CN102601008A - Liquid atomization jet drug delivery device - Google Patents

Abstract

The present invention provides a liquid atomized spray drug delivery device, at least comprising: a first pump for supplying or drawing a fluid; an atomization module connected with the first pump and comprising an inlet channel, an outlet channel and a plurality of spray holes for atomizing and spraying out part of the fluid; the liquid storage unit, the first pump and the atomization module form a closed fluid loop, so that the fluid continuously contacts the plurality of spray holes and a plurality of bubbles generated in the atomization process are discharged out of the atomization module; and the control circuit board is connected with the first pump and the atomization module and used for controlling the output frequency of the first pump and the spraying time of the atomization module.

Description

Liquid atomization jet drug delivery device

technical field

The invention relates to a drug delivery device, in particular to a liquid atomization injection drug delivery device.

Background technique

The nebulizer is an electronic device that converts liquid into a large number of liquid droplets. It uses the principle that the contact surface area of liquid droplets is larger than that of liquid. It is widely used in various fields, such as: medical treatment, beauty, environmental humidification and indoor incense. For heat dissipation of electronic components, etc., the atomizers on the market today are mainly divided into ultrasonic type and actuated type.

Please refer to FIG. 1 , which is a cross-sectional view of a known actuated atomizer. The known actuated atomizer 1 mainly includes a cavity 10, an atomizing sheet 11, and an actuating element 12, wherein the cavity 10 has an inlet channel 101 and an accommodating groove 102, and a fluid 103 is input from the inlet channel 101 and accommodated in the accommodating groove 102, and the atomizing sheet 11 has a plurality of spray holes 111 corresponding to the accommodating groove 102 Setting, wherein, the actuation method of the known actuated atomizer 1 makes the fluid 103 contact the atomizing sheet 11 through the action of gravity, and then drives the actuating element 12 to vibrate through the action of a voltage, so that the fluid 103 is driven by multiple The orifices 111 form atomized liquid droplets 1031 .

Please refer to FIG. 1 again. It is known that the actuated atomizer 1 must rely on gravity to make the fluid 103 sink and contact the nozzle hole 111 of the atomizing sheet 11, so that the fluid 103 can be atomized to form droplets. 1031, in this way, the atomization direction of the known actuated atomizer 1 is limited, so that the known actuated atomizer 1 can only be placed in a single direction. In addition, when the inner depth of the accommodating groove 102 of the cavity 10 is too deep, or the aperture diameter of the nozzle hole 111 of the atomizing sheet 11 is too large, the fluid 103 is easy to accumulate on the surface of the nozzle hole 111, causing the nozzle hole 111 to be blocked. And the formation of bad atomization phenomenon. Furthermore, when the fluid 103 is atomized into liquid droplets 1031, air will enter the cavity 10 from the multiple nozzle holes 111 of the atomizing sheet 11 at the same time, and air bubbles 104 will be formed above the accommodating tank 102, which will also cause the known The atomization phenomenon of the actuated atomizer 1 is unstable.

Therefore, how to develop an atomization system that can improve the deficiencies of the above-mentioned known technologies and apply it to a drug delivery device is an urgent research topic of the present invention.

Contents of the invention

The object of the present invention is to provide a liquid atomization injection drug delivery device, which mainly forms a closed fluid circuit through the series connection of the first pump, the atomization module, the second pump and the liquid storage unit, so as to solve the problem of the known actuated mist injection device. The atomizer must rely on the action of gravity to atomize and eject the fluid, which will limit the atomization direction and easily form air bubbles in the storage tank, resulting in unstable atomization.

Another object of the present invention is to provide a liquid atomization injection drug delivery device, by adjusting the set value of the pump drive IC and the atomization module drive IC on the control circuit board, the output frequency of the pump and the output frequency of the atomization module can be controlled. The ejection time can achieve the atomized ejection of quantitative liquid.

In order to achieve the above-mentioned purpose, a broad implementation aspect of the present invention is to provide a liquid atomization injection drug delivery device, which at least includes: a first pump for supplying or drawing a fluid; an atomization module, and The first pump is connected and includes an inlet passage, an outlet passage and a plurality of spray holes for atomizing and ejecting part of the fluid; a liquid storage unit forms a closed circuit with the first pump and the atomization module a fluid circuit, so that the fluid continuously contacts the plurality of nozzle holes and discharges air bubbles; and a control circuit board, connected with the first pump and the atomization module, for controlling the output frequency of the first pump and the atomization The ejection time of the module.

In order to achieve the above purpose, another broad implementation aspect of the present invention is to provide a liquid atomization injection drug delivery device, which at least includes: a first pump, used to supply or draw a fluid; an atomization module, and the The first pump is connected and includes a cavity, an inlet passage, an outlet passage and a plurality of spray holes for spraying part of the fluid; a porous absorbent material is arranged in the cavity for Absorb the fluid; a liquid storage unit forms a closed fluid circuit with the first pump and the atomization module, so that the fluid continuously contacts the plurality of nozzle holes and discharges air bubbles; and a control circuit board, and the first The pump is connected with the atomization module to control the output frequency of the first pump and the spraying time of the atomization module.

Description of drawings

Figure 1: It is a cross-sectional view of a known actuated nebulizer.

Fig. 2: It is a schematic structural diagram of the atomization system in a preferred embodiment of the present invention.

Fig. 3A: It is a schematic diagram of the exploded structure of the atomization module shown in Fig. 2 .

FIG. 3B : It is a schematic diagram of the back structure of the cover shown in FIG. 3A .

FIG. 3C : It is a schematic diagram of the back structure of the cavity described in FIG. 3A .

FIG. 4A : It is a schematic cross-sectional view of removing air bubbles of the atomization module shown in FIG. 3A .

FIG. 4B : It is a schematic cross-sectional view of setting a porous absorbent material in the accommodating tank of FIG. 4A .

Fig. 5A: It is a schematic view of the front structure of the liquid atomization injection drug delivery device according to the preferred embodiment of the present invention.

Fig. 5B: It is a perspective view of the back structure of the liquid atomization injection drug delivery device according to the preferred embodiment of the present invention.

Description of main component symbols:

Actuated Nebulizers: 1; Chambers: 10, 224

Entryway: 101, 221; Storage Tank: 102, 2241

Fluid: 103; Droplet: 1031, 30

Bubbles: 104, 31; Atomizer: 11

Orifice: 111, 2251; Actuating element: 12, 226

Atomization system: 2; First pump: 21

Exit: 211, 232; Entrance: 212, 231

Atomization modules: 22; circuit units: 220

Outlet channel: 222; cover body: 223

First Exit: 2231; First Entrance: 2232

Groove: 2233, 2234, 2244, 2245, 2246

First through hole: 2242; Second through hole: 2243

Atomization unit: 225; openings: 2261, 2271, 411

Base: 227; 2nd Pump: 23

Sealing elements: 228, 228a, 228b, 228c, 228d, 229

Liquid storage unit: 24; Porous absorbent material: 32

Liquid atomization jet drug delivery device: 4 Body: 41

Grip: 42; Switch element: 421

Control circuit board: 43; pump drive integrated circuit: 431

Atomization module drive integrated circuit: 432

Detailed ways

Some typical embodiments embodying the features and advantages of the present invention will be described in detail in the description in the following paragraphs. It should be understood that the present invention can have various changes in different aspects, all of which do not depart from the scope of the present invention, and the description and drawings therein are used as illustrations in nature, not to limit the present invention .

The present invention provides a liquid atomization injection drug delivery device, which mainly includes an atomization system and a control circuit board. The atomization system includes an atomization module, one or two pump units and a liquid storage unit, wherein the pump unit is used for The supply or absorption of liquid and the elimination of air bubbles enable the atomization module to spray and atomize liquid continuously and stably, which can avoid the unstable operation caused by the accumulation of water droplets at the end of the nozzle hole and the accumulation of air bubbles at the front of the nozzle hole.

中循环流动。Please refer to FIG. 2 , which is a schematic structural diagram of an atomization system in a preferred embodiment of the present invention. As shown in the figure, the atomization system 2 of this embodiment mainly includes a first pump 21, an atomization module 22 and a second pump 23, wherein the atomization module 22 has an inlet channel 221 and an outlet channel 222, and The first pump 21 and the second pump 23 can be a piezoelectric pump and adopt the form of one in and one out, that is, have a single inlet and a single outlet respectively. The outlet 211 of the first pump 21 and the inlet 231 of the second pump 23 are respectively connected with the inlet channel 221 and the outlet channel 222 of the atomization module 22, while the inlet 212 of the first pump 21 and the outlet 232 of the second pump 23 are connected with A liquid storage unit 24 (as shown in FIG. 5B ) is connected so that the first pump 21, the atomization module 22, the second pump 23 and the liquid storage unit 24 are connected in series to form a closed fluid circuit, so that the fluid can flow in a closed fluid circuit

medium circulation.

Of course, the series connection of the aforementioned first pump 21, atomization module 22, and second pump 23 is not limited to the linear series connection shown in FIG. For example, in FIG. 5B , the first pump 21 , the atomization module 22 , the second pump 23 and the liquid storage unit 24 are roughly arranged in a rectangular shape.

In the embodiment shown in FIG. 2, the inlet channel 221 and the outlet channel 222 of the atomization module 22 are respectively connected to a pump, wherein the first pump 21 connected to the inlet channel 221 is used as a supply pump for supplying fluid to the atomizer. module 22, and the second pump 23 connected to the outlet channel 222 is used as a suction pump for sucking liquid and sucking out air bubbles. In one embodiment, the atomization module 22 is only connected to a pumping pump at its outlet channel 222 for pumping up liquid and sucking out air bubbles. Furthermore, in another embodiment, the atomization module 22 is only connected to a supply pump at its inlet channel 221 for supplying fluid to the atomization module 22 . Regardless of whether the atomization module 22 is only connected to a supply pump or a suction pump, or both pumps are connected at the same time, the pump flow rate can be set at an appropriate value through the configuration of the fluid pipeline to achieve continuous and stable atomization and liquid spraying.

Please refer to FIG. 3A, which is a schematic diagram of the exploded structure of the atomization module shown in FIG. The atomization unit 225, an actuating element 226, a base 227, and a plurality of sealing elements 228 and 229, the atomizing module 22 mainly uses the circuit unit 220, the cover body 223, the sealing element 228, the cavity 224, and the sealing element 229 in sequence. , the atomizing unit 225 , the actuating element 225 and the base 227 are stacked correspondingly to complete the assembly.

Please refer to FIG. 3B together with FIG. 3A , wherein FIG. 3B is a schematic diagram of the rear structure of the cover shown in FIG. 3A . As shown in the figure, the cover 223 of the present invention may include a first outlet 2231 and a first inlet 2232, Wherein the inlet channel 221 and the outlet channel 222 communicate with the first outlet 2231 and the first inlet 2232 respectively, in addition, the cover body 223 has grooves 2233 and 2234 surrounding the first outlet 2231 and the first inlet 2232 respectively, in order to provide a The ring-shaped sealing elements 228a and 228b are respectively disposed in the grooves 2233 and 2234 according to their corresponding sizes.

Please refer to FIG. 3C together with FIG. 3A , wherein FIG. 3C is a schematic diagram of the back structure of the cavity described in FIG. 3A , as shown in the figure, the cavity 224 of the present invention may include a receiving groove 2241 and a first through hole 2242 and a second through hole 2243, as shown in Figure 3A, the cavity 224 further has grooves 2244 and 2245 respectively surrounding the first through hole 2242 and the second through hole 2243 to provide an annular sealing element 228c and 228d are respectively arranged in the grooves 2244 and 2245 according to their corresponding sizes. In this way, the sealing elements 228a and 228b and the sealing elements 228c and 228d can make the cover 223 and the cavity 224 tightly combined , to prevent fluid leakage.

In addition, as shown in FIG. 3C , the cavity 224 further has a groove 2245 surrounding the periphery of the accommodating groove 2241 to provide an annular sealing element 229 disposed in the groove 2246 so that the cavity 224 is in contact with the mist. The chemical units 225 can be closely combined to prevent fluid from leaking out.

Please refer to FIG. 3A again, the atomizing unit 225 of the present invention can be an atomizing sheet, which has a plurality of nozzle holes 2251, and the plurality of nozzle holes 2251 are arranged correspondingly to the accommodating groove 2241 of the cavity 224 for Atomize and eject the fluid inside the accommodating groove 2241, and the actuating element 226 can be an annular piezoelectric sheet, which is an annular hollow structure and has an opening 2261, and the opening 2261 is connected with the multiple nozzles of the atomizing unit 225. The holes 2251 are correspondingly arranged, and the base 227 also has an opening 2271 , and the opening 2271 is arranged correspondingly to the opening 2261 of the actuating element 226 and the plurality of spray holes 2251 , so that the atomized liquid droplets can be ejected from the opening 2271 .

Please refer to FIG. 4A together with FIG. 3A and FIG. 2, wherein FIG. 4A is a schematic diagram of the operation of the atomization module shown in FIG. 3A. When the atomization system 2 is activated, the first pump 21 inputs the fluid into the atomization module through the inlet channel 221. 22, so that the fluid is delivered to the accommodating groove 2241 through the first outlet 2231 of the cover 223 and the first through hole 2242 of the cavity 224, and the actuating element 226 is activated by the voltage transmitted by the circuit unit 220. , so as to drive the atomization unit 225 to vibrate, and then part of the fluid inside the accommodating tank 2241 is ejected from the nozzle hole 2251 to form atomized droplets 30, while the unatomized fluid is pumped by the second pump 23 suction, and the second through hole 2243 of the cavity 224 and the first inlet 2232 of the cover 223 make the non-atomized fluid sucked into the second pump 23 through the outlet channel 222 and stored in the liquid storage unit 24, and can be When the atomization system 2 operates next time, it enters the first pump 21 again, so that the fluid is continuously circulated and supplied, so that the atomization module 22 can continuously atomize.

In addition, when the spray holes 2251 discharge the atomized liquid droplets 30, air will enter the interior of the accommodating tank 2241 from the spray holes 2251 and form air bubbles 31. At this time, due to the action of the first pump 21 and the second pump 23, The fluid can be continuously supplemented into the closed fluid circuit, and the air bubbles 31 will be discharged out of the cavity 224 along with the fluid in the accommodating groove 2241. In this way, not only the fluid can continuously contact the multiple nozzle holes 2251, but also avoid The bubbles 31 are accumulated in the containing groove 2241, thereby improving the stability of the fluid atomization phenomenon.

Furthermore, the fluid is continuously supplemented by the first pump 21 and the second pump 23, and by adjusting the atomization frequency and the sprayed atomization amount of the atomization module 22, the output flow rate of the first pump 21 and the second pump The suction flow of 23 enables the atomization system 2 to operate normally without being limited by the direction of gravity after being turned over, so that atomization in different directions can be performed according to requirements.

In some embodiments, the present invention sets a porous absorbent material 32 (as shown in FIG. 4B ) in the containing tank 2241 , such as foam cotton, and the porous absorbent material 32 is continuously connected with a plurality of spray holes 2251 Contact is mainly used to absorb fluid, so that the fluid can be filled to the porous absorbent material 32 in a regular and quantitative manner by the first pump 21 and the second pump 23, so that the porous absorbent material 32 can be kept moist and in continuous contact The nozzle hole 2251 is used to achieve the phenomenon that the fluid can be atomized stably.

Please refer to Figures 5A and B, which are schematic structural views of the liquid atomizing injection drug delivery device of the present invention, wherein Figure 5A is a front structural view of the drug delivery device, and Figure 5B is a perspective view of the back structure of the drug delivery device. As shown in the figure, the liquid atomization injection drug delivery device 4 of the present invention includes a body 41 and a handle 42, and the body 41 has an opening 411, which is connected with a plurality of spray holes 2251 of the atomization unit 225 and the actuating element. The opening 2261 of the base 226 and the opening 2271 of the base 227 are arranged correspondingly, so that the atomized liquid droplets can be ejected from the opening 411 of the main body. In addition, the handle 42 is provided with a switch element 421, which can be used by the user to control the liquid atomization injection drug delivery device 4 for drug delivery.

According to a preferred embodiment of the present invention, the liquid atomization injection drug delivery device 4 mainly includes a first pump 21, an atomization module 22, a second pump 23, a liquid storage unit 24 and a control circuit board 43, wherein the first pump 21, the mist The chemical module 22, the second pump 23 and the liquid storage unit 24 are connected in series to form a closed fluid circuit, and are arranged in the body 41, while the control circuit board 43 is arranged in the handle 42, and includes a pump driving integrated circuit ( IC) 431 and an atomization module drive integrated circuit (IC) 432, wherein the first pump 21 and the second pump 23 are respectively connected to the pump drive IC 431 through two wires, and the atomization module 22 is connected to the pump drive IC 431 through two wires The atomization module driving IC 432 is connected to input the driving signal of alternating current, thereby driving the first pump 21, the atomization module 22 and the second pump 23 for drug administration.

The first pump 21 and the second pump 23 belong to low-frequency drive, and the frequency range is within 200 Hz. Since the frequency is related to the flow rate, the output frequency can be set by the pump driver IC 431 of the control circuit board 43, so that the pump flow rate can be controlled. The best match achieves the effect of no water droplets accumulating at the end of the nozzle hole of the atomization unit and no bubbles accumulating at the front of the nozzle hole, so that the system operates in a stable state. On the other hand, the atomization module 22 belongs to high-frequency drive, and the frequency range is between 10kHz and 200kHz, and atomization and spraying will occur at certain specific frequencies. These frequencies are resonant frequencies, so by controlling the fog on the circuit board The chemical module drives IC 432 to set the time to output the frequency, so that the atomized spray of quantitative liquid can be achieved.

The liquid atomized injection drug delivery device 4 of the present invention can be used as a drug delivery device for eye medicine or oral and nasal inhalation medicine, but it is not limited thereto. The scope of application of the inventive liquid atomization injection drug delivery device 4 .

To sum up, the present invention provides a liquid atomization injection drug delivery device. The first pump, the atomization module, the second pump and the liquid storage unit are connected in series to form a closed fluid circuit, so that the fluid can dissipate the mist The air bubbles generated in the cavity of the cavity during the atomization process are discharged out of the cavity, and the atomization can only be carried out in one direction without being limited by gravity. In addition, the closed fluid circuit allows the fluid to continuously contact the mist The atomization unit has a plurality of spray holes, so that the atomization system of the present invention can greatly improve the stability of the atomization phenomenon. In addition, by adjusting the settings of the pump driver IC and atomization module driver IC on the control circuit board, the output frequency of the pump and the spray time of the atomization module can be controlled to achieve atomized spraying of quantitative liquid.

Because the above-mentioned advantages are beyond the reach of known technologies, the liquid atomization injection drug delivery device of the present invention is of great industrial value, and an application is filed according to law.

The present invention can be modified in various ways by those who are familiar with this technology, but all are within the desired protection of the scope of the appended patent application.

Claims (9)

1. doser is sprayed in an atomization of liquid, comprises at least:

One first pump is in order to supply or to draw a fluid;

One atomizing module is connected with this first pump, and comprises an access road, an exit passageway and a plurality of spray orifice, in order to this fluid atomizing of part is sprayed;

A liquid storage unit, with the first pump and the fluid atomizer modules form a closed loop, so that the fluid continuous contact with the plurality of discharge orifices Bing bubbles; and

One control circuit board is connected with this first pump and this atomizing module, in order to the output frequency of controlling this first pump and the ejection time of this atomizing module.

2. doser is sprayed in the atomization of liquid as claimed in claim 1; It is characterized in that also comprising one second pump; Wherein this first pump and this second pump are a piezoelectric pump and the form that adopts one-in-and-one-out, have single inlet and single outlet respectively, and the inlet of this first delivery side of pump and this second pump is connected with this access road and this exit passageway of this atomizing module respectively; And the inlet of this first pump and this second delivery side of pump are connected with this liquid storage unit, to form this enclosed flow body loop.

3. doser is sprayed in the atomization of liquid as claimed in claim 1, it is characterized in that this atomizing module comprises:

One lid;

One cavity has a storage tank, in order to ccontaining this fluid;

One base has an opening;

One atomization unit has this a plurality of spray orifices;

One activates element, has an opening; And

A plurality of potted components;

This atomizing module is provided with assembling with this lid, these a plurality of potted components, this cavity, sealing element, this atomization unit, this actuation element and corresponding the stacking of this base in regular turn, and this opening of this opening of this actuation element and this base and the corresponding setting of these a plurality of spray orifices.

4 as claimed in claim 3, wherein the atomized liquid delivery device, characterized in that the atomizer unit is a spray film, and having the plurality of nozzle holes, Bing corresponding to the receiving groove should be set to A portion of this fluid is atomized spray.

5. doser is sprayed in the atomization of liquid as claimed in claim 1; It is characterized in that also further comprising a body and a handle, have an opening on this body, itself and the corresponding setting of these a plurality of spray orifices of this atomizing module; Make that the drop of atomizing can be by this opening ejection of this body; Be provided with this control circuit board in this handle, and this handle is provided with a switch element, is available for users to control this atomization of liquid and sprays doser and carry out administration.

6. doser is sprayed in the atomization of liquid as claimed in claim 1; It is characterized in that; This control circuit board comprises a pump drive integrated circult and an atomizing module drive integrated circult, and this pump drive integrated circult and this first pump electrically connect, to transmit this first pump of drive; And this atomizing module drive integrated circult and this atomizing module electrically connect, and carry out administration to transmit this atomizing module of drive.

7. doser is sprayed in an atomization of liquid, comprises at least:

One first pump is in order to supply or to draw a fluid;

One atomizing module is connected with this first pump, and comprises a cavity, an access road, an exit passageway and a plurality of spray orifice, in order to this fluid atomizing of part is sprayed;

One porous absorption material is arranged in this cavity, in order to absorb this fluid;

A liquid storage unit, with the first pump and the fluid atomizer modules form a closed loop, so that the fluid continuous contact with the plurality of discharge orifices Bing bubbles; and

One control circuit board is connected with this first pump and this atomizing module, in order to the output frequency of controlling this first pump and the ejection time of this atomizing module.

8. doser is sprayed in the described atomization of liquid of claim 7, it is characterized in that this porous absorption material is that a foaming is continuous.

9. doser is sprayed in the atomization of liquid as claimed in claim 7; It is characterized in that this control circuit board comprises a pump drive integrated circult and an atomizing module drive integrated circult; This pump drive integrated circult and this first pump electrically connect; With this first pump of transmission drive, and this atomizing module drive integrated circult and this atomizing module electrically connect, and carry out administration to transmit this atomizing module of drive.

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