It is a three-dimensional diagram of a part of the cavity.

[0038] Figure 4 It is a three-dimensional diagram of the cavity.

[0039] Figure 5 and Figure 6 It is a three-dimensional diagram of the nozzle.

[0040] Figure 7 and Figure 8 It is a three-dimensional diagram of the first push button.

[0041] Figure 9 and Figure 10 It is a three-dimensional diagram of the second push button.

[0042] Figure 11 and Figure 12 This is a three-dimensional image of the bottom cover.

[0043] Figure 13 It is a three-dimensional image of plum petals.

[0044] Figure 14 and Figure 15 It is a three-dimensional diagram of the nozzle buckle.

[0045] Figure 16 and Figure 17 It is a three-dimensional diagram of the valve structure.

[0046] Figure 18 It is a three-dimensional diagram of the dust cap.

[0047] Figure 19 It is a schematic diagram of the local structure near the nozzle of the buffered aerosol dispenser.

[0048] Figure 20 It is a schematic diagram of the local structure near the bottom cover of the buffer aerosol dispenser.

[0049] The attached marks are as follows:

[0050] 1. Cavity; 12. Fixing surface; 13. First socket surface; 14. First buckle position; 15. Fixing rib; 16. First fixing column; 17. Second buckle position; 18. Cylindrical portion; 19. First vent hole; 1a. First notch; 1b. Second notch; 1c. Third notch; 1d. Plate-shaped area;

[0051] 2. Suction nozzle; 21. Mouthpiece; 22. Fixing male buckle; 23. First positioning rib; 24. Sleeve; 25. Vertical rib; 26. Second socket surface; 27. First positioning groove; 28. Positioning boss; 29. ​​Second positioning rib; H. 3-step stepped through hole; 2a. Fourth notch; 2b. Fifth notch; 2c. Extension; 2d. Second vent hole; 2e. Second through hole;

[0052] 3. Dust cap; 31. Cap body; 32. Visor; 33. Fixed female buckle;

[0053] 4. First push button; 41. Second buckle; 42. First buckle; 43. Pressing portion; 44. Positioning rib;

[0054] 5. Nozzle buckle; 51. Fifth buckle; 52. Exhaust hole;

[0055] 6. Bottom cover; 61. Soft rubber ring; 62. Second positioning post; 63. Third buckle position; 64. Second annular flat plate; 65. Second annular curved plate; 66. First annular flat plate; 67. First annular curved plate; 650. First through hole; 670. Sixth notch;

[0056] 7. Second push button; 71. Fourth buckle; 72. Third buckle; 73. First positioning column; 74. Pressing plate;

[0057] 8. Second spring;

[0058] 9. First spring;

[0059] 10. Plum blossom gasket; 101. Petal; 102. Positioning hole;

[0060] 11. Valve structure; 111. Valve plate; 112. Step surface; 113. Second positioning groove; 114. Mounting surface. DETAILED DESCRIPTION

[0061] The present invention will be further described below with reference to specific embodiments, but the protection scope of the present invention is not limited thereto.

[0062] The upper and lower positional relationship described in the present invention is defined as a state in which the bottom cover of the buffer aerosol dispenser is placed downward on a horizontal surface.

[0063] refer to Figure 1 and Figure 2 An embodiment of the present invention provides a buffered aerosol dispenser, comprising: a cavity 1, a mouthpiece 2, two first push buttons 4, a bottom cover 6, two first springs 9, an inhalation control structure (e.g., a plum blossom gasket 10) and an exhalation control structure (e.g., a valve structure 11).

[0064] refer to Figure 3 and Figure 4 The cavity 1 is an integrally formed structure, including: a cylindrical portion 18 , a step portion, two first buckle positions 14 and two second buckle positions 17 .

[0065] The cylindrical portion 18 is cylindrical with two openings at both ends. The first opening of the cylindrical portion 18 is removably fixedly connected to the bottom cover 6, which is used to receive metered-dose aerosol from the pressure-type metered-dose aerosol device. Specifically, the opening of the bottom cover 6 and the outlet of the pressure-type metered-dose aerosol device are aligned, and the outlet of the pressure-type metered-dose aerosol device is connected to the opening of the bottom cover 6. The cylindrical portion 18 is not limited to a straight cylindrical shape and can, for example, be a curved cylindrical shape or a stepped cylindrical shape.

[0066] The step portion covers the second opening of the cylindrical portion 18, and the middle portion of the step portion protrudes in a direction away from the cylindrical portion 18 to form a boss. The top surface of the boss is the fixing surface 12, and the fixing surface 12 is provided with a vent hole 19 connected to the hollow area of ​​the cylindrical portion 18. The outer peripheral surface of the boss is the first socket surface 13.

[0067] Reference Figure 3 and Figure 5 The first buckle positions 14 are frame structures. Two first buckle positions 14 are connected to the first socket surface 13 (for example, the area outside the boss on the top surface of the step portion). The two first buckle positions 14 are arranged opposite each other. The top surface of the first buckle position 14 has a vacant area (third notch 1c), and the surface of the first buckle position 14 facing away from the other first buckle position 14 has a vacant area (second notch 1b).

[0068] refer to Figure 5 and Figure 6 The nozzle 2 is an integrally formed structure, comprising a main housing and two sleeves 24. The main housing forms a three-step through-hole H. The inner circumference of the main housing corresponding to the largest diameter section of the three-step through-hole H forms a second socket surface 26. In the assembled state, the first socket surface 13 mates with the second socket surface 26.

[0069] The section of the main housing with the smallest diameter corresponding to the three-step through hole H forms a mouthpiece 21 for the user to hold in the mouth. The mouthpiece 21 can also be connected to a mask (not shown) for the user to breathe through the nasal cavity.

[0070] The two sleeves 24 are both cylindrical, with their openings facing each other, and the center line between them passes through the axis of the three-step through hole H. The first opening of the sleeve 24 is connected to the outer circumference of the middle diameter section of the main housing corresponding to the three-step through hole H.

[0071] Specifically, the sleeve 24 is a rectangular cylinder, and a fourth notch 2a is formed on two horizontally opposite side walls of the sleeve 24 near the main housing.

[0072] The fixing rib 15 below the first notch 1a securely connects the plate-shaped area 1d of the first buckle 14 to the first socket surface 13. During assembly, the first positioning rib 23 is inserted between the plate-shaped areas 1d of the first buckle 14 that face each other along the tangent direction of the first socket surface 13.

[0073] Combine Figure 2 and Figure 5 The two first springs 9 are arranged in a one-to-one correspondence with the two sleeves 24. The first springs 9 are located in the corresponding sleeves 24. The first ends of the first springs 9 abut against the outer peripheral surface of the diameter center section of the corresponding three-step through hole H of the main shell.

[0074] Reference Figure 2 and Figure 7 The first push button 4 is an integrally formed structure, including: a pressing portion 43, a first buckle 42 and two second buckles 41. The first push button 4 is arranged in a one-to-one correspondence with the sleeve 24. The first push button 4 is located in the corresponding sleeve 24 and can move along the extension direction of the sleeve 24.

[0075] The surface of the pressing portion 43 of the first push button 4 facing away from the main housing serves as a pressing surface for the user to press.

[0076] The second end of the first spring 9 abuts against the surface of the corresponding first push button 4 facing the middle diameter section of the corresponding three-step step through hole H of the main housing. Figure 8 A positioning rib 44 is provided on the side of the pressing portion 43 of the first push button 4 that faces the main housing. The second end of the first spring 9 is sheathed on the positioning rib 44 to prevent the first spring 9 from shaking. To further limit the radial movement of the first push button 4 along the main housing, a cross-shaped positioning rib (not shown) may be provided on the outer circumference of the main housing. The cross-shaped positioning rib on the main housing and the cross-shaped positioning rib 44 of the first push button 4 both extend radially along the main housing, with the centerline connecting the two extending in the radial direction of the main housing.

[0077] The main housing has a three-step through-hole shape in order to reduce the overall size and make the structure compact. If space permits, the main housing can also have a two-step through-hole shape or a straight cylindrical shape.

[0078] The bottom wall of the sleeve 24 is provided with a fifth notch 2b at its free end (the end facing away from the main housing). The first latch 42 enters the interior space of the first latching position 14 through the fifth notch 2b in the bottom section of the sleeve 24 and the third notch 1c on the top surface of the first latching position 14. The first spring 9 pushes the first push button 4 away from the main housing. The second notch 1b on the surface of the first latching position 14 facing away from the other first latching position 14 serves to limit the free end of the first latch 42.

[0079] The two second clips 41 extend toward the main housing. When the first spring 9 pushes the first push button 4 away from the main housing, the free ends of the two second clips 41 are buckled in the fourth notches 2a on the two side walls of the sleeve 24 that are opposite to each other in a direction parallel to the plane of the main housing.

[0080] The fixing rib 15 below the second notch 1b on the first buckle position 14 cooperates with the first positioning groove 27 on the end face of the suction nozzle 2 (the end face away from the mouthpiece 21) to prevent the first push button 4 and the suction nozzle 2 from rotating as a whole.

[0081] refer to Figure 19 During the assembly process, place the first spring 9 into the sleeve 24, insert the two second clips 41 of the first push button 4 into the sleeve 24, and the fourth notch 2a on the sleeve 24 cooperates with the second clips 41 to prevent the sleeve 24 from separating from the first push button 4. Cover the entirety of the suction nozzle 2, the first spring 9 and the first push button 4 on the cavity 1. The first clip 42 of the first push button 4 passes through the fifth notch 2b and the third notch 1c and extends into the hollow area of ​​the first buckle position 14. Release the first push button 4, and the first spring 9 pushes the first push button 4 to the extreme position in the direction away from the main shell. The first clip 42 hooks out the edge of the second notch 1b to prevent the cavity 1 from separating from the suction nozzle 2.

[0082] refer to Figure 19 During the disassembly process, the first push button 4 is pressed toward the main shell to the extreme position, the end of the first buckle 42 is separated from the second notch 1b on the first buckle position 14, and the whole composed of the suction nozzle 2, the first spring 9 and the first push button 4 is moved away from the cavity 1 along the axial direction of the cylindrical portion 18, and the first buckle 42 of the first push button 4 is separated from the first buckle position 14 through the third notch 1c on the first buckle position 14.

[0083] The assembly and disassembly process is simple to operate, the structure is stable, and the positioning accuracy is high.

[0084] The material of the nozzle 2 may be a thermoplastic polymer material (such as acrylonitrile-styrene-butadiene copolymer or polyethylene terephthalate-1,4-cyclohexanedimethanol).

[0085] The material of the cavity 1 may be a thermoplastic polymer structural material (such as acrylonitrile-styrene-butadiene copolymer or polyethylene terephthalate-1,4-cyclohexanedimethanol).

[0086] refer to Figure 11 and Figure 12 The bottom cover 6 includes a hard part and a soft rubber ring 61. The hard part is an integrally formed structure, including a first annular curved plate 67, a first annular flat plate 66, a second annular curved plate 65, and a second annular flat plate 64 connected in sequence.

[0087] The first annular curved plate 67 defines a first cylindrical interior space, and the second annular curved plate 65 defines a second cylindrical interior space. The central opening area of ​​the second annular flat plate 64, the second cylindrical interior space, the central opening area of ​​the first annular flat plate 66, and the first cylindrical interior space are sequentially connected to form a stepped through hole.

[0088] The soft rubber ring 61 is located in the middle opening of the second annular flat plate 64. When in use, the air outlet of the pressure-type quantitative aerosol device is inserted into the soft rubber ring 61.

[0089] The second annular curved plate 65 has two concave sections. First through holes 650 are formed on both sides of the bottom of the concave section of the second annular curved plate 65. The edges of the first through holes 650 form third buckle positions 63.

[0090] A second positioning post 62 is provided in the central section of the concave section of the second annular curved plate 65 .

[0091] The first annular curved panel 67 has two concave sections, the first annular flat plate 66 has two concave sections, and the outer periphery of the second annular flat plate 64 has two concave sections. The concave sections of the first annular curved panel 67, the first annular flat plate 66, the second annular curved panel 65, and the second annular flat plate 64 are projected in two centrally symmetrical fan-shaped areas on the plane where the bottom cover 6 is located. A sixth notch 670 is provided at the boundary of the concave section of the first annular curved panel 67 facing the first annular flat plate 66.

[0092] Reference Figure 2 、 Figure 9 and Figure 10 The second push button 7 is an integrally formed structure, including a pressing plate 74, a first positioning column 73, a third buckle 72 and two fourth buckles 71.

[0093] The pressing plate 74 is used for the user to press. In this embodiment, the pressing plate 74 is a curved plate. In other embodiments, the pressing plate 74 can also be a flat plate.

[0094] Combine Figure 2 、 Figure 9 and Figure 10 The first positioning column 73 and the two fourth clips 71 are arranged on the inner side surface of the pressing plate 74 (the surface facing the bottom cover 6), the first positioning column 73 and the two fourth clips 71 extend in the same direction, the first positioning column 73 is located between the two fourth clips 71, and the extension direction of the third clip 72 is perpendicular to the plane where the two fourth clips 71 are located.

[0095] Reference Figure 4 Two second buckle positions 17 facing each other are provided at the first opening of the cylindrical portion 18 . The two second buckle positions 17 are arc-shaped flat plates, and the normal direction thereof is substantially the extension direction of the cylindrical portion 18 .

[0096] Combine Figure 2 The buffered aerosol dispenser further includes two second springs 8 corresponding to the two second annular curved plates 65 .

[0097] The first end of the second spring 8 is sleeved on the second positioning column 62 on the corresponding second annular curved plate 65 and abuts against the concave section of the second annular curved plate 65. The second end of the second spring 8 is sleeved on the first positioning column 73 corresponding to the second press button 7 and abuts against the inner side surface of the press plate 74 corresponding to the second press button 7.

[0098] The two fourth buckles 71 pass through the first through hole 650 of the concave section of the second annular curved plate 65 in a one-to-one correspondence and are locked at the edge of the first through hole 650 (ie, the third buckle position 63 ).

[0099] The second buckle position 17 is opposite to the concave section of the first annular flat plate 66 and abuts against the surface of the first annular flat plate 66 facing the first annular curved plate 67 , and the end of the third buckle 72 is clamped on the surface of the second buckle position 17 facing away from the first annular flat plate 66 .

[0100] The concave section of the first annular curved plate 67 is used to limit the second buckle position 17 to prevent the second buckle position 17 from rotating relative to the bottom cover 6 .

[0101] refer to Figure 20 During assembly, the first end of the second spring 8 is inserted into the second positioning post 62 on the second annular curved plate 65, and the fourth clip 71 is inserted into the first through-hole 650 of the second annular curved plate 65. The fourth clip 71 is restrained by the third buckle 63, preventing the second push button 7 from radially separating from the bottom cover 6. At this point, the pressing plate 74 is located on the side of the first annular flat plate 66 facing the second annular flat plate 64, keeping the second spring 8 in a compressed state. The first annular curved plate 67 is inserted into the first opening of the cylindrical portion 18, while the second buckle 17 is pressed against the surface of the first annular flat plate 66 facing the first annular curved plate 67. The second spring 8 is released, pushing the third clip 72 outward. The end of the third clip 72 buckles against the surface of the second buckle 17 facing away from the first annular flat plate 66.

[0102] During disassembly, the pressing plate 74 of the second pressing button 7 is pressed to drive the third buckle 72 to move radially inward. The end of the third buckle 72 releases the restriction on the second buckle position 17, and separates the whole composed of the second pressing button 7, the second spring 8 and the bottom cover 6 from the cylindrical portion 18.

[0103] The air suction control structure is detachably connected to the cavity and is used to control the air to flow unidirectionally from the inside of the cavity into the suction nozzle through the first vent hole 19 .

[0104] Specifically, combined Figure 3 and Figure 13The air intake control structure is a plum blossom gasket 10, which includes a plurality of petals 101 and a plurality of positioning holes 102 distributed around the plurality of petals 101. A plurality of first air vents 19 and a plurality of first fixing columns 16 are provided on the fixing surface 12. The plurality of first fixing columns 16 are inserted into the plurality of positioning holes 102 one by one, and the plurality of petals 101 cover the plurality of first air vents 19 one by one.

[0105] When inhaling, the side of the plum blossom gasket 10 facing away from the fixed surface 12 is under negative pressure, the plum blossom gasket 10 separates from the fixed surface 12, and the mist enters the nozzle from the cavity 1.

[0106] The exhalation control structure is fixedly connected to the mouthpiece 2 and is used to control the gas to flow unidirectionally from the mouthpiece 2 through the exhalation control structure out of the buffer aerosol dispenser.

[0107] Specifically, combined Figure 2 、 Figure 5 、 Figure 6 、 Figure 16 and Figure 17 The exhalation control structure is a valve structure 11, which is made of an integrally formed elastic material. The valve structure 11 includes: a valve plate 111 and a second positioning groove 113. The second positioning groove 113 is opened on the step surface 112, and the valve plate 111 is located at the edge of the step surface 112.

[0108] refer to Figure 20 During assembly, the second positioning groove 113 is inserted into the second positioning rib 29 . Figure 6 Four second positioning ribs 29 are shown, two of which are spare.

[0109] Specifically, refer to Figure 5 The suction nozzle 2 also includes an extension portion 2c extending radially outward from the main shell, and a second vent hole 2d is opened on the surface of the main shell corresponding to the largest diameter section of the 3-step step through hole H, and the valve plate 111 covers the second vent hole 2d.

[0110] When exhaling, the air pressure in the mouthpiece 2 increases, pushing the valve plate 111 away from the second vent hole 2d, thereby expelling the air from the mouthpiece 2.

[0111] When exhaling, the plum blossom gasket 10 presses the fixed surface 12, thereby blocking the first vent hole 19 on the fixed surface 12. When inhaling, the valve plate 11 blocks the second vent hole 2d.

[0112] The positioning boss 28 abuts against the stepped surface 112 of the valve structure 11 to limit the position of the valve structure 11. The mounting surface 114 of the valve structure 11 abuts against the outer circumference of the middle diameter section of the three-step through hole H of the main housing.

[0113] refer to Figure 6A vertical rib 25 is provided in the nozzle 2 , and in the assembled state, the vertical rib 25 presses the plum blossom gasket 10 to prevent the plum blossom gasket 10 from separating from the fixing surface 12 .

[0114] A first positioning groove 27 is provided on the end surface of the main shell facing the cavity 1 . In the assembled state, the first positioning groove 27 is installed in the first notch 1 a .

[0115] Optionally, a nozzle buckle 5 is further included, which is fixedly connected to the extension portion 2c to provide a gas passage from the second vent hole 2d to the outside of the buffer aerosol dispenser.

[0116] refer to Figure 14 、 Figure 15 The nozzle buckle 5 includes a fifth buckle 51 and an exhaust hole 52. During exhalation, the second vent 2d is connected to the exhaust hole 52 via the valve structure 11. The fifth buckle 51 is inserted into the second through hole 2e provided on the extension portion 2c.

[0117] Based on the same inventive concept, the present invention also provides a buffered aerosol dosing system, comprising the aforementioned buffered aerosol dosing device and a pressure-type quantitative aerosol device. The gas outlet of the pressure-type quantitative aerosol device is inserted into the opening in the middle of the bottom cover 6 of the buffered aerosol dosing device, thereby spraying a quantitative aerosol into the cavity 1.

[0118] The first buckle 42, the second buckle 41, the third buckle 73 and the fourth buckle 71 all include a strip-shaped flat area and a corner area at the free end of the flat area. The two second buckles 41 and the two fourth buckles 71 respectively constitute a split pin structure.

[0119] refer to Figure 1 、 Figure 2 、 Figure 5 and Figure 18 The buffered aerosol dispenser also includes a dust cap 3. The dust cap 3 comprises a cap body 31, a visor 32, and a fixing female buckle 33. During use, the fixing female buckle 33 engages with the fixing male buckle 22 on the mouthpiece 2 to prevent the dust cap 3 from being lost. The visor 32 allows the user to easily remove the dust cap 3. The cap body 31 is buckled onto the mouthpiece 21.

[0120] In some specific examples, the material of the dust cap 3 is, for example, soft thermoplastic rubber TPR, the material of the nozzle 2 is, for example, acrylonitrile-styrene-butadiene copolymer ABS or polyethylene terephthalate-1,4-cyclohexane dimethanol PETG, the material of the valve structure 11 is, for example, silicone, the material of the nozzle buckle 5 is, for example, ABS or PETG, the material of the plum blossom gasket 10 is, for example, silicone, the material of the first push button 4 is, for example, ABS or PETG, the material of the cavity 1 is, for example, ABS or PETG, the material of the second push button 7 is ABS, the hard part of the bottom cover 6 is made of hard ABS, and the soft rubber ring 61 of the bottom cover 6 is made of soft TPR.

[0121] The various embodiments of the present invention are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0122] The scope of protection of the present invention is not limited to the above-described embodiments. Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the scope and spirit of the present invention. If such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A buffered aerosol dispenser, characterized in that: include: Cavity, mouthpiece, two first push buttons, two first springs, bottom cover, inhalation control structure and exhalation control structure; The first push button is an integrally formed structure, comprising a pressing portion, a first buckle, two second buckles, and a positioning structure, wherein the first buckle is connected to the pressing portion and extends downward, and the two second buckles and the positioning structure are both connected to the pressing portion and extend horizontally toward the inner side of the buffer aerosol dispenser; The cavity is an integrally formed structure, providing a gas passage extending in the vertical direction and having two first buckle positions arranged outside the gas passage, the two first buckle positions being arranged opposite to each other along the diameter direction of the cavity, the first buckle positions being hollow, and the hollow area of ​​the first buckle position extending out of the first buckle position upward and in a direction away from the other first buckle position; The nozzle is an integrally formed structure comprising a main shell and two sleeves. The main shell provides an air passage extending vertically. The two sleeves are arranged outside the main shell and extend along the diameter of the main shell, with their openings facing each other. The first push button, the first buckle position, the sleeve, and the first spring are arranged in a one-to-one correspondence with each other; The first spring is located in the corresponding sleeve, and the two ends of the first spring are respectively connected to the main shell of the nozzle and the positioning structure of the first push button; The pressing portion of the first push button is located in the corresponding sleeve. The bottom of the sleeve is provided with a vacant area extending to the end surface facing away from the other sleeve, so as to enable and limit the movement of the first push button along the extension direction of the corresponding sleeve. The sleeve is provided with two vacant areas opposite to each other in the horizontal direction at the end facing the other sleeve, so as to clamp the free ends of the two second buckles of the corresponding first push button. When the first push button is in an extreme position away from the other first push button, the free end of the first buckle of the first push button buckles the upper boundary of the vacant area on the end surface of the first buckle position facing away from the other first buckle position; when the first push button is in an extreme position close to the other push button, the first buckle of the first push button can be moved out of the first buckle position; The bottom cover is detachably fixed to the lower end of the cavity, and the inhalation control structure is used to allow gas to flow out of the nozzle from the cavity through the main shell of the nozzle in one direction, and the exhalation control structure is used to allow gas to flow out of the nozzle from the upper end opening of the main shell of the nozzle through the internal space of the main shell of the nozzle in one direction.

2. The buffered aerosol dispenser according to claim 1, characterized in that: The cavity comprises a cylindrical portion and a step portion, the cylindrical portion is cylindrical, a first opening of the cylindrical portion is detachably fixedly connected to the bottom cover, the step portion covers the second opening of the cylindrical portion, a middle portion of the step portion protrudes upward to form a boss, a first vent is provided on the top surface of the boss, the first vent is communicated with the internal space of the cylindrical portion, the first buckle is connected to the step portion, the first buckle is a frame structure, the upper portion of the first buckle has a third notch, and the side facing away from the boss has a second notch, the third notch is communicated with the second notch and the internal space of the first buckle; The main shell of the suction nozzle defines a three-step through hole, the sleeve of the suction nozzle is opposite to the diameter center section of the three-step through hole, and the main shell corresponding to the largest diameter section of the three-step through hole is sleeved on the boss of the step portion of the cavity.

3. The buffered aerosol dispenser according to claim 1, characterized in that: The positioning structure of the first push button is a cross-shaped positioning rib.

4. The buffered aerosol dispenser according to claim 1, characterized in that: The suction nozzle also includes a first positioning rib connected to the bottom of the sleeve, the first positioning rib extends downward, and the first positioning rib is inserted into the hollow area of ​​the first buckle position.

5. The buffered aerosol dispenser according to claim 2, characterized in that: A first positioning groove is provided on the lower end surface of the suction nozzle, the first buckle position is connected to the bottom area of ​​the outer peripheral surface of the boss through a fixing rib, a first notch is formed above the fixing rib, and the first positioning groove is installed on the fixing rib through the first notch.

6. The buffered aerosol dispenser according to claim 2, characterized in that: Also includes two second push buttons and two second springs; The second push button is an integrally formed structure, comprising a pressing plate, a third buckle, two fourth buckles, and a first positioning post, wherein the first positioning post and the fourth buckle are located on the same side of the pressing plate and extend horizontally toward the inner side of the buffer aerosol dispenser, and the third buckle extends upward; The cavity further has two second buckle positions located at the first opening of the cylindrical portion thereof, and the second buckle positions are arc-shaped flat plates; The bottom cover has an integrally formed hard portion, the hard portion of the bottom cover having four first through holes for inserting the fourth buckle of the second push button, the edges of the first through holes forming a third buckle position for limiting separation of the fourth buckle from the bottom cover, and the hard portion of the bottom cover further having two second positioning posts, the second positioning posts being disposed between adjacent first through holes and extending radially outward; The second pressing button, the second spring, and the second positioning column are arranged in a one-to-one correspondence with each other; The two ends of the second spring are respectively sleeved on the corresponding second positioning post and the corresponding first positioning post of the second push button and abut against the bottom cover and the pressing plate of the second push button; The free end of the third buckle of the second push button buckles the second buckle position to limit the axial separation of the bottom cover and the cylindrical portion; The outer circumference of the bottom cover on one side of the section facing the cylindrical portion has two concave sections, and the second buckle is located between the two concave sections for limiting the rotation of the bottom cover relative to the cylindrical portion.

7. The buffered aerosol dispenser according to claim 6, characterized in that: The bottom cover includes a first annular curved plate, a first annular flat plate, a second annular curved plate, and a second annular flat plate connected in sequence from top to bottom, the first annular curved plate defining a first cylindrical internal space, the second annular curved plate defining a second cylindrical internal space, a central opening area of ​​the second annular flat plate, the second cylindrical internal space, the central opening area of ​​the first annular flat plate, and the first cylindrical internal space being connected in sequence to form a through hole; The second annular curved plate has two mutually opposing concave sections corresponding one to each of the second push buttons. The pressing plate of the second push button is arranged opposite to the corresponding concave sections of the second annular curved plate. The first through hole, which engages with the fourth snap fit of the second push button, is provided in the concave section of the second annular curved plate. The first annular plate has two mutually opposite concave sections arranged in a one-to-one correspondence with the second push buttons, and the concave sections of the first annular plate are used to avoid the third buckle of the second push button; The first annular curved plate is inserted into the first opening of the cylindrical portion. The first annular curved plate has two concave sections opposite to each other, which are arranged one-to-one with the second push button. The second buckle is located in the concave section corresponding to the first annular curved plate, so as to limit the rotation of the bottom cover relative to the cylindrical portion.

8. The buffered aerosol dispenser according to claim 2, characterized in that: The air intake control structure is a plum blossom gasket, which is arranged on the top surface of the boss of the step portion.

9. The buffered aerosol dispenser according to claim 1, characterized in that: The exhalation control structure is a valve structure. A second vent hole is provided on the main shell of the mouthpiece. The valve structure has an elastic valve sheet, and the valve sheet covers the second vent hole.

10. A buffered aerosol drug delivery system, characterized in that: The invention comprises a pressure-type metered-dose aerosol device and a buffered aerosol dispenser according to any one of claims 1 to 9.

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