Nozzle module and atomization device

Abstract

The utility model provides a nozzle module and an atomization device.The nozzle module comprises a nozzle, a pressing and fixing piece and a locking piece, the pressing and fixing piece is provided with a center hole, a spraying opening of the nozzle corresponds to the center hole, the nozzle module further comprises an adjusting piece, and the adjusting piece is fixed to an upper cover in a pressing connection mode through the pressing and fixing piece to achieve detachable connection; the adjusting piece is provided with a through hole, the diameter of the through hole is larger than that of the nozzle, and the nozzle is prevented from being blocked to affect medicine atomization spraying. By arranging the adjusting part, medicine residues are achieved, then the spraying amount of medicine is adjusted, it is ensured that a patient can obtain a stable and proper medicine dosage every time, due to the arrangement of the adjusting part, the medicine spraying amount is adjusted, meanwhile, an existing nozzle structure does not need to be changed on a large scale, and the production cost is saved; the adjusting part is detachably connected into the atomization device, use is flexible and reliable, the atomization degree and the spraying weight of the medicine are adjusted by changing the size and the shape of the through hole in the adjusting part, and different application requirements can be met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a nozzle module and an atomization device. BACKGROUND

[0002] With the increasingly serious environmental pollution problem, the incidence of oral and respiratory diseases shows a significant upward trend. Inhalation administration, as an advanced treatment method, is favored for its painless, rapid and efficient characteristics. The nebulizer used for inhalation administration mainly converts liquid preparations such as drugs, nutritional supplements or nicotine solutions into small particles through atomization technology, which is convenient for patients to inhale into the body, thereby maximizing the treatment effect.

[0003] The nozzle, as an indispensable key component in the atomization device, is located at the front end of the device and directly contacts the human body, and is responsible for accurately delivering the drug to the target area. However, in actual application, the effective dose of each spray of the nozzle often fluctuates, and too much or too little dose may adversely affect the treatment effect. Research has found that the dose of the nozzle spray not only depends on the design and quality of the nozzle itself, but also is significantly affected by other components that closely cooperate with it. These cooperating components include but are not limited to pump units, drug liquid chambers, and related sealing structures, etc.

[0004] Therefore, in order to improve the treatment effect of inhalation administration and ensure that patients can obtain stable and appropriate drug dose each time, we need to optimize and improve the nozzle and its cooperating components. CONTENT OF THE INVENTION

[0005] The present application discloses a nozzle module and an atomization device, which controls the residual amount of the drug by setting an adjusting piece, thereby controlling the effective dose of the drug sprayed by the nozzle, so that the patient can obtain stable and appropriate drug dose.

[0006] In a first aspect, the present application provides a nozzle module, which comprises a nozzle, a pressing piece and a locking piece, the pressing piece is provided with a center hole, the nozzle nozzle is located in the center hole, the nozzle module further comprises an adjusting piece, the adjusting piece is fixed by pressing the pressing piece and the upper cover to realize detachable connection; the adjusting piece is provided with a through hole, the diameter of the through hole is greater than the diameter of the nozzle nozzle to spray the drug mist.

[0007] In a feasible implementation manner, the through hole is conical, the through hole is tapered to the end close to the nozzle, and the taper angle of the conical is 110°-125°.

[0008] In a feasible implementation manner, the nozzle is provided with a boss, the nozzle nozzle is arranged in the boss, and the diameter of the end of the through hole close to the nozzle is greater than the outer diameter of the boss.

[0009] In an implementable manner, the adjusting member is provided with a bent surface at one end away from the nozzle for crimping fixation.

[0010] In an implementable manner, a liquid absorbing sheet is further arranged between the outer circumferential surface of the boss and the inner tapered surface of the through hole.

[0011] In an implementable manner, the through hole is provided with a straight pipe section at one end close to the crimping member, and a transition curved surface is arranged between the straight pipe section and the tapered surface of the taper for adjusting the atomization angle, and the inner diameter of the straight pipe section is greater than the outer diameter of the boss.

[0012] In an implementable manner, the transition curved surface is an arc surface, and the radius of curvature of the arc surface is 0.2mm-0.5mm.

[0013] In an implementable manner, the inner surface of the adjusting member is provided with a flow guide groove for guiding the residual liquid to the liquid absorbing sheet.

[0014] In an implementable manner, the adjusting member is made of medical PVC material.

[0015] In a second aspect, the application discloses a nebulization device using the nozzle module.

[0016] The nozzle module and the nebulization device disclosed in the application comprise a nozzle, a crimping member and a locking member. By arranging an adjusting member between the crimping member and the locking member, the residual liquid is adjusted, and the ejection amount of the liquid medicine is adjusted, so that the patient can obtain a stable and appropriate dose of liquid medicine every time. In the nozzle module provided in the application, the adjusting member is connected in a detachable manner, and no large-scale modification is needed for the existing nozzle module structure. Only the adjusting member suitable for the user's ejection amount (i.e. the dose of liquid medicine) needs to be selected, and the nebulization device can be reused by simple assembly, thereby reducing the cost of the device. The adjusting member provides diversified specifications, and each specification of the adjusting member is equipped with a through hole of different size and shape. These differentiated through holes can effectively adjust the atomization degree and ejection weight of the liquid medicine, thereby flexibly adapting to the specific needs of various application scenarios. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the application, the drawings needed in the embodiments will be briefly introduced below. Obviously, other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0018] Figure 1 is a structural schematic diagram of the nebulization device provided in the embodiments of the application;

[0019] Figure 2 is a schematic diagram of a nozzle module structure provided by an embodiment of the present application;

[0020] Figure 3 is a schematic diagram of an adjusting member structure provided by an embodiment of the present application;

[0021] Figure 4 is a schematic diagram of another adjusting member structure provided by an embodiment of the present application;

[0022] Figure 5 is a schematic diagram of a nozzle and a liquid absorbing sheet provided by an embodiment of the present application;

[0023] Figure 6 is a schematic diagram of a nozzle, an adjusting member and a liquid absorbing sheet provided by an embodiment of the present application;

[0024] Figure 7 is a schematic diagram of a transition curved surface structure in an adjusting member provided by an embodiment of the present application;

[0025] Figure 8 is a schematic diagram of a transition curved surface structure in an adjusting member provided by an embodiment of the present application; Figure 2 is an enlarged schematic diagram of B in FIG. 6.

[0026] Explanation of Reference Signs:

[0027] 1-nozzle; 11-boss; 111-nozzle; 2-pressing member; 21-central hole; 3-locking member; 4-adjusting member; 41-through hole; 42-straight pipe section; 43-transition curved surface; 44-bent surface; 5-liquid absorbing sheet; 6-drug channel; 7-pumping assembly. DETAILED DESCRIPTION

[0028] In order to make the person skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should fall within the scope of protection of the present application.

[0029] With the diversification of life and the aggravation of environmental pollution, respiratory diseases have become common diseases nowadays, such as asthma, chronic obstructive pulmonary disease, etc., and the number of patients is still increasing. Generally, chronic respiratory diseases need long-term treatment, and the choice of treatment method is crucial. At present, inhalation administration is the most simple and effective administration route for treating respiratory diseases such as asthma and chronic pulmonary obstruction.

[0030] Inhalation administration is achieved by a nebulizer capable of generating fine droplet spray, in use, the drug solution in the nebulizer is first pumped from the storage container into a pressure chamber through a cannula with an integrated valve, and from there, by means of high pressure, it is converted and atomized into an inhalable aerosol inside the lungs through a nozzle, in the process, the atomization of the drug solution into a fine droplet spray is mainly achieved by the atomizing nozzle structure arranged in the nozzle, and then sprayed into the oral cavity. In practical application, the effective dose of each spray of the nozzle often fluctuates, and too much or too little dose may adversely affect the treatment effect. Research has found that the dose of the nozzle spray does not only depend on the design and quality of the nozzle itself, but also is significantly affected by other components that closely cooperate with it. The present application provides a nozzle module and an atomizing device, by controlling the residual amount of the drug, the effective dose of the drug sprayed by the nozzle (i.e. the spray weight of the atomizing device) is controlled, so that the patient can obtain a stable and appropriate dose of the drug.

[0031] The specific structure of the nozzle module and the atomizing device provided by the present application will be described in detail below with reference to the accompanying drawings.

[0032] Referring to Figure 1 , Figure 2 and Figure 8 , the present application discloses a nozzle module, which comprises a nozzle 1, a pressure fastener 2, a locking piece 3 and an adjusting piece 4, wherein the adjusting piece 4 is pressed between the pressure fastener 2 and the locking piece 3 to achieve detachable connection, and the pressure fastener 2 and the locking piece 3 are connected by threads, when it is necessary to replace the adjusting piece 4, the locking piece 3 is screwed, the locking piece 3 is taken off from the pressure fastener 2, the old adjusting piece 4 is taken out, then the new adjusting piece 4 is placed on the pressure fastener 2, and finally the locking piece 3 is tightened. Through this detachable connection mode, the replacement or maintenance of the adjusting piece 4 can be completed without disassembling the entire nozzle module, which is flexible and convenient to operate. The adjusting piece 4 in the present application has multiple specifications, and each specification of the adjusting piece 4 is equipped with a through hole 41 of different size and shape, so as to effectively adjust the atomization degree and spray weight of the drug solution, so that the patient can obtain a stable and appropriate dose of the drug, and flexibly adapt to the specific needs of various application scenarios.

[0033] Continuing to refer to Figure 2 , the pressure fastener 2 is provided with a center hole 21, and the adjusting piece 4 is provided with a through hole 41, when the adjusting piece 4 is installed, the center of the through hole 41 should be aligned with the center of the center hole 21, so as to ensure that the drug can be smoothly atomized and sprayed out. Specifically, the nozzle 1 is installed in the center hole 21 of the pressure fastener 2, and when inhalation administration is performed, the drug is sprayed out of the nozzle 1, therefore, in order to ensure the continuous, smooth and stable output of atomization, the diameter of the through hole 41 should be greater than the diameter of the nozzle 111, so as to avoid that the structure of the through hole 41 causes obstruction to the nozzle 111.

[0034] Referring toFigure 3 As shown, in some embodiments, the through hole 41 is provided as a tapered structure, the through hole 41 tapers from the side close to the locking piece 3 to the end of the pressure piece 2, that is, the through hole 41 is an inverted tapered structure, and the taper angle a of the taper is in the range of 110°-125°. In actual use, this tapered structure can produce a certain blocking effect on the atomized drug, so as to make the drug remain on the taper surface, thereby realizing the control of the drug residual amount. It can be understood that the size of the taper angle a is closely related to the blocking effect of the taper surface on the atomized drug, that is, the smaller the angle of the taper angle a, the stronger the blocking effect of the taper surface on the atomized drug, and correspondingly, the more the drug residual amount. In order to meet the different control requirements of the drug residual amount, the adjusting piece 4 can be provided in multiple specifications, and the size of the taper angle a of each specification of the adjusting piece 4 is different, and by replacing the adjusting piece 4 of different specifications, the control of the drug residual amount can be realized. The following table is the corresponding spray weight of the atomization device when the adjusting piece of different specifications is installed, that is, when the taper angle a is different, the effective dose of the drug sprayed by the nozzle, wherein the taper angle a is the vertex angle of the adjusting piece 4, the spray weight refers to the effective dose of the drug sprayed by the atomization device, and the test data is as follows:

[0035]

[0036] As can be seen from the above table, when the taper angle a of the adjusting piece 4 is 125°, the spray weight of the atomization device is 13.7-14.5 mg, when the taper angle a of the adjusting piece 4 is 120°, the spray weight of the atomization device is 12.9-14 mg, when the taper angle a of the adjusting piece 4 is 115°, the spray weight of the atomization device is 12.5-13.5 mg, and when the taper angle a of the adjusting piece 4 is 115°, the spray weight of the atomization device is 12-13 mg.

[0037] Continuing to refer to Figure 3 As shown, the hole wall of the through hole 41 is provided as a non-uniform thickness, specifically, the end close to the pressure piece 2 is relatively thin, and the end close to the locking piece 3 is relatively thick. As an exemplary, when it is necessary to adjust the size of a, the thickness distribution of the hole wall of the through hole 41 can be adjusted to achieve this, specifically, when the thickness of the hole wall close to the locking piece 3 is increased, if this increase is greater than the increase of the thickness of the hole wall close to the pressure piece 2, then the taper angle a will be correspondingly reduced, thereby realizing the adjustment of the taper angle.

[0038] Referring to Figure 5In some embodiments, the structure of the nozzle 1 is optimized, and in particular, a boss 11 is arranged on the top surface of the nozzle 1, and the nozzle outlet 111 of the nozzle 1 is arranged in the boss 11, and the diameter of the through hole 41 is greater than the diameter of the boss 11, and there is a gap between the inner tapered surface of the through hole 41 and the outer peripheral surface of the boss 11. When the adjusting member 4 causes the drug to remain, the remaining drug flows along the inner tapered surface of the through hole 41 to the gap for storage, and the arrangement of the boss 11 can effectively prevent the backflow of the remaining drug liquid from the nozzle outlet 111 of the nozzle 1, thereby avoiding contamination of the drug liquid that has not been sprayed in the atomization device.

[0039] With reference to the foregoing Figure 5 In some embodiments, a liquid absorbing sheet 5 is arranged in the gap between the inner tapered surface of the through hole 41 and the outer peripheral surface of the boss 11, for absorbing the remaining drug, improving the cleaning degree and use efficiency of the equipment, further preventing the backflow of the drug, and ensuring the purity of the drug inside the atomization device. In some other embodiments, a flow guide groove can also be arranged on the inner tapered surface of the through hole 41, to provide a smooth flow path for the remaining drug, facilitating the flow of the remaining drug liquid along the flow guide groove into the gap.

[0040] In some embodiments, the end of the adjusting member 4 away from the nozzle 1 is provided with a bent surface 44, which increases the contact area of the adjusting member 4 with the pressing member 2 and the locking member 3 during installation, thereby improving the firmness and reliability of the installation structure.

[0041] With reference to the foregoing Figure 4 In some embodiments, the end of the adjusting member 4 away from the nozzle 1 is provided with a bent surface 44, which increases the contact area of the adjusting member 4 with the pressing member 2 and the locking member 3 during installation, thereby improving the firmness and reliability of the installation structure.

[0042] With reference to the foregoing Figure 6 When the adjusting member 4 is not provided with the straight pipe section 42, the diameter of the through hole 41 of the adjusting member 4 close to the pressing member 21 is smaller than the diameter of the center hole 21, and at this time, there is a gap L between the outer surface of the adjusting member 4 and the inner surface of the center hole 21, and because the liquid absorbing sheet 5 is arranged on the inner surface of the through hole 41, the gap L is not covered by the liquid absorbing sheet 5, resulting in a decrease in the area of the liquid absorbing sheet 5 and an insufficient amount of liquid absorption. In addition, the existence of the gap L causes a waste of space. After the straight pipe section 42 is arranged, the outer surface of the straight pipe section 42 is in contact with the edge line of the center hole 21, i.e., the value of the gap L is zero, thereby solving the problems of small area of the liquid absorbing sheet 5 and insufficient amount of liquid absorption, and avoiding the waste of space. The height of the straight pipe section 42 is determined according to the diameter of the nozzle outlet 111 and the through hole 41, and should ensure smooth spraying of the atomized drug.

[0043] With reference to the foregoing Figure 7As shown, the transition curved surface 43 with a radius of curvature R of 0.2mm-0.5mm is arranged at the joint of the straight pipe section 42 and the tapered surface of the through hole 41, which forms a smooth transition between the tapered surface and the straight pipe section 42, preventing vortexes from affecting the atomization effect.

[0044] The atomization device disclosed in the present application uses high-speed flowing compressed air to break the medicine into particles. The medicine and compressed air are mixed inside the nozzle structure. The medicine is thus formed into a series of continuous droplets under pressure through the nozzle outlet to form a fine distribution of inhalable pulmonary spray. The spray torch shape ejected from the nozzle is a hollow or solid cone, and the cone angle of the cone is the atomization angle. The atomization device uses the nozzle module provided in the present application. When the adjusting member 4 is arranged between the compression member 2 and the locking member 3, the spray is ejected from the through hole 41 of the adjusting member 4. By controlling the cone angle of the adjusting member 4, the spray can be blocked by the tapered surface of the through hole 41, thereby controlling the drug residue.

[0045] The adjusting member 4 disclosed in the present application is made of medical PVC material, which has good biocompatibility, meaning that it will not cause adverse reactions or rejection when in contact with human tissues or body fluids. It can be customized according to specific needs through processes such as injection molding and extrusion, meeting different medical application needs and improving the performance and safety of medical equipment.

[0046] The present application also discloses an atomization device using the above-mentioned nozzle module. In use, the upper cover of the atomization device is opened, the locking member 3 is screwed, the locking member 3 is removed, the adjusting member 4 is placed in the center hole 21 of the compression member 2, and then the locking member 3 is tightened. When inhaling the medicine, the pumping assembly 7 of the atomization device sends the medicine stored in the storage container through the medicine channel 6 to the nozzle 1. The spray torch after being atomized by the nozzle 1 is controlled for residue by the adjusting member 4. The residual medicine flows into the gap between the inner tapered surface of the through hole 41 and the outer peripheral surface of the boss 11 through the flow guide groove arranged on the adjusting member 4, and is absorbed by the liquid absorbing sheet 5 arranged therein. The rest of the liquid medicine is sprayed to the affected area, so that the patient can obtain a stable and appropriate dose of medicine.

[0047] It is easy to understand that those skilled in the art can combine, split, recombine, etc. the embodiments of the present application on the basis of the several embodiments provided in the present application to obtain other embodiments, which do not exceed the protection scope of the present application.

[0048] The above specific embodiments have further detailed the purpose, technical solutions and beneficial effects of the embodiments of the present application. It should be understood that the above is only a specific embodiment of the present application and is not used to limit the protection scope of the embodiments of the present application. Any modification, equivalent replacement, improvement, etc. made on the basis of the technical solutions of the embodiments of the present application should be included in the protection scope of the embodiments of the present application.

Claims

1. A nozzle module comprising a nozzle (1), a presser (2) and a locking member (3), said presser (2) being provided with a central hole (21), the spout (111) of said nozzle (1) being located in said central hole (21), characterized in that, Further comprising an adjusting piece (4) which is press-fitted and fixed by the press-fitting piece (2) and the locking piece (3); the adjusting piece (4) is provided with a through hole (41) with a diameter larger than that of the nozzle (1) for atomizing and spraying the liquid medicine.

2. The nozzle module of claim 1, wherein, The through hole (41) is tapered, and the diameter of the through hole (41) gradually decreases towards the end close to the nozzle (1), and the taper angle of the taper is 110°-125°.

3. The nozzle module of claim 2, wherein, The nozzle (1) is provided with a boss (11), the nozzle (1) is provided with a nozzle (111) in the boss (11), and the diameter of the end of the through hole (41) close to the nozzle (1) is larger than that of the boss (11).

4. The nozzle module of claim 2, wherein, The end of the adjusting piece (4) away from the nozzle (1) is provided with a bent surface (44) for press-fitting.

5. The nozzle module of claim 3, wherein, Further comprising a liquid absorbing piece (5) arranged between the outer circumferential surface of the boss (11) and the inner tapered surface of the through hole (41).

6. The nozzle module of claim 3, wherein, The end of the through hole (41) close to the press-fitting piece (2) is provided with a straight pipe section (42), and a transition curved surface (43) is arranged between the straight pipe section (42) and the inner tapered surface of the through hole (41) to adjust the atomizing angle, and the inner diameter of the straight pipe section (42) is larger than the outer diameter of the boss (11).

7. The nozzle module of claim 6, wherein, The transition curved surface (43) is an arc surface, and the curvature radius of the arc surface is 0.2mm-0.5mm.

8. The nozzle module of claim 5, wherein, The inner surface of the adjusting piece (4) is provided with a flow guide groove for guiding the residual liquid medicine to the liquid absorbing piece (5).

9. The nozzle die set of claim 1, wherein, The adjusting piece (4) is made of medical PVC material.

10. An atomising device characterised in that, The nozzle module as claimed in any one of claims 1-9 is adopted.

Images