CN105728214B - atomizer nozzle - Google Patents

Abstract

A nebulizer nozzle is provided, wherein a gasket, an atomizing module, a fixing element and an inner cover are installed between an outer cover and a medicine container, so that the piezoelectric material and micro-mesh holes of the atomizing module are completely separated by the fixing element and the gasket, thereby preventing the atomized liquid medicine molecules sprayed from the micro-mesh holes from being contaminated by heavy metals of the piezoelectric material; the present invention also reduces the number of components and simplifies the structure, thereby lowering the manufacturing cost and making cleaning and disinfection easier, while improving the structural strength and having a higher ability to resist external damage; on the other hand, through the streamlined structure, the sprayed aerosol can be further miniaturized to effectively screen out qualified aerosol particles for output to patients, thereby accurately controlling the amount of medicine prescribed by the doctor.

Description

atomizer nozzle

technical field

The invention relates to the medical application field of thoracic spray inhalation therapy, in particular to an atomizer which is simpler in structure, lower in manufacturing cost and higher in structural strength than similar existing products, and can further miniaturize aerosol particles nozzle.

Background technique

In the medical application of thoracic inhalation therapy, a nebulizer is used to atomize the liquid medicine into a gas-like state containing numerous fine particles (hereinafter referred to as "aerosol"), and the size of the aerosol particles must be less than 5 μm to be absorbed by the bronchi of the lungs .

In order to allow users to carry and use easily, the atomizer is usually made in a miniaturized manner; for example, the atomizer provided by Taiwan Patent Application No. 94112355, its structure includes an ultrasonic transducer, mainly An orifice sheet with a convex island is combined with a piezoelectric material, and is fixed with a fixing glue and the seat shell and the shell. The ultrasonic transducer is combined with a storage tank for placing liquid; it is based on ultrasonic The piezoelectric material of the transducer forms powerful ultrasonic vibrations and transmits them to the orifice sheet, and its convex island can enhance the concentration of ultrasonic energy, and can cut the liquid into extremely fine and uniform atomized molecules and spray them out through the orifice.

Since the aforementioned piezoelectric material contains heavy metals (such as lead) and is easily released in combination with water, the piezoelectric material contained in the aforementioned No. 94112355 patent is not covered, so a large amount of liquid medicine is sprayed forward and atomized When spraying molecules, a small amount of atomized molecules sprayed irregularly will accumulate on the piezoelectric material to form a liquid and be polluted by heavy metals. When the atomized molecules are sprayed out by subsequent ultrasonic oscillations, the newly sprayed atomized molecules will be mixed with heavy metals. The contaminated overlying fluid mixes and is inhaled by the user, causing chronic poisoning of the user's body.

In order to improve the problems existing in the aforementioned No. 94112355 patent case, Taiwan Patent No. I298648 provides "A Gain Improvement Structure of Ultrasonic Transducer of Atomizer", which structure includes a shell, several gaskets, a piezoelectric The material is combined with a nozzle hole sheet containing a nozzle hole seat and a housing to form an ultrasonic transducer and a housing groove with a convex intubation; its main feature is that there is a pad groove in front of the housing body, and the other There is a socket at the back; wherein, the shape of the pad groove conforms to the gasket; and a gasket groove and a perforation are arranged in the middle of the shell; wherein, the shape of the gasket groove conforms to the gasket; there is another gasket, It is a flexible and elastic frame shape; the periphery of the gasket is smaller than the periphery of the piezoelectric material; the inner periphery of the gasket is consistent with the inner periphery of the piezoelectric material; by the aforementioned components and structures, the seat shell and the outer shell A gasket is inserted into the pad grooves of the seat shell respectively, and then a piezoelectric material is combined with a nozzle hole sheet containing the nozzle hole seat to be placed on the pad groove of the seat shell, and then the shell combined with the gasket is embedded in the seat shell. , wherein, the shell and the gasket of the seat shell are clamped by the nozzle seat, and are completely blocked to form an ultrasonic transducer at the inner periphery of the piezoelectric material, and combined with an accommodating groove.

The technical feature disclosed in the aforementioned I298648 patent case is that it can block the sprayed aerosol from contacting the piezoelectric material, so as to prevent the aerosol from accumulating on the piezoelectric material and forming a liquid, which will be polluted by heavy metals. However, the I298648 patent case has a large number of components and a complex structure, resulting in high manufacturing costs, and the overall structural strength is also low, and it is easy to be damaged when it is accidentally dropped or impacted by an external force.

On the other hand, in the medical application of thoracic inhalation therapy, the sprayed aerosol particle size (Mass Median Aerodynamic Diameter, MMAD) must be less than 5 μm in order to be absorbed by the bronchi of the lungs. Since the particle size of the aerosol output is evenly distributed, effective thoracic inhalation therapy requires that more than 50% of the aerosol output must be particle molecules smaller than 5 μm; Qualified aerosol particles cannot be effectively screened out and exported to patients, that is, qualified and unqualified drug aerosols will be output together, and the molecular ratio of the qualified particles is unknown, so it is impossible to accurately control the doctor's order.

Looking at the aforementioned previous patents or other existing technologies related to nebulizers for thoracic cavity inhalation therapy, if it is not impossible to avoid the sprayed aerosol from contacting and accumulating in the piezoelectric material to cause heavy metal pollution, it is to avoid the aforementioned pollution and make the structure too large Complicated, the number of components is too large, resulting in high manufacturing costs; and the sprayed aerosol cannot effectively screen out qualified aerosol particles for output to patients, and thus cannot accurately control the dosage prescribed by the doctor.

The size of the aerosol particles generated by the aforementioned existing nebulizers needs to be accommodated in part by the mesh aperture size and shape of the micro-mesh, so that the size of the aerosol particles output by the spray module is random from 0.5 μm to 50 μm. distributed. However, the medical chest spray inhalation treatment requirement standard is that the aerosol particles smaller than 5 μm must account for more than 50% of the total aerosol output ratio; therefore, the aforementioned known prior patents have the following implications for the medical chest spray inhalation treatment shortcoming:

a. In order to obtain aerosol particles smaller than 5 μm, the mesh diameter of the micro-mesh must be less than or equal to 5 μm, but the production cost of this type of micro-mesh is extremely high, and the proportion of aerosol molecules output less than 5 μm may not meet above 50.

b. Compared with aerosol particles smaller than 5 μm that can be inhaled by patients, other aerosol particles larger than 5 μm cannot be absorbed by patients in the bronchi of the lungs, but are turned into liquid medicine and wasted. This phenomenon leads to the need to double the amount of medication prescribed by doctors to offset the output of large-particle aerosols that cannot be absorbed, which is a waste of medical resources; or the amount of medication that patients actually inhale into the chest cavity for treatment is not enough to treat the disease.

c. Aerosol particles larger than 5 μm that cannot be absorbed by patients partly dissipate in the air, and part are turned into liquid medicine and discarded, resulting in secondary environmental pollution of air and water sources contaminated by drugs.

Contents of the invention

One of the objectives of the present invention is to provide an atomizer nozzle with a simpler structure, lower manufacturing cost and higher structural strength than existing similar products.

Another object of the present invention is to provide an atomizer that can completely isolate the sprayed aerosol from the piezoelectric material disposed on the micro-mesh sheet, so as to prevent the aerosol from accumulating on the piezoelectric material and being polluted by heavy metals.

Another object of the present invention is to provide a simple filter structure, which can further filter out the sprayed aerosol molecules to finer qualified atomized gas particles (below about 5 μm), so that patients can It is easier to absorb the medicine, achieve the effective output of the doctor's prescription dosage, and reduce the waste of medicine.

The spray head of the atomizer provided by the present invention is characterized in that a gasket, an atomization module, a fixing element and an inner cover are installed between an outer cover and a medicine container, so that the piezoelectric material of the atomization module and the The micro-mesh is completely separated by the fixing element and the gasket, so as to prevent the atomized drug liquid molecules sprayed from the micro-mesh from being polluted by heavy metals of the piezoelectric material; the present invention also reduces the number of components and simplifies the structure, making the manufacturing cost lower Low, it is easier to clean and disinfect, and at the same time, the structural strength is improved, and the ability to resist external damage is higher; on the other hand, with the streamlined structure, the sprayed mist can be further refined to effectively filter out qualified mist The granules are output to the patient, so as to precisely control the dosage prescribed by the doctor.

The spray head of the atomizer of the present invention, its technical means include: a container for holding medicine, has a through hole; The axially protruding first flange, the gasket is combined with the medicine container, so that the first central hole axially corresponds to the through hole; an inner cover has a third central hole; a fixing element has a first Two central holes, the second end of the fixing element is provided with a first pressing portion and a second pressing portion which are respectively ring-shaped and concentrically arranged, and the fixing protrusion is combined with the inner cover so that the second center The hole axially corresponds to the third central hole; an atomization module has a micro-mesh and a piezoelectric material arranged at the first end of the micro-mesh, and a boss is formed in the center of the first end of the micro-mesh , the boss is provided with a plurality of micro-mesh holes, an annular depression is formed between the outer diameter of the boss and the inner diameter of the piezoelectric material, the atomization module is combined between the inner cover and the gasket, so that The annular recess and the second end corresponding to the annular recess are held against by the first pressing portion and the first flange respectively, and the piezoelectric material is held against by the second pressing portion, so that the piezoelectric material The material is separated from the boss, and the boss is arranged in a straight line with the first center hole, the second center hole and the third center hole; an outer cover has a spout, and the outer cover is combined with the container The medicine container, and then fix the inner cover between the outer cover and the gasket, and make the ejection port axially correspond to the third central hole.

Based on the easy combination of the drug-containing container and the outer cover, the present invention is provided with a plurality of fixing claws on the outer surface around the through hole of the drug-containing container, each fixing claw is provided with a fastening hole, and the outer surface of the outer cover is provided with multiple There is a fastening part, and the fastening part and the fastening hole are fitted and fixed by directly pressing the outer cover on the medicine-containing container, so as to complete the combination of the outer cover and the medicine-containing container.

In order to make the ejected aerosol more micronized to effectively screen qualified aerosol particles, the present invention further radially extends a filter on the inner surface of the outlet of the outer cover, and the filter has a third side facing the inner cover. The impact part of the central hole, whereby the aerosol sprayed from the third central hole of the inner cover can directly impact the impact part to be decomposed into finer aerosol molecules, and then sprayed out of the outer cover.

In a preferred embodiment, the surface of the impact part of the filter facing the third central hole of the present invention is a protruding arc, so that after the aerosol hits the arc at high speed, it can follow the arc. The arc spreads to the side and front and sprays out the outer cover.

Based on the convenience of combining the aforementioned gasket with the drug-containing container, an embodiment of the present invention is to set an annular convex portion at the second end of the gasket, and the outer surface of the through hole periphery of the drug-containing container is provided with an annular ring corresponding to the annular convex portion. The concave groove, through the combination of the annular convex part in the annular concave groove, the combination of the gasket and the medicine container is completed.

Based on the convenience of combining the aforementioned fixing elements with the inner cover, in one embodiment of the present invention, the first end of the fixing element is provided with a plurality of fixing protrusions, and the second end of the inner cover is provided with a plurality of fixing recesses. The part is combined in the fixing recess to complete the combination of the fixing element and the inner cover.

A preferred embodiment of the present invention is that the first pressing portion and the second pressing portion of the fixing element are integrally formed from the fixing element and form a concentric stage structure.

Description of drawings

Fig. 1 is a three-dimensional schematic diagram showing the appearance structure of the atomizer of the present invention;

Fig. 2 is a three-dimensional exploded view showing the combination relationship of the main components contained in the atomizer of the present invention;

Fig. 3 is a side plan sectional view showing the structure of the atomizer of the present invention;

Fig. 4 is the three-dimensional sectional view showing the gasket structure of the present invention;

Fig. 5 is a three-dimensional cross-sectional view showing the structure of the atomization module of the present invention;

FIG. 6 is a perspective sectional view showing the structure of the fixing element of the present invention;

Figure 7 is a perspective sectional view showing the structure of the inner cover of the present invention; and

FIG. 8 is a perspective cross-sectional view showing the structure of the outer cover of the present invention.

Wherein, the reference signs are explained as follows:

1 medicine container

10 medicine storage space

11 through holes

12 Fixing claws

121 Fastening hole

13 Annular groove

14 movable cover

2 spacers

21 First center hole

22 First flange

23 Annular convex part

3 atomization module

31 micro mesh

311 Boss

312 micromesh

32 Piezoelectric materials

321 central hole

33 Annular depression

34 protrusion

4 Fixing elements

41 Second center hole

42 Fixing protrusion

43 The first pressing part

44 Second pressing part

5 inner cover

51 Third center hole

52 Second flange

53 Fixing recess

6 cover

61 barrel

62 Discharge port

63 inner flange

64 filters

641 Impact part

65 Fastening part

L liquid

detailed description

The implementation of the present invention will be described in more detail below with reference to the figures and symbol numbers, so that those skilled in the art can implement it after studying this specification. Wherein, the first end mentioned below refers to the first direction in which the elements shown in each drawing are the same; the second end mentioned refers to the second direction in which the elements shown in each drawing are the same .

Fig. 1 shows the appearance structure of the atomizer spray head of the present invention, comprises a drug-containing container 1, and drug-containing container 1 is combined an outer cover 6 that has ejection port 62, during use operation, can spray liquid medicine gas from ejection port 62 fog.

Fig. 2 and Fig. 3 further show the combination relation and the combined structure of the main components included in the atomizer of the present invention; the main components include a medicine container 1, a gasket 2, an atomization module 3, and a fixing element 4. An inner cover 5 and an outer cover 6 .

Wherein, the medicine-containing container 1 is a container having a medicine-containing space 10 that can hold medicinal liquid L, and a movable cover 14 is movably arranged above it, and the movable cover 14 can be opened to add medicinal liquid into the medicinal-containing space 10, and then The movable cover 14 is closed; preferably, the movable cover 14 is connected to the side edge above the medicine-containing space 10 with a connecting element (such as a hinge, a flexible element, etc.), so that the movable cover 14 can be positioned relative to the medicine-containing container 1 Open or close, when the movable cover 14 is lifted, the medicinal liquid can be added into the medicine containing space 10, and the movable cover 14 is closed after adding. The side wall of the medicine container 1 is also provided with a through hole 11, and the outer surface of the medicine container 1 around the through hole 11 is provided with a plurality of fixing claws 12, and each fixing claw 12 is provided with a fastening hole 121 at an appropriate position close to the free end. ; The embodiment shown in Fig. 2 is that three fixed claws 12 are equiangularly arranged around the periphery of the through hole 11, so that the through hole 11 is located at the center position surrounded by the three fixed claws 12; of course, the fixed claw 12 The number of is not limited to three, and can also be set according to actual needs. The outer surface of the side wall of the medicine container 1 that is larger than the inner diameter of the through hole 11 is further formed with an annular concave groove 13 concentric with the through hole 11 .

As shown in Figure 4, the gasket 2 is made of soft materials, such as silica gel, rubber, etc.; preferably, the gasket 2 is made into a circle shape, and a first central hole is arranged in the center 21, the periphery of the first center hole 21 of the first end of the gasket 2 forms an axially protruding first flange 22, and the second end of the gasket 2 is provided with an annular convex portion 23, and the first flange 22 Both the annular convex portion 23 and the first center hole 21 are set at the same center; the outer width of the annular convex portion 23 is slightly larger than the inner width of the annular groove 13, so that the gasket 2 can be pressed into the ring by pressing the annular convex portion 23. In the groove 13, it is combined with the medicine container 1. After the gasket 2 is combined with the medicine container 1 , the first center hole 21 is axially corresponding to the through hole 11 of the medicine container 1 .

As shown in Figure 5, the structure of the atomization module 3 includes a micro mesh 31 and a piezoelectric material 32 arranged at the first end of the micro mesh 31, as shown in the figure, the micro mesh 31 A circular boss 311 protruding axially is formed in the center of the first end of the first end, and the boss 311 is provided with a plurality of micro-mesh holes 312; the piezoelectric material 32 is formed as a circular plate with a central hole 321, The piezoelectric material 32 is combined with the first end of the micro mesh 31, and then the boss 311 is concentrically located in the central hole 321, so that the outer diameter of the boss 311 and the inner diameter of the central hole 321 of the piezoelectric material 32 form a An annular depression 33 ; meanwhile, since the outer diameter of the piezoelectric material 32 is smaller than that of the micro-mesh 31 , a protrusion 34 is formed between the outer diameter of the micro-mesh 31 and the outer diameter of the piezoelectric material 32 .

As shown in Figure 6, the fixed element 4 is made of soft material (such as silica gel, rubber, etc.), and has a second central hole 41 around the first end of the fixed element 4 of the second central hole 41. The periphery is provided with a plurality of fixing protrusions 42; the second end of the fixing element 4 is provided with a first pressing portion 43 and a second pressing portion 44 which are respectively ring-shaped and concentrically arranged; preferably, the first The pressing portion 43 and the second pressing portion 44 are concentric hierarchical structures integrally formed from the fixing element 4, wherein the diameter of the first pressing portion 43 is smaller than the diameter of the second pressing portion 44, and the first pressing portion The catch portion 43 protrudes axially relative to the second detent portion 44 from the second end of the fixing element 4 .

As shown in Figure 7, the inner cover 5 is an element for cooperating with the medicine container 1 to install the aforementioned gasket 2, the atomization module 3 and the fixing element 4; the inner cover 5 has a third central hole 51; the inner cover The second end of the 5 is provided with a plurality of fixing recesses 53 for combining the fixing protrusions 42 of the fixing element 4 .

As shown in Figure 8, the embodiment of the outer cover 6 is a cylinder 61, the first end of which is a discharge port 62, and the inner surface of the discharge port 62 is provided with a rod-shaped filter 64 extending radially. The filter 64 has a free end corresponding to the center of the ejection port 62, and a side of the free end towards the second end is used as an impact portion 641. Preferably, the impact portion 641 is a protruding arc surface; The inner diameter of the second end is formed with an inner flange 63 .

Utilize above-mentioned main element of the present invention, its combination mode, is to press the annular protruding part 23 of gasket 2 into the annular groove 13 of drug-containing container 1 earlier, gasket 2 is fixed on drug-containing container 1; The fixing protrusion 42 of 4 is combined with the fixing recess 53 of the inner cover 5, and the second end of the micro mesh 31 of the atomization module 3 is placed on the first flange 21 of the gasket 2, and the inner cover 5 together with The fixing element 4 covers the second end of the gasket 2, and then the first pressing part 43 of the fixing element 4 is pressed against the annular recess 33 of the atomization module 3, so that the piezoelectric material 32 is separated from the boss 311 , and the second pressing part 44 is pressing on the surface of the second end of the piezoelectric material 32; thereby, the boss 311 is in a straight line with the first central hole 21, the second central hole 41 and the third central hole 51 arrangement. Finally, the outer cover 6 is combined with the drug-containing container 1, and the fastening parts 65 provided on the outer surface of the outer cover 6 are fastened to each fastening hole 121 of the drug-containing container 1 to be fixed, and then the inner cover 5 is fixed to the outer cover. 6 and the gasket 2, and make the ejection port 62 axially correspond to the third central hole 51 of the inner cover 5. At the same time, the gasket 2 and the fixing element 4 are both soft materials to be compressed, so that A sealing effect is produced to prevent the sprayed gas mist from penetrating and contacting the piezoelectric material 32 .

As shown in Figure 3, when the present invention is in use, the piezoelectric material 32 is actuated by passing an electric current to make the micro-mesh 31 vibrate at a high speed, because the medicinal liquid L passes through the through hole 11 and the first A central hole 21 is in contact with the micromesh hole 312, so the high-speed vibration will cause the medicinal liquid L to be vibrated out of the micromesh hole 312 and sprayed through the second central hole 41 and the third central hole 51, and the sprayed aerosol hits the After the impact part 641 of the filter 64, the aerosol after impact diffuses to the side and the front along the arc of the arc surface and sprays out the outer cover 6, so that the aerosol particles are further miniaturized to less than 5 μm, so as to facilitate chest inhalation medical treatment.

The above descriptions are only used to explain the preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Therefore, any modification or change related to the present invention made under the same spirit of the invention should still be included in the scope of protection intended by the present invention.

Claims (7)

1. An atomizer nozzle, is characterized in that, comprises: A medicine container with a through hole; A spacer has a first central hole, the periphery of the first central hole at the first end of the spacer forms an axially protruding first flange, the spacer is combined with the medicine container, so that the first The central hole axially corresponds to the through hole; an inner cover with a third central hole; A fixing element has a second central hole, and the second end of the fixing element is provided with a first pressing portion and a second pressing portion which are ring-shaped and concentric with each other, and the fixing protrusion is combined with the inner cover , so that the second central hole axially corresponds to the third central hole; An atomization module has a micro-mesh and a piezoelectric material arranged at the first end of the micro-mesh, a boss is formed in the center of the first end of the micro-mesh, and the boss is provided with a plurality of micro-mesh hole, an annular recess is formed between the outer diameter of the boss and the inner diameter of the piezoelectric material, and the atomization module is combined between the inner cover and the gasket, so that the annular recess and the corresponding annular recess The second end of the first pressing part and the first flange are respectively pressed, and the piezoelectric material is pressed by the second pressing part, so that the piezoelectric material is separated from the boss, and The boss is arranged in a straight line with the first central hole, the second central hole and the third central hole; An outer cover has a spout, the outer cover is combined with the medicine container, and then the inner cover is fixed between the outer cover and the gasket, and the spout is axially corresponding to the third central hole. 2. The atomizer spray head as claimed in claim 1, characterized in that, the outer surface of the medicine container around the through hole is provided with a plurality of fixing claws, each fixing claw is provided with a fastening hole, and the outer cover of the outer cover The surface is provided with a plurality of fastening parts, and the fastening parts and the fastening holes are mutually fitted and fixed. 3 . The atomizer nozzle as claimed in claim 2 , wherein a screen is radially extended on the inner surface of the outlet of the outer cover, and the screen has an impact portion facing the third central hole. 4 . 4 . The atomizer nozzle as claimed in claim 3 , wherein a surface of the impact portion of the filter facing the third central hole is a protruding arc surface. 5. The atomizer spray head according to claim 1, characterized in that, the second end of the gasket is provided with an annular protrusion, and the outer surface of the medicine container around the through hole is provided with an annular ring corresponding to the annular protrusion. A concave groove, the annular convex part is combined in the annular concave groove. 6. The atomizer nozzle as claimed in claim 1, wherein the first end of the fixing element is provided with a plurality of fixing protrusions, the second end of the inner cover is provided with a plurality of fixing recesses, and the fixing protrusions The part is combined with the fixing recess of the inner cover. 7 . The atomizer spray head as claimed in claim 1 , wherein the first pressing portion and the second pressing portion of the fixing element are concentric hierarchical structures formed integrally from the fixing element.