CN113289171B

CN113289171B - Inhalation drug delivery device

Info

Publication number: CN113289171B
Application number: CN202110570667.5A
Authority: CN
Inventors: 王云龙; 阚星辉
Original assignee: Wuxi Cartier Technology Development Co ltd
Current assignee: Wuxi Cartier Technology Development Co ltd
Priority date: 2021-05-25
Filing date: 2021-05-25
Publication date: 2025-06-27
Anticipated expiration: 2041-05-25
Also published as: CN113289171A

Abstract

The present invention discloses an inhalation drug delivery device, comprising a pressure pusher, a first shell and a second shell; the first shell is connected to the second shell to form a accommodating space, and the pressure pusher is arranged in the accommodating space; the pressure pusher comprises a pressure storage mechanism and a release mechanism; the pressure storage mechanism has two states of pressure storage and release, and in the pressure storage state, the pressure storage mechanism is engaged with the release mechanism; in the release state, the pressure storage mechanism is disengaged from the release mechanism; when the pressure in the inhalation drug delivery device is less than the external pressure, the atmospheric pressure drives the release mechanism to release the pressure storage mechanism. The inhalation drug delivery device of the present invention has a pressure storage mechanism and a release mechanism, and the pressure storage mechanism is released by the release mechanism after the pressure is stored, and the release action of the release mechanism is triggered by the user's inhalation, which completely separates the user's hand operation from the breathing rhythm, and perfectly realizes the synchronization of drug spraying and the user's inhalation.

Description

Inhalation drug administration device

Technical Field

The invention relates to the field of medical equipment, in particular to an inhalation drug administration device.

Background

Inhalation drug delivery devices are a type of drug delivery device that sprays a drug from the mouth of a user (patient) and allows the drug to enter the respiratory system as the user inhales. Current inhalation drug delivery devices are typically operated by the user (patient) pressing a metering valve on the vial while inhaling to draw the drug carried by the propellant into the lungs or respiratory tract.

Therefore, the prior art inhalation drug delivery device requires high synchronization of the hand pressing and inhalation actions of the user (patient). However, for some users (patients), especially for young, elderly and other users (patients) who require the assistance of medication, the prior art inhalation medication administration devices have great trouble, often the hand and mouth fit is difficult to be consistent, and the medication is rarely inhaled into the respiratory tract and remains in large quantities in the throat or mouth.

Disclosure of Invention

The present invention has been made in view of the above-mentioned drawbacks of the prior art, and an object of the present invention is to provide an inhalation administration device capable of ensuring administration of the inhalation administration device when a patient inhales.

The invention aims at achieving the purposes, and adopts the following technical scheme that the inhalation drug delivery device comprises a pressure propeller, a first shell and a second shell, wherein the first shell is connected with the second shell to form an accommodating space, the pressure propeller is arranged in the accommodating space, the pressure propeller comprises a pressure accumulating mechanism and a release mechanism, the pressure accumulating mechanism is in a pressure accumulating state and a release state, the pressure accumulating mechanism is clamped with the release mechanism in the pressure accumulating state, the pressure accumulating mechanism is separated from the release mechanism in the release state, and when the pressure of the inhalation drug delivery device is smaller than the external pressure, the release mechanism is driven by atmospheric pressure to release the pressure accumulating mechanism.

The pressure accumulating mechanism comprises a first shell, a piston rack, a pressing column rack, a gear and a spiral spring, wherein the piston shell is movably arranged in the first shell, the piston rack is integrally arranged in the piston shell and extends towards a bottom plate of the first shell, the piston rack and the pressing column rack are respectively arranged on two opposite sides of the gear in the circumferential direction and are meshed with the gear, the spiral spring is arranged between the first shell and the piston shell, and the stretching direction of the spiral spring is consistent with the moving direction of the piston shell.

Further, the pressing column rack comprises a pressing column and a second meshing rack which are integrally connected, the second meshing rack is arranged in the first shell and is meshed with the gear, and the pressing column exposes out of the first shell bottom plate through a through hole in the first shell bottom plate.

Further, a sealing ring is arranged between the pressing column and the through hole, and a pressing cap is arranged at the tail end of the pressing column, which is exposed out of the first shell bottom plate.

Further, a gear frame is integrally arranged on the bottom plate of the first shell, and the gear is arranged on the gear frame through a gear shaft.

Furthermore, the release mechanism comprises a clamping piece and a release piece, wherein the clamping piece is of a concave block structure, and one side of the bottom of the clamping piece is pivoted on the gear frame through a pin shaft.

Furthermore, a clamping hook is arranged at the tail end of the piston rack, a clamping groove is formed in the inner side of the opening at one side pivoted with the gear rack of the clamping piece, and the clamping hook is clamped with the clamping groove in a pressure accumulation state.

The release piece is arranged between the clamping piece and the bottom plate of the first shell, and when the pressure in the inhalation administration device is smaller than the external pressure, the release piece is pushed by the atmospheric pressure to press the clamping piece to be far away from one end of the pin joint.

Further, an air inlet with a size smaller than that of the release piece is formed in the position, corresponding to the first shell bottom plate and the release piece, of the first shell bottom plate, and the air inlet is covered by the release piece.

Further, the main body of the torsion spring is fixed on the gear frame, one torsion arm of the torsion spring is supported on the bottom plate of the first shell, and the other torsion arm presses the clamping piece to press the release piece between the clamping piece and the bottom plate of the first shell.

Compared with the prior art, the invention has the advantages that:

The inhalation drug delivery device comprises the pressure accumulation mechanism and the release mechanism, wherein the pressure accumulation mechanism is released by the release mechanism after pressure accumulation, the release action of the release mechanism is triggered by inhalation of a user, the hand operation of the user is completely separated from the breathing rhythm of the user, and the pressure accumulation mechanism is released to trigger the drug bottle quantitative valve arranged in the second shell to spray the drug from the drug bottle, so that the triggering time of the drug bottle quantitative valve is only determined by the inhalation of the user, the synchronization of drug ejection and the inhalation of the user is perfectly realized, and good use experience is brought to the user.

Drawings

FIG. 1 is a front view of an inhalation delivery device of the present invention;

FIG. 2 is a cross-sectional view taken along the line A-A of FIG. 1;

FIG. 3 is an enlarged view of portion B of FIG. 2;

FIG. 4 is a cross-sectional view taken along the direction C-C of FIG. 1;

fig. 5 is an enlarged view of the portion D in fig. 4.

Reference numerals illustrate:

1. a pressure pusher;

2. A pressure accumulating mechanism; 21, a piston shell, 22, a piston rack, 23, a pressing column rack, 24, a gear, 25 and a spiral spring;

3. 30, a clamping piece, 31, a releasing piece, 32, a torsion spring;

4. 40, a gear rack;

5. A medicine bottle;

6. a second housing;

7. pressing the cap;

8. and (3) sealing rings.

Detailed Description

The technical scheme of the invention is further described in non-limiting detail below with reference to the preferred embodiments and the accompanying drawings. In the description of the present invention, it is to 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. refer to the azimuth or positional relationship based on the azimuth or positional relationship shown in the drawings. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.

As shown in fig. 1 and 2, an inhalation administration device of the present invention comprises a pressure impeller 1, a first housing 4 and a second housing 6, the first housing 4 and the second housing 6 being mated to form an accommodation space. Specifically, the accommodating space is used for accommodating the medicine bottle 5, and the medicine bottle 5 can freely move up and down in the accommodating space. The medicine bottle 5 is a pressure-resistant container with a dosing valve in the prior art, and the pressing part of the dosing valve faces the first shell 4. The pressure pusher 1 is disposed in the accommodation space between the medicine bottle 5 and the first housing 4.

The first housing 4 is an open cylinder. One end of the second housing 6 is provided with a suction nozzle, and the other end is connected with the open end of the first housing 4. Preferably, the first housing 4 and the second housing 6 are connected by screw threads.

As shown in fig. 3 to 5, the pressure pusher 1 includes an accumulator mechanism 2 and a release mechanism 3. The accumulator mechanism 2 has two states, namely an accumulator state in which the accumulator mechanism 2 is engaged with the release mechanism 3 and a release state in which the accumulator mechanism 2 is disengaged from the release mechanism 3.

The accumulator mechanism 2 includes a piston housing 21, a piston rack 22, a pressing post rack 23, a gear 24, and a coil spring 25.

The piston housing 21 is a cylinder with a bottom, and a vent hole is provided in the plate body of the piston housing 21. The piston housing 21 is movably disposed in the first housing 4, and an opening of the piston housing 21 faces a bottom plate of the first housing 4. The coil spring 25 is disposed between the piston housing 21 and the first housing 4, and the expansion and contraction direction of the coil spring 25 coincides with the movement direction of the piston housing 21. Preferably, the spiral spring 25 is a large-caliber spring and is disposed closely to the cylinder of the piston housing 21.

A piston rack 22 is integrally provided in the piston housing 21 and extends toward the bottom plate of the first housing 4, and a first engagement rack is provided on one side of the piston rack 22.

The pressing post rack 23 includes a pressing post and a second engagement rack integrally connected. The second engagement rack is disposed in the first housing 4, and the pressing post exposes the bottom plate of the first housing 4 through a through hole in the bottom plate of the first housing 4. The pressing column can slide back and forth in the through hole. Preferably, a sealing ring 8 is arranged between the pressing column and the through hole. As another preferable means, a pressing cap 7 is provided at the end of the pressing post exposed to the bottom plate of the first housing 4.

A gear frame 40 is integrally provided on the bottom plate of the first housing 4, and the gear 24 is provided on the gear frame 40 through a gear shaft. The first engagement rack and the second engagement rack are provided on opposite sides in the circumferential direction of the gear 24, respectively, and each engage with the gear 24. The end of the piston rack 22 is also provided with a catch.

The release mechanism 3 includes a click piece 30, a release piece 31, and a torsion spring 32. The clamping piece 31 is of a block-shaped structure in a concave shape, one side of the bottom of the clamping piece is pivoted on the gear frame 40 through a pin shaft, and a clamping groove is arranged at the inner side of the opening of one pivoted side. The catch groove can cooperate with the catch at the end of the piston rack 22 as described above.

The release member 31 is sheet-shaped and is arranged between the clamping member 30 and the bottom plate of the first housing 4. The body of the torsion spring 32 is fixed to the gear frame 40, one torsion arm of which is supported on the bottom plate of the first housing 4, and the other torsion arm presses the latch 30, pressing the release member 31 between the latch 30 and the bottom plate of the first housing 4.

The first housing 4 has an air inlet smaller than the release member 31 in size at a position corresponding to the release member 31, and the air inlet is covered by the release member 31.

The method of using the inhalation administration device of the present invention is as follows:

1. between the first housing 4 and the second housing 6, a vial 5 is placed such that the dosing valve button of the vial 5 is oriented towards the first housing 4. As a preferred means, the spout of the vial 5 may be connected to the vicinity of the mouthpiece of the second housing 6 using a conduit.

2. The first shell 4 is arranged at the upper part and the second shell 6 is arranged at the lower part, and the liquid medicine (medicine, additive, propellant and the like) in the medicine bottle 5 is uniformly mixed.

3. The pressing cap 7 is pressed down, the pressure accumulating mechanism 2 accumulates pressure, and the pressure accumulating process of the pressure accumulating mechanism 2 is as follows:

the pressing post rack 23 drives the gear 24 to rotate, drives the piston rack 22 and the piston shell 21 to move towards the bottom plate direction of the first shell 4, and the spiral spring 25 is compressed until the clamping hook at the tail end of the piston rack 22 clamps the clamping groove on the clamping piece 30 downwards.

4. The second housing 6 is up, the first housing 4 is down, and the medicine bottle 5 is freely supported on the piston housing 21. The air is exhausted as much as possible, and then the air is sucked slightly by the suction nozzle of the second housing 6, the release mechanism 3 releases the pressure accumulating mechanism 2, the pressure accumulating mechanism 2 releases rapidly, and the medicine is ejected.

The release mechanism 3 operates as follows:

The pressure in the accommodating space is lower than the atmospheric pressure due to air suction, when the pressure difference between the inside and the outside of the accommodating space is greater than the torsion force of the torsion spring 32, the external atmospheric pressure pushes the release member 31 to squeeze one end of the clamping member 30, and the clamping groove at the other end of the clamping member 30 is separated from the clamping hook at the tail end of the piston rack 22 due to the action of the pin shaft. The potential energy stored by the spiral spring 25 is released rapidly, the piston shell 21 is pushed to accelerate and strike the quantitative valve button on the medicine bottle 5, so that the quantitative valve is triggered, and the propellant in the medicine bottle 5 drives quantitative medicine to be ejected, and the quantitative medicine is brought into the respiratory system by the inhalation synchronization of a user (patient).

The inhalation drug administration device of the present invention has a unique structural design, and completely separates the hand operation of the user (patient) from the breathing rhythm of the user (patient). The triggering time of the medicine bottle quantitative valve is only determined by the inhalation of a user (patient), so that the synchronization of medicine ejection and the inhalation of the user (patient) is perfectly realized.

The foregoing examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims

1. An inhalation medication device, characterized in that:

including a pressure thruster, a first shell and a second shell;

The first shell is connected to the second shell to form a containing space, and the pressure thruster is arranged in the containing space;

The pressure thruster comprises a pressure storage mechanism and a release mechanism;

The pressure storage mechanism has two states: pressure storage and release;

In the pressure storage state, the pressure storage mechanism is engaged with the release mechanism; in the release state, the pressure storage mechanism is disengaged from the release mechanism;

When the pressure in the inhalation drug delivery device is lower than the external pressure, the atmospheric pressure drives the release mechanism to release the pressure storage mechanism;

The pressure storage mechanism includes a piston housing, a piston rack, a pressing column rack, a gear and a coil spring;

The piston housing is movably disposed in the first housing;

The piston rack is integrally disposed in the piston housing and extends toward the bottom plate of the first housing;

The piston rack and the pressing column rack are respectively arranged on two opposite sides of the gear in the circumferential direction, and are both meshed with the gear;

The coil spring is arranged between the first housing and the piston shell, and the expansion and contraction direction of the coil spring is consistent with the moving direction of the piston shell.

2. The inhalation medication device according to claim 1, characterized in that:

The pressing column rack comprises a pressing column and a second meshing rack connected in one piece;

The second meshing rack is disposed in the first housing, and the second meshing rack is meshed with the gear;

The pressing column is exposed from the first shell bottom plate through the through hole on the first shell bottom plate.

3. The inhalation medication device according to claim 2, characterized in that:

A sealing ring is provided between the pressing column and the through hole;

A pressing cap is provided at the end of the pressing column exposed from the bottom plate of the first shell.

4. The inhalation medication 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 frame via a gear shaft.

5. The inhalation medication device according to claim 4, characterized in that:

The release mechanism comprises a clamping member, a release member and a torsion spring;

The clamping member is a concave block structure, and one side of the bottom thereof is pivotally connected to the gear frame through a pin.

6. The inhalation medication device according to claim 5, characterized in that:

A hook is provided at the end of the piston rack;

The clamping member is provided with a clamping groove on the inner side of the opening on the side pivotally connected with the gear rack;

In the pressure storage state, the hook is engaged with the slot.

7. The inhalation medication device according to claim 5, characterized in that:

The release member is in sheet shape;

The release member is disposed between the clamping member and the bottom plate of the first shell;

When the pressure in the inhalation medication device is lower than the external pressure, the atmospheric pressure pushes the release member to squeeze the end of the clamping member away from the pivotal connection.

8. The inhalation medication device according to claim 7, characterized in that:

An air inlet smaller in size than the release member is provided at a position corresponding to the first housing bottom plate and the release member;

The air inlet is covered by the release member.

9. The inhalation medication device according to claim 5, characterized in that:

The main body of the torsion spring is fixed on the gear frame;

One torsion arm of the torsion spring is supported on the bottom plate of the first shell, and the other torsion arm presses the clamping member to press the release member tightly between the clamping member and the bottom plate of the first shell.