CN214050075U - Drug delivery device - Google Patents

Abstract

The utility model relates to a device of dosing, it includes nasal spray head, nasal spray valve door and push rod subassembly, is provided with two atomizing passageway that carry out the atomizing to the liquid medicine on the nasal spray head to dosing to two nasal cavities, be provided with liquid spray channel in the nasal spray valve door, the nasal spray head is connected with the nasal spray valve door, and push rod subassembly includes: the push rod, the movable setting of push rod is provided with liquid channel in the installation intracavity of nasal spray valve door, and when the push rod moved the first state, liquid channel made liquid spray channel's liquid outlet and atomizing channel intercommunication to dose to two atomizing channel, when the push rod moved the second state, the push rod cut off liquid spray channel and two atomizing channel, in order to stop dosing. The administration device has better use effect.

Description

Drug delivery device

Technical Field

The utility model relates to the field of mechanical equipment, especially, relate to a device of dosing.

Background

The existing nasal spray administration device mainly comprises a liquid medicine bottle, a nasal spray valve and a nasal spray head. Wherein, the nasal spray valve is used for controlling dosage and carrying out atomization, and the nasal spray head is used for controlling the particle size of the atomized liquid after the liquid medicine is atomized.

The existing nasal spray administration device is very inconvenient to spray medicine, and a patient needs to independently administer medicine to two nasal cavities respectively after taking medicine once. In addition, the mode lug connection that current device of dosing blocked the drain pipe of nose spout valve through the sleeve pipe of nose spout between the drain pipe of nose spout valve and the nose spout head, and this kind of device patient of dosing need press down with forefinger and middle finger grip nose spout head when using, simultaneously hard for the liquid medicine jets out from nose spout head.

However, there are problems in that some patients may misunderstand that the nasal spray head is a cap, do not know how to spray the medicine using the medicine applying apparatus, and have difficulty in pressing the nasal spray head downward, which is very inconvenient.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a drug delivery device to solve the problem of inconvenient use of the existing nasal spray drug delivery device.

The utility model provides a pair of medicine feeding device, it includes nasal spray head, nasal spray valve door and push rod subassembly, is provided with two atomizing passageway that carry out atomizing to the liquid medicine on the nasal spray head to dosing to two nasal cavities, be provided with liquid spray channel in the nasal spray valve door, the nasal spray head is connected with the nasal spray valve door, and push rod subassembly includes: the push rod, the movable setting of push rod is provided with liquid channel in the installation intracavity of nasal spray valve door, and when the push rod moved the first state, liquid channel made liquid spray channel's liquid outlet and atomizing channel intercommunication to dose to two atomizing channel, when the push rod moved the second state, the push rod cut off liquid spray channel and two atomizing channel, in order to stop dosing.

So set up, the nasal spray head of device of dosing has two and carries out atomizing passageway to the liquid medicine, can once only spray the liquid medicine to two nostrils through nasal spray head like this, makes the medicine loading simpler, convenient like this, need not divide twice respectively to the nostril medicine loading. The nasal spray valve is used for matching with the push rod component to control whether to discharge the medicine. Wherein, the liquid spraying channel of the nasal spray valve is used for spraying the liquid medicine. The push rod in the push rod assembly can move in the nasal spray valve, and when the push rod is in the first state, the liquid channel in the push rod enables the liquid spraying channel to be communicated with the atomizing channel, so that liquid medicine can enter the atomizing channel through the liquid spraying channel, and medicine spraying is achieved. When the push rod is in the second state, the liquid spraying channel and the atomizing channel are not communicated, so that medicine discharging can be prevented. Thus, the medicine can be discharged safely and reliably, and the operation is simpler and more convenient.

In one embodiment, an included angle is formed between the moving direction of the push rod and the administration directions of the two atomization channels, and the value range of the included angle is larger than 0 degree and smaller than 180 degrees.

So set up, can make when promoting the push rod more conveniently the application of force.

In one embodiment, the pushrod assembly further comprises a sealing sleeve disposed within the mounting cavity of the nasal spray valve.

So set up, can guarantee the leakproofness to increase the pressure of nose spraying valve door in the push rod moves the in-process of first state.

In one embodiment, the adjusting sleeve is arranged on the push rod, the adjusting sleeve is movable in the mounting cavity and adjusts the volume of a cavity between the adjusting sleeve and the sealing sleeve and communicated with the nasal spray valve, the push rod is movably arranged in the adjusting sleeve and can drive the adjusting sleeve to move in the mounting cavity, and when the push rod moves from the second state to the first state, the push rod, the sealing sleeve and the adjusting sleeve are matched to enable the pressure in the nasal spray valve to be gradually increased.

With the arrangement, the pressure can be effectively increased by matching the adjusting sleeve with the sealing sleeve.

In one embodiment, a first elastic piece is arranged between the adjusting sleeve and the sealing sleeve, a second elastic piece is arranged between the adjusting sleeve and the push rod, and the length of the first elastic piece is greater than that of the second elastic piece.

So set up, can conveniently make adjusting sleeve and push rod reset.

In one embodiment, the drug delivery device further comprises a button disposed at an end of the push rod that extends beyond the nasal spray head.

By the arrangement, the operation of the user can be easier.

In one embodiment, the drug delivery device further comprises a liquid separation structure, wherein the liquid separation structure is arranged between the push rod assembly and the atomization channels and is used for distributing the liquid medicine sprayed out of the liquid channel of the push rod to the two atomization channels.

So set up, can make the liquid medicine all with disperse to two in the atomizing passageway.

In one embodiment, the liquid-separating structure comprises: the upper cover is provided with two liquid separation ports which are connected with the atomizing channels in a one-to-one correspondence manner; the lower cover is detachably connected with the upper cover, a liquid inlet used for being connected with the liquid channel is formed in the lower cover, a groove is formed between the upper cover and the lower cover, a liquid distribution channel is formed when the upper cover and the lower cover are buckled, and the liquid inlet is communicated with the liquid distribution port through the liquid distribution channel.

So set up for divide liquid structure processing and use more easily.

In one embodiment, an atomizing structure is arranged in the atomizing channel of the nasal spray head, and a gap for spraying the liquid medicine is formed between the atomizing structure and the wall surface of the atomizing channel.

So set up, can be so that better atomization effect to the liquid medicine.

In one embodiment, the nasal spray valve comprises a valve body and a one-way valve, wherein the valve body comprises: the first mounting part is connected with the nasal spray head and comprises a mounting cavity; and the second mounting part is connected with the first mounting part, a liquid spraying channel and a valve cavity are arranged on the second mounting part, and the one-way valve is arranged in the valve cavity.

So set up for the processing and the use of nose spout valve are all more convenient.

Drawings

Fig. 1 is a schematic front view of a drug delivery device according to an embodiment of the present invention;

FIG. 2 is a schematic sectional view taken along line A-A in FIG. 1;

fig. 3 is a partially enlarged cross-sectional structural schematic view of a push rod assembly of a drug delivery device according to an embodiment of the present invention;

fig. 4 is a schematic partial cross-sectional structural view of a nasal spray head of a drug delivery device according to an embodiment of the present invention;

fig. 5 is a schematic perspective view of a nasal spray head of a drug delivery device according to an embodiment of the present invention;

FIG. 6 is a schematic sectional view taken along line B-B in FIG. 4;

fig. 7 is a schematic structural view of a valve body of a nasal spray valve of a drug delivery device according to an embodiment of the present invention;

FIG. 8 is a schematic cross-sectional view taken along line C-C of FIG. 7;

fig. 9 is a schematic perspective view of a valve body of a nasal spray valve of a drug delivery device according to an embodiment of the present invention;

fig. 10 is a side view schematic of a push rod of a drug delivery device according to an embodiment of the present invention;

FIG. 11 is a schematic cross-sectional view taken along line D-D of FIG. 10;

fig. 12 is a schematic perspective view of a push rod of a drug delivery device according to an embodiment of the present invention;

figure 13 is a cross-sectional structural schematic view of a washer sleeve of a drug delivery device according to an embodiment of the present invention;

fig. 14 is a schematic perspective view of a sealing sleeve of a drug delivery device according to an embodiment of the present invention;

figure 15 is a schematic cross-sectional structural view of a sealing sleeve of a drug delivery device according to an embodiment of the present invention;

figure 16 is a schematic perspective view of an adjustment sleeve of a drug delivery device according to an embodiment of the present invention;

figure 17 is a schematic cross-sectional structural view of an adjustment sleeve of a drug delivery device according to an embodiment of the present invention;

fig. 18 is a schematic top view of a dispensing structure of a drug delivery device according to an embodiment of the present invention;

fig. 19 is a schematic view, partially in section, of a liquid separating structure of a drug delivery device according to an embodiment of the present invention;

fig. 20 is a schematic view, partly in section, of a top cover and a bottom cover separated of a liquid separating structure of a drug delivery device according to an embodiment of the present invention;

fig. 21 is a schematic perspective view showing the separation of the upper cover and the lower cover of the liquid separating structure of the drug delivery device according to the embodiment of the present invention.

Description of reference numerals:

10. a nasal spray; 11. an atomizing channel; 20. a nasal spray valve; 21. a liquid ejection channel; 22. a first mounting portion; 221. a mounting cavity; 23. a second mounting portion; 24. a one-way valve; 31. sealing the sleeve; 32. a push rod; 321. a liquid channel; 33. adjusting the sleeve; 34. a first elastic member; 35. a second elastic member; 36. a button; 37. a washer bushing; 40. a liquid separating structure; 41. an upper cover; 411. a liquid separation port; 42. a lower cover; 43. a groove; 50. a connecting pipe; 60. and (4) a bottle body.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly mounted on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-21, the present invention provides a drug delivery device, which includes a nasal spray head 10, a nasal spray valve 20 and a push rod assembly, the nasal spray head 10 is provided with two atomizing channels 11 for atomizing drug liquid to deliver drug to two nasal cavities, the nasal spray valve 20 is provided with a liquid spray channel 21, the nasal spray head 10 is connected to the nasal spray valve 20, the push rod assembly includes a push rod 32, the push rod 32 is movably disposed in an installation cavity 221 of the nasal spray valve 20, the push rod 32 is provided with a liquid channel 321, when the push rod 32 moves to a first state, the liquid channel 321 makes a liquid outlet of the liquid spray channel 21 communicate with the atomizing channels 11 to deliver drug to the two atomizing channels 11, when the push rod 32 moves to a second state, the push rod 32 cuts off the liquid spray channel 21 and the two atomizing channels 11 to stop drug delivery.

This drug delivery device's nose shower nozzle 10 has two atomizing passageway 11 that carry out atomizing to the liquid medicine, can once only spray the liquid medicine to two nostrils through nose shower nozzle 10 like this for it is simpler, convenient to go up the medicine, need not divide twice respectively to go up the medicine to the nostril. And the nasal spray valve 20 is used to cooperate with the push rod assembly to control whether to discharge the medicine. The liquid spraying channel 21 of the nasal spray valve 20 is used for spraying the liquid medicine. The push rod 32 of the push rod assembly can move in the nasal spray valve 20, and when the push rod 32 is in the first state, the liquid channel 321 in the push rod 32 enables the liquid spray channel 21 to communicate with the atomizing channel 11, so that the liquid medicine can enter the atomizing channel 11 through the liquid spray channel 21 to realize medicine spraying. When the push rod 32 is in the second state, since there is no communication between the liquid ejection channel 21 and the atomizing channel 11, discharge of the medicine can be prevented. Thus, the medicine can be discharged safely and reliably, and the operation is simpler and more convenient.

In this embodiment, a nasal spray administration device is taken as an example, and an administration device will be described.

As shown in fig. 4 to 6, the nasal spray head 10 includes a nozzle portion for extending into the nostril and a mounting portion for cooperating with the nasal spray valve 20. Wherein, the nozzle part is divided into two parts, and is provided with an atomizing channel 11 to match with two nostrils to realize simultaneous administration.

Optionally, an atomizing structure is disposed in the atomizing passage 11 of the nasal spray head 10, and a gap for spraying the liquid medicine is formed between the atomizing structure and the wall surface of the atomizing passage 11. The liquid medicine can be atomized through the gap, so that the medicine can be better administered and the liquid medicine can be dispersed.

In a possible manner, the atomising structure may be injection moulded directly with the atomising channel 11.

The nasal spray nozzle 10 has a mounting portion for cooperating with the nasal spray valve 20, the nasal spray valve 20 is connected to the bottle body 60, and the bottle body 60 may be a liquid medicine bottle, so that the nasal spray valve 20 can control the liquid medicine to be delivered to the nasal spray nozzle 10.

As shown in fig. 7 to 9, the nasal spray valve 20 includes a valve body and a check valve 24, wherein the valve body includes a first mounting portion 22 and a second mounting portion 23, the first mounting portion 22 is connected to the nasal spray 10, the first mounting portion 22 includes a mounting cavity 221, the second mounting portion 23 is integrally formed with the first mounting portion 22, the second mounting portion 23 is provided with a spray passage 21 and a valve cavity, and the check valve 24 is disposed in the valve cavity.

For example, the first mounting portion 22 and the second mounting portion 23 of the valve body are integrally formed as a T-shaped valve body, so that the push rod 32 can apply force more easily after being matched with the push rod assembly, thereby facilitating and simplifying the operation of discharging medicine.

In the present embodiment, the first mounting portion 22 is cylindrical for mating with the nasal spray head 10 to mount and position the nasal spray head 10. The nose spray 10 and the first mounting portion 22 may be provided with an over-tight fit therebetween. A mounting cavity 221 is formed in the first mounting portion 22, and the mounting cavity 221 is used for mounting the push rod 32 and the like. The second mounting portion 23 is integrally formed on the first mounting portion 22, and the second mounting portion 23 is used to mount the connection tube 50 and the bottle body 60.

The liquid spraying passage 21 of the nasal spray valve 20 is provided on the second mounting portion 23, and in addition, a valve chamber is provided on the second mounting portion 23 to accommodate a check valve 24, and the flow direction of the liquid medicine is controlled by the check valve 24. In order to facilitate the connection of the connection pipe 50, a connection structure with threads is provided on the second mounting portion 23, the connection structure is connected with the second mounting portion 23 through threads, and the connection pipe 50 is connected with the second mounting portion 23 through the connection structure, so that the quick mounting and dismounting are realized. The connection pipe 50 may be a plastic hose or the like.

The second mounting portion 23 and the bottle body 60 can be engaged with each other through a rubber plug and a crimp cap to ensure a secure connection therebetween.

The push rod assembly is disposed in the mounting cavity 221 of the first mounting portion 22, and for facilitating the application of force, after the push rod 32 is mounted, an included angle is formed between the moving direction of the push rod 32 and the administration directions of the two nebulization channels 11, and the value range of the included angle is greater than 0 ° and less than 180 °.

Since the moving direction of the push rod 32 is not parallel to the administration direction of the nebulization channel 11, it is easier and more labor-saving to operate the push rod 32. For example, the direction of dosing is vertical direction during normal use, and the moving direction of push rod 32 can be the horizontal direction, that is to say, the user only needs the level to promote push rod 32 and remove, just can realize out the medicine, and this has solved the inconvenient problem of application of force that needs vertical pressing to go out the medicine to cause among the prior art for make power and operation more convenient.

Of course, in other embodiments, the moving direction of the push rod 32 may be other than horizontal, and the embodiment does not limit this. It should be noted that the value of the included angle may be determined according to design requirements, and this embodiment does not limit this.

In order to cooperate with the push rod 32, the push rod assembly further comprises a sealing sleeve 31, and the sealing sleeve 31 is arranged in the mounting cavity 221 of the nasal spray valve 20.

The first mounting portion 22 can be sealed by providing a sealing sleeve 31 so that movement of the push rod 32 conveniently changes the pressure at the liquid spray passage 21 in the nasal spray valve 20 to achieve discharge control.

For example, the end of the first mounting portion 22 may be open, that is, the mounting cavity 221 penetrates the first mounting portion 22, and the sealing sleeve 31 is detachably mounted at the opening of the first mounting portion 22, so that the first mounting portion 22 is easily manufactured and manufactured, thereby reducing the manufacturing cost, and the sealing sleeve 31 is provided to ensure the sealing property.

The sealing sleeve 31 may be made of rubber or plastic with soft material, and is inserted and fixed in the mounting cavity 221 of the first mounting portion 22 by deformation, and meanwhile, the sealing sleeve 31 may be matched with the side surface of the nasal spray head 10.

Similarly, to promote sealing, a gasket sleeve 37 is also provided on the nasal spray head 10, the gasket sleeve 37 cooperating with the conditional sleeve to seal the aperture of the nasal spray head 10 that receives the pushrod 32.

Optionally, in order to change the size of the chamber more conveniently, an adjusting sleeve 33 is disposed on the push rod 32, the adjusting sleeve 33 is movable in the installation cavity 221, and adjusts the volume of the chamber between the adjusting sleeve 33 and the sealing sleeve 31, which is communicated with the nasal spray valve 20, the push rod 32 is movably disposed in the adjusting sleeve 33 and can drive the adjusting sleeve 33 to move in the installation cavity 221, and when the push rod 32 moves from the second state to the first state, the push rod 32, the sealing sleeve 31 and the adjusting sleeve 33 cooperate to gradually increase the pressure in the nasal spray valve 20.

As shown in fig. 2 and 3, the adjusting sleeve 33 is fixed by the cooperation of the rubber plug and the gland below the adjusting sleeve. During the movement of the push rod 32 to the first state, the adjustment sleeve 33 may move a distance with the push rod 32, such that the distance between the adjustment sleeve 33 and the sealing sleeve 31 decreases, i.e. the chamber volume decreases, such that the pressure increases.

Optionally, a first elastic member 34 is disposed between the adjusting sleeve 33 and the sealing sleeve 31, a second elastic member 35 is disposed between the adjusting sleeve 33 and the push rod 32, and the length of the first elastic member 34 is greater than that of the second elastic member 35.

The first elastic piece 34 and the second elastic piece 35 can facilitate the resetting of the adjusting sleeve 33 and the push rod 32, so that the next use is facilitated. Besides, by adjusting the lengths of the first elastic member 34 and the second elastic member 35, the timing of the movement of the push rod 32 relative to the adjustment sleeve 33 can be controlled.

For example, in the embodiment, the length of the first elastic member 34 is greater than the length of the second elastic member 35, and both are springs, for example, when the push rod 32 is pushed, the first elastic member 34 (referred to as spring 1) is firstly squeezed, and the adjusting sleeve outside the push rod 32 is squeezed by the second elastic member 35 (referred to as spring 2) to start compressing the space of the chamber, so that the air pressure inside the chamber with reduced volume rises.

After the spring 1 is extruded to a certain degree, the spring 2 starts to be pressed and deformed, at the moment, the push rod 32 slowly extends out of the adjusting sleeve 33, when the hole of the liquid channel 321 of the push rod 32 is exposed out of the adjusting sleeve 33, the liquid channel 321 in the push rod 32 is communicated with the atomizing channel 11 to enable the atomizing channel to be connected with the external atmosphere, and the pressure in the valve body is higher than the external atmospheric pressure at the moment, so that the liquid medicine is jetted out under the action of pressure difference, enters the atomizing channel 11 through the liquid channel 321, and is sprayed out after atomization.

Optionally, in order to facilitate the application of force and to enable the user to clearly know where to operate the drug delivery device, the drug delivery device further comprises a button 36, the button 36 being arranged at the end of the push rod 32 that protrudes from the nasal spray head 10.

Thus, when the button 36 is pressed, the button 36 pushes the push rod 32 to move, so that the push rod moves to the first state, and the liquid passage 321 communicates with the atomizing passage 11 and the liquid ejecting passage 21. Because the two atomizing passages 11 are provided, in order to ensure that the two passages can uniformly obtain the liquid medicine, the administration device further comprises a liquid distribution structure 40, the liquid distribution structure 40 is arranged between the push rod assembly and the atomizing passages 11, and distributes the liquid medicine sprayed from the liquid passage 321 of the push rod 32 to the two atomizing passages 11. The liquid medicine can be uniformly introduced into the two atomizing passages 11 by arranging the liquid separating structure 40 so as to ensure the administration effect.

In a possible mode, the liquid separating structure 40 comprises an upper cover 41 and a lower cover 42, two liquid separating ports 411 are arranged on the upper cover 41, and the liquid separating ports 411 are connected with the atomizing channels 11 in a one-to-one correspondence manner; the lower cover 42 is detachably connected with the upper cover 41, a liquid inlet for connecting with the liquid channel 321 is arranged on the lower cover 42, and a groove 43 is arranged between the upper cover 41 and the lower cover 42, so that a liquid separation channel is formed when the upper cover 41 and the lower cover 42 are buckled, and the liquid inlet and the liquid separation port 411 are communicated through the liquid separation channel.

The liquid medicine that gets into through the inlet is divided liquid channel drainage to two and is divided liquid mouth 411 like this to respectively get into two atomizing passageway 11, under atomizing structure's in atomizing passageway 11 effect (atomizing structure and atomizing passageway 11 wall between form the slit, the slit extrudes the liquid medicine that high-speed efflux came out into the droplet), form the droplet and enter into patient's nasal cavity. Since there is no medical fluid in the valve body of the nasal valve 20 at first, the patient needs to be pre-pressed before use.

Can realize two nasal cavities through this device of dosing and administer, when satisfying the demand of partial dose and atomizing liquid medicine, realize the effect of dosing simultaneously in two nasal cavities of patient through two atomizing channel 11 of nose shower nozzle 10, solved among the prior art patient need carry out the complicated problem of operation that the operation mode exists of dosing to every nasal cavity respectively alone for patient's operation is simplified more.

Simultaneously through 36 formula trigger designs of button, can help patient to reduce the misuse, solve current nasal spray device, patient need clamp nose shower nozzle 10 with forefinger and middle finger when using, press down hard simultaneously, make the liquid medicine after the atomizing can follow the patient that nose shower nozzle 10 jetted out the existence and easily mistake and regard as nose shower nozzle 10 exactly as the lid, do not know the problem that how to trigger the atomizing of nose spray device and dose. In addition, the button 36 design solves the problem that the action of holding the nose spray head 10 between the index finger and the middle finger and extending into the nasal cavity is inconvenient for the patient, so that the patient can use the nose spray head more comfortably.

The lateral movement of the push rod 32 can be guided by the provision of the gasket sleeve 37, and the gasket sleeve 37 is made of rubber or a relatively soft plastic and is inserted into the side of the nasal spray head 10 by deformation, thereby achieving sealing.

During the movement of the push rod 32, the second elastic member 35 drives the adjusting sleeve 33 to move to compress the air in the valve body, resulting in a large pressure difference between the inside and the outside, and when the liquid passage 321 is communicated with the liquid spraying passage 21, the liquid medicine is jetted out.

The liquid separation channel is located below the nasal spray head 10 and is half of the upper part and half of the lower part, so that the processing is more convenient, and the two liquid separation ports 411 of the liquid separation channel are connected with the two atomization channels 11 of the nasal spray head 10 through over-tight matching.

A slit is formed between the atomizing structure (cylinder) in the atomizing channel 11 and the wall surface of the atomizing channel 11 to atomize the liquid droplets. The inner sides of the adjustment sleeve 33 and the sealing sleeve 31 are both configured to hold a spring.

When using, the push rod 32 receives the promotion, drive the space of the cavity of adjusting sleeve 33 compression valve body through spring 2, lead to the air pressure in the cavity to rise, after push rod 32 continues to move and stretches into the cavity, the inside liquid passage 321 of push rod 32 makes outside and inside be linked together, under the effect of atmospheric pressure difference, liquid is pushed away by high-pressure gas, through the inside liquid passage 321 of push rod 32, reach and divide liquid channel, divide liquid channel again, reach the atomizing channel 11 of nose shower nozzle 10, structure atomizing dispersion in atomizing channel 11 goes out.

The features of the above-described embodiments may be arbitrarily combined, and for the sake of brevity, all possible combinations of the features in the above-described embodiments are not described, but should be construed as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the features.

It will be appreciated by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be taken as limiting the present invention, and that suitable modifications and variations of the above embodiments are within the scope of the invention as claimed.

Claims (10)

1. The utility model provides a device of dosing, its characterized in that, includes nose shower nozzle (10), nasal spray valve door (20) and push rod subassembly, be provided with two atomizing passageway (11) that carry out atomizing to the liquid medicine on nose shower nozzle (10) to dose to two nasal cavities, be provided with hydrojet passageway (21) in nasal spray valve door (20), nose shower nozzle (10) with nasal spray valve door (20) are connected, push rod subassembly includes:

the nasal spray device comprises a push rod (32), wherein the push rod (32) is movably arranged in an installation cavity (221) of the nasal spray valve (20), a liquid channel (321) is arranged on the push rod (32), when the push rod (32) moves to a first state, the liquid channel (321) enables a liquid outlet of the liquid spray channel (21) to be communicated with the atomization channel (11) so as to administer medicine to the two atomization channels (11), and when the push rod (32) moves to a second state, the push rod (32) cuts off the liquid spray channel (21) and the two atomization channels (11) so as to stop administering medicine.

2. The drug delivery device according to claim 1, characterized in that the direction of movement of the push rod (32) and the direction of delivery of the two nebulization channel (11) have an angle therebetween, and the angle has a value in the range of more than 0 ° and less than 180 °.

3. The drug delivery device of claim 1, wherein the push rod assembly further comprises a sealing sleeve (31), the sealing sleeve (31) being disposed within the mounting cavity (221) of the nasal spray valve (20).

4. The drug delivery device according to claim 3, characterized in that the push rod (32) is provided with an adjusting sleeve (33), the adjusting sleeve (33) is movable in the mounting cavity (221) and adjusts the volume of a chamber between the adjusting sleeve (33) and the sealing sleeve (31) communicated with the nasal spray valve (20), the push rod (32) is movably arranged in the adjusting sleeve (33) and can drive the adjusting sleeve (33) to move in the mounting cavity (221), and the push rod (32), the sealing sleeve (31) and the adjusting sleeve (33) are matched to gradually increase the pressure in the nasal spray valve (20) when the push rod (32) moves from the second state to the first state.

5. The drug delivery device according to claim 4, characterized in that a first elastic member (34) is arranged between the adjustment sleeve (33) and the sealing sleeve (31), a second elastic member (35) is arranged between the adjustment sleeve (33) and the push rod (32), and the length of the first elastic member (34) is greater than the length of the second elastic member (35).

6. The drug delivery device according to any of claims 1 to 5, characterized in that the drug delivery device further comprises a button (36), the button (36) being arranged at the end of the push rod (32) protruding the nasal spray head (10).

7. The drug delivery device according to claim 1, further comprising a liquid distribution structure (40), wherein the liquid distribution structure (40) is disposed between the push rod assembly and the nebulization channel (11) and distributes the liquid drug ejected from the liquid channel (321) of the push rod (32) to both of the nebulization channels (11).

8. The delivery device according to claim 7, wherein said liquid-separating structure (40) comprises:

the upper cover (41), two liquid separation ports (411) are arranged on the upper cover (41), and the liquid separation ports (411) are connected with the atomizing channels (11) in a one-to-one correspondence manner;

lower cover (42), lower cover (42) with upper cover (41) detachably connects, be provided with on lower cover (42) be used for with the inlet that liquid channel (321) are connected, upper cover (41) with be provided with between lower cover (42) recess (43), with upper cover (41) with form when lower cover (42) lock and divide liquid channel, and pass through divide liquid channel intercommunication the inlet with divide liquid mouth (411).

9. The drug delivery device according to claim 1, wherein an atomizing structure is provided in the atomizing passage (11) of the nasal spray head (10), and a gap for spraying the liquid drug is formed between the atomizing structure and the wall surface of the atomizing passage (11).

10. The drug delivery device according to claim 1, wherein the nasal valve (20) comprises a valve body and a one-way valve (24), the valve body comprising:

a first mounting portion (22), said first mounting portion (22) being connected to said nasal spray head (10), and said first mounting portion (22) including said mounting cavity (221);

the second mounting portion (23), the second mounting portion (23) and the first mounting portion (22) are integrally formed, the liquid spraying channel (21) and a valve cavity are arranged on the second mounting portion (23), and the one-way valve (24) is arranged in the valve cavity.

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