Lateral pressure nasal drug delivery device

Abstract

The utility model relates to a side pressure type nasal cavity medicine delivery device, and belongs to the field of nasal cavity medicine delivery devices. Comprising a nozzle assembly, a side pressure pump assembly, a liquid storage assembly and a shell assembly. Wherein a quantitative chamber in a pump body in the side pressure pump assembly and a spring component are arranged in the horizontal direction, so that the lateral pressing action of a patient on the device directly acts on the side pressure pump assembly, the transmission process is accurate and rapid, and the use feeling of the patient is improved; and the liquid storage assembly can be conveniently filled and sealed in the production process.

Description

Technical Field

[0001] The utility model relates to a nasal drug delivery device, in particular to a nasal drug delivery device that uses lateral pressing to complete braking and drug delivery. Background Art

[0002] Compared with the linear pressing type nasal drug delivery device, the side pressing braking type nasal drug delivery device is more convenient and easier to operate, avoiding the possibility that the whole device moves upward synchronously with the force application direction when the patient presses and uses it, and improving the comfort of the device during use.

[0003] However, for the existing side pressing type nasal drug delivery devices on the market, their pump body structures are similar to those in the linear pressing type nasal drug delivery devices. Actually, a transmission structure is used to convert the horizontal lateral pressing action into a vertical squeezing action on the internal pump body and the liquid storage bottle. More commonly, the internal liquid storage bottle is actually lifted as a whole through the transmission structure, and the upward movement positions of the pump body and the liquid storage bottle are restricted by the shell structure to complete the action of squeezing the pump body structure. This method makes it slower in transmission efficiency when laterally pressing the nasal drug delivery device because the force is not directly applied to the pump body structure, and the atomization effect is more easily affected by the pressing force and speed. Moreover, when pressing, a force that can lift the whole liquid storage bottle needs to be applied, and the pressing of the whole device is more laborious.

[0004] At the same time, in the prior art, after the pump structure and the liquid storage bottle are assembled, the pump structure is encapsulated on the liquid storage bottle. When encapsulating, the cooperation between the pump structure and the liquid storage bottle mouth also needs to be considered, and the encapsulation process is difficult and complex. Summary of the Utility Model

[0005] The main purpose of the utility model is: aiming at the above problems, to provide a side pressing type nasal drug delivery device with an internal side pressure pump and convenient encapsulation of the liquid storage component.

[0006] A side pressing type nasal drug delivery device includes a nozzle assembly, a side pressure pump assembly, a liquid storage assembly, and a housing assembly, wherein:

[0007] The nozzle assembly includes a nozzle shell and a nozzle inner core; the side pressure pump assembly includes a pump body, a spring, a piston push rod, and a piston cover, and a circular hole is hollowed out on the piston cover; the liquid storage assembly includes a bottle cap, a seal, a pump body joint, a bottle body gasket, an extension tube, and a liquid storage bottle. A circular hole is hollowed out on the top of the bottle cap. The seal is arranged between the bottle cap and the pump body joint, and the bottle body gasket is arranged between the pump body joint and the liquid storage bottle; the housing assembly includes a housing, a push button, and a nozzle cover.

[0008] Furthermore, the bottle cap is used as a sealing member to complete the sealing of the liquid storage assembly, and the liquid storage assembly and the side pressure pump assembly are independent of each other.

[0009] Further, an opening is provided at the central position of the seal, and the opening enables flexible deformation at the central position of the seal. The side pressure pump assembly is buckled and connected to the pump body joint through the opening position.

[0010] Preferably, the opening is cut into a cross or a star shape.

[0011] Preferably, the pump body extends horizontally with a cylindrical portion, and the inside of the cylindrical portion is hollowed out to form a metering chamber. The spring is clamped between the metering chamber and the piston push rod.

[0012] Further, the piston push rod has a total of two structures with different thicknesses. Among them, a plurality of recessed grooves are provided on the circumferential surface of the thicker end, and the thinner section can pass through the circular empty position of the piston cover.

[0013] Preferably, the piston cover is sleeved on the piston push rod and fixed to the pump body through a snap structure to limit the distance that the piston push rod moves outward.

[0014] Further, a ventilation channel is provided in the pump body, and one end of the ventilation channel communicates with the pump body joint.

[0015] Further, two or more small holes are provided on the pump body as ventilation holes. When the piston push rod is not pressed, the piston push rod will block the ventilation holes. When the piston push rod is pressed, the ventilation holes connect the inside of the pump body with the outside air of the side pressure pump assembly. One of the ventilation holes is connected to the ventilation channel.

[0016] Further, a small hole is provided on the pump body joint to communicate the ventilation channel with the inside of the liquid storage bottle.

[0017] Further, the push button is fixed between the outer shells through a rotating shaft.

[0018] Further, a transparent window is provided on the outer shell, and the position of the transparent window corresponds to the position of the internal liquid storage bottle. The inside of the liquid storage bottle can be observed through the transparent window.

[0019] Compared with the prior art, the present utility model has the following beneficial effects:

[0020] 1. By means of the built-in side pressure pump structure, the side pressure action is directly applied to the side pressure pump structure, avoiding errors in the transmission process. When a patient uses the device designed by the present utility model, the patient only needs to apply a force to the push button of the device to start the side pressure pump assembly, without having to lift the entire liquid storage bottle with effort, and the operation is more convenient and labor-saving.

[0021] 2. The side pressure pump assembly and the liquid storage assembly are independent of each other. After the liquid storage assembly completes the filling of the liquid medicine, the single assembly can be encapsulated using the bottle cap. Compared with the products on the market currently that encapsulate the pump body structure on the liquid storage bottle, the encapsulation operation is simpler and more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the following description of the embodiments with reference to the accompanying drawings, where:

[0023] Figure 1 is an exploded view of the overall structure of a side pressure nasal drug delivery device according to a preferred embodiment of the present utility model;

[0024] Figure 2 is an exploded view of the nozzle assembly, side pressure pump assembly and liquid storage assembly of a side pressure nasal drug delivery device according to a preferred embodiment of the present utility model;

[0025] Figure 3 is a front view of the overall appearance of a side pressure nasal drug delivery device according to a preferred embodiment of the present utility model;

[0026] Figure 4 is a sectional view of the overall structure of a side pressure nasal drug delivery device according to a preferred embodiment of the present utility model;

[0027] Figure 5 is a sectional view of a partial liquid storage assembly of a side pressure nasal drug delivery device according to a preferred embodiment of the present utility model;

[0028] Figure 6 is a schematic structural view of the liquid storage assembly of a side pressure nasal drug delivery device according to a preferred embodiment of the present utility model;

[0029] Figure 7 is a sectional view of the side pressure pump assembly in an unused state according to a preferred embodiment of the present utility model;

[0030] Figure 8 is a sectional view of the side pressure pump assembly in a pressed state according to a preferred embodiment of the present utility model;

[0031] Figure 9 is a sectional view of the nozzle assembly according to a preferred embodiment of the present utility model;

[0032] Wherein: 1 - nozzle assembly, 2 - side pressure pump assembly, 3 - liquid storage assembly, 4 - nozzle cap, 5 - push button, 6 - housing, 11 - nozzle shell, 12 - nozzle inner core, 21 - pump body, 22 - spring, 23 - piston push rod, 24 - piston cap, 31 - bottle cap, 32 - seal, 33 - pump body joint, 34 - bottle body gasket, 35 - extension tube, 36 - liquid storage bottle, 111 - liquid dispersion protrusion, 211 - metering chamber, 212 - vent hole, 213 - ventilation passage, 321 - cross opening, 401 - anti - accidental touch arm, 601 - transparent window, 602 - rotating shaft. Detailed implementation manners

[0033] The following description is used to disclose the present utility model so that those skilled in the art can implement the present utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations.

[0034] Figures 1 to 9 A preferred embodiment of the side - pressure nasal drug delivery device of the present utility model is shown, which includes: a nozzle assembly 1, a side - pressure pump assembly 2, a liquid storage assembly 3 and a housing assembly, wherein:

[0035] The nozzle assembly 1 includes a nozzle shell 11 and a nozzle inner core 12; the side - pressure pump assembly 2 includes a pump body 21, a spring 22, a piston push rod 23 and a piston cap 24; the liquid storage assembly 3 includes a bottle cap 31, a seal 32, a pump body joint 33, a bottle body gasket 34, an extension tube 35 and a liquid storage bottle 36.

[0036] As Figures 3 - 4 shown, the housing assembly includes a nozzle cap 4, a push button 5 and a housing 6, wherein the nozzle cap 4 can cover the nozzle assembly 1, the housing 6 is divided into two structures and can cover the side - pressure pump assembly 2 and the liquid storage assembly 3, the push button 5 is fixed between the two housings 6 through a rotating shaft 602, an anti - accidental touch arm 401 is arranged inside the nozzle cap 4, and the upper end of the push button 5 rests on the anti - accidental touch arm 401, restricting the position of the push button 5 when the nozzle cap 4 is not removed, avoiding applying force to the push button 5 due to bumping or other reasons during the daily carrying process of the device, causing accidental touch of the device. A transparent window 601 is arranged on the housing 6, and through the transparent window 601, the remaining liquid medicine situation and the remaining available amount in the internal liquid storage bottle 36 can be observed, facilitating the patient to timely prepare for the replacement of a new nasal drug delivery device and avoiding untimely medication.

[0037] As Figures 5 - 6As shown in the figure, in the liquid storage assembly 3, a pump body joint 33 is provided above the liquid storage bottle 36. A bottle gasket 34 is provided between the liquid storage bottle 36 and the pump body joint 33. The lower part of the pump body joint 33 is connected and fixed with an extension tube 35, and the lower part of the extension tube 35 extends to the bottom inside the liquid storage bottle 36. After the liquid medicine is filled into the liquid storage bottle 36, the bottle cap 31 is buckled and fixed on the bottle mouth of the liquid storage bottle 36 to complete the encapsulation and sealing of the liquid storage assembly 3. The upper half of the pump body joint 33 is a concentric circle structure. The inner circle part thereof is a channel for extracting liquid, and the outer circle part is provided with a buckle structure for fixing with the pump body 21. A seal 32 is provided between the pump body joint 33 and the bottle cap 31. The top of the bottle cap 31 is hollowed out with a circular hole to facilitate the lower end of the pump body 21 to pass through. The middle of the seal 32 is a cross-opening structure. When the pump body 21 is buckled and fixed with the pump body joint 33, the lower end of the pump body 21 passes through the cross-opening position of the seal 32, and the seal 32 deforms in the pump body joint 33 to achieve an overall sealing effect.

[0038] As Figures 7 - 8 shown, the pump body 21 extends horizontally outwards with a partial cylindrical structure. One end of a spring 22 abuts against the outside of the protrusion connected to the liquid channel, and the other end of the spring 22 abuts against the inside of the piston push rod 23, applying an outward elastic force to the piston push rod 23. The piston push rod 23 is arranged in a two-stage structure. The section of the piston push rod 23 in contact with the spring 22 is a wider section, and the space left inside the pump body 21 is a metering chamber 211. The section of the piston push rod 23 closer to the outside is a thinner section, and its end face is in contact with the push button 5, so that the force-bearing process of the push button 5 is directly transmitted to the side pressure pump assembly 2. Multiple concave structures are provided on the outside of the wider section of the piston push rod 23 to weaken the frictional force between the piston push rod 23 and the inside of the pump body 21. A piston cover 24 is provided at the opening of the cylindrical structure extending horizontally outwards from the pump body 21. The center of the piston cover 24 is hollowed out to allow the thinner part of the piston push rod 23 to pass through, and the piston cover 24 can limit the outward movement of the piston push rod 23. An air vent channel 213 is provided inside the pump body 21. One end of the air vent channel 213 communicates with the pump body joint 33, and there is a gap left on the pump body joint 3 to communicate with the inside of the liquid storage bottle 36. At the same time, two air vent holes 212 are also provided on the pump body 21. One air vent hole 212 is connected to the air outside the side pressure pump assembly 2, and the other air vent hole 212 is connected to the air vent channel 213.

[0039] Before the device is ready to be used, the push button 5 needs to be pressed 1-2 times to squeeze the air inside the metering chamber 211 out of the device. The pressure inside the metering chamber 211 causes the liquid in the liquid storage bottle 36 to be sucked along the extension tube 35 and fill the metering chamber 211. When the device is not in use, the spring 22 applies an outward force to the piston push rod 23, causing the wider section of the piston push rod 23 to cover the ventilation hole 212. When the device is pressed, the piston push rod 23 moves inward, the spring 22 is compressed, and the wider section of the piston push rod 23 squeezes the liquid in the metering chamber 211, causing it to enter the nozzle assembly 1. At this time, the ventilation hole 212 is not covered, and the outside air of the side pressure pump assembly 2 enters the inside of the liquid storage bottle 36 through the ventilation channel 213 to maintain the internal air pressure balance. When the device is used up, the spring 22 applies an outward force to the piston push rod 23 to cover the ventilation hole 212 again, and the liquid in the liquid storage bottle 36 fills the metering chamber 211 again.

[0040] As Figure 9 shown, the nozzle assembly 1 includes a nozzle housing 11 and a nozzle core 12. The nozzle core 12 is arranged in the nozzle housing 11 and is used to disperse the liquid transmitted by the side pressure pump assembly 2 outward, preventing the liquid from spraying directly in the vertical direction and unable to achieve the effect of atomizing the liquid medicine. There are liquid-dispersing protrusions 111 inside the nozzle housing 11 to further form a vortex of the liquid medicine before spraying and improve the mist shape after the liquid medicine is sprayed.

[0041] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, in the description of the present invention, the meaning of "a plurality of" is two or more unless otherwise specifically defined.

[0042] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A side pressure nasal drug delivery device, comprising a nozzle assembly, a side pressure pump assembly, a liquid storage assembly and a housing assembly, wherein: The nozzle assembly includes a nozzle shell and a nozzle core; the side pressure pump assembly includes a pump body, a spring, a piston push rod and a piston cover, and the piston cover is hollowed out with a circular hole; the liquid storage assembly includes a bottle cap, a sealing member, a pump body joint, a bottle body gasket, an extension tube and a liquid storage bottle, and the top of the bottle cap is hollowed out with a circular hole, the sealing member is arranged between the bottle cap and the pump body joint, and the bottle body gasket is arranged between the pump body joint and the liquid storage bottle; the shell assembly includes an outer shell, a push button and a nozzle cover; It is characterized in that the bottle cap serves as a sealing member to complete the sealing of the liquid storage assembly, and the liquid storage assembly and the side pressure pump assembly are independent of each other.

2. The side pressure nasal drug delivery device according to claim 1, characterized in that: The central position of the sealing member is provided with an opening, and the opening enables the central position of the sealing member to undergo flexible deformation, and the side pressure pump assembly is snap-fitted and connected to the pump body joint through the opening.

3. The side pressure nasal drug delivery device according to claim 1, characterized in that: The pump body is provided with a cylindrical portion extending in the horizontal direction, the interior of the cylindrical portion is hollowed out to form a quantitative chamber, and the spring is clamped between the quantitative chamber and the piston push rod.

4. The side pressure nasal drug delivery device according to claim 1, characterized in that: The piston push rod has two sections of different thicknesses, wherein a plurality of sunken grooves are arranged on the circumferential surface of the thicker end, and the thinner section can pass through the circular empty position of the piston cover.

5. The side pressure nasal drug delivery device according to claim 4, characterized in that: The piston cover is sleeved on the piston push rod and fixed on the pump body through a buckle structure to limit the outward movement distance of the piston push rod.

6. The side pressure nasal drug delivery device according to claim 3, characterized in that: A ventilation channel is arranged in the pump body, and one end of the ventilation channel is connected to the pump body joint.

7. The side pressure nasal drug delivery device according to claim 6, characterized in that: The pump body is provided with two or more small holes as vents. When the piston push rod is not pressed, the piston push rod will block the vent. When the piston push rod is pressed, the vent connects the inside of the pump body with the outside of the side pressure pump assembly for air circulation, and one of the vents is connected to the ventilation channel.

8. The side pressure nasal drug delivery device according to claim 7, characterized in that: A small hole is arranged on the pump body joint so that the ventilation channel is connected with the interior of the liquid storage bottle.

9. The side pressure nasal drug delivery device according to claim 1, characterized in that: The push button is fixed between the shells through a rotating shaft.

10. The side pressure nasal drug delivery device according to claim 9, characterized in that: The shell is provided with a transparent window, the position of the transparent window corresponds to the position of the internal liquid storage bottle, and the inside of the liquid storage bottle can be observed through the transparent window.

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