An airway drug delivery device and its intelligent atomized drug dosage control method

Abstract

The present invention relates to the technical field of medical devices, and discloses an airway drug delivery device and an intelligent atomized drug delivery amount control method thereof, including: a drug delivery main body, on which a liquid storage tank is provided, a drug amount control main body is provided on one side of the liquid storage tank, a chamber is provided in the drug amount control main body, the chamber is respectively communicated with the liquid storage tank and the atomization chamber of the drug delivery main body, and an atomization component is provided in the atomization chamber; the drug amount control main body transfers the liquid medicine in the liquid storage tank to the chamber according to the set drug delivery amount, and then provides the liquid medicine to the atomization chamber by controlling the volume change of the chamber. The drug amount control main body can transfer the liquid medicine in the liquid storage tank to the chamber according to the set drug delivery amount, and can control the drug delivery amount during atomization so that the drug delivery amount meets the set drug delivery amount, improving the treatment effect; in addition, during the atomization process, the volume of the chamber can be reduced to zero, and the liquid medicine inside it can be completely delivered to the atomization chamber for atomization, reducing the amount of liquid medicine remaining in the chamber and preventing waste of liquid medicine.

Description

Technical Field

[0001] The present invention relates to the technical field of atomizers, and more specifically, to an airway drug delivery device and an intelligent atomization drug delivery amount control method thereof. Background Art

[0002] A medical atomizer is a device used to treat upper respiratory diseases. It can atomize liquid medicine into tiny particles, and the medicine can enter the respiratory tract and lungs through inhalation, so as to achieve the purpose of painless, rapid and effective treatment. Atomizers are mainly classified into ultrasonic atomizers, compressed atomizers and mesh atomizers according to their principles. Among them, the mesh atomizer uses tiny ultrasonic vibrations and a mesh spray head to form an atomization effect.

[0003] In the prior art, after each atomization, there is still some unatomized liquid medicine remaining in the atomizer, resulting in waste of the liquid medicine, making it difficult to accurately control the drug delivery amount and resulting in poor treatment effects. Therefore, it is necessary to propose an airway drug delivery device and an intelligent atomization drug delivery amount control method to at least partially solve the problems existing in the prior art. Summary of the Invention

[0004] A series of simplified concepts are introduced in the Summary of the Invention section, which will be further described in detail in the Detailed Description section. The Summary of the Invention section of the present invention does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the protection scope of the claimed technical solution.

[0005] To at least partially solve the above problems, the present invention provides an airway drug delivery device, including: a drug delivery main body, on which a liquid storage tank is provided. One side of the liquid storage tank is provided with a drug amount control main body. A chamber is provided in the drug amount control main body. The chamber is respectively communicated with the liquid storage tank and the atomization chamber of the drug delivery main body. An atomization component is provided in the atomization chamber. The drug amount control main body transfers the liquid medicine in the liquid storage tank to the chamber according to the set drug delivery amount, and then provides the liquid medicine to the atomization chamber by controlling the volume change of the chamber.

[0006] Preferably, the drug amount control main body includes: a fixed cylinder, inside which a plug body is provided. A chamber is formed between the plug body and the inside of the fixed cylinder. A first pipe body penetrates through the plug body and the fixed cylinder. An inlet and an outlet are provided on the first pipe body. The inlet is communicated with the liquid storage tank, and the outlet is communicated with the atomization chamber. A driving component is used to drive the plug body and the first pipe body to move, so as to change the volume of the chamber and keep the inlet and outlet of the first pipe body at the middle position of the chamber.

[0007] Preferably, the driving assembly includes: a first driving cylinder with a first internal thread provided on its inner side, and a first external thread connected to the first internal thread provided on the outer side of the fixed cylinder; a second driving cylinder with a second internal thread provided on its inner side, and a second external thread connected to the second internal thread provided on the outer side of the first pipe body, one end of the second driving cylinder being connected to the plug body and the other end being connected to the second driving cylinder; a driving part connected to the first driving cylinder for controlling the rotation of the first driving cylinder.

[0008] Preferably, the first internal thread and the second internal thread satisfy the condition that when the first driving cylinder and the first pipe body move axially simultaneously, the moving distance of the first pipe body is half of the moving distance of the first driving cylinder.

[0009] Preferably, one end of the chamber close to the atomization chamber is conical, and one end of the plug body close to the atomization chamber is also conical.

[0010] Preferably, an inlet channel communicating with the liquid inlet and an outlet channel communicating with the liquid outlet are provided in the first pipe body, the inlet channel communicates with the liquid storage tank, and the outlet channel communicates with the atomization chamber;

[0011] The first pipe body includes: a first pipe section, a second pipe section, and a third pipe section connected in sequence. The first pipe section is used for connecting with the driving assembly, and both the liquid inlet and the liquid outlet are arranged on the first pipe section; the second pipe section is a telescopic section, and the third pipe section is used for connecting with the fixed cylinder.

[0012] Preferably, a first one-way valve is provided in the inlet channel, and a second one-way valve is provided in the outlet channel;

[0013] When the volume of the chamber increases, the liquid medicine in the liquid storage tank can be transferred into the chamber; when the volume of the chamber decreases, the liquid medicine in the chamber can be conveyed into the atomization chamber for atomization.

[0014] Preferably, a pressure sensor is provided in the atomization chamber for detecting the real-time pressure in the atomization chamber; during atomization, the driving assembly controls the moving speed of the plug body according to the real-time pressure in the atomization chamber so that the real-time pressure in the atomization chamber is maintained within a set pressure range.

[0015] An intelligent atomization drug dosage control method applied to the airway drug delivery device of the present invention includes:

[0016] According to the set drug dosage, increasing the volume of the chamber of the drug dosage control main body to the set volume to transfer the liquid medicine in the liquid storage tank into the chamber;

[0017] Controlling the plug body to move at a set speed and obtaining the real-time pressure in the atomization chamber;

[0018] Adjust the moving speed of the plug body according to the real-time pressure in the atomization cavity, so as to maintain the real-time pressure in the atomization cavity within the set pressure range.

[0019] Preferably, the determination of the set volume includes:

[0020] Determine the theoretical volume of the chamber according to the set drug dosage;

[0021] When the volume of the chamber remains unchanged, obtain the amount of liquid medicine flowing from the liquid storage tank into the first tube body;

[0022] Obtain the volume compensation amount when the chamber volume increases according to the difference between the total amount of liquid medicine that can be stored in the first tube body and the amount of liquid medicine flowing in;

[0023] Obtain the set volume according to the sum of the theoretical volume and the volume compensation amount.

[0024] Compared with the prior art, the present invention at least includes the following beneficial effects:

[0025] The airway drug delivery device and its intelligent atomization drug dosage control method of the present invention can transfer the liquid medicine in the liquid storage tank to the chamber according to the set drug dosage through the set drug dosage control main body, and can control the drug dosage during atomization so that the drug dosage meets the set drug dosage, improving the treatment effect; in addition, during the atomization process, the volume of the chamber can be reduced to zero, and the liquid medicine inside can be completely delivered to the atomization cavity for atomization, reducing the amount of liquid medicine remaining in the chamber and preventing waste of liquid medicine.

[0026] For the airway drug delivery device and its intelligent atomization drug dosage control method of the present invention, other advantages, objectives and features of the present invention will be partially reflected by the following description, and partially will also be understood by those skilled in the art through the research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0028] Figure 1 It is a schematic structural diagram of the cover body of the airway drug delivery device of the present invention being opened;

[0029] Figure 2 It is a schematic structural diagram of the airway drug delivery device of the present invention and a breathing mask;

[0030] Figure 3 It is a schematic partial internal structural diagram of the airway drug delivery device of the present invention;

[0031] Figure 4Schematic diagram of the structure for increasing the chamber of the drug amount control main body of the airway drug delivery device described in the present invention to the set volume;

[0032] Figure 5 Schematic diagram of the structure of the airway drug delivery device described in the present invention when the chamber volume decreases during the atomization process;

[0033] Figure 6 Schematic diagram of the structure of the airway drug delivery device described in the present invention when the chamber volume decreases to the minimum;

[0034] Figure 7 Flow chart of the intelligent atomization drug delivery amount control method described in the present invention;

[0035] Figure 8 Flow chart of step S1 in the intelligent atomization drug delivery amount control method described in the present invention. Detailed implementation manners

[0036] The following further elaborates on the present invention in conjunction with the accompanying drawings and embodiments, so that those skilled in the art can implement it according to the description in the specification.

[0037] It should be understood that terms such as "having", "comprising", and "including" used herein do not exclude the presence or addition of one or more other elements or their combinations.

[0038] As Figure 3 shown, the present invention provides an airway drug delivery device, including: a drug delivery main body 1, on which a liquid storage tank 2 is provided. On one side of the liquid storage tank 2, a drug amount control main body 3 is provided. A chamber 4 is provided inside the drug amount control main body 3. The chamber 4 is respectively communicated with the liquid storage tank 2 and the atomization chamber 5 of the drug delivery main body 1. An atomization assembly 6 is provided inside the atomization chamber 5; the drug amount control main body 3 transfers the liquid medicine in the liquid storage tank 2 into the chamber 4 according to the set drug delivery amount, and then provides the liquid medicine to the atomization chamber 5 by controlling the volume change of the chamber 4.

[0039] Among them, as Figure 1 shown, a cover body 8 is provided on the liquid storage tank 2 of the drug delivery main body 1. After the cover body 8 is opened, the liquid medicine required for atomization can be added into the liquid storage tank 2; a power-on key and a charging port are provided on the side of the drug delivery main body 1. The atomization chamber 5 is correspondingly arranged with the mist outlet 9. As Figure 2 shown, a detachable breathing mask 10 can be provided on the mist outlet 9.

[0040] The drug amount control main body 3 can be arranged vertically or horizontally. When arranged vertically, the atomization chamber 5 is below the drug amount control main body 3.

[0041] Before use, the volume of chamber 4 is minimized, preferably its volume is zero. Open the cover 8 and add the liquid medicine required for atomization into the liquid storage tank 2. Before atomization, the medicine dosage control main body 3 works. According to the set dosage, it increases the volume of chamber 4 so that chamber 4 is filled with the liquid medicine. During atomization, the volume of chamber 4 is gradually reduced through the medicine dosage control main body 3, so as to supply the liquid medicine to the atomization chamber 5 to realize atomization. The atomized liquid medicine can be inhaled by the human body through the breathing mask 10.

[0042] Through the set medicine dosage control main body 3, the liquid medicine in the liquid storage tank 2 can be transferred into chamber 4 according to the set dosage, and the dosage during atomization can be controlled to make the dosage meet the set dosage, improving the treatment effect. In addition, during the atomization process, the volume of chamber 4 can be reduced to zero, and the liquid medicine inside can be completely transported into the atomization chamber 5 for atomization, reducing the residual liquid medicine in chamber 4 and preventing waste of the liquid medicine.

[0043] As Figure 4 shown, in one embodiment, the medicine dosage control main body 3 includes: a fixed cylinder 310 with a plug 320 arranged inside it. The plug 320 and the inside of the fixed cylinder 310 form chamber 4. A first pipe body 330 penetrates through the plug 320 and the fixed cylinder 310. An inlet 331 and an outlet 332 are arranged on the first pipe body 330. The inlet 331 is communicated with the liquid storage tank 2, and the outlet 332 is communicated with the atomization chamber 5. A driving component is used to drive the plug 320 and the first pipe body 330 to move, so that the volume of chamber 4 changes and the inlet 331 and the outlet 332 of the first pipe body 330 are kept at the middle position of chamber 4.

[0044] As Figure 3 shown, the first pipe body 330 is connected to the liquid storage tank 2 through a second pipe body 11, and the second pipe body 11 can be selected as a flexible pipe.

[0045] When the volume of chamber 4 increases, the liquid storage tank 2 can be communicated with chamber 4 through the inlet 331 of the first pipe body 330, while the atomization chamber 5 is not communicated with chamber 4. The pressure inside chamber 4 decreases, so that the liquid medicine in the liquid storage tank 2 is sucked into chamber 4 through the inlet 331 of the first pipe body 330.

[0046] When the volume of chamber 4 decreases, the liquid storage tank 2 is not communicated with chamber 4, while the atomization chamber 5 is communicated with chamber 4 through the outlet 332 of the first pipe body. The pressure inside chamber 4 increases, so that the liquid medicine in chamber 4 is discharged through the outlet 332 to enter the atomization chamber 5 for atomization.

[0047] In the case of the volume change of the chamber 4, the liquid inlet 331 and the liquid outlet 332 of the first pipe body 330 always remain at the middle position of the chamber 4, so that the liquid medicine in the chamber 4 can effectively enter the atomization chamber 5, prevent a small amount of gas in the chamber 4 from entering the atomization chamber 5, and improve the atomization effect of the liquid medicine.

[0048] As Figures 4 - 6 shown, in one embodiment, the driving assembly includes: a first driving cylinder 340, which is provided with a first internal thread on its inner side, and the outer side of the fixed cylinder 310 is provided with a first external thread connected to the first internal thread; a second driving cylinder 350, which is provided with a second internal thread on its inner side, and the outer side of the first pipe body 330 is provided with a second external thread connected to the second internal thread, one end of the second driving cylinder 350 is connected to the plug body 320, and the other end is connected to the second driving cylinder 350; a driving part, connected to the first driving cylinder 340, for controlling the rotation of the first driving cylinder 340.

[0049] The driving part can select any driving mechanism in the prior art that can drive the first driving cylinder 340 to rotate and does not hinder its axial movement; when the driving part works, it drives the first driving cylinder 340 to rotate. At the same time, the second driving cylinder 350 also rotates synchronously. The fixed cylinder 310 is fixedly connected to the drug delivery main body 1, and the first driving cylinder 340 is threadedly connected to the fixed cylinder 310, so that the first driving cylinder 340 and the second driving cylinder 350 move simultaneously, driving the plug body 320 to move, realizing the increase or decrease of the volume of the chamber 4; and the first pipe body 330 can only move axially and cannot rotate. Since the first pipe body 330 is threadedly connected to the second driving cylinder 350, the rotation of the second driving cylinder 350 will cause the first pipe body 330 to move axially, so as to ensure the positions of the liquid inlet 331 and the liquid outlet 332 of the first pipe body 330. Thus, during the atomization process, the liquid medicine can always be discharged from the middle of the chamber 4, preventing the liquid medicine from being deposited for a long time and causing uneven atomization concentration of the liquid medicine. At the same time, since heat is generated when the atomization assembly 6 works, the increase in the temperature of the liquid medicine will affect the atomization concentration of the liquid medicine. In the above solution, the liquid medicine entering the atomization chamber 5 is discharged from the middle of the chamber 4 and is at a certain distance from the atomization chamber 5, which can reduce the influence of temperature on the liquid medicine concentration and further ensure the uniformity of the liquid medicine atomization concentration.

[0050] Further, the conditions satisfied by the first internal thread and the second internal thread are: when the first driving cylinder 340 and the first pipe body 330 move axially at the same time, the moving distance of the first pipe body 330 is half of the moving distance of the first driving cylinder 340.

[0051] To ensure the positions of the liquid inlet 331 and the liquid outlet 332, the threads of the first driving cylinder 340 and the fixed cylinder 310, as well as the threads of the second driving cylinder 350 and the first pipe body 330, are pre-designed so that the liquid inlet 331 and the liquid outlet 332 are always kept in the middle of the chamber 4, to ensure the effectiveness of the liquid medicine discharge, reduce the influence of temperature on the atomization of the liquid medicine, ensure the uniformity of the atomization concentration of the liquid medicine in the atomization stage, prevent the change of the atomization concentration of the liquid medicine due to the increase of temperature, and improve the atomization effect.

[0052] As Figure 4 shown, further, one end of the chamber 4 close to the atomization chamber 5 is conical, and one end of the plug body 320 close to the atomization chamber 5 is also conical.

[0053] To further ensure that the liquid medicine in the chamber 4 can be completely discharged, the corresponding ends of the plug body 320 and the chamber 4 are set to be conical to form a better extrusion of the liquid medicine and promote the complete discharge of the liquid medicine.

[0054] As Figure 5 shown, in one embodiment, an inlet channel 333 communicating with the liquid inlet 331 and an outlet channel 334 communicating with the liquid outlet 332 are provided in the first pipe body 330. The inlet channel 333 communicates with the liquid storage tank 2, and the outlet channel 334 communicates with the atomization chamber 5;

[0055] The outlet channel 334 and the inlet channel 333 are not directly connected, but both communicate with the chamber 4;

[0056] The first pipe body 330 includes: a first pipe section 335, a second pipe section 336 and a third pipe section 337 connected in sequence. The first pipe section 335 is used for connecting with the driving assembly, and both the liquid inlet 331 and the liquid outlet 332 are provided on the first pipe section 335; the second pipe section 336 is a telescopic section, and the third pipe section 337 is used for connecting with the fixed cylinder 310.

[0057] The first pipe section 335 can move axially under the drive of the second driving cylinder 350, thereby driving the second pipe section 336 to expand and contract axially. Since the third pipe section 337 is connected with the fixed cylinder 310 in a limiting manner, the first pipe section 335 and the second pipe section 336 cannot rotate; the second pipe section 336 can adopt a telescopic pipe that can only expand and contract axially; when the volume of the chamber 4 is the smallest, the telescopic pipe can retract, and the outlet channel 334 becomes relatively shorter, so that the amount of medicine remaining in the outlet channel 334 can be greatly reduced, further ensuring the accuracy of the dosage and reducing the waste of the liquid medicine.

[0058] As Figure 5 shown, in one embodiment, a first one-way valve 12 is provided in the inlet channel 333, and a second one-way valve 7 is provided in the outlet channel 334;

[0059] When the volume of the chamber 4 increases, the liquid medicine in the liquid storage tank 2 can be transferred into the chamber 4; when the volume of the chamber 4 decreases, the liquid medicine in the chamber 4 can be delivered into the atomization chamber 5 for atomization.

[0060] The first one-way valve 12 only allows the liquid medicine to enter the chamber 4 from the liquid inlet passage 333, and the second one-way valve 7 only allows the liquid medicine to enter the atomization chamber 5 from the liquid outlet passage 334;

[0061] The first one-way valve 12 is arranged close to the liquid inlet 331, and the second one-way valve 7 is arranged close to the atomization chamber 5; with such an arrangement, when the volume of the chamber 4 is the smallest before atomization, the liquid medicine in the liquid storage tank 2 can naturally flow into the liquid inlet passage 333; before the atomization is about to end (when the volume of the chamber 4 changes from large to small), it can be ensured that the liquid medicine enters the liquid outlet passage 334 instead of the residual gas in the chamber 4 (a small amount of gas enters at the beginning stage when the liquid medicine is transferred into the chamber 4), and at the end moment of atomization, the small amount of gas in the chamber 4 finally enters the liquid outlet passage 334, so that the gas can squeeze the liquid medicine in the liquid outlet passage 334 forward, and then enter the atomization chamber 5 for final atomization; the residue of the liquid medicine in the liquid outlet passage 334 is reduced, and the atomization effect is improved.

[0062] In one embodiment, a pressure sensor is arranged in the atomization chamber 5, and the pressure sensor is used to detect the real-time pressure in the atomization chamber 5; when atomization is carried out, the driving assembly controls the moving speed of the plug body 320 according to the real-time pressure in the atomization chamber 5, so that the real-time pressure in the atomization chamber 5 is maintained within a set pressure range.

[0063] The pressure in the atomization chamber 5 is maintained within a set pressure range, which can ensure that there is always liquid medicine in the atomization chamber 5 for atomization, ensuring the continuity of atomization. When the real-time pressure exceeds the set pressure range, by controlling the driving assembly, the volume change speed of the chamber 4 is adjusted, and then the speed of supplying the liquid medicine from the chamber 4 to the atomization chamber 5 is adjusted to ensure the atomization effect.

[0064] Through the above design, the atomization situation can be monitored in real time, the continuity of atomization and the effectiveness of liquid medicine supply are ensured, and the atomization effect is improved.

[0065] As Figure 7 shown, the present invention also provides an intelligent atomization drug dosage control method, which is applied to the airway drug delivery device of the present invention, including:

[0066] S1. According to the set drug dosage, increase the volume of the chamber 4 of the drug dosage control main body 3 to the set volume, so as to transfer the liquid medicine in the liquid storage tank 2 into the chamber 4;

[0067] S2. Control the plug body 320 to move at a set speed and obtain the real-time pressure in the atomization chamber 5;

[0068] S3. Adjust the moving speed of the plug body 320 according to the real-time pressure in the atomization chamber 5 so that the real-time pressure in the atomization chamber 5 is maintained within a set pressure range.

[0069] The set drug dosage can be set according to the atomization object and the type of liquid medicine used, and the set drug dosage is input into the airway drug delivery device (a control module can be set on the airway drug delivery device to control the overall operation of the airway drug delivery device). Then, the drug dosage control main body 3 increases the volume of the chamber 4 according to the set drug dosage and reaches the set volume corresponding to the set drug dosage. In this way, all the liquid medicine in the chamber 4 will participate in atomization, ensuring the drug dosage required for atomization and improving the control accuracy of the drug dosage.

[0070] During atomization, control the plug body 320 to move at a set speed (the set speed is the pre-set moving speed of the plug body 320, which can be a constant value or variable and can be obtained based on empirical data), monitor the real-time pressure in the atomization chamber 5, and adaptively adjust the moving speed of the plug body 320 according to the feedback of the real-time pressure, so that the real-time pressure in the atomization chamber 5 is maintained within a set pressure range to ensure the atomization effect.

[0071] As Figure 8 shown, further, the determination of the set volume includes:

[0072] S11. Determine the theoretical volume of the chamber 4 according to the set drug dosage;

[0073] S12. When the volume of the chamber 4 remains unchanged, obtain the amount of liquid medicine flowing from the liquid storage tank 2 into the first pipe body 330;

[0074] S13. Obtain the volume compensation amount when the volume of the chamber 4 increases according to the difference between the total amount of liquid medicine that can be stored in the first pipe body 330 and the amount of flowing-in liquid medicine;

[0075] S14. Obtain the set volume according to the sum of the theoretical volume and the volume compensation amount.

[0076] Before atomization, the liquid medicine will naturally flow from the liquid storage tank 2 into the first tube body 330. However, since there is air in the first tube body 330, the liquid medicine will not fill the first tube body 330. This causes a small amount of gas in the first tube body 330 to be inhaled at the initial moment when the volume of the chamber 4 changes from small to large. Therefore, to ensure the accuracy of the dosage transferred into the chamber 4, the change in the volume of the chamber 4 is compensated. Specifically, a flow detector can be provided at one end of the first tube body 330 close to the liquid storage tank 2 (alternatively, when connected to the liquid storage tank 2 through the second tube 11, the flow detector can be provided at the connection between the second tube 11 and the liquid storage tank 2). When the liquid medicine in the liquid storage tank 2 starts to flow into the first tube body 330, the flow detector starts to detect and time until the liquid medicine stops flowing, at which point the timing ends. Based on the flow rate detected by the flow detector and the time, the amount of liquid medicine flowing into the first tube body 330 can be obtained. Then, by subtracting the amount of liquid medicine flowing into the first tube body 330 from the total amount of liquid medicine that can be stored in the first tube body 330, the volume compensation amount corresponding to the increase in the volume of the chamber 4 can be obtained. The sum of the volume compensation amount and the theoretical volume is the set volume, so that the chamber 4 can be increased to the set volume, enabling the liquid medicine with the set dosage to be filled into the chamber 4 and improving the accuracy of the atomization dosage.

[0077] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0078] In the present invention, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or communicable with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0079] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present invention. For those skilled in the art, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and the examples shown and described herein.

Claims

1. An airway drug delivery device, characterized in that: include: A drug delivery body (1) is provided with a liquid storage tank (2), a drug dosage control body (3) is provided on one side of the liquid storage tank (2), a chamber (4) is provided in the drug dosage control body (3), the chamber (4) is communicated with the liquid storage tank (2) and an atomization chamber (5) of the drug delivery body (1) respectively, and an atomization assembly (6) is provided in the atomization chamber (5); the drug dosage control body (3) transfers the drug solution in the liquid storage tank (2) to the chamber (4) according to a set drug dosage, and then supplies the drug solution to the atomization chamber (5) by controlling the volume change of the chamber (4); The drug dosage control body (3) comprises: a fixed cylinder (310) having a plug body (320) disposed therein, wherein the plug body (320) and the interior of the fixed cylinder (310) form a chamber (4); a first tube body (330) which penetrates the plug body (320) and the fixed cylinder (310), wherein the first tube body (330) is provided with a liquid inlet (331) and a liquid outlet (332), wherein the liquid inlet (331) is communicated with the liquid storage tank (2), and the liquid outlet (332) is communicated with the atomization chamber (5); and a driving assembly for driving the plug body (320) and the first tube body (330) to move so as to change the volume of the chamber (4) and to keep the liquid inlet (331) and the liquid outlet (332) of the first tube body (330) at the middle position of the chamber (4); The driving assembly comprises: a first driving cylinder (340) having a first internal thread on its inner side, and a first external thread connected to the first internal thread on the outer side of the fixing cylinder (310); a second driving cylinder (350) having a second internal thread on its inner side, and a second external thread connected to the second internal thread on the outer side of the first tube body (330), one end of the second driving cylinder (350) is connected to the plug body (320), and the other end is connected to the second driving cylinder (350); and a driving unit connected to the first driving cylinder (340) for controlling the rotation of the first driving cylinder (340).

2. The airway drug delivery device according to claim 1, characterized in that: The first internal thread and the second internal thread satisfy the following condition: when the first drive cylinder (340) and the first tube body (330) move axially at the same time, the moving distance of the first tube body (330) is half the moving distance of the first drive cylinder (340).

3. The airway drug delivery device according to claim 1, characterized in that: One end of the chamber (4) close to the atomization chamber (5) is conical, and one end of the plug body (320) close to the atomization chamber (5) is also conical.

4. The airway drug delivery device according to claim 1, characterized in that: A liquid inlet channel (333) communicating with the liquid inlet (331) and a liquid outlet channel (334) communicating with the liquid outlet (332) are provided in the first tube body (330); the liquid inlet channel (333) is communicated with the liquid storage tank (2), and the liquid outlet channel (334) is communicated with the atomization chamber (5); The first tube body (330) comprises: a first tube section (335), a second tube section (336) and a third tube section (337) which are connected in sequence; the first tube section (335) is used to connect to the drive assembly; the liquid inlet (331) and the liquid outlet (332) are both arranged on the first tube section (335); the second tube section (336) is a telescopic section; and the third tube section (337) is used to connect to the fixed cylinder (310).

5. The airway drug delivery device according to claim 4, characterized in that: A first one-way valve (12) is provided in the liquid inlet channel (333), and a second one-way valve (7) is provided in the liquid outlet channel (334); When the volume of the chamber (4) increases, the drug liquid in the liquid storage tank (2) can be transferred to the chamber (4); when the volume of the chamber (4) decreases, the drug liquid in the chamber (4) can be transported to the atomization chamber (5) for atomization.

6. The airway drug delivery device according to claim 1, characterized in that: A pressure sensor is provided in the atomizing chamber (5), and the pressure sensor is used to detect the real-time pressure in the atomizing chamber (5); when atomizing, the driving component controls the moving speed of the plug body (320) according to the real-time pressure in the atomizing chamber (5), so that the pressure in the atomizing chamber (5) is maintained within a set pressure range.

7. The airway drug delivery device according to any one of claims 1 to 6, characterized in that: When atomizing, the intelligent atomization dosage control method includes: According to the set dosage, the volume of the chamber (4) of the dosage control body (3) is increased to the set volume, so as to transfer the drug solution in the liquid storage tank (2) into the chamber (4); Controlling the plug body (320) to move at a set speed and obtaining the real-time pressure in the atomization chamber (5); The moving speed of the plug body (320) is adjusted according to the real-time pressure in the atomization chamber (5), so that the real-time pressure in the atomization chamber (5) is maintained within a set pressure range.

8. The airway drug delivery device according to claim 7, characterized in that: The determination of the set volume includes: Determining the theoretical volume of the chamber (4) according to the set dosage; When the volume of the chamber (4) does not change, obtaining the amount of liquid medicine flowing from the liquid storage tank (2) into the first tube body (330); Obtaining a volume compensation amount when the volume of the chamber (4) increases according to the difference between the total amount of liquid medicine that can be stored in the first tube (330) and the amount of liquid medicine that flows in; The set volume is obtained based on the sum of the theoretical volume and the volume compensation amount.

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