Gear type respiration driving inhalation device

Abstract

The utility model relates to a gear type respiration driving inhalation device, and belongs to the field of medical quantitative aerosol drivers. Comprising an outer shell structural member, a counting module and a driving module. Wherein the driving module comprises a sleeve type shifting finger, a variable-diameter gear, a driving rack, a driving module shell, an airflow plate and an airflow plate rebound elastic sheet. The inhaling action of a user can be detected through the airflow plate, the driving rack can be released through the position change of the airflow plate, and the device automatically operates to complete the dosing operation. Wherein the driving part operates through meshing of a gear and a rack structure, the internal transmission part is not prone to slipping, the transmission process is stable and reliable, and the using stability and the dosing efficiency of the device are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of quantitative inhalation devices for delivering drug by oral inhalation, in particular to a kind of inhalation devices for driving administration using the respiratory action of patient. BACKGROUND

[0002] When patient uses conventional pressurized quantitative inhalation device, its operation process is mostly: open inhalation device mouthpiece cover, hold inhalation device mouthpiece part into oral cavity, actively press down aerosol bottle inside inhalation device, drive inhalation device to spray drug from mouthpiece part, while drug is sprayed, take deep breath, so that drug can smoothly enter patient's lung to complete administration. This kind of device only needs to press and inhale to complete rapid administration, which is beneficial to the needs of patient's daily or convenient use when going out. But for patients with uncoordinated hands and mouth, there is a high probability that pressing action and inhaling action are out of sync, drug is deposited in patient's oral cavity and enters digestive system instead of respiratory system, and drug cannot correctly reach administration site, so drug effect is greatly reduced.

[0003] Therefore, the development of inhalation device driven by patient's inhaling action is promoted, which reduces the operation requirements of patient for internal aerosol of device. After patient opens mouthpiece cover and holds mouthpiece into oral cavity, deep breath can be taken after preparation, which will trigger internal structure of device, and internal structure of device will automatically operate to press aerosol bottle inside, so as to achieve the purpose of automatic administration, and patient only needs to keep inhaling state in the process.

[0004] The more mature respiratory-driven inhalation device on the market uses lever transmission, and the special structure of lever can more evenly transmit the stress of each component in transmission process, but the transmission speed of lever structure will be slow, and the transmission process is prone to slipping phenomenon. UTILITY MODEL CONTENTS

[0005] The main purpose of the utility model is: in view of the above problems, provide a kind of gear type respiratory-driven inhalation device with high transmission efficiency and stable transmission process.

[0006] A kind of gear type respiratory-driven inhalation device, including top cover, big spring, bottle body cover, aerosol bottle, shell, counting module, drive module, mouthpiece and mouthpiece cover, wherein:

[0007] The top cover, the shell, the mouthpiece and the mouthpiece cover jointly constitute the outer shell structural member of inhalation device;

[0008] The big spring is pre-compressed and arranged at the uppermost position in the device, continuously applies the rebound force released by spring downward, the aerosol bottle stores liquid medicine, and the bottle body cover is clamped between the aerosol bottle and the big spring;

[0009] The counting module is arranged outside the shell and connected with the internal structure of the device to count and display according to the operation of the internal structure of the device;

[0010] Further, the driving module comprises a sleeve type shifting finger, a variable-diameter gear, a driving rack, a driving module shell, an air flow plate and an air flow plate spring, the air flow plate is used to control the locking state and the active state of the driving module, gears and racks are used for transmission in the driving module, the sleeve type shifting finger is sleeved on the lower end of the aerosol bottle, the lower end of the sleeve type shifting finger is provided with a transmission rack, and the transmission rack is engaged with the variable-diameter gear.

[0011] Further, the air flow plate is fixed on the driving module shell, and the air flow plate can rotate relative to the driving module shell.

[0012] Further, the air flow plate is provided with a driving pressing block, and the lower bottom surface of the driving pressing block is in contact with the upper top surface of the driving rack in the initial state.

[0013] Preferably, the longitudinal contact surface of the driving rack and the air flow plate is an inclined surface.

[0014] Preferably, the suction nozzle is provided with a vent, and the position state of the air flow plate in the device can be observed through the vent.

[0015] Further, the variable-diameter gear is fixed inside the driving module shell, and the position of the variable-diameter gear is fixed relative to the driving module shell.

[0016] Further, the variable-diameter gear is composed of a plurality of coaxial gears with different addendum circle diameters, the gear with the smallest addendum circle diameter is engaged with the transmission rack, and the driving rack is engaged with the gear with the largest addendum circle diameter in the variable-diameter gear.

[0017] Preferably, the ratio of the addendum circle diameters of the smallest gear and the largest gear of the variable-diameter gear is 1:1.5.

[0018] Further, the sleeve type shifting finger is provided with a buckling finger at the upper end, and the buckling finger is connected with the counting module.

[0019] Further, the air flow plate spring is fixed outside the driving module shell and has a flexible strip structure.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] When a patient uses this device, a pressurized metered-dose aerosol bottle is pre-installed inside. A large compression spring continuously applies downward pressure to the aerosol bottle. A sleeve-shaped finger is fitted onto the aerosol bottle; the upper end of the sleeve-shaped finger connects to a counting module, and the lower end of the sleeve-shaped finger engages with a variable-diameter gear via a drive rack structure, maintaining synchronous transmission between modules and components. Initially, the entire device is locked by an airflow plate. When the airflow plate does not detect the patient's inhalation, the sleeve-shaped finger supports the aerosol bottle, preventing it from being squeezed and sprayed with medication. When the patient inhales deeply, the airflow plate changes position due to air pressure, disengaging from the locked position. This activates the remaining components in the drive module, which, under the continuous force of the large spring, automatically presses and sprays the medication from the aerosol bottle. The drive module uses a gear and rack mechanism, which is less prone to slippage compared to traditional lever structures. The gear transmission is also smoother and more reliable, improving the device's performance.

[0022] Stability and dosing efficiency Attached Figure Description

[0023] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments with accompanying drawings, in which:

[0024] FIG. 1 This is an exploded structural diagram of a gear-type breathing-driven inhalation device according to a preferred embodiment of the present invention;

[0025] FIG. 2 This is an exploded structural diagram of a drive module according to a preferred embodiment of the present invention;

[0026] FIGS. 3A-3B This is a schematic diagram of the operating structure of a drive module according to a preferred embodiment of the present invention;

[0027] FIG. 4 This is an overall side view of a drive module according to a preferred embodiment of the present invention;

[0028] FIG. 5 This is an exploded structural diagram of a counting module according to a preferred embodiment of the present invention;

[0029] FIGS. 6A-6B This is a structural schematic diagram of the operation process of a counting module according to a preferred embodiment of the present invention;

[0030] FIGS. 7A-7B This is a cross-sectional view of the operation process of a gear-driven breathing inhalation device according to a preferred embodiment of the present invention;

[0031] The components are: 1-top cap, 2-large spring, 3-bottle cap, 4-aerosol bottle, 5-shell, 6-counting module, 61-inner shell of counting module, 611-anti-reverse support arm, 62-counting finger, 621-flexible top finger, 63-counting gear, 64-digital wheel, 65-pressure cap, 66-shell of counting module, 7-drive module, 71-sleeve finger, 711-transmission rack, 712-clamping finger, 72-variable diameter gear, 721-small gear, 722-large gear, 73-drive rack, 74-shell of drive module, 75-airflow plate rebound spring, 76-airflow plate, 761-drive pressure block, 8-nozzle, 81-vent, 9-nozzle cap. Detailed Implementation

[0032] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0033] FIGS. 1-7B This illustration shows a preferred embodiment of a gear-driven inhalation device according to the present invention, comprising: a top cover 1, a large spring 2, a bottle cap 3, an aerosol bottle 4, a housing 5, a counting module 6, a driving module 7, a mouthpiece 8, and a mouthpiece cap 9. The top cover 1, housing 5, mouthpiece 8, and mouthpiece cap 9 together form the outer shell structure of the overall inhalation device. The aerosol bottle 4 is located in the center of the inhalation device and stores pressurized liquid medication. It has a self-resetting valve structure; when the valve structure is pressed, the aerosol bottle 4 will spray a fixed dose of medication. Simultaneously, the valve has a reset structure to allow the aerosol bottle 4 to reset when not pressed. The large spring 2, after pre-compression, is positioned at the top of the device and continuously applies downward elastic force. The bottle cap 3 is located between the large spring 2 and the aerosol bottle 4, fitted over the upper end of the aerosol bottle 4, and is used to balance the force applied by the large spring 2. The counting module 6 is an integral component disposed outside the housing 5. The drive module 7 is located at the lower end of the aerosol bottle 4 and is set in the nozzle 8. The nozzle 8 is provided with a vent 81 so that external air can enter the nozzle 8 and avoid creating a vacuum environment in the nozzle 8.

[0034] like FIGS. 2-4As shown, the drive module 7 includes a sleeve-shaped shift finger 71, a variable diameter gear 72, a drive rack 73, a drive module housing 74, an airflow plate return spring 75, and an airflow plate 76. The sleeve-shaped shift finger 71 has a collar structure, with a snap finger 712 at the upper end and a drive rack 711 at the lower end. A strip-shaped support is also provided on the outside of the drive rack 711. After the device is installed, the strip-shaped support can be exposed outside the suction nozzle 8 through the slot on the suction nozzle 8. The airflow plate 76 is fixed to the drive module housing 74 and can rotate relative to the drive module housing 74. A drive pressure block 761 is provided at the upper end of the airflow plate 76. In the initial state, the drive pressure block 761 presses against the upper end of the drive rack 73, so that the drive module 7 is in a locked state. The variable-diameter gear 72 consists of two gears with different tip circle diameters. The ratio of the tip circle diameter of the pinion 721 to that of the large gear 722 is 1:1.5. The large gear 722 meshes with the drive rack 73, and the pinion 721 meshes with the transmission rack 711 at the lower end of the sleeve-shaped finger 71. This balances the force between the drive rack 73 and the sleeve-shaped finger 71. When the airflow plate 76 changes displacement, the drive pressure block 761 detaches from the upper end of the drive rack 73, allowing the drive module 7 to enter the operable state. The airflow plate rebound spring 75 is fixed to the outside of the sleeve-shaped finger 71. The airflow plate rebound spring 75 has a flexible strip structure. When the airflow plate 76 rotates towards the suction nozzle position, it compresses the airflow plate rebound spring 75. When the patient stops inhaling, the elasticity of the airflow plate rebound spring 75 causes the airflow plate 76 to return to its original position.

[0035] like FIGS. 5-6B As shown, the counting module 6 includes an embedded housing 61, a counting finger 62, a counting gear 63, a digital disk 64, a cover 65, and a housing 66. The embedded housing 61 is fixed with the counting finger 62, the counting gear 63, and the digital disk 64. The counting finger 62 can move up and down along a vertical line within the embedded housing 61, its movement depending on the position of other components inside the device. A flexible top finger 621 is provided on the counting finger 62. When the counting finger 62 moves downward, the flexible top finger 621 gradually contacts the teeth of the counting gear 63 and pushes the counting gear 63 to rotate clockwise. One side of the digital disk 64 is a digital display surface, and the other side is provided with a gear structure, which meshes with the counting gear 63. When the counting gear 63 rotates clockwise, the digital disk 64 rotates clockwise simultaneously. The counting module is also equipped with an anti-reverse support arm 611 on its inner housing 61. The anti-reverse support arm 611 is a flexible structure that works in conjunction with the counting gear 63. When the counting gear 63 rotates counterclockwise, the anti-reverse support arm 611 will restrict its movement, ensuring that the counting module 6 will not reverse or make counting errors due to shaking or bumping of the device.

[0036] like FIGS. 7A-7BAs shown, the sleeve-shaped lever 71 is fitted onto the lower end of the aerosol bottle 4, and the latch 712 is fixed to the counting lever 62, so that changes in the position of the aerosol bottle 4 can be transmitted to the counting module 6. When the device is not in use, the drive block 761 on the airflow plate 76 is positioned above the drive rack 73, pressing the drive rack 73 to lock it, restricting its movement, and keeping the device drive module 7 in a locked state. The sleeve-shaped lever 71 supports the aerosol bottle 4. When the patient uses the device, the patient inhales through the mouthpiece 8. Since the device is not in a vacuum state, the airflow plate 76 will rotate towards the inside of the device due to the change in airflow. At this time, the drive block 761 disengages from above the drive rack 73, and the drive module 7 is in an active state. Since the large spring 2 is already in a pre-compressed state during assembly, it will continue to exert downward force. When the drive module 7 is in an active state, the drive rack 73 is no longer restricted. The sleeve-shaped finger 71 and the aerosol bottle 4 move downward under the force applied by the large spring 2. The valve of the aerosol bottle 4 is squeezed to complete one injection of medication. At this time, the counting module 6 also completes one counting action. At this time, the strip-shaped support at the lower end of the sleeve-shaped finger 71 protrudes from the gap of the mouthpiece 8 outside the mouthpiece 8. When the patient stops inhaling, the airflow plate 76 can be automatically returned to its initial state by using the airflow plate rebound spring 75. The drive module 7 is manually returned to its original position. Specifically, the patient closes the mouthpiece cover 9, which pushes the strip-shaped support at the lower end of the sleeve-shaped finger 71. During this process, since the longitudinal contact surface between the airflow plate 76 and the drive rack 73 is inclined, the sleeve-shaped finger 71 can smoothly return to its initial position.

[0037] In the description of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," indicating orientation or positional relationships, are merely for the convenience of simplifying the description of this utility model, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, in the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A gear type breath-driven inhalation device, comprising a top cover, a large spring, a bottle body cover, an aerosol bottle, a shell, a counting module, a driving module, a suction nozzle and a suction nozzle cover, wherein: the top cover, the shell, the suction nozzle and the suction nozzle cover together constitute the outer shell structure of the inhalation device; the large spring is pre-compressed at the uppermost position inside the device, continuously applying the spring-released elastic force downward, the aerosol bottle stores a liquid medicine, and the bottle body cover is clamped between the aerosol bottle and the large spring; the counting module is arranged outside the shell and connected with the internal structure of the device, and counts and displays according to the operation of the internal structure of the device; characterized in that the driving module comprises a sleeve type driving finger, a variable diameter gear, a driving rack, a driving module shell, an airflow plate and an airflow plate elastic piece, the airflow plate is used to control the locking state and the active state of the driving module, gears and racks are used for transmission in the driving module, the sleeve type driving finger is sleeved at the lower end of the aerosol bottle, a transmission rack is arranged at the lower end of the sleeve type driving finger, and the transmission rack is engaged with the variable diameter gear. The airflow plate is fixed on the driving module shell, and the airflow plate can rotate relative to the driving module shell. A driving pressure block is arranged on the airflow plate, and the lower bottom surface of the driving pressure block is in contact with the upper top surface of the driving rack in the initial state. The longitudinal contact surface between the driving rack and the airflow plate is an inclined surface. An air inlet is arranged on the suction nozzle, and the position state of the airflow plate inside the device can be observed through the air inlet.

2. A gear-driven inhalation device according to claim 1, wherein The variable diameter gear is fixed inside the driving module shell, and the position of the variable diameter gear is fixed relative to the driving module shell.

3. A gear-driven inhalation device according to claim 2, wherein, The variable diameter gear is composed of multiple coaxial gears with different addendum circle diameters, wherein the gear with the smallest addendum circle diameter is engaged with the transmission rack, and the driving rack is engaged with the gear with the largest addendum circle diameter in the variable diameter gear.

4. A gear-driven inhalation device according to claim 3, wherein The ratio of the addendum circle diameters of the smallest gear and the largest gear of the variable diameter gear is 1:1.

5.

5. A gear-driven inhalation device according to claim 1, wherein A buckle finger is arranged at the upper end of the sleeve type driving finger, and the buckle finger is connected with the counting module.

6. A gear-driven inhalation device according to claim 1, wherein The airflow plate elastic piece is fixed outside the driving module shell and has a flexible strip structure.

7. A gear-driven inhalation device according to claim 6, wherein ​ 8. A gear-driven inhalation device according to claim 7, wherein ​ 9. A gear-driven inhalation device according to claim 1, wherein ​ 10. A gear-driven inhalation device according to claim 1, wherein ​

Images