CN219110481U

CN219110481U - Structure improved capsule type dry powder inhaler

Info

Publication number: CN219110481U
Application number: CN202222737357.0U
Authority: CN
Inventors: 何明波; 朱雪冰; 周莉萍; 张伟
Original assignee: Chia Tai Tianqing Pharmaceutical Group Co Ltd
Current assignee: Chia Tai Tianqing Pharmaceutical Group Co Ltd
Priority date: 2022-10-18
Filing date: 2022-10-18
Publication date: 2023-06-02
Anticipated expiration: 2032-10-18

Abstract

The application relates to a capsule type dry powder inhaler with an improved structure, belonging to the field of medical appliances. The device comprises a cover cap, a suction nozzle, a plate with a capsule cavity fixed below, an operating mechanism with a puncture needle and a lower shell with an open top, wherein one side of the capsule cavity is provided with a guide plate, the guide plate is provided with a channel for the sliding connection of the operating mechanism, two ends of the guide plate are close to or propped against the lower shell, so that the connection between the plate and the lower shell is more stable, the stability of the inhaler structure is improved, and a more stable atomization effect is finally provided for inhalation administration of a patient.

Description

Structure improved capsule type dry powder inhaler

Technical Field

The utility model belongs to the field of medical instruments, and relates to a capsule type dry powder inhaler with an improved structure.

Background

At present, pulmonary inhalation administration is the best treatment mode for treating pulmonary diseases such as asthma, chronic obstructive pneumonia and the like, and further expands to the treatment of systemic diseases such as diabetes and the like in recent years, so that the market is huge. Pulmonary delivery requires the dispersion, nebulization and pulmonary delivery of the drug by means of specific delivery devices, and inhalers play a critical role in the pulmonary delivery system.

There are various inhalers including a single dose dry powder inhaler using capsules, in which powder is stored separately in advance in a single capsule, the capsules are distributed on a capsule plate, a patient firstly takes out the capsules from the capsule plate when using the inhaler, then puts the taken-out capsules into a capsule cavity of the dry powder inhaler, the capsules are pierced by pressing a button, the powder is inhaled into the patient through a discharge tube, and the patient can observe the condition in the capsule cavity through a window on a lower housing of the inhaler.

However, we have found that there are problems with the prior art capsule type dry powder inhalers in that the button is located in a recess formed in the rim of the lower housing, and that the plate and button can be removed from the lower housing when the plate is disengaged and pivoted away from the lower housing, which is particularly convenient, however, providing a recess allows the lower housing to become flexible, making it difficult to provide a reliable connection for the plate, especially when the inhaler is structurally stable after prolonged use, ultimately affecting the atomisation effect.

Disclosure of Invention

To solve the above problems, the present utility model provides a dry powder inhaler comprising: the capsule comprises a cover, a suction nozzle, a plate with a capsule cavity, an operating mechanism with a puncture needle and a lower shell with an open top, wherein the cover is used for covering the suction nozzle, an air inlet channel is arranged at the lower part of the capsule cavity, the upper part of the suction nozzle is open and is connected with the suction nozzle, a guide plate is arranged on one side of the capsule cavity and is provided with a channel for the operating mechanism to be in sliding connection, the plate is hinged with the lower shell and is buckled to the top of the lower shell, an opening at the top is arranged on one side of the lower shell far away from the hinge, the operating mechanism passes through the opening and is in sliding connection with the guide plate and can upwards pass through the opening so as to be moved out of the opening, the guide plate is arranged on one side of the capsule cavity close to the opening, and two ends of the guide plate are close to or propped against the lower shell.

Further, the plate is provided with protruding portions on two sides, two sides of the top of the lower shell are provided with matched concave portions, and the protruding portions are in snap fit engagement with the concave portions.

Further, the inner wall of the lower shell is provided with ribs which are longitudinally arranged.

Further preferably, the inner wall of the lower housing is provided with at least 2 ribs arranged longitudinally at one side close to the notch, respectively.

Further, both ends of the guide plate are abutted between the longitudinally arranged ribs of the lower case.

It is further preferred that both ends of the guide plate are snapped between the longitudinally arranged ribs of the lower housing.

Further, the inner wall of the lower shell is respectively provided with a bulge at one side close to the notch.

Further, both ends of the guide plate are abutted against the protrusions of the lower case.

Further, the inhaler further comprises an inner housing coupled to the interior cavity of the lower housing, the inner housing including a bottom.

Still further, both ends of the guide plate are abutted against the inner case, or against the bottom of the inner case.

According to the utility model, the two ends of the guide plate are close to or abutted against the lower shell, so that the stability of the inhaler structure is improved, and particularly, the connection between the plate and the lower shell is firmer, so that a more stable atomization effect is provided for inhalation administration of patients.

Drawings

For a better understanding of the utility model, the latter is explained in detail below with the aid of the accompanying drawings. In the accompanying drawings:

figure 1 shows an exploded view of a dry powder inhaler of the present utility model;

fig. 2 is a schematic view showing a state in which a lower housing and a guide plate of a dry powder inhaler of the present utility model are abutted against each other;

figure 3 shows a partial exploded view of a dry powder inhaler of the present utility model, comprising an inner housing (upper) and a lower housing (lower).

Detailed Description

The following detailed description is provided in connection with specific embodiments, but embodiments of the application are not limited thereto.

As shown in fig. 1-2, a dry powder inhaler in a specific embodiment of the present application comprises: the capsule comprises a cover 1, a suction nozzle 2, a plate 3 with a capsule cavity 31 fixed below, an operating mechanism 4 with a puncture needle 41 and a lower shell 5 with an open top, wherein the cover 1 is used for covering the suction nozzle 2, the lower part of the capsule cavity 31 is provided with an air inlet channel, the upper part of the air inlet channel is open and is connected with the suction nozzle 2, one side of the capsule cavity 31 is provided with a guide plate 32, the guide plate 32 is provided with a channel for the sliding connection of the operating mechanism 4, the plate 3 is hinged with the lower shell 5 and is buckled to the top of the lower shell 5, one side of the lower shell 5 far away from the hinge is provided with an open-top notch 51, the operating mechanism 4 passes through the notch 51 and is slidably connected with the guide plate 32 and can upwards pass through the notch 51 so as to be moved out of the notch 51, wherein the guide plate 32 is arranged on one side of the capsule cavity 31 close to the notch 51, and two ends of the guide plate 32 are close to or abutted on the lower shell 5.

In this embodiment, the lower housing 5 is provided with a notch 51 with an open top at a side far away from the hinge, so that the operating mechanism 4 can be conveniently removed from the lower housing 5, but due to the notch 51, the lower housing 5 becomes flexible, and as the number of times of use of the inhaler increases, the snap connection between the plate 3 and the lower housing 5 becomes unstable, thereby affecting the use of the inhaler by a patient and finally affecting the atomization effect. To solve this problem, as shown in fig. 2, when the plate 3 is snapped to the top of the lower housing 5 (the plate 3 is not shown), both ends of the guide plate 32 are abutted against the lower housing 5, so that the connection between the plate 3 and the lower housing 5 is more stable, thereby improving the stability of the whole inhaler structure. It will be appreciated that in other embodiments of the present application, the two ends of the guide plate 32 are close to the lower housing 5, and when the inhaler is undesirably deformed, the two ends of the guide plate 32 abut against the deformed lower housing 5, so that the object of the present application can be achieved.

In this embodiment, as shown in fig. 2, when the plate 3 is snapped onto the top of the lower housing 5, the capsule cavity 31 is sunk into the inner cavity of the lower housing 5, the guide plate 32 is disposed on one side of the capsule cavity 31 near the notch 51, and the guide plate 32 is quadrilateral or substantially quadrilateral, and its plane is parallel or substantially parallel to the plane of the notch 51. In other embodiments of the present application, the guide plate 32 may have other shapes, such as a polygon, a circular arc, even an irregular shape, etc., and the plane of the guide plate 32 and the plane of the notch 51 may be parallel or intersect each other.

In this embodiment, as shown in fig. 1-2, the guide plate 32 is provided with channels for sliding connection of the operating mechanism 4, and the channels are 2 rectangular through holes and are distributed in parallel on two sides of the capsule cavity 31. In other embodiments of the present application, the channel may be 1 or more through holes of other shapes, such as circular, square, other polygonal shapes, etc., and may be distributed in parallel or non-parallel on one or both sides of the capsule cavity 31.

As shown in fig. 1, in one embodiment of the present application, the plate 3 is provided with protrusions 3a,3b (3 b is not shown) on both sides, and matched recesses 5c,5d (5 d is not shown) on both sides of the top of the lower housing 5, and the protrusions 3a,3b are in snap engagement with the recesses 5c,5 d.

In this embodiment, the recesses 5c,5d are located on two sides of the top of the lower housing 5 near the notch 51, and the plate 3 is snapped onto the lower housing 5 by virtue of the inward force of the structure of the lower housing 5 itself. In other embodiments of the present application, the recesses 5c,5d may be located at any position on both sides of the top of the lower housing 5, and may even be located at the top of the notch 51, respectively, and it will be appreciated that, in order to make the protrusions 3a,3b snap-engage with the recesses 5c,5d, the positions of the corresponding protrusions 3a,3b on the plate member 3 are also adjusted accordingly. It will also be appreciated that in other embodiments of the present application, the plate 3 is provided with recesses on both sides and mating protrusions on both sides of the top of the lower housing 5, which protrusions snap engage with the recesses, as well as enabling a snap connection between the plate 3 and the lower housing 5.

As shown in fig. 1-2, in an embodiment of the present application, the inner wall of the lower housing 5 is provided with ribs arranged longitudinally, and the ribs extend from the top to the bottom of the lower housing 5, so as to improve the rigidity of the lower housing 5. It will be appreciated that in other embodiments of the present application, the ribs may be located anywhere from the top to the bottom of the lower housing 5.

In some embodiments of the present application, the inner wall of the lower housing 5 is provided with at least 2 ribs arranged longitudinally on a side close to the notch 51. In some preferred embodiments of the present application, the inner wall of the lower housing 5 is provided with 2 to 4 ribs arranged longitudinally on the side close to the notch 51, as shown in fig. 2, and in one preferred embodiment of the present application, the inner wall of the lower housing 5 is provided with 3 ribs arranged longitudinally on the side close to the notch 51.

As shown in fig. 2, in an embodiment of the present application, both ends of the guide plate 32 abut between the ribs arranged longitudinally of the lower case 5, so that the connection between the plate 3 and the lower case 5 is stable.

In an embodiment of the present application, the two ends of the guide plate 32 are fastened between the ribs of the lower housing 5 that are longitudinally arranged, so as to further improve the stability of the connection between the plate 3 and the lower housing 5.

In an embodiment of the present application, the inner wall of the lower housing 5 is provided with protrusions on a side close to the notch 51, respectively, and the protrusions increase the rigidity of the lower housing 5.

In an embodiment of the present application, the two ends of the guide plate 32 abut against the protrusions of the lower housing 5, so as to improve the stability of the connection between the plate 3 and the lower housing 5. It will be appreciated that both ends of the guide plate 32 may partially or entirely abut against some or all of the protrusions of the lower housing 5.

As shown in fig. 3, in an embodiment of the present application, the inhaler further comprises an inner housing 6 coupled to the inner cavity of the lower housing 5, the inner housing 6 comprising a bottom 61.

In this embodiment, as shown in fig. 3, the lower housing 5 is provided with two

openings

5a, 5b on both sides of the capsule cavity 31, the inhaler comprises an inner housing 6 joined to the inner cavity of the lower housing 5, the inner housing 6 comprising a bottom 61 and two

transparent sides

6a, 6b extending up along the bottom 61, the two

transparent sides

6a, 6b being fixed to the two

openings

5a, 5b, respectively, so as to constitute a window of the capsule cavity 31. The inner case 6 applies forces to the lower portion and the side wall of the lower case 5, respectively, thereby stabilizing the structure of the lower case 5.

In one embodiment of the present application, both ends of the guide plate 32 abut against the inner housing 6. In another embodiment of the present application, both ends of the guide plate 32 abut against the bottom 61 of the inner housing 6.

Those skilled in the art will recognize that the scope of the present application is not limited to the various embodiments and examples described above, but is capable of various modifications, substitutions, or rearrangements without departing from the spirit of the application, which are intended to be within the scope of the present application.

Claims

1. A dry powder inhaler, comprising: a cover cap (1), a suction nozzle (2), a plate (3) with a capsule cavity (31) fixed below, an operating mechanism (4) with a puncture needle (41) and a lower shell (5) with an open top,

the cover cap (1) is used for covering the suction nozzle (2),

the lower part of the capsule cavity (31) is provided with an air inlet channel, the upper part of the capsule cavity is open and is jointed with the suction nozzle (2), one side of the capsule cavity (31) is provided with a guide plate (32), the guide plate (32) is provided with a channel for the sliding connection of the operating mechanism (4),

the plate (3) is hinged with the lower shell (5) and is buckled to the top of the lower shell (5),

the lower shell (5) is provided with a notch (51) with an open top at one side far away from the hinge,

the operating mechanism (4) is connected with the guide plate (32) in a sliding way through the notch (51) and can pass through the notch (51) upwards so as to be moved out of the notch (51),

the capsule is characterized in that the guide plate (32) is arranged on one side of the capsule cavity (31) close to the notch (51), and two ends of the guide plate (32) are close to or abutted against the lower shell (5).

2. Dry powder inhaler according to claim 1, characterized in that the plate (3) is provided with protrusions (3 a,3 b) on both sides, the top of the lower housing (5) is provided with mating recesses (5 c,5 d) on both sides, the protrusions (3 a,3 b) being in snap engagement with the recesses (5 c,5 d).

3. A dry powder inhaler according to claim 1, characterized in that the inner wall of the lower housing (5) is provided with longitudinally arranged ribs.

4. A dry powder inhaler according to claim 3, characterized in that the inner wall of the lower housing (5) is provided with at least 2 longitudinally arranged ribs, respectively, on the side adjacent to the gap (51).

5. The dry powder inhaler according to claim 4, characterized in that both ends of the guide plate (32) rest between longitudinally arranged ribs of the lower housing (5).

6. The dry powder inhaler according to claim 4, characterized in that the two ends of the guide plate (32) are snapped between longitudinally arranged ribs of the lower housing (5).

7. Dry powder inhaler according to claim 1, characterized in that the inner wall of the lower housing (5) is provided with protrusions on the side close to the indentations (51), respectively.

8. The dry powder inhaler according to claim 7, characterized in that both ends of the guide plate (32) rest against protrusions of the lower housing (5).

9. The dry powder inhaler according to claim 1, characterized in that the inhaler further comprises an inner housing (6) joined to the inner cavity of the lower housing (5), the inner housing (6) comprising a bottom (61).

10. A dry powder inhaler according to claim 9, characterized in that both ends of the guide plate (32) rest against the inner housing (6) or against the bottom (61) of the inner housing (6).