CN117462797A - Suction nozzle assembly and fluid atomization delivery device - Google Patents

Abstract

The invention relates to a suction nozzle assembly and a fluid atomization delivery device. The suction nozzle assembly includes: a suction part having a sound emitting part; and an atomizing assembly connected to the suction nozzle portion, wherein when a user inhales using the suction nozzle portion, an air flow flows through the sound emitting portion to generate sound, and the sound emitting portion is configured to generate sound only when the air flow having a flow rate of between 5L/min and 18L/min passes through. According to the suction nozzle assembly, the sound emitting part is arranged, so that when a user inhales by using the suction nozzle part, the sound emitting part can generate sound, and further, the inhalation state of the user can be clearly prompted, and at the moment, the administration is beneficial to improving the administration effect.

Description

Suction nozzle assembly and fluid atomization delivery device

Technical Field

The invention relates to the technical field of medical equipment, in particular to a suction nozzle assembly and a fluid atomization delivery device.

Background

At present, a common injection mode is used for vaccinating or injecting other medicines into a human body, but the injection mode can cause great pain, brings bad experience to an injected person, and easily leads the injected person (especially children) to generate resistance. In order to avoid the above, it is common to administer drugs using an atomizing device. However, when the atomization device is used for drug administration, a drug administrator cannot judge whether a patient inhales or not, and the situation that the patient does not inhale for drug administration or the drug administration time is poor often occurs, so that the drug administration effect of the drug is affected, and the treatment effect on the patient is further affected.

Meanwhile, some drug delivery devices are usually provided with an atomization cup, and atomized liquid medicine in the atomization cup may be settled and converged into non-inhalable particles under the influence of ambient temperature, humidity and gravity, so that the dosing accuracy of drug delivery is affected.

Patent publication CN111821653a discloses an inhalation administration training whistle comprising: the device comprises a cover cap, a suction nozzle, a plate, an operating mechanism with a puncture needle and an elastic element and a lower shell; the cover, the mouthpiece, the plate and the lower housing are connected by a single hinge. The patent is provided with the airflow sounding device sinking into the cavity below at the joint of the plate and the suction nozzle at the closed position, and the airflow sounding device is arranged to replace the original capsule cavity, so that whether the patient can use the inhaler or not can be estimated according to whistle sounds sent by the airflow sounding device, and the mode of using the inhaler by correcting errors of the patient can be finally realized. However, the airflow sounding device in the training whistle is mainly designed for a specific inhaler, has a complex structure, is not suitable for a common suction nozzle assembly with an atomization function, is limited by space in application, is inconvenient to install, and has high preparation cost.

Disclosure of Invention

Based on the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a suction nozzle assembly, which can feed back the inhalation process of a user to a person to be administered in a sound manner, so as to facilitate the person to be administered to accurately determine the timing of administration.

Another object of the present invention is to provide a fluid atomizing delivery device, which directly administers through a prefilled syringe, avoiding the loss of the drug solution due to precipitation in the environment after atomization, and facilitating accurate dosing.

Therefore, the invention provides the following technical scheme.

The present invention provides a suction nozzle assembly, comprising:

a suction part having a sound emitting part;

an atomizing assembly connected with the suction nozzle part,

wherein when a user inhales using the suction nozzle portion, an air flow flows through the sound emitting portion to generate sound, and the sound emitting portion is configured to generate sound only when the air flow having a flow rate of between 5L/min and 18L/min passes.

In at least one embodiment, the suction nozzle portion has an air flow passage communicating an inner space and an outer space thereof, and the sounding portion is configured as a sounding spring disposed at the air flow passage.

In at least one embodiment, the sounding spring sheet extends from one end of the air flow channel, which is located inside the suction nozzle portion, away from the air flow channel, and the sounding spring sheet is disposed inside the suction nozzle portion.

In at least one embodiment, the nozzle portion includes a housing portion and a nozzle connection portion, and the air flow passage is formed between the housing portion and the nozzle connection portion.

In at least one embodiment, the sounding spring sheet extends along the axial direction of the suction nozzle part; and/or

The air flow channel is arranged along the axial extension of the suction nozzle part.

In at least one embodiment, an air flow guiding groove is formed on the outer circumferential surface of the nozzle connecting portion, and the air flow guiding groove and the sounding spring sheet are arranged opposite to each other in the radial direction of the nozzle connecting portion.

In at least one embodiment, the sounding spring plates are multiple, and the sounding spring plates are arranged around the suction nozzle connecting part.

In at least one embodiment, the atomizing assembly includes an intermediate connection including a first chamber and a second chamber in fluid communication,

the first chamber is used for introducing fluid;

the nozzle assembly is at least partially disposed in the second chamber.

In at least one embodiment, the nozzle assembly is disposed in a space defined by the nozzle connecting portion and the intermediate connecting portion.

In at least one embodiment, the suction nozzle connecting part is sleeved on the middle connecting part, and the suction nozzle connecting part is provided with a liquid suction port for the vaporific fluid to pass through.

In at least one embodiment, the nozzle assembly includes a nozzle body having at least two atomizing channels formed therein;

wherein the extension lines of the spray ends of the at least two atomizing channels meet at a point, or

The at least two atomizing channels are arranged in parallel, and the apertures of the at least two atomizing channels are different.

The present invention also provides a fluid atomizing delivery apparatus, comprising:

the suction nozzle assembly of any of the above embodiments;

and the prefilled syringe is used for connecting the suction nozzle assembly and injecting fluid into the suction nozzle assembly.

Advantageous effects

According to the suction nozzle assembly, the sound emitting part is arranged, so that when a user inhales by using the suction nozzle part, the sound emitting part can generate sound, and further, the inhalation state of the user can be clearly prompted, and at the moment, the administration is beneficial to improving the administration effect, and the problem of medication non-ideal caused by improper administration time is avoided.

According to the fluid atomization delivery device, the pre-filling and sealing injector is arranged, so that the liquid medicine can be accurately quantified, an atomization cup is not required to be used in the atomization process, the atomized liquid medicine is not influenced by the ambient temperature, the humidity and the gravity, and the accurate drug delivery can be realized; meanwhile, the liquid atomization delivery device is used for drug delivery by arranging the pre-filled and sealed injector, the operation is simple, the cost is low, and compared with the existing atomization delivery device, the liquid atomization delivery device is low in cost; in addition, the fluid atomizing delivery device of the present invention can be disposable without risk of cross infection.

Drawings

Fig. 1 shows a schematic structural view of a fluid atomizing delivery apparatus according to the present invention.

Fig. 2 shows an angled cross-sectional view of a fluid atomizing delivery apparatus of the present invention.

Fig. 3 shows another angular cross-sectional view of the fluid atomizing delivery apparatus of the present invention.

Fig. 4 shows a partial enlarged view of the portion a in fig. 2.

Fig. 5 shows a schematic structural view of the mouthpiece section of the present invention.

Fig. 6 shows a schematic structural view of the nozzle body of the present invention.

Fig. 7 is a schematic view showing a modification of the nozzle body of the present invention.

Description of the reference numerals

1. A suction nozzle assembly;

11. a suction part; 111. an air flow channel; 112. a sounding spring plate; 113. a housing portion; 114. a suction nozzle connecting part; 1141. an air flow guiding groove; 115. a liquid suction port;

12. an atomizing assembly; 121. an intermediate connection portion; 1211. a first chamber; 1212. a second chamber; 122. a nozzle assembly; 1221. a nozzle body; 12211. an atomizing passage; 1222. a nozzle cover; 1223. an elastic protection member; 1224. a nozzle fixing seat;

2. prefilled syringe; 21. an injection part; 211. an injection needle; 212. an injection connection; 22. a needle cylinder part; 23. a rubber plug part; 24. a push rod part; 25. and a boosting part.

Detailed Description

In order to make the technical scheme and the beneficial effects of the invention more obvious and understandable, the following detailed description is given by way of example. Wherein the drawings are not necessarily to scale, and wherein local features may be exaggerated or reduced to more clearly show details of the local features; unless defined otherwise, technical and scientific terms used herein have the same meaning as technical and scientific terms in the technical field to which this application belongs.

In the description of the present invention, the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "height", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. refer to the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are merely for convenience of simplifying the description of the present invention, and do not indicate that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, i.e., are not to be construed as limiting the present invention.

In the present invention, the terms "first", "second" are used for descriptive purposes only and are not to be construed as relative importance of the features indicated or the number of technical features indicated. Thus, a feature defining "first", "second" may explicitly include at least one such feature. In the description of the present invention, "plurality" means at least two; "plurality" means at least one; unless otherwise specifically defined.

In the present invention, the terms "mounted," "connected," "secured," "disposed," and the like are to be construed broadly, unless otherwise specifically limited. For example, "connected" may be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, or can be communicated between two elements or the interaction relationship between the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless explicitly defined otherwise, a first feature "on", "above", "over" and "above", "below" or "under" a second feature may be that the first feature and the second feature are in direct contact, or that the first feature and the second feature are in indirect contact via an intermediary. Moreover, a first feature "above," "over" and "on" a second feature may be that the first feature is directly above or obliquely above the second feature, or simply indicates that the level of the first feature is higher than the level of the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the level of the first feature is less than the level of the second feature.

Specific embodiments of fluid atomizing delivery apparatus according to the present invention are described in detail below with reference to fig. 1-7.

In the present embodiment, as shown in fig. 1, a fluid atomizing delivery apparatus according to the present invention includes a suction nozzle assembly 1 and a prefilled syringe 2. Wherein the prefilled syringe 2 is used for connecting with the suction nozzle assembly 1 and injecting a fluid (e.g., a medicinal liquid) into the suction nozzle assembly 1.

As shown in fig. 2 to 3, the suction nozzle assembly 1 includes a suction nozzle portion 11 and an atomizing assembly 12. The nozzle 11 is used for a user to hold to suck atomized liquid medicine, and the atomizing assembly 12 is connected with the nozzle 11 and is used for atomizing the liquid medicine injected into the prefilled syringe 2.

As shown in fig. 4, the nozzle portion 11 includes an airflow passage 111, a sound emitting portion, a housing portion 113, and a nozzle connecting portion 114. Wherein the air flow passage 111 is formed between the housing portion 113 and the nozzle connecting portion 114, and the sound emitting portion is configured to: when the user inhales using the suction nozzle portion 11, the air flow passes through the sound emitting portion to generate sound, specifically, the sound emitting portion is configured as a sound emitting dome 112 provided at the air flow channel 111. Through setting up the sounding portion, be favorable to the person of dosing to judge whether the receiver is breathing in, and then can administer in the appropriate opportunity, finally obtain better effect of dosing.

Further, the sounding spring plate extends from one end of the airflow channel 111 located inside the nozzle portion 11 away from the airflow channel 111, and the sounding spring plate 112 is located inside the nozzle portion 11 as a whole. In this way, the sounding spring sheet 112 is protected from damage.

It should be understood that the sound emitting portion is not limited to be configured as the sound emitting dome 112, but may be configured as a slit structure that emits sound when a specific airflow of a certain flow rate flows therethrough. The sounding spring sheet 112 is not limited to being provided inside the nozzle portion 11, and may be provided outside the nozzle portion 11. The air flow passage 111 may be provided at other positions, for example, formed inside the housing portion 113 or inside the nozzle connecting portion 114.

It is particularly stated that in patent CN111821653a, it is generally necessary to generate such a large airflow rate of 20L/min to 40L/min at the mouthpiece to achieve a good administration effect, because the particular type of inhaler (i.e. dry powder inhaler) and the desired administration position determine that if the airflow rate is small, the dry powder cannot enter the lower respiratory tract administration position well, thereby affecting the administration effect of the drug. However, in the invention, the suction nozzle assembly with an atomization function is used for atomization administration, the expected administration position is the throat position of the upper respiratory tract, a better administration effect can be realized only by small suction force, if the suction force is too large, the primary speed of atomized liquid medicine can be too large, the liquid medicine is deposited on the oral cavity wall after impacting the oral cavity, and adverse effects are generated on the administration effect. Therefore, the sounding part is constructed to make a sound when the patient inhales normally, and the patient does not need to inhale hard. Specifically, in the present embodiment, the sound emitting portion is configured to generate sound only when the air flow having a flow speed of between 5L/min and 18L/min passes, so that adverse effects on drug effects due to excessive suction force can be effectively avoided.

In the present embodiment, the airflow passage 111 extends in the axial direction of the nozzle portion 11, and the sounding spring piece 112 extends in the axial direction of the nozzle portion 11. In this way, the direction in which the airflow passage 111 and the sounding spring 112 are arranged is substantially the same as the direction in which the user inhales, and the user can more easily make a sound when inhaling. Of course, the present invention is not limited thereto, and the air flow channel 111 and the sounding spring sheet 112 may not be provided along the axial direction of the suction nozzle portion 11, so long as the suction nozzle portion 11 may be contained in the mouth of the user for easy inhalation.

The nozzle connecting portion 114 is substantially cylindrical, and has an airflow guiding groove 1141 formed in an outer circumferential surface thereof, the airflow guiding groove 1141 being disposed radially opposite to the sounding spring plate 112. In this way, by providing the air flow guiding slot 1141, the air flow is more easily guided through the sounding spring sheet 112, and the sounding spring sheet 112 is facilitated to generate sound. Optionally, an airflow guiding slot 1141 is provided extending in the axial direction of the nozzle connection part 114.

As shown in fig. 4, one end of the nozzle connection part 114 has a liquid suction port 115, and the medicine liquid atomized by the atomizing assembly 12 can be sucked away from the liquid suction port 115 by a user.

In the present embodiment, as shown in fig. 4, there are two sounding spring pieces 112, two sounding spring pieces 112 are disposed around the nozzle connection portion 114, and the two sounding spring pieces 112 are disposed 180 degrees apart in the circumferential direction of the nozzle connection portion 114. Thus, the provision of two sound producing domes 112 is more advantageous for producing sound and increasing the volume of sound. Of course, the present invention is not limited thereto, and the number of sounding spring pieces 112 may be 1, 3, 4 or more, and the sounding spring pieces 112 may be uniformly spaced apart in the circumferential direction of the nozzle connection part 114 or may be unevenly spaced apart.

In this embodiment, as shown in fig. 4, the atomizing assembly 12 includes an intermediate connection 121 and a nozzle assembly 122. The intermediate connection 121 comprises a first chamber 1211 and a second chamber 1212 in fluid communication, the first chamber 1211 for introducing a fluid injected by the pre-filled syringe 2, the nozzle assembly 122 being partially disposed in the second chamber 1212.

As shown in fig. 4, one end of the intermediate connection portion 121 is screwed to the nozzle connection portion 114, the other end is screwed to the prefilled syringe 2, and the nozzle assembly 122 is disposed in the accommodating space defined by the nozzle connection portion 114 and the intermediate connection portion 121. Of course, the present invention is not limited to threaded connections for a particular connection, but may be a plug-in connection (which may be an interference connection in view of the tightness of the connection), a connection via a fastener, or other connection forms.

As shown in fig. 4, the nozzle assembly 122 includes a nozzle body 1221, a nozzle cover 1222, a resilient guard 1223, and a nozzle mount 1224. The nozzle cover 1222, the nozzle body 1221 and the nozzle fixing base 1224 are sequentially disposed in the axial direction of the intermediate connection portion 121, the elastic protection member 1223 is sleeved outside the nozzle body 1221 and radially located between the nozzle cover 1222 and the nozzle body 1221, and a sealing ring is disposed between the nozzle fixing base 1224 and the intermediate connection portion 121.

As shown in fig. 6, two atomizing passages 12211 are formed in a nozzle body 1221 having a substantially rectangular parallelepiped shape, and extension lines of the ejection ends of the two atomizing passages 12211 meet at a point. Thus, the liquid collision principle can be utilized to form inhalable atomized liquid medicine by collision at a specific angle. Of course, the number of the atomizing passages 12211 is not limited to two, and may be three, four, or more.

Fig. 7 shows a modification of the nozzle body 1221, and as shown in fig. 7, a plurality of atomizing passages 12211 are formed in the substantially cylindrical nozzle body 1221, and the plurality of atomizing passages 12211 are arranged in parallel with each other. Preferably, the plurality of atomizing passages 12211 are each disposed parallel to the axial direction of the nozzle body 1221. Further preferably, the apertures of the plurality of atomizing passages 12211 may be different, for example, gradually increasing or decreasing in the radial direction of the nozzle body 1221, but may alternatively be increasing or decreasing. Thus, atomized liquid medicine with different particle sizes can be obtained, and the atomized liquid medicine is beneficial to settling at different target positions. The pore diameter of the atomizing passage 12211 is in the range of 0.1 to 100. Mu.m, preferably 0.5 to 20. Mu.m, more preferably 1 to 15. Mu.m.

In the present embodiment, as shown in fig. 2, the prefilled syringe 2 includes an injection portion 21, a cylinder portion 22, a rubber stopper portion 23, a push rod portion 24, and a booster portion 25. Wherein, the injection part 21 is arranged at one end of the needle cylinder part 22 for the injection of the liquid medicine; the boosting part 25 is arranged at the other end of the needle cylinder part 22 and is used for a user to operate the force borrowing; the push rod portion 24 is inserted into the cylinder portion 22 from the other end of the cylinder portion 22 for being pushed by a user to cause the liquid medicine in the cylinder portion 22 to flow out from the injection portion 21; the rubber stopper 23 is disposed at one end of the push rod 24 inserted into the syringe 22 for sealing the syringe 22.

As shown in fig. 3 and 4, the injection part 21 includes an injection needle 211 and an injection connection part 212. Wherein the injection needle 211 is inserted into the first chamber 1211 of the intermediate connection part 121 to be able to inject a medicine liquid into the first chamber 1211. The injection connection 212 is screwed with the intermediate connection 121, however, the invention is not limited to a threaded connection for a specific connection, but may be a plug-in (interference connection may be considered in view of the tightness of the connection) or other connection,

in the present embodiment, a sealing ring may be provided in the first chamber 1211 to prevent the liquid medicine from flowing out between the injection needle 211 and the wall surface of the first chamber 1211.

According to the invention, the liquid medicine can be accurately quantified by using the pre-filled and sealed injector, an atomizing cup is not required in the atomizing process, the atomized liquid medicine is not influenced by the ambient temperature, the humidity and the gravity, and the liquid medicine can be accurately dosed; meanwhile, the invention is administered by arranging the prefilled syringe, and the operation is simple.

The method of using a fluid atomizing delivery apparatus according to the present invention is briefly described below.

In the present embodiment, a predetermined amount of a drug solution (for example, a vaccine drug solution) may be packaged in advance in the prefilled syringe 2, and then the injection portion 21 of the prefilled syringe 2 is connected to the intermediate connection portion 121 of the suction nozzle assembly 1, and at this time, the injection needle 211 is inserted into the first chamber 1211 of the intermediate connection portion 121.

Further, the drug receiver may inhale first, and after inhaling the sound generating portion to make a sound, the drug receiver may push the push rod portion 24 to inject the liquid medicine into the first chamber 1211, the liquid medicine will flow to the second chamber 1212 and enter the nozzle assembly 122, the nozzle assembly 122 atomizes the liquid medicine, and the atomized liquid medicine is sucked away by the drug receiver through the liquid suction port 115.

By adopting the technical scheme, the fluid atomization delivery device provided by the invention has at least the following advantages:

(1) In the suction nozzle assembly, the sounding part is arranged, so that a drug administrator can judge whether a drug recipient inhales or not, and further drug can be administered at a proper time, and a good administration effect is finally obtained.

(2) In the suction nozzle assembly, the airflow channel is arranged in the suction nozzle part, and the sounding spring piece is arranged at the airflow channel, so that the suction nozzle assembly has a simple sounding structure, is easy to manufacture and has lower cost, and is particularly suitable for the suction nozzle assembly with an atomization function.

(3) In the suction nozzle assembly of the present invention, by configuring the sound emitting portion to generate sound only when the air flow having a flow rate of between 5L/min and 18L/min passes, it is possible to avoid adverse effects on the effects of the suction force being excessively large.

(4) In the suction nozzle assembly, the airflow guiding groove is arranged, so that the sound emitting part can emit sound more conveniently.

(5) In the fluid atomization delivery device, the pre-filling and sealing injector is arranged, so that the liquid medicine can be accurately quantified, an atomization cup is not required to be used in the atomization process, the atomized liquid medicine is not influenced by the ambient temperature, the humidity and the gravity, and the liquid medicine can be accurately dosed; meanwhile, the liquid atomization delivery device is used for drug delivery by arranging the pre-filled and sealed injector, the operation is simple, the cost is low, and compared with the existing atomization delivery device, the liquid atomization delivery device is low in cost; in addition, the fluid atomizing delivery device of the present invention can be disposable without risk of cross infection.

It should be understood that the above embodiments are exemplary and not intended to encompass all possible embodiments encompassed by the claims. Various modifications and changes may be made in the above embodiments without departing from the scope of the invention. Likewise, the individual technical features of the above embodiments may also be combined arbitrarily to form further embodiments of the invention which may not be explicitly described. Therefore, the above embodiments merely represent several embodiments of the present invention, and do not limit the scope of the present invention.

Claims (12)

1. A suction nozzle assembly (1), characterized in that the suction nozzle assembly (1) comprises:

a nozzle part (11) having a sound emitting part;

an atomizing assembly (12) connected with the suction nozzle part (11),

wherein when a user inhales using the suction nozzle portion (11), an air flow flows through the sound emitting portion to generate sound, and the sound emitting portion is configured to generate sound only when the air flow having a flow rate of between 5L/min and 18L/min passes.

2. The suction nozzle assembly (1) according to claim 1, wherein the suction nozzle portion (11) has an air flow passage (111) communicating an inner space and an outer space thereof, and the sound emitting portion is configured as a sound emitting dome (112) provided at the air flow passage (111).

3. The suction nozzle assembly (1) according to claim 2, wherein the sound emitting dome (112) extends from an end of the air flow channel (111) located inside the suction nozzle portion (11) away from the air flow channel (111), the sound emitting dome (112) being arranged inside the suction nozzle portion (11).

4. A nozzle assembly (1) according to claim 3, wherein the nozzle portion (11) comprises a housing portion (113) and a nozzle connection portion (114), the air flow channel (111) being formed between the housing portion (113) and the nozzle connection portion (114).

5. The suction nozzle assembly (1) according to claim 4, wherein the sound emitting dome (112) is provided extending in an axial direction of the suction nozzle portion (11); and/or

The airflow passage (111) is provided so as to extend in the axial direction of the nozzle portion (11).

6. The nozzle assembly (1) according to claim 4, wherein an air flow guide groove (1141) is formed on an outer peripheral surface of the nozzle connecting portion (114), the air flow guide groove (1141) being disposed opposite to the sounding spring (112) in a radial direction of the nozzle connecting portion (114).

7. The nozzle assembly (1) of claim 4, wherein there are a plurality of sound emitting clips (112), the plurality of sound emitting clips (112) being disposed around the nozzle connecting portion (114).

8. The nozzle assembly (1) according to claim 4, wherein the atomizing assembly (12) comprises an intermediate connection (121) and a nozzle assembly (122), the intermediate connection (121) comprising a first chamber (1211) and a second chamber (1212) in fluid communication,

-said first chamber (1211) is for introducing a fluid;

the nozzle assembly (122) is at least partially disposed in the second chamber (1212).

9. The suction nozzle assembly (1) according to claim 8, wherein the suction nozzle connecting portion (114) is connected with the intermediate connecting portion (121), and the nozzle assembly (122) is disposed in a receiving space defined by the suction nozzle connecting portion (114) and the intermediate connecting portion (121).

10. The nozzle assembly (1) according to claim 8, wherein the nozzle connection part (114) is sleeved on the intermediate connection part (121), and the nozzle connection part (114) is provided with a liquid suction port (115) for passing mist fluid.

11. The nozzle assembly (1) of claim 8, wherein the nozzle assembly (122) comprises a nozzle body (1221), the nozzle body (1221) having at least two atomizing channels (12211) formed therein;

wherein the extension lines of the spray ends of the at least two atomizing channels (12211) meet at a point, or

The at least two nebulization channels (12211) are arranged parallel to each other, the pore diameters of the at least two nebulization channels (12211) being different.

12. A fluid atomizing delivery device, comprising:

the suction nozzle assembly (1) of any one of claims 1 to 11;

a pre-filled syringe (2) for connecting the nozzle assembly (1) and injecting a fluid into the nozzle assembly (1).