An inhalation drug delivery device

Abstract

The present invention discloses an inhalation administration device, comprising a pressure propeller, a first housing and a second housing; the first housing is connected to the second housing to form an accommodation space, and the pressure propeller is arranged in the accommodation space; the pressure propeller comprises a pressure accumulation mechanism and a release mechanism; the pressure accumulation mechanism has two states of pressure accumulation and release. In the pressure accumulation state, the pressure accumulation mechanism is engaged with the release mechanism; in the release state, the pressure accumulation mechanism is disengaged from the release mechanism; when the pressure inside the inhalation administration device is less than the external pressure, the atmospheric pressure drives the release mechanism to release the pressure accumulation mechanism. The inhalation administration device of the present invention has a pressure accumulation mechanism and a release mechanism. After the pressure accumulation mechanism accumulates pressure, it is released by the release mechanism. The release action of the release mechanism is triggered by the user's inhalation, completely separating the user's hand operation from the breathing rhythm, and perfectly realizing the synchronization of drug ejection and the user's inhalation.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and particularly to an inhalation drug delivery device. Background Art

[0002] An inhalation drug delivery device is a drug delivery device that sprays a drug from the mouth of a user (patient) and allows the medicament to enter the respiratory system as the user inhales. The common operation method of existing inhalation drug delivery devices is that the user (patient) presses a metering valve on a medicine bottle and inhales at the same time to inhale the drug carried out by a propellant into the lungs or respiratory tract.

[0003] Therefore, for the inhalation drug delivery device of the prior art, a very high synchronization requirement is imposed on the hand pressing and inhalation actions of the user (patient). However, for some users (patients), especially the young, the old, and the users (patients) who need assistance in drug administration, the inhalation drug delivery device of the prior art causes great trouble. Often, it is very difficult to coordinate the hands and the mouth, and little drug is inhaled into the respiratory tract, while a large amount remains in the throat or mouth. Summary of the Invention

[0004] The object of the present invention is to provide an inhalation drug delivery device for the above-mentioned defects in the prior art, which can ensure drug delivery when the patient inhales.

[0005] To achieve the above object of the invention, the present invention adopts the following technical solution: an inhalation drug delivery device, comprising a pressure propeller, a first housing, and a second housing; the first housing is connected to the second housing to form an accommodation space, and the pressure propeller is arranged in the accommodation space; the pressure propeller includes a pressure accumulation mechanism and a release mechanism; the pressure accumulation mechanism has two states of pressure accumulation and release. In the pressure accumulation state, the pressure accumulation mechanism is engaged with the release mechanism; in the release state, the pressure accumulation mechanism is disengaged from the release mechanism; when the pressure inside the inhalation drug delivery device is less than the external pressure, the atmospheric pressure drives the release mechanism to release the pressure accumulation mechanism.

[0006] Further, the pressure accumulation mechanism includes a piston housing, a piston rack, a pressing column rack, a gear, and a spiral spring; the piston housing is movably arranged in the first housing; the piston rack is integrally arranged in the piston housing and extends towards the bottom plate of the first housing; the piston rack and the pressing column rack are respectively arranged on opposite sides in the circumferential direction of the gear and are both engaged with the gear; the spiral spring is arranged between the first housing and the piston housing, and the telescopic direction of the spiral spring is the same as the moving direction of the piston housing.

[0007] Further, the pressing column rack includes a pressing column and a second meshing rack which are integrally connected; the second meshing rack is arranged in the first housing, and the second meshing rack meshes with the gear; the pressing column exposes the bottom plate of the first housing through a through hole on the bottom plate of the first housing.

[0008] Further, a sealing ring is arranged between the pressing column and the through hole; a pressing cap is arranged at the end of the pressing column exposing the bottom plate of the first housing.

[0009] Further, a gear rack is integrally arranged on the bottom plate of the first housing; the gear is arranged on the gear rack through a gear shaft.

[0010] Further, the release mechanism includes a clamping member and a release member; the clamping member is in a block structure in the shape of "concave", and one side of its bottom is pivotally connected to the gear rack through a pin shaft.

[0011] Further, a hook is arranged at the end of the piston rack; a clamping groove is arranged inside the open end of the clamping member on the side pivotally connected to the gear rack; in the pressure accumulation state, the hook is clamped with the clamping groove.

[0012] Further, the release member is in a sheet shape; the release member is arranged between the clamping member and the bottom plate of the first housing; when the pressure inside the inhalation drug delivery device is less than the external pressure, the atmospheric pressure pushes the release member to squeeze the clamping member away from the pivoted end.

[0013] Further, an air inlet smaller than the release member is arranged at the corresponding position of the bottom plate of the first housing and the release member; the air inlet is covered by the release member.

[0014] Further, the main body of the torsion spring is fixed on the gear rack; one torsion arm of the torsion spring supports on the bottom plate of the first housing, and the other torsion arm presses the clamping member, pressing the release member tightly between the clamping member and the bottom plate of the first housing.

[0015] Compared with the prior art, the advantages of the present invention are as follows:

[0016] The inhalation drug delivery device of the present invention has a pressure accumulation mechanism and a release mechanism. After the pressure accumulation mechanism accumulates pressure, it is released by the release mechanism. The release action of the release mechanism is triggered by the user's inhalation, completely separating the user's hand operation from the user's breathing rhythm; after the pressure accumulation mechanism is released, it triggers the drug bottle metering valve arranged in the second housing, and the drug bottle sprays medicine. Therefore, the triggering timing of the drug bottle metering valve is only determined by the user's inhalation, perfectly realizing the synchronization of drug spraying and the user's inhalation, and bringing a good use experience to the user. Description of the Drawings

[0017] Figure 1 is the front view of an inhalation administration device of the present invention;

[0018] Figure 2 is Figure 1 a sectional view taken along the A-A direction;

[0019] Figure 3 is Figure 2 an enlarged view of part B in

[0020] Figure 4 is Figure 1 a sectional view taken along the C-C direction;

[0021] Figure 5 is Figure 4 an enlarged view of part D in

[0022] Explanation of reference numerals:

[0023] 1. Pressure propeller;

[0024] 2. Pressure accumulation mechanism; 21. Piston housing; 22. Piston rack; 23. Pressing column rack; 24. Gear; 25. Helical spring;

[0025] 3. Release mechanism; 30. Clamping part; 31. Release part; 32. Torsion spring;

[0026] 4. First housing; 40. Gear bracket;

[0027] 5. Medicine bottle;

[0028] 6. Second housing;

[0029] 7. Pressing cap;

[0030] 8. Sealing ring. Detailed implementation manners

[0031] The technical solution of the invention will be further described in detail below in conjunction with the preferred embodiments and their accompanying drawings in a non-limiting manner. In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length h", "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. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention and should not be construed as a limitation of the present invention.

[0032] As Figure 1 and Figure 2 shown, an inhalation administration device of the present invention includes a pressure propeller 1, a first housing 4, and a second housing 6. The first housing 4 and the second housing 6 cooperate to form a receiving space. Specifically, the receiving space is used to place a medicine bottle 5, and the medicine bottle 5 can move freely up and down in the receiving space. The medicine bottle 5 is a pressure-resistant container with a metering valve in the prior art, and the pressing part of the metering valve faces the first housing 4. The pressure propeller 1 is arranged in the receiving space and is located between the medicine bottle 5 and the first housing 4.

[0033] The first housing 4 is an open-ended cylinder. One end of the second housing 6 is provided with a mouthpiece, and the other end is connected to the open end of the first housing 4. As a preferred means, the first housing 4 and the second housing 6 are connected by a thread.

[0034] As Figures 3 to 5 shown, the pressure propeller 1 includes a pressure accumulation mechanism 2 and a release mechanism 3. The pressure accumulation mechanism 2 has two states of pressure accumulation and release. In the pressure accumulation state, the pressure accumulation mechanism 2 is engaged with the release mechanism 3; in the release state, the pressure accumulation mechanism 2 is disengaged from the release mechanism 3.

[0035] The pressure accumulation mechanism 2 includes a piston housing 21, a piston rack 22, a pressing column rack 23, a gear 24, and a helical spring 25.

[0036] The piston housing 21 is a cylinder with a bottom, and a vent hole is provided on the plate body of the piston housing 21. The piston housing 21 is movably arranged in the first housing 4, and the opening of the piston housing 21 faces the bottom plate of the first housing 4. The helical spring 25 is arranged between the piston housing 21 and the first housing 4, and the telescopic direction of the helical spring 25 is consistent with the moving direction of the piston housing 21. As a preferred means, the helical spring 25 is a large-diameter spring and is arranged closely along the cylinder of the piston housing 21.

[0037] The piston rack 22 is integrally arranged in the piston housing 21 and extends towards the bottom plate of the first housing 4. A first meshing rack is arranged on one side of the piston rack 22.

[0038] The pressing column rack 23 includes a pressing column and a second meshing rack which are integrally connected. The second meshing rack is arranged in the first housing 4, and the pressing column exposes the bottom plate of the first housing 4 through a through hole on the bottom plate of the first housing 4. The pressing column can reciprocally slide in the through hole. As a preferred means, a sealing ring 8 is arranged between the pressing column and the through hole. As another preferred means, a pressing cap 7 is provided at the end of the pressing column where it exposes the bottom plate of the first housing 4.

[0039] A gear rack 40 is integrally provided on the bottom plate of the first housing 4, and the gear 24 is arranged on the gear rack 40 through a gear shaft. The first meshing rack and the second meshing rack are respectively arranged on two opposite sides in the circumferential direction of the gear 24 and both mesh with the gear 24. A catch is further provided at the end of the piston rack 22.

[0040] The release mechanism 3 includes a clamping member 30, a release member 31 and a torsion spring 32. The clamping member 31 is generally in a block structure in the shape of a "concave", and one side of its bottom is pivotally connected to the gear rack 40 through a pin shaft, and a clamping groove is provided inside the open side on the pivoted side. The clamping groove can cooperate with the catch located at the end of the piston rack 22 described above.

[0041] The release member 31 is in a sheet shape and is arranged between the clamping member 30 and the bottom plate of the first housing 4. The main body of the torsion spring 32 is fixed on the gear rack 40, one torsion arm of it supports on the bottom plate of the first housing 4, and the other torsion arm presses on the clamping member 30, pressing the release member 31 tightly between the clamping member 30 and the bottom plate of the first housing 4.

[0042] At the corresponding position between the bottom plate of the first housing 4 and the release member 31, an air inlet smaller than the release member 31 is provided, and the air inlet is covered by the release member 31.

[0043] The usage method of the inhalation drug delivery device of the present invention is as follows:

[0044] 1. Place the medicine bottle 5 between the first housing 4 and the second housing 6 so that the dosing valve button of the medicine bottle 5 faces the first housing 4. As a preferred means, the nozzle of the medicine bottle 5 can be connected to the vicinity of the suction nozzle of the second housing 6 through a conduit.

[0045] 2. The first housing 4 is on the upper side and the second housing 6 is on the lower side, and the liquid medicine (medicine, adjuvant, propellant, etc.) in the medicine bottle 5 is mixed evenly.

[0046] 3. Press the pressing cap 7, and the pressure accumulating mechanism 2 accumulates pressure. The pressure accumulation process of the pressure accumulating mechanism 2 is as follows:

[0047] The pressing column rack 23 drives the gear 24 to rotate, drives the piston rack 22 and the piston housing 21 to move towards the bottom plate direction of the first housing 4, and the spiral spring 25 is compressed until the hook at the end of the piston rack 22 catches the card slot on the engaging member 30 downward.

[0048] 4. The second housing 6 is on the upper side and the first housing 4 is on the lower side. The medicine bottle 5 is freely supported on the piston housing 21. Exhale as much as possible, then inhale slightly forcefully against the suction nozzle of the second housing 6. The release mechanism 3 releases the pressure accumulating mechanism 2, and the pressure accumulating mechanism 2 releases quickly, and the medicine is ejected.

[0049] The action process of the release mechanism 3 is as follows:

[0050] Inhaling causes the pressure in the accommodating space to be lower than the atmospheric pressure. When the pressure difference between the inside and outside of the accommodating space is greater than the torsion force of the torsion spring 32, the external atmospheric pressure will push the release member 31 to squeeze one end of the engaging member 30. Due to the action of the pin shaft, the card slot at the other end of the engaging member 30 is disengaged from the hook at the end of the piston rack 22. The potential energy stored in the spiral spring 25 is quickly released, pushing the piston housing 21 to accelerate and impact the metering valve button on the medicine bottle 5, thereby triggering the metering valve. The propellant in the medicine bottle 5 drives the metered medicine to be ejected and is synchronously brought into the respiratory system by the inhalation of the user (patient).

[0051] The inhalation administration device of the present invention has a unique structural design, which completely separates the hand operation of the user (patient) from the breathing rhythm of the user (patient). The triggering timing of the medicine bottle metering valve is only determined by the inhalation of the user (patient), and the synchronization of the medicine ejection and the inhalation of the user (patient) is perfectly achieved.

[0052] The above embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

1. An inhalation administration device, characterized in that: It includes a pressure propeller, a first housing and a second housing; The first housing is connected to the second housing to form an accommodation space, and the pressure propeller is arranged in the accommodation space; The pressure propeller includes a pressure accumulation mechanism and a release mechanism; The pressure accumulation mechanism has two states: pressure accumulation and release; In the pressure accumulation state, the pressure accumulation mechanism is engaged with the release mechanism; in the release state, the pressure accumulation mechanism is disengaged from the release mechanism; When the pressure inside the inhalation administration device is less than the external pressure, the atmospheric pressure drives the release mechanism to release the pressure accumulation mechanism; The pressure accumulation mechanism includes a piston housing, a piston rack, a pressing column rack, a gear and a spiral spring; The piston housing is movably arranged in the first housing; The piston rack is integrally arranged in the piston housing and extends towards the bottom plate of the first housing; The piston rack and the pressing column rack are respectively arranged on two opposite sides in the circumferential direction of the gear and are both engaged with the gear; The spiral spring is arranged between the first housing and the piston housing, and the telescopic direction of the spiral spring is consistent with the moving direction of the piston housing.

2. The inhalation administration device according to claim 1, characterized in that: The pressing column rack includes a pressing column and a second engagement rack integrally connected; The second engagement rack is arranged in the first housing and is engaged with the gear; The pressing column exposes the bottom plate of the first housing through a through hole on the bottom plate of the first housing.

3. The inhalation administration device according to claim 2, characterized in that: A sealing ring is arranged between the pressing column and the through hole; A pressing cap is provided at the end of the pressing column that exposes the bottom plate of the first housing.

4. The inhalation administration device according to claim 1, characterized in that: A gear rack is integrally provided on the bottom plate of the first housing; The gear is arranged on the gear rack through a gear shaft.

5. The inhalation administration device according to claim 4, characterized in that: The release mechanism includes a clamping member, a release member and a torsion spring; The clamping member has a block structure in the shape of "concave", and one side of its bottom is pivotally connected to the gear rack through a pin shaft.

6. The inhalation administration device according to claim 5, characterized in that: A hook is provided at the end of the piston rack; A clamping groove is provided inside the open side of the clamping member on the side pivotally connected to the gear rack; In the pressure accumulation state, the hook is engaged with the clamping groove.

7. The inhalation administration device according to claim 5, characterized in that: The release member is sheet-shaped; The release member is arranged between the clamping member and the bottom plate of the first housing; When the pressure inside the inhalation administration device is less than the external pressure, the atmospheric pressure pushes the release member to squeeze the clamping member away from the pivotally connected end.

8. The inhalation administration device according to claim 7, characterized in that: An air inlet smaller than the release member is provided at the corresponding position of the bottom plate of the first housing and the release member; The air inlet is covered by the release member.

9. The inhalation administration device according to claim 5, characterized in that: The main body of the torsion spring is fixed on the gear holder; One torsion arm of the torsion spring supports on the bottom plate of the first housing, and the other torsion arm presses on the clamping member, pressing the release member between the clamping member and the bottom plate of the first housing.

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