Airway drug delivery device and intelligent atomization drug delivery amount control method thereof

Abstract

The invention relates to the technical field of medical instruments, and discloses an airway drug delivery device and an intelligent atomization drug delivery amount control method thereof.The airway drug delivery device comprises a drug delivery body, a liquid storage tank is arranged on the drug delivery body, a drug amount control body is arranged on one side of the liquid storage tank, a cavity is formed in the drug amount control body, and the cavity communicates with the liquid storage tank and an atomization cavity of the drug delivery body; an atomizing assembly is arranged in the atomizing cavity; the medicine dosage control body transfers medicine liquid in the liquid storage tank into the cavity according to the set medicine dosage, and then the medicine liquid is provided for the atomization cavity by controlling the volume change of the cavity. The liquid medicine in the liquid storage tank can be transferred into the cavity according to the set dosage through the dosage control body, the dosage during atomization can be controlled, so that the dosage meets the set dosage, and the treatment effect is improved; besides, in the atomization process, the volume of the cavity can be reduced to zero, the liquid medicine in the cavity can be completely conveyed into the atomization cavity to be atomized, the amount of residual medicine in the cavity is reduced, and waste of the liquid medicine is prevented.

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 volume control method thereof. Background Art

[0002] Medical nebulizer is a device used to treat upper respiratory tract diseases. It can atomize liquid medicine into tiny particles, so that the medicine can enter the respiratory tract and lungs through inhalation, thus achieving the purpose of painless, rapid and effective treatment. According to the principle, nebulizers are mainly classified into ultrasonic nebulizers, compression nebulizers and mesh nebulizers. Among them, mesh nebulizers use tiny ultrasonic vibrations and mesh spray heads to form atomization effects.

[0003] In the prior art, after each atomization, some un-atomized liquid medicine will remain in the atomizer, resulting in a waste of liquid medicine, making it difficult to accurately control the dosage, and resulting in poor treatment effect. Therefore, it is necessary to propose an airway drug delivery device and an intelligent atomization drug delivery control method thereof 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, which will be further described in detail in the Detailed Description of the Invention. The Summary of the 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 scope of protection of the claimed technical solution.

[0005] In order to at least partially solve the above-mentioned problems, the present invention provides an airway drug delivery device, comprising: a drug delivery body, on which a liquid storage tank is provided, a drug dosage control body is provided on one side of the liquid storage tank, a chamber is provided in the drug dosage control body, the chamber is respectively connected with the liquid storage tank and the atomization chamber of the drug delivery body, and an atomization component is provided in the atomization chamber; the drug dosage control body transfers the drug liquid in the liquid storage tank to the chamber according to the set drug delivery amount, and then provides the drug liquid to the atomization chamber by controlling the volume change of the chamber.

[0006] Preferably, the dosage control body includes: a fixed cylinder, which has a plug body inside, and the plug body and the inside of the fixed cylinder form a chamber; a first tube body, which passes through the plug body and the fixed cylinder, and the first tube body is provided with a liquid inlet and a liquid outlet, the liquid inlet is connected to the liquid storage tank, and the liquid outlet is connected to the atomization chamber; a driving assembly, which is used to drive the plug body and the first tube body to move so that the volume of the chamber changes, and the liquid inlet and the liquid outlet of the first tube body are maintained in the middle position of the chamber.

[0007] Preferably, the driving assembly includes: a first driving cylinder, a first internal thread is provided on the inner side of which, and a first external thread connected to the first internal thread is provided on the outer side of the fixed cylinder; a second driving cylinder, a second internal thread is provided on the inner side of which, and a second external thread connected to the second internal thread is provided on the outer side of the first tube body, one end of the second driving cylinder is connected to the plug body, and the other end is connected to the second driving cylinder; a driving part, connected to the first driving cylinder, and used to control the rotation of the first driving cylinder.

[0008] Preferably, the first internal thread and the second internal thread satisfy the following condition: when the first driving cylinder and the first tube body move axially at the same time, the moving distance of the first tube body is half of the moving distance of the first driving cylinder.

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

[0010] Preferably, a liquid inlet channel communicating with the liquid inlet and a liquid outlet channel communicating with the liquid outlet are provided in the first tube body, the liquid inlet channel is communicated with the liquid storage tank, and the liquid outlet channel is communicated with the atomization chamber; The first tube body includes: a first tube segment, a second tube segment and a third tube segment connected in sequence, the first tube segment is used to connect with the driving assembly, and the liquid inlet and the liquid outlet are both arranged on the first tube segment; the second tube segment is a telescopic segment, and the third tube segment is used to connect with the fixed tube.

[0011] Preferably, a first one-way valve is provided in the liquid inlet channel, and a second one-way valve is provided in the liquid outlet channel; 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 transported to the atomization chamber for atomization.

[0012] Preferably, a pressure sensor is provided in the atomization chamber, and the pressure sensor is used to detect the real-time pressure in the atomization chamber; when atomization is performed, the drive component 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.

[0013] An intelligent atomization drug delivery control method, applied to the airway drug delivery device of the present invention, comprises: According to the set dosage, the volume of the chamber of the dosage control body is increased to the set volume to transfer the drug solution in the liquid storage tank into the chamber; Control the plug to move at a set speed and obtain the real-time pressure in the atomization chamber; According to the real-time pressure in the atomization chamber, the moving speed of the plug body is adjusted so that the real-time pressure in the atomization chamber is maintained within the set pressure range.

[0014] Preferably, the determination of the set volume includes: According to the set dosage, the theoretical volume of the chamber is determined; When the volume of the chamber does not change, obtaining the amount of liquid medicine flowing from the liquid storage tank into the first tube body; Obtaining a volume compensation amount when the chamber volume increases according to a difference between a total amount of liquid medicine that can be stored in the first tube and an 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.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects: The airway drug delivery device and intelligent atomization drug delivery control method described in the present invention can transfer the drug liquid in the liquid storage tank to the chamber according to the set drug delivery amount through the drug delivery control body, and can control the drug delivery amount during atomization so that the drug delivery amount meets the set drug delivery amount, thereby improving the treatment effect; in addition, during the atomization process, the volume of the chamber can be reduced to zero, and the drug liquid inside it can be completely transported to the atomization chamber for atomization, thereby reducing the amount of drug remaining in the chamber and preventing waste of drug liquid.

[0016] The airway drug delivery device and intelligent atomization drug delivery control method described in the present invention, as well as other advantages, objectives and features of the present invention will be partially reflected through the following description, and will also be partially understood by technicians in this field through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying 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 of the present invention. In the accompanying drawings: Figure 1 It is a schematic structural diagram of the airway drug delivery device of the present invention with the cover body opened; Figure 2 It is a schematic diagram of the structure of the airway drug delivery device and the breathing mask of the present invention; Figure 3 It is a schematic diagram of a part of the internal structure of the airway drug delivery device of the present invention; Figure 4 It is a structural schematic diagram of the chamber of the drug dosage control body in the airway drug delivery device of the present invention being increased to a set volume; Figure 5 It is a schematic structural diagram of the airway drug delivery device of the present invention when the chamber volume is reduced during the atomization process; Figure 6 It is a schematic structural diagram of the airway drug delivery device of the present invention when the chamber volume is reduced to the minimum; Figure 7This is a flow chart of the intelligent atomization drug dosage control method of the present invention; Figure 8 This is a flow chart of step S1 in the intelligent atomization drug dosage control method described in the present invention. DETAILED DESCRIPTION

[0018] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments so that those skilled in the art can implement the invention with reference to the description.

[0019] It should be understood that the terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0020] like Figure 3 As shown, the present invention provides an airway drug delivery device, comprising: a drug delivery body 1, on which a liquid storage tank 2 is provided, 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 respectively connected with the liquid storage tank 2 and an atomization chamber 5 of the drug delivery body 1, and an atomization component 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 the set drug delivery amount, and then provides the drug solution to the atomization chamber 5 by controlling the volume change of the chamber 4.

[0021] Among them, Figure 1 As shown, a cover 8 is provided on the liquid storage tank 2 of the drug delivery body 1. After the cover 8 is opened, the drug solution required for atomization can be added to the liquid storage tank 2; a switch key and a charging port are provided on the side of the drug delivery body 1, and the atomization cavity 5 and the mist outlet 9 are correspondingly arranged. Figure 2 As shown, a respirator mask 10 which is easy to disassemble can be provided on the mist outlet 9.

[0022] The drug dosage control body 3 can be arranged vertically or horizontally. When arranged vertically, the atomization chamber 5 is below the drug dosage control body 3 .

[0023] Before use, the volume of the chamber 4 is at its minimum, preferably zero, the cover 8 is opened, and the medicine required for atomization is added to the liquid storage tank 2; before atomization, the dosage control body 3 works, and increases the volume of the chamber 4 according to the set dosage, so that the chamber 4 is filled with medicine; during atomization, the volume of the chamber 4 is gradually reduced through the dosage control body 3, thereby providing medicine to the atomization chamber 5 to achieve atomization, and the atomized medicine can be inhaled by the human body through the breathing mask 10.

[0024] The drug dosage control body 3 is set up so that the drug liquid in the liquid storage tank 2 can be transferred to the chamber 4 according to the set dosage, and the dosage during atomization can be controlled so that the dosage meets the set dosage and the treatment effect is improved; in addition, during the atomization process, the volume of the chamber 4 can be reduced to zero, and the drug liquid inside it can be completely transported to the atomization chamber 5 for atomization, thereby reducing the amount of residual medicine in the chamber 4 and preventing waste of drug liquid.

[0025] like Figure 4 As shown, in one embodiment, the dosage control body 3 includes: a fixed cylinder 310, in which a plug body 320 is provided, and the plug body 320 and the interior of the fixed cylinder 310 form a chamber 4; a first tube body 330, which is arranged through the plug body 320 and the fixed cylinder 310, and the first tube body 330 is provided with a liquid inlet 331 and a liquid outlet 332, the liquid inlet 331 is connected to the liquid storage tank 2, and the liquid outlet 332 is connected to the atomization chamber 5; a driving component, used to drive the plug body 320 and the first tube body 330 to move, so that the volume of the chamber 4 changes, and the liquid inlet 331 and the liquid outlet 332 of the first tube body 330 are maintained in the middle position of the chamber 4.

[0026] like Figure 3 As shown, the first tube body 330 is connected to the liquid storage tank 2 through the second tube body 11, and the second tube body 11 can be a hose.

[0027] When the volume of the chamber 4 increases, the liquid storage tank 2 can be connected to the chamber 4 through the liquid inlet 331 of the first tube body 330, while the atomization chamber 5 is not connected to the chamber 4, and the pressure inside the chamber 4 decreases, so that the liquid in the liquid storage tank 2 is sucked into the chamber 4 through the liquid inlet 331 of the first tube body 330; When the volume of the chamber 4 decreases, the liquid storage tank 2 is not connected to the chamber 4, while the atomizing chamber 5 is connected to the chamber 4 through the liquid outlet 332 of the first tube body, and the pressure inside the chamber 4 increases, so that the liquid medicine in the chamber 4 is discharged through the liquid outlet 332 to enter the atomizing chamber 5 for atomization; When the volume of the chamber 4 changes, the liquid inlet 331 and the liquid outlet 332 of the first tube body 330 always remain in the middle position of the chamber 4, so that the medicine liquid in the chamber 4 can effectively enter the atomization chamber 5, and prevent a small amount of gas in the chamber 4 from entering the atomization chamber 5, so as to improve the atomization effect of the medicine liquid.

[0028] like Figure 4-Figure 6As shown, in one embodiment, the driving assembly includes: a first driving cylinder 340, which has 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 fixed cylinder 310; a second driving cylinder 350, which has 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; a driving part, which is connected to the first driving cylinder 340, and is used to control the rotation of the first driving cylinder 340.

[0029] 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 is working, it drives the first driving cylinder 340 to rotate, and at the same time, the second driving cylinder 350 also rotates synchronously, the fixed cylinder 310 is fixedly connected to the drug delivery 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 at the same time, driving the plug body 320 to move, thereby increasing or decreasing the volume of the chamber 4; and the first tube body 330 can only move along the axial direction and cannot rotate. Since the first tube body 330 is threadedly connected to the second driving cylinder 350, The rotation of the second driving cylinder 350 will cause the first tube body 330 to move axially, thereby ensuring the positions of the liquid inlet 331 and the liquid outlet 332 of the first tube body 330, so that during the atomization process, the medicine can always be discharged from the middle of the chamber 4 to prevent the medicine from being deposited for a long time and causing uneven concentration of the atomized medicine. At the same time, since the atomization component 6 generates heat when working, the increase in the temperature of the medicine will affect the concentration of the atomized medicine. In the above scheme, the medicine entering the atomization chamber 5 is discharged from the middle of the chamber 4, at a certain distance from the atomization chamber 5, which can reduce the influence of temperature on the concentration of the medicine, and further ensure the uniformity of the atomized concentration of the medicine.

[0030] Further, the first internal thread and the second internal thread satisfy the following condition: when the first driving 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 of the moving distance of the first driving cylinder 340 .

[0031] In order 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 tube body 330 are pre-designed so that the liquid inlet 331 and the liquid outlet 332 are always maintained in the middle of the chamber 4 to ensure the effectiveness of the discharge of the liquid medicine, and reduce the effect of temperature on the atomization of the liquid medicine, to ensure the uniformity of the atomization concentration of the liquid medicine during the atomization stage, to prevent the atomization concentration of the liquid medicine from changing with the increase of temperature, and to improve the atomization effect.

[0032] like Figure 4As 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.

[0033] In order to further ensure that the medicine liquid in the chamber 4 can be completely discharged, the plug body 320 and the corresponding end of the chamber 4 are set to be conical, so as to form a better squeezing effect on the medicine liquid and promote the complete discharge of the medicine liquid.

[0034] like Figure 5 As shown, in one embodiment, 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 liquid outlet channel 334 and the liquid inlet channel 333 are not directly connected, but are both connected to the chamber 4; The first tube body 330 includes: a first tube section 335, a second tube section 336 and a third tube section 337 connected in sequence, the first tube section 335 is used to connect with the driving assembly, and 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 with the fixed tube 310.

[0035] The first tube segment 335 can move axially under the drive of the second driving cylinder 350, thereby driving the second tube segment 336 to expand and contract axially. Since the third tube segment 337 is limitedly connected to the fixed cylinder 310, the first tube segment 335 and the second tube segment 336 cannot rotate; the second tube segment 336 can adopt a telescopic tube that can only expand and contract axially; when the volume of the chamber 4 is the smallest, the telescopic tube can be retracted, and the liquid outlet channel 334 becomes relatively shorter, thereby greatly reducing the amount of medicine remaining in the liquid outlet channel 334, further ensuring the accuracy of the dosage and reducing the waste of liquid medicine.

[0036] like Figure 5 As shown, in one embodiment, 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 liquid medicine in the liquid storage tank 2 can be transferred to the chamber 4; when the volume of the chamber 4 decreases, the liquid medicine in the chamber 4 can be transported to the atomization chamber 5 for atomization.

[0037] The first one-way valve 12 can only allow the liquid medicine to enter the chamber 4 from the liquid inlet channel 333, and the second one-way valve 7 can only allow the liquid medicine to enter the atomization chamber 5 from the liquid outlet channel 334; The first one-way valve 12 is arranged near the liquid inlet 331, and the second one-way valve 7 is arranged near the atomization chamber 5; with such arrangement, before atomization, when the volume of the chamber 4 is the smallest, the medicine liquid in the liquid storage tank 2 can naturally flow into the liquid inlet channel 333; before the atomization is about to end (the volume of the chamber 4 changes from large to small), it can be ensured that it is the medicine liquid rather than the residual gas in the chamber 4 that enters the liquid outlet channel 334 (a small amount of gas will enter at the beginning of the transfer of the medicine liquid to the chamber 4), and at the end of the atomization, the last small amount of gas in the chamber 4 will enter the liquid outlet channel 334, so that the gas can squeeze the medicine liquid in the liquid outlet channel 334 forward, and thus enter the atomization chamber 5 for the final atomization; the residual medicine liquid in the liquid outlet channel 334 is reduced, and the atomization effect is improved.

[0038] In one embodiment, a pressure sensor is provided 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 performed, the driving component 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.

[0039] The pressure in the atomization chamber 5 is maintained within the 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, the volume change speed of the chamber 4 is adjusted by controlling the drive component, thereby adjusting the speed at which the chamber 4 supplies liquid medicine to the atomization chamber 5 to ensure the atomization effect.

[0040] Through the above design, the atomization situation can be monitored in real time to ensure the continuity of atomization and the effectiveness of liquid medicine supply, thereby improving the atomization effect.

[0041] like Figure 7 As shown, the present invention also provides an intelligent atomization drug delivery control method, which is applied to the airway drug delivery device of the present invention, comprising: S1. 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 to the chamber 4; S2, controlling the plug body 320 to move at a set speed, and obtaining the real-time pressure in the atomizing chamber 5; S3. According to the real-time pressure in the atomizing chamber 5, the moving speed of the plug body 320 is adjusted to maintain the real-time pressure in the atomizing chamber 5 within a set pressure range.

[0042] The set dosage can be set according to the atomization object and the type of liquid medicine used, and the set dosage is input into the airway drug delivery device (a control module can be provided on the airway drug delivery device to control the overall operation of the airway drug delivery device). The dosage control body 3 increases the volume of the chamber 4 according to the set dosage, and reaches the set volume corresponding to the set dosage. In this way, the liquid medicine in the chamber 4 will participate in the atomization, ensuring the dosage required for atomization and improving the control accuracy of the dosage. When atomization is performed, the plug body 320 is controlled to move at a set speed (the set speed is a pre-set moving speed of the plug body 320, which can be a constant value or a variable value, and can be obtained based on empirical data), and the real-time pressure in the atomization chamber 5 is monitored. The moving speed of the plug body 320 is adaptively adjusted based on the feedback of the real-time pressure, so that the real-time pressure in the atomization chamber 5 is maintained within the set pressure range to ensure the atomization effect.

[0043] like Figure 8 As shown, further, the determination of the set volume includes: S11, determining the theoretical volume of the chamber 4 according to the set dosage; S12, 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; S13, 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; S14. Obtain the set volume based on the sum of the theoretical volume and the volume compensation amount.

[0044] Before atomization, the drug solution will naturally flow from the liquid reservoir 2 into the first tube body 330. However, due to the presence of air in the first tube body 330, the drug solution will not fill the first tube body 330. This will cause 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, in order to ensure the accuracy of the amount of medicine transferred to the chamber 4, the volume change of the chamber 4 is compensated; a flow detector can be set at one end of the first tube body 330 close to the liquid reservoir 2 (or, when connected to the liquid reservoir 2 through the second tube body 11, the flow detector can be set at the connection between the second tube body 11 and the liquid reservoir 2), and the liquid reservoir 2 is filled with air. When the medicine starts to flow into the first tube body 330, the flow detector starts detection and timing, and ends timing when the medicine stops flowing. The amount of medicine flowing into the first tube body 330 can be obtained based on the flow rate and time detected by the flow detector. Then, the amount of medicine flowing into the first tube body 330 is subtracted from the total amount of medicine that can be stored in the first tube body 330, and the volume compensation amount when the volume of the chamber 4 increases corresponding to the difference between the two can be obtained. The sum of the volume compensation amount and the theoretical volume is the set volume, which can increase the chamber 4 to the set volume, so that the set dosage of medicine can be filled into the chamber 4, thereby improving the accuracy of the atomization dosage.

[0045] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0046] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations 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).

2. The airway drug delivery device according to claim 1, characterized in that: 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 passes through 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).

3. The airway drug delivery device according to claim 2, characterized in that: 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).

4. The airway drug delivery device according to claim 3, 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).

5. The airway drug delivery device according to claim 3, 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.

6. The airway drug delivery device according to claim 2, 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).

7. The airway drug delivery device according to claim 6, 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.

8. The airway drug delivery device according to claim 2, 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.

9. An intelligent atomization drug delivery control method, applied to the airway drug delivery device according to any one of claims 1 to 8, characterized in that: include: 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.

10. The intelligent atomization drug dosage control method according to claim 9, 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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