Aerosol delivery device

Abstract

The utility model discloses an aerosol administration device. The aerosol administration device comprises a mouth-nose contact component, a mist storage cylinder, a connector and a two-way valve plate, and can simultaneously control the inhalation process and the exhalation process by a single valve plate.

Description

Technical Field

[0001] This utility model relates to an aerosol drug delivery device. Background Technology

[0002] MDI (Metered Dose Inhaler) is a pressure-controlled metered-dose aerosol device used to nebulize medications and inhale them into the lungs through the mouth or nose to treat lung diseases such as asthma and COPD.

[0003] CN213994484U discloses a nasal aerosol delivery device, comprising a bottom cover, a reservoir, and a top cover. The bottom cover is fitted with a connector for connecting to an external pressure-type metered aerosol device. A top seat is located at the top of the reservoir, and the top cover is fastened to the top seat. An inhalation valve is mounted on the top seat. A mouthpiece is mounted on the top cover, and an exhalation valve is mounted on the outer surface of the top cover. During inhalation, the inhalation valve protrudes from the inhalation grid, and the exhalation valve presses against the exhalation grid under pressure, allowing the patient to inhale. During exhalation, the exhalation valve protrudes from the exhalation grid, and the inhalation valve presses against the inhalation grid under pressure, allowing the patient to exhale. This design involves independently designing the exhalation and inhalation valves, as well as the corresponding exhalation and inhalation grids, resulting in a complex product structure.

[0004] CN220424304U discloses a high-efficiency nasal and oral aerosol delivery device, including an aerosol socket, a suction cup, an air bag, an air valve, a suction cap, a support tube, an exhalation membrane, an inhalation membrane, and a face mask. The aerosol socket is inserted into the suction cup, and the suction cup interface is connected to the suction cap interface. The air bag is connected to an air hole on the side of the suction cup. An air inlet valve is installed at the bottom of the air bag, and an air outlet valve is installed at the top of the air bag. The air outlet valve of the air bag is connected to the suction cup. An inhalation membrane is installed at the bottom of the suction cap, and the support tube is installed on the suction cap. An exhalation membrane is placed in a groove in the face mask, and a fixing post of the exhalation membrane is installed into a fixing hole in the face mask. This design involves independently designing the inhalation and exhalation membranes, resulting in a complex product structure. Utility Model Content

[0005] This invention provides an aerosol drug delivery device to simplify product structure and reduce costs.

[0006] This utility model provides the following technical solution: an aerosol drug delivery device, comprising: a mouth and nose contact component, a mist storage cylinder, a connector, and a two-way valve plate, wherein the mouth and nose contact component is fixed to the first end of the mist storage cylinder, the mouth and nose contact component has an aerosol outlet and an exhaust port, the mouth and nose contact component is used to deliver the aerosol in the mist storage cylinder to the user's mouth or nasal cavity, and the connector is fixed to the second end of the mist storage cylinder, the connector being used to connect to a pressure-type metered aerosol device;

[0007] The first end of the mist storage cylinder has a boss structure, and multiple edge areas of the end face of the boss structure are slopes. The slopes are inclined radially away from the center of the end face towards the second end of the mist storage cylinder. The remaining area of ​​the end face of the boss structure is a flat area. Slopes and flat surfaces are alternately arranged along the circumference of the edge area of ​​the end face of the boss structure. Multiple vent holes are provided on the flat area of ​​the end face of the boss structure.

[0008] The bidirectional valve plate is fixed on the planar area of ​​the end face of the boss structure and is opposite to the slope along the length of the mist storage cylinder. The middle part of the bidirectional valve plate is provided with multiple petals, which are configured to cover all the vent holes, and some petals are correspondingly opposite to the slope along the length of the mist storage cylinder.

[0009] The mouth and nose contact component is sleeved on the boss structure. The mouth and nose contact component is provided with multiple limiting structures. The limiting structures abut against the edge area of ​​the bidirectional valve plate to limit the extreme position of the edge area of ​​the bidirectional valve plate tilting up along the direction from the second end of the mist storage cylinder to the first end.

[0010] The mouth and nose contact component has an exhaust port in the area that is radially opposite to the slope. When the bidirectional valve plate is in a flat state, the bidirectional valve plate is in airtight contact with the inner circumferential surface of the mouth and nose contact component.

[0011] The flap is configured to tilt upwards during inhalation so that the mist storage cylinder communicates with the mist outlet of the mouth and nose contact component, and the limiting structure keeps the exhaust port of the mouth and nose contact component disconnected from the mist outlet.

[0012] The flap is configured to cover the air vent of the mist reservoir when exhaling, and the edge region of the bidirectional valve is bent toward the slope so that the exhaust port of the mouth and nose contact component is connected to the mist outlet.

[0013] In some embodiments, a plurality of first positioning posts are provided at the edge of the planar area of ​​the end face of the boss structure, and a plurality of positioning holes are provided at the edge area of ​​the bidirectional valve plate, with the positioning holes of the bidirectional valve plate correspondingly fitted onto the first positioning posts.

[0014] In some embodiments, the boundary line between the slope of the boss structure and the planar area is a straight line segment, and a perpendicular line is drawn from the center of the end face of the boss structure to the boundary line, with the intersection point located at the midpoint of the boundary line.

[0015] In some embodiments, the distance from the geometric center of the planar region of the end face of the boss structure to the boundary line is greater than or equal to 3 cm.

[0016] In some embodiments, the mouth and nose contact component is detachably fixed to the first end of the mist storage cylinder by a plug-in method. An axially extending positioning protrusion is provided on the outer peripheral surface of the boss structure, and an axially extending positioning groove is provided on the inner peripheral surface of the mouth and nose contact component. One end of the positioning groove extends to the end face of the mouth and nose contact component facing the mist storage cylinder. The positioning protrusion is configured to be able to be inserted into the positioning groove.

[0017] The inner diameter of the part of the mouth and nose contact component that contacts the mist storage cylinder is slightly smaller than the outer diameter of the boss structure of the mist storage cylinder. The mouth and nose contact component and the mist storage cylinder are fixedly connected by static friction between the two.

[0018] This ensures that the exhaust port and the slope are radially opposite to each other.

[0019] In some embodiments, the aerosol delivery device further includes two push buttons and two elastic elements;

[0020] The connector is configured to be detachably inserted into the inner side of the second end of the mist storage cylinder via the two push buttons;

[0021] Two limiting strips are provided on the inner circumferential surface of the second end of the mist storage cylinder, and the two limiting strips are provided in a one-to-one correspondence with the push button. The limiting strips extend along the circumference of the mist storage cylinder.

[0022] The push button has a first latch, a second latch and a third latch. The first latch and the second latch are opposite each other along the circumference of the mist storage cylinder. The first latch and the second latch extend radially inward along the mist storage cylinder. The free end of the third latch points to the first end of the mist storage cylinder.

[0023] A portion of the outer peripheral surface of the connector is recessed inward to form two opposing recessed sections. Positioning through holes for the first and second latches to pass through are provided on the recessed sections. The elastic element is provided in a one-to-one correspondence with the recessed sections, and the two ends of the elastic element are in contact with the recessed sections and the push button, respectively.

[0024] The elastic element is configured such that when the push button is not pressed by the user, the free end of the third buckle engages with the limiting strip;

[0025] The elastic element is configured to undergo elastic deformation when the push button is pressed and moves inward, and the third latch is configured to separate from the limiting strip when the push button is pressed and moves inward, so that the connector can move axially and separate from the mist storage cylinder.

[0026] In some embodiments, the elastic element is a spring; a second positioning post is provided on the surface of the push button facing the concave section, and the spring is sleeved on the second positioning post.

[0027] In some embodiments, the connector includes a rigid portion and a flexible rubber ring, the opening of which has a major axis and a minor axis perpendicular to each other, and each part of the planar shape of the opening of the flexible rubber ring is outwardly convex, and each part of the planar shape of the opening of the flexible rubber ring is capable of calculating a left derivative and a right derivative.

[0028] The connector also includes a reinforcing piece integral with the soft rubber ring, the reinforcing piece being disposed at the long axis end of the soft rubber ring and parallel to the plane where the opening of the soft rubber ring is located;

[0029] The soft rubber ring and the reinforcing sheet are configured to be elastically deformable to match the outlet of pressure-type metered aerosol devices of various sizes and shapes.

[0030] In some embodiments, the opening of the soft rubber ring is elliptical, and the side surface of the reinforcing sheet facing the opposite side of the reinforcing sheet is concave.

[0031] In some embodiments, the rigid portion has soft rubber mounting holes, and the outer surface of the soft rubber ring has protrusions that correspond one-to-one with the soft rubber mounting holes.

[0032] The dual-directional valve plate, the ventilation holes and slopes on the boss structure at the first end of the mist storage cylinder, and the mist outlet and exhaust port on the mouth and nose contact parts work together to facilitate exhalation and exhalation for the user. Since the same dual-directional valve plate acts as an on / off switch during both exhalation and inhalation, the product structure is simple and compact, reducing costs. Attached Figure Description

[0033] Figure 1 This is a perspective view of the aerosol drug delivery device of this utility model.

[0034] Figure 2 This is an exploded view of the aerosol drug delivery device of this utility model.

[0035] Figure 3 This is a perspective view of the bidirectional valve plate in the aerosol drug delivery device of this utility model.

[0036] Figure 4 This is a partial perspective view of the mist storage cylinder in the aerosol drug delivery device of this utility model.

[0037] Figure 5 and Figure 6 These are perspective views of the nozzle in the aerosol delivery device of this utility model from different angles.

[0038] Figure 7This is a partial perspective view of the mist storage cylinder in the aerosol drug delivery device of this utility model.

[0039] Figure 8 This is a partial perspective view of the connector in the aerosol drug delivery device of this utility model, showing the rigid part of the connector and omitting the soft rubber ring.

[0040] Figure 9 These are perspective views of the push button in the aerosol drug delivery device of this utility model from two different angles.

[0041] Figure 10 This is a perspective view of the combination of the push button and connector in the aerosol drug delivery device of this utility model.

[0042] Figure 11 This is a perspective view of the mouth and nose contact component in the form of a face mask according to this utility model.

[0043] Figure 12 This is a top view of a portion of the structure of the aerosol drug delivery device of this utility model, that is, a frontal projection view of a portion of the structure on the plane where the bidirectional valve plate is located.

[0044] The attached figures are labeled as follows: 1. Suction nozzle; 11. Mouthpiece; 12. Exhaust port; 13. Positioning groove; 14. Limiting structure;

[0045] 2. Mist storage cylinder body; 21. Central groove; 22. Vent hole; 23. First positioning post; 24. Slope; 25. Positioning protrusion; 26. Limiting strip;

[0046] 3. Connector; 31. Positioning tube; 32. Positioning through hole; 33. Soft rubber mounting hole; 34. Soft rubber ring; 35. Reinforcing plate; 36. Rigid part;

[0047] 4. Push button; 41. First latch; 42. Second latch; 43. Third latch; 44. Second positioning post;

[0048] 5. Two-way valve plate; 51. Positioning hole; 52. Disc; 53. Central empty area; 54. Strip-shaped empty area;

[0049] 6. Spring. Detailed Implementation

[0050] The present invention will be further described below with reference to specific embodiments, but the scope of protection of the present invention is not limited thereto.

[0051] The aerosol drug delivery device of this invention includes a mouth and nose contact component, a two-way valve plate, a mist storage cylinder, and a connector.

[0052] The mouth and nose contact component is connected to the first end of the mist reservoir body, and is used to receive aerosol from the mist reservoir body and deliver it to the user's mouth or nose. Exhaled air from the user can be discharged to the outside of the aerosol delivery device through the mouth and nose contact component. The mouth and nose contact component can be a mouthpiece or a breathing mask. The mouth and nose contact component can be detachably or inseparably fixed to the first end of the mist reservoir body.

[0053] The two-way valve plate is installed on the end face of the first end of the mist storage cylinder.

[0054] The connector is detachably or inseparably fixed to the second end of the mist reservoir body, for receiving atomized drugs from a pressure-type metered aerosol device and transferring the atomized drugs to the mist reservoir body.

[0055] The following is a detailed description.

[0056] Two-way valve plate

[0057] The bidirectional valve disc is an elastic element. The central area of ​​the bidirectional valve disc is empty, forming a central void area. An even number of strip-shaped void areas extend outwards from the central void area, with the endpoints of these strip-shaped void areas located inside the bidirectional valve disc. A flap is positioned between adjacent strip-shaped void areas. Positioning holes are provided near the circumferential boundary of half of the flaps, and flaps with positioning holes and flaps without positioning holes are alternately arranged circumferentially.

[0058] For example, the central empty area can be circular in shape, with a diameter larger than the width of the strip-shaped empty area.

[0059] For example, two perpendicularly intersecting strip-shaped gaps form four lobes. In this case, the central gap is equivalent to the overlapping area of ​​the two strip-shaped gaps, meaning the central gap is rectangular in shape.

[0060] In some implementations, the number of lobes is 4, 6, or 8.

[0061] In some implementations, the central angles of each lobe are equal.

[0062] In other embodiments, the central angles of the petals with positioning holes are equal, the central angles of the petals without positioning holes are equal, and the central angles of the petals with positioning holes are not equal to those of the petals without positioning holes.

[0063] mist storage cylinder

[0064] The first end of the mist storage cylinder has a boss structure. Multiple edge areas of the end face of the boss structure are slopes. The slopes are inclined radially away from the center of the end face towards the second end of the mist storage cylinder. The remaining area of ​​the end face of the boss structure is a flat area. Along the circumference of the boss structure, the edge areas of the end face of the boss structure alternate between slopes and flat surfaces. Multiple vent holes are provided on the flat area of ​​the end face of the boss structure.

[0065] The bidirectional valve plate is fixed on the flat area of ​​the end face of the boss structure and is opposite to the slope along the length of the mist storage cylinder. Multiple petals are provided in the middle of the bidirectional valve plate, which cover all the vent holes, and some petals are opposite to the slope along the length of the mist storage cylinder.

[0066] In some implementations, the boundary line between the slope of the boss structure and the plane is a straight line segment. A perpendicular line is drawn from the center of the end face of the boss structure to the boundary line, and the intersection point is located at the midpoint of the boundary line. The boundary between the slope of the boss structure and the plane area can be rounded, and the boundary area still extends along a straight line. In this case, the boundary line can be considered as the boundary between the rounded area and the plane area.

[0067] In some other embodiments, the boundary between the slope of the boss structure and the plane is a curve.

[0068] In contrast, when the boundary line is a straight line segment, the two valve plates fit together more tightly when they bend towards the slope.

[0069] Preferably, the distance from the geometric center of the planar area of ​​the end face of the boss structure to the boundary line is greater than or equal to 3 cm. If this distance is too small, the size of the vent will be limited, making inhalation difficult. Of course, this size should not be too large either, otherwise the slope area will be too small, making exhalation difficult.

[0070] In some embodiments, multiple first positioning posts are provided at the edge of the planar area of ​​the end face of the boss structure, and multiple positioning holes are provided at the edge area of ​​the bidirectional valve plate, with the positioning holes of the bidirectional valve plate correspondingly fitted onto the first positioning posts.

[0071] The method of fixing the bidirectional valve plate and the boss structure is not limited to this. For example, the two can be fixed by adhesive or by pins.

[0072] In some embodiments, the boss structure is a thin-shell structure. In other embodiments, the boss structure is a solid structure.

[0073] In some embodiments, the planar area of ​​the boss structure, excluding the first positioning post and the vent hole, is a continuous plane.

[0074] In some other embodiments, a central groove is provided at the center of the planar region of the boss structure. The central groove makes it easier for the lobes to lift up.

[0075] Mouth and nose contact parts

[0076] The mouth and nose contact component is sleeved on the boss structure. The mouth and nose contact component is provided with multiple limiting structures. The limiting structures abut against the edge area of ​​the bidirectional valve plate to limit the extreme position of the edge area of ​​the bidirectional valve plate tilting up in the direction from the second end of the mist storage cylinder to the first end.

[0077] The mouth and nose contact component has an exhaust port in the area that is radially opposite to the slope. When the bidirectional valve plate is in a flat state, the bidirectional valve plate is in airtight contact with the inner circumferential surface of the mouth and nose contact component.

[0078] During inhalation, the flaps rise to connect the mist storage cylinder with the mist outlet of the mouth and nose contact component, while the limiting structure keeps the exhaust port of the mouth and nose contact component disconnected from the mist outlet.

[0079] During exhalation, the flap covers the vent of the mist reservoir, and the edge of the flap of the two-way valve bends toward the slope so that the exhaust port of the mouth and nose contact component is connected to the mist outlet.

[0080] In some embodiments, a limiting structure is disposed on the inner surface of the mouth and nose contact component. When the bidirectional valve plate is in a flat state, the limiting structure abuts against the surface of the bidirectional valve plate facing away from the mist storage cylinder. In this way, the edge area of ​​the bidirectional valve plate can only bend towards the side of the mist storage cylinder.

[0081] The limiting structure can be a flat plate or a U-shaped plate.

[0082] In other embodiments, the limiting structure is achieved by the upper boundary of the exhaust port, with the bidirectional valve plate extending out of the exhaust port. When the bidirectional valve plate is in a flat state, it abuts against the upper boundary of the exhaust port. Thus, the upper boundary of the exhaust port limits the warping of the bidirectional valve plate. The boundary region of the bidirectional valve plate, except for the area corresponding to the exhaust port, is in sealing contact with the inner circumferential surface of the mouth and nose contact component. The bidirectional valve plate protrudes outward from the exhaust port at the area corresponding to the exhaust port.

[0083] In some embodiments, the mouth and nose contact component is detachably fixed to the first end of the mist storage cylinder by a plug-in method. An axially extending positioning protrusion is provided on the outer peripheral surface of the boss structure, and an axially extending positioning groove is provided on the inner peripheral surface of the mouth and nose contact component. One end of the positioning groove extends to the end face of the mouth and nose contact component facing the mist storage cylinder. The positioning protrusion is configured to be able to be inserted into the positioning groove.

[0084] In some embodiments, the aerosol delivery device also includes two push buttons and two elastic elements;

[0085] The connector is detachably inserted into the inner side of the second end of the mist storage cylinder via two push buttons;

[0086] Two limiting strips are provided on the inner circumferential surface of the second end of the mist storage cylinder. The two limiting strips are provided in a one-to-one correspondence with the push button. The limiting strips extend along the circumference of the mist storage cylinder.

[0087] The push button has a first latch, a second latch and a third latch. The first latch and the second latch are opposite each other along the circumference of the mist storage cylinder. The first latch and the second latch extend inward in the radial direction of the mist storage cylinder. The free end of the third latch points to the first end of the mist storage cylinder.

[0088] A section of the outer peripheral surface of the connector is recessed inward to form two opposing recessed sections. Positioning through holes for the first and second latches to pass through are provided on the recessed sections. The elastic element is provided in a one-to-one correspondence with the recessed sections, and the two ends of the elastic element are in contact with the recessed section and the push button, respectively.

[0089] When the push button is not pressed by the user, the elastic element keeps the free end of the third buckle engaged with the limit strip;

[0090] When the push button is pressed and moves inward, the elastic element deforms elastically, and the third latch separates from the limit strip, so that the connector can move axially and separate from the mist storage cylinder.

[0091] In some embodiments, the elastic element is a spring, and a second positioning post is provided on the surface of the push button facing the concave section, with the spring sleeved on the second positioning post.

[0092] In other embodiments, the elastic element is a metal spring. The metal spring is, for example, U-shaped.

[0093] In some embodiments, the connector includes a rigid portion and a flexible rubber ring, the opening of which has a major axis and a minor axis perpendicular to each other, and every part of the planar shape of the opening of the flexible rubber ring is outwardly convex, and the left derivative and right derivative can be calculated at every part of the planar shape of the opening of the flexible rubber ring.

[0094] The connector also includes a reinforcing plate that is integral with the soft rubber ring. The reinforcing plate is located at the long axis end of the soft rubber ring and is parallel to the plane where the opening of the soft rubber ring is located.

[0095] The soft rubber ring and reinforcing sheet are designed to be elastically deformable to match the outlet of pressure metering aerosol devices of various sizes and shapes.

[0096] This design allows it to be compatible with the outlets of various pressure aerosol devices on the market, including round, oval, and square openings. The opening structure of the soft rubber ring can accommodate aerosol devices of different shapes as much as possible, while the flat surfaces on both sides act as reinforcing ribs and seals, providing tensile strength to make the aerosol device more secure.

[0097] In some embodiments, the opening of the soft rubber ring is elliptical, and the side surface of the reinforcing sheet facing the opposite side of the reinforcing sheet is concave.

[0098] In some other embodiments, the opening shape of the soft rubber ring is formed by splicing two symmetrical arc shapes, each arc having a central angle of less than 180°, and the two arcs having equal radii and equal central angles.

[0099] In other embodiments, the side surface of the reinforcing sheet facing the opposite reinforcing sheet is a plane, which is perpendicular to the aforementioned major axis.

[0100] In some embodiments, soft rubber mounting holes are formed in the rigid part, and the outer surface of the soft rubber ring is provided with protrusions that correspond one-to-one with the soft rubber mounting holes.

[0101] In some other embodiments, the connector is attached to the mist reservoir body, and the soft rubber ring is replaceable.

[0102] In some other embodiments, the mouth and nose contact component is attached to the first end of the mist storage cylinder.

[0103] Example 1

[0104] refer to Figures 1 to 10 Example 1 provides an aerosol drug delivery device, including: a mouthpiece 1 (as a mouth and nose contact component), a two-way valve plate 5, a mist storage cylinder 2, a connector 3, two springs 6 (as elastic elements) and two push buttons 4.

[0105] refer to Figure 3 The bidirectional valve plate 5 is a circular sheet made of an elastic material. Specifically, the bidirectional valve plate 5 is made of silicone, which can be colored and opaque.

[0106] The central area of ​​the bidirectional valve plate 5 is empty, forming a central empty area 53. Four strip-shaped empty areas 54 extend radially outward from the central empty area 53, with the endpoints of the four strip-shaped empty areas 54 located inside the bidirectional valve plate 5. A flap 52 is provided between adjacent strip-shaped empty areas 54; therefore, the bidirectional valve plate 5 has multiple flaps 52 (specifically four flaps 52). The included angles between adjacent strip-shaped empty areas 54 are equal. A positioning hole 51 is provided near the circumferential boundary area of ​​each pair of opposing flaps 52.

[0107] refer to Figure 4The first end of the mist storage cylinder 2 has a boss structure, and the two edge areas of the end face of the boss structure are slopes 24. The slopes 24 are inclined radially away from the center of the end face and toward the second end of the mist storage cylinder 2. With the first end of the mist storage cylinder 2 at the top and the second end at the bottom as a reference, the slopes 24 are inclined downward in a direction from the inside to the outside.

[0108] The remaining area of ​​the end face of the boss structure is a planar area. Along the circumference of the boss structure, slopes 24 and planar areas are alternately arranged on the edge area of ​​the end face of the boss structure. Eight ventilation holes 22 are provided on the planar area of ​​the end face of the boss structure.

[0109] refer to Figure 2 The bidirectional valve plate 5 is fixed on the flat area of ​​the end face of the boss structure and is opposite to the slope 24 along the length of the mist storage cylinder 2. Multiple petals 52 formed in the middle of the bidirectional valve plate 5 cover all the vent holes 22, and some of the petals 52 are opposite to the slope 24 along the length of the mist storage cylinder 2.

[0110] Specifically, with the first end of the mist storage cylinder 2 at the top and the second end at the bottom as a reference, the two lobes 52 and the two slopes 24 are aligned vertically and vertically.

[0111] refer to Figure 2 , Figure 4 , Figure 5 and Figure 6 The suction nozzle 1 is mounted on the boss structure, and multiple limiting structures 14 are formed on the suction nozzle 1. The limiting structures 14 abut against the edge area of ​​the bidirectional valve plate 5 to limit the extreme position of the edge area of ​​the bidirectional valve plate 5 tilting up in the direction from the second end of the mist storage cylinder 2 to the first end.

[0112] The suction nozzle 1 has an exhaust port 12 in the area that is radially opposite to the slope 24. When the bidirectional valve plate 5 is in a flat state, the bidirectional valve plate 5 is in airtight contact with the inner circumferential surface of the suction nozzle 1.

[0113] During the inhalation state, the flap 52 is raised so that the mist storage cylinder 2 communicates with the mist outlet (i.e., the opening of the mouthpiece 11) of the mouthpiece 1, and the limiting structure 14 keeps the exhaust port 12 of the mouthpiece 1 disconnected from the mist outlet.

[0114] During exhalation, the flap 52 covers the vent 22 of the mist storage cylinder 2, and the edge area of ​​the bidirectional flap 52 bends toward the slope 24 so that the exhaust port 12 of the mouthpiece 1 is connected to the mist outlet.

[0115] refer to Figure 3 , Figure 4 and Figure 5The dihedral angle between the slope 24 and the planar area of ​​the end face of the boss structure must be greater than 90° and less than 180°, preferably greater than or equal to 135° and less than or equal to 150°. If the dihedral angle is too large, the downward space of the bidirectional valve plate 5 will be insufficient, resulting in a small gas passage and high exhalation resistance during exhalation. If the dihedral angle is too small, the height of the boss structure will be required to be high, leading to an excessively large product size.

[0116] refer to Figure 4 The boundary line between the slope 24 of the boss structure and the planar area is a line segment. A perpendicular line is drawn from the center of the end face of the boss structure to the boundary line, and the intersection point is located at the midpoint of the boundary line. The two endpoints of this line segment are located at the boundary of the end face of the boss structure.

[0117] When the bidirectional valve plate 5 bends toward the slope 24, the bidirectional valve plate 5 is attached to the slope 24.

[0118] The distance from the center of the end face of the boss structure to the boundary line is 8cm.

[0119] refer to Figure 12 The vertical distance b from the geometric center of the planar region of the end face of the boss structure to the boundary line between the planar region of the end face of the boss structure and the slope 24 is 8cm. The preferred value of the distance b is greater than or equal to 3cm.

[0120] Continue to refer to Figure 12 The boundary line between the slope 24 of the boss structure and the plane area of ​​the end face of the boss structure is projected onto the plane where the bidirectional valve plate 5 is located. The distance from the free end of the strip-shaped void area of ​​the bidirectional valve plate 5 (the end far from the center area of ​​the bidirectional valve plate 5) to this projection is denoted as a, and the distance a is 1.5cm.

[0121] If the distance 'a' is too small, the two-way valve plate 5 will easily sag due to gravity. If the distance 'a' is too large, the two-way valve plate 5 will be difficult to bend, resulting in excessive expiratory resistance. The optimal range for the distance 'a' is 1.5cm ≤ a ≤ 10cm.

[0122] Combination Figure 2 , Figure 3 and Figure 4 Two first positioning posts 23 are set at the edge of the planar area of ​​the end face of the boss structure, and the positioning holes 51 of the bidirectional valve plate 5 are fitted onto the first positioning posts 23 in a corresponding manner.

[0123] The direction of the line connecting the centers of the two first positioning posts 23 is the radial direction of the boss structure.

[0124] The boss structure is a thin-shell structure. The internal space of the boss structure is part of the internal space of the mist storage cylinder 2.

[0125] A central groove 21 is provided at the center of the planar area of ​​the end face of the boss structure. The central groove 21 makes it easier for the flap 52 to tilt upwards. When the user is not breathing, the free end of the flap 52 of the bidirectional valve 5 covers the partial opening area of ​​the central groove 21.

[0126] refer to Figure 6 The limiting structure 14 is set on the inner surface of the nozzle 1. When the bidirectional valve plate 5 is in a flat state, the limiting structure 14 abuts against the surface of the bidirectional valve plate 5 facing away from the mist storage cylinder 2. In this way, the edge area of ​​the bidirectional valve plate 5 can only bend towards the side of the mist storage cylinder 2.

[0127] One part of the limiting structure 14 is a planar plate, and the other part of the limiting structure 14 is a U-shaped plate. (Reference) Figure 6 The flat plate-shaped limiting structure 14 is perpendicular to the inner circumferential surface of the suction nozzle 1 and parallel to the radial direction of the suction nozzle 1. The opening of the U-shaped plate-shaped limiting structure 14 faces the inner circumferential surface of the suction nozzle 1 and extends in the axial direction of the suction nozzle 1. Combined with... Figure 2 and Figure 4 When the bidirectional valve plate 5 is in a flat state, the end face of the limiting structure 14 facing the side of the mist storage cylinder 2 contacts the bidirectional valve plate 5.

[0128] refer to Figure 2 , Figure 4 and Figure 6 The nozzle 1 is detachably fixed to the first end of the mist storage cylinder 2 by means of insertion and removal. An axially extending positioning protrusion 25 is provided on the outer peripheral surface of the boss structure, and an axially extending positioning groove 13 is provided on the inner peripheral surface of the nozzle 1. One end of the positioning groove 13 extends to the end face of the nozzle 1 facing the mist storage cylinder 2, and the positioning protrusion 25 is inserted into the positioning groove 13.

[0129] When assembling the nozzle 1 and the mist storage cylinder 2, align the positioning groove 13 on the nozzle 1 with the positioning protrusion 25 on the mist storage cylinder 2, and fasten the nozzle 1 to the mist storage cylinder 2 along the trajectory defined by the positioning protrusion 25.

[0130] refer to Figure 2 , Figure 7 , Figure 8 and Figure 9 The connector 3 is detachably inserted into the inner side of the second end of the mist storage cylinder 2 via two push buttons 4.

[0131] Two limiting strips 26 are provided on the inner circumferential surface of the second end of the mist storage cylinder 2. The two limiting strips 26 are provided in a one-to-one correspondence with the push button 4. The limiting strips 26 extend along the circumference of the mist storage cylinder 2.

[0132] The push button 4 has a first latch 41, a second latch 42 and a third latch 43. The first latch 41 and the second latch 42 are opposite each other along the circumference of the mist storage cylinder 2. The first latch 41 and the second latch 42 extend radially inward along the mist storage cylinder 2. The free end of the third latch 43 points to the first end of the mist storage cylinder 2.

[0133] A section of the outer peripheral surface of connector 3 is recessed inward to form two opposing recessed sections. Positioning through holes 32 are provided on the recessed sections for the first latch 41 and the second latch 42 to pass through. Springs 6 are provided in a one-to-one correspondence with the recessed sections, and the two ends of springs 6 are in contact with the recessed sections and the push button 4, respectively.

[0134] When the push button 4 is not pressed by the user, the spring 6 keeps the free end of the third buckle 43 locked in the limit bar 26;

[0135] When the push button 4 is pressed and moves inward, the spring 6 deforms elastically, and the third buckle 43 separates from the limit bar 26, so that the connector 3 can move axially and separate from the mist storage cylinder 2.

[0136] The axial position of the limiting strip 26 can be flexibly designed to cooperate with the third buckle 43.

[0137] A second positioning post 44 is provided on the surface of the push button 4 facing the concave section, and the spring 6 is sleeved on the second positioning post 44.

[0138] refer to Figure 8 and Figure 10 The connector 3 includes a rigid portion 36 and a soft rubber ring 34. The opening of the soft rubber ring 34 has a major axis and a minor axis that are perpendicular to each other, and the opening shape of the soft rubber ring 34 is elliptical.

[0139] The connector 3 also includes a reinforcing piece 35 integrally formed with the soft rubber ring 34. The reinforcing piece 35 is disposed at the end of the long axis of the soft rubber ring 34 and is parallel to the plane where the opening of the soft rubber ring 34 is located.

[0140] The soft rubber ring 34 and the reinforcing sheet 35 are capable of elastic deformation to match the outlet of pressure metering aerosol devices of various sizes and shapes.

[0141] This design allows for compatibility with the outlets of various pressure-type aerosol devices on the market, including round, oval, and square openings. The opening structure of the soft rubber ring 34 can accommodate aerosol devices of different shapes as much as possible, while the flat structures on both sides (i.e., reinforcing plates 35) can act as reinforcing ribs and seals, providing tension to make the connection between the aerosol delivery device and the pressure-type metering aerosol device more secure and airtight.

[0142] Specifically, the side surface of the reinforcing piece 35 facing the opposite side is a concave surface. This concave surface is an arc-shaped surface.

[0143] refer to Figure 8 The rigid part 36 has soft rubber mounting holes 33, and the outer surface of the soft rubber ring 34 has protrusions (not shown) that correspond one-to-one with the soft rubber mounting holes 33. The protrusions on the soft rubber ring 34 are pressed into the soft rubber mounting holes 33 to achieve a fixed connection between the soft rubber ring 34 and the rigid part 36.

[0144] In this embodiment, the nozzle 1 and the mist storage cylinder 2 are made of colorless transparent polypropylene (PP), the rigid part 36 of the connector 3 is made of ABS plastic, the soft rubber ring 34 is made of thermoplastic rubber, the spring 6 is made of SUS304 stainless steel, and the push button 4 is made of ABS plastic.

[0145] Users can observe the deformation of the two-way valve 5 during exhalation and inhalation through the mouthpiece 1 and the mist reservoir 2. Furthermore, users can visually observe whether the aerosol is effectively delivered to their mouth and nose.

[0146] Example 2

[0147] Except for the following differences, this embodiment is the same as Embodiment 1:

[0148] The central area of ​​the bidirectional valve plate 5 is empty, forming a central empty area 53. Four strip-shaped empty areas 54 extend radially outward from the central empty area 53, with the endpoints of the four strip-shaped empty areas 54 located inside the bidirectional valve plate 5. A leaf 52 is provided between adjacent strip-shaped empty areas 54, resulting in a total of four leaf 52 across the four strip-shaped empty areas 54. The central angles of any two opposing leaf 52s are equal, with one pair of leaf 52 having a larger central angle than the other pair. A positioning hole 51 is provided near the circumferential boundary area of ​​either the pair of leaf 52 with the larger central angle or the pair of leaf 52 with the smaller central angle.

[0149] This allows you to adjust the resistance during exhalation and inhalation.

[0150] Example 3

[0151] Except for the following differences, this embodiment is the same as Embodiment 1:

[0152] The surface of the reinforcing piece 35 facing the opposite side of the reinforcing piece 35 is flat.

[0153] Example 4

[0154] Except for the following differences, this embodiment is the same as Embodiment 1:

[0155] refer to Figure 11The mouthpiece 11 is changed from a cylindrical shape to a mask shape, thereby covering the user's mouth and nose.

[0156] Example 5

[0157] Except for the following differences, this embodiment is the same as Embodiment 1:

[0158] The connector 3 is threadedly connected to the mist storage cylinder 2.

[0159] This utility model is not limited to the above-described embodiments. Any modifications, improvements, or substitutions that can be conceived by those skilled in the art without departing from the essential content of this utility model fall within the scope of this utility model.

Claims

1. An aerosol drug delivery device, characterized in that, include: The device includes a mouth and nose contact component, a mist storage cylinder, a connector, and a two-way valve plate. The mouth and nose contact component is fixed to the first end of the mist storage cylinder and has an aerosol outlet and an exhaust port. The mouth and nose contact component is used to deliver the aerosol in the mist storage cylinder to the user's mouth or nasal cavity. The connector is fixed to the second end of the mist storage cylinder and is used to connect to a pressure-type metered aerosol device. The first end of the mist storage cylinder has a boss structure, and multiple edge areas of the end face of the boss structure are slopes. The slopes are inclined radially away from the center of the end face towards the second end of the mist storage cylinder. The remaining area of ​​the end face of the boss structure is a planar area. Slopes and planar areas are alternately arranged along the circumference of the edge area of ​​the end face of the boss structure. Multiple vent holes are provided on the planar area of ​​the end face of the boss structure. The bidirectional valve plate is fixed on the planar area of ​​the end face of the boss structure and is opposite to the slope along the length of the mist storage cylinder. Multiple petals are formed in the middle of the bidirectional valve plate. The multiple petals are configured to cover all the vent holes, and some petals are opposite to the slope along the length of the mist storage cylinder. The mouth and nose contact component is sleeved on the boss structure, and multiple limiting structures are formed on the mouth and nose contact component. The limiting structures abut against the edge area of ​​the bidirectional valve plate to limit the extreme position of the edge area of ​​the bidirectional valve plate tilting up along the direction from the second end of the mist storage cylinder to the first end. The mouth and nose contact component has an exhaust port in the area that is radially opposite to the slope. When the bidirectional valve plate is in a flat state, the bidirectional valve plate is in airtight contact with the inner circumferential surface of the mouth and nose contact component. The flap is configured to tilt upwards during inhalation so that the mist storage cylinder communicates with the mist outlet of the mouth and nose contact component, and the limiting structure keeps the exhaust port of the mouth and nose contact component disconnected from the mist outlet. The flap is configured to cover the air vent of the mist reservoir when exhaling, and the edge region of the bidirectional valve is bent toward the slope so that the exhaust port of the mouth and nose contact component is connected to the mist outlet.

2. The aerosol drug delivery device according to claim 1, characterized in that, Multiple first positioning posts are provided at the edge of the planar area of ​​the end face of the boss structure, and multiple positioning holes are provided at the edge area of ​​the bidirectional valve plate. The positioning holes of the bidirectional valve plate are fitted onto the first positioning posts one by one.

3. The aerosol drug delivery device according to claim 1, characterized in that, The boundary line between the slope of the boss structure and the planar area is a straight line segment; a perpendicular line is drawn from the center of the end face of the boss structure to the boundary line, and the intersection point is located at the midpoint of the boundary line.

4. The aerosol drug delivery device according to claim 3, characterized in that, The distance from the geometric center of the planar region of the end face of the boss structure to the boundary line is greater than or equal to 3cm.

5. The aerosol drug delivery device according to claim 1, characterized in that, The mouth and nose contact component is configured to be detachably fixed to the first end of the mist storage cylinder by means of insertion and removal. An axially extending positioning protrusion is provided on the outer peripheral surface of the boss structure, and an axially extending positioning groove is provided on the inner peripheral surface of the mouth and nose contact component. One end of the positioning groove extends to the end face of the mouth and nose contact component facing the mist storage cylinder. The positioning protrusion is configured to be able to be inserted into the positioning groove.

6. The aerosol drug delivery device according to claim 1, characterized in that, It also includes two push buttons and two elastic elements; The connector is configured to be detachably inserted into the inner side of the second end of the mist storage cylinder via the two push buttons; Two limiting strips are provided on the inner circumferential surface of the second end of the mist storage cylinder, and the two limiting strips are provided in a one-to-one correspondence with the push button. The limiting strips extend along the circumference of the mist storage cylinder. The push button has a first latch, a second latch and a third latch. The first latch and the second latch are opposite each other along the circumference of the mist storage cylinder. The first latch and the second latch extend radially inward along the mist storage cylinder. The free end of the third latch points to the first end of the mist storage cylinder. A portion of the outer peripheral surface of the connector is recessed inward to form two opposing recessed sections. Positioning through holes are provided on the recessed sections for the first and second latches to pass through. The elastic element is provided in a one-to-one correspondence with the recessed sections, and the two ends of the elastic element are in contact with the recessed sections and the push button, respectively. The elastic element is configured such that when the push button is not pressed by the user, the free end of the third buckle engages with the limiting strip; The elastic element is configured to undergo elastic deformation when the push button is pressed and moves inward, and the third latch is configured to separate from the limiting strip when the push button is pressed and moves inward, so that the connector can move axially and separate from the mist storage cylinder.

7. The aerosol drug delivery device according to claim 6, characterized in that, The elastic element is a spring, and a second positioning post is provided on the surface of the push button facing the concave section, with the spring sleeved on the second positioning post.

8. The aerosol drug delivery device according to claim 1, characterized in that, The connector includes a rigid portion and a soft rubber ring. The opening of the soft rubber ring has a major axis and a minor axis that are perpendicular to each other. Every part of the planar shape of the opening of the soft rubber ring is outwardly convex, and the left derivative and right derivative can be calculated at every part of the planar shape of the opening of the soft rubber ring. The connector also includes a reinforcing piece integral with the soft rubber ring, the reinforcing piece being disposed at the long axis end of the soft rubber ring and parallel to the plane where the opening of the soft rubber ring is located; The soft rubber ring and the reinforcing sheet are configured to be elastically deformable to match the outlet of pressure-type metered aerosol devices of various sizes and shapes.

9. The aerosol drug delivery device according to claim 8, characterized in that, The opening of the soft rubber ring is elliptical, and the side surface of the reinforcing sheet facing the opposite side is concave.

10. The aerosol drug delivery device according to claim 8, characterized in that, The rigid part has holes for mounting soft rubber, and the outer surface of the soft rubber ring has protrusions that correspond one-to-one with the holes for mounting soft rubber.

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