CN212166282U - Dry powder inhalation device - Google Patents

Abstract

The utility model provides a dry powder suction device, which comprises a shell, wherein one side of the shell is provided with an opening, and the other side of the shell is provided with a mouthpiece; the opening is internally provided with a detachable dry powder nest, the dry powder nest is provided with powder storage cavities which are uniformly distributed along the circumferential direction of the dry powder nest, and the center of the dry powder nest is provided with a mixing channel which is communicated with the mouthpiece; be equipped with removable setting and rotatable regulation lid on the opening, it is equipped with the through-hole that sets up to leading to with mixing channel to adjust to cover the center, adjust to cover still be equipped with air inlet and the negative pressure passageway that stores up powder chamber intercommunication, the air inlet is located to adjust and covers and is close to outer fringe position department, the negative pressure passageway is located to adjust with the one end that stores up powder chamber intercommunication and covers outer fringe position department of keeping away from, the negative pressure passageway extends to through-hole central point for the one end with storing up powder chamber intercommunication and puts and be equipped with the negative pressure bowl, the mouth is stung to the negative pressure bowl mouth. The utility model has the advantages of simple structure, small volume, good mixing effect and convenient replacement of the supplementary powder.

Description

Dry powder inhalation device

Technical Field

The utility model relates to an inhaler field, concretely relates to dry powder inhalation device.

Background

The powder of the existing powder inhaler is generally packaged in a capsule form, before use, 1 capsule is taken and put into a puncturing groove of a special inhaler, a finger is pressed to press a button, two ends of the capsule are punctured by fine needles respectively, then the mouth inhaler is put into the deep part of an oral cavity, the mouth inhaler is used for forcefully inhaling, the capsule is rapidly rotated along with airflow, the powder in the capsule is sprayed out of a capsule shell and enters a respiratory tract along with the airflow, the overall structural design of the inhaler is too complex, the capsule is inconvenient to carry, the capsule is easy to lose and other accidents occur, and some powder inhalers can store the capsule in the inhaler, the mixing effect of the powder and the air during inhalation needs to be considered during the design of the inhaler, so the overall volume of the inhaler is larger, and the carrying is inconvenient.

SUMMERY OF THE UTILITY MODEL

Based on the above problem, the utility model aims to provide a simple structure, small in size, mixed effect are good, be convenient for change the dry powder suction device who supplements the powder.

Aiming at the problems, the following technical scheme is provided: a dry powder inhalation device comprises a shell, wherein one side of the shell is provided with an opening, and the other side of the shell is provided with a mouthpiece communicated with the opening; a detachable dry powder nest is arranged in the opening, powder storage cavities are uniformly distributed along the circumferential direction of the dry powder nest at the outer edge of one surface of the dry powder nest, which is back to the mouthpiece, and a mixing channel communicated with the mouthpiece is arranged in the center of the dry powder nest; still be equipped with removable setting on the opening, block in casing outer wall can be for casing pivoted regulation lid, the regulation is covered the center and is equipped with the through-hole that sets up with the hybrid channel to leading to, the regulation is covered still to be equipped with and stores up air inlet and the negative pressure passageway of powder chamber intercommunication, the air inlet is located to adjust and covers and is close to outer fringe position department, the negative pressure passageway is located to adjust the lid with the one end that stores up powder chamber intercommunication and keeps away from outer fringe position department, the negative pressure passageway extends to through-hole central point and puts and be equipped with the negative pressure bowl for the one end with storing up powder chamber intercommunication, the mouth is bitten to negative pressure bowl mouth.

In the structure, after powder is stored in the powder storage cavity, the dry powder nest is arranged in the shell, the adjusting cover is covered to finish installation, the mouthpiece is contained in the mouth to suck air forcibly when in use, at the moment, air enters from the through hole, enters into the lung from the mouthpiece after passing through the mixing channel, meanwhile, the negative pressure bowl positioned at the through hole generates pressure difference due to the flowing of the air, so that the air enters into the powder storage cavity from the air inlet to impact the powder in the powder storage cavity and is pumped to the negative pressure bowl through the negative pressure channel to perform secondary mixing along with the airflow of the through hole, the mixing effect is effectively ensured, meanwhile, the air enters into the powder storage cavity from the air inlet to impact the powder storage cavity to effectively ensure that the air forms a U-shaped flowing direction in the powder storage cavity, the powder in the powder storage cavity can be completely pumped out and can be stored after use, when in next use, the shell is firstly placed in a mode that the mouthpiece faces downwards and the adjusting cover faces upwards to, then the adjusting cover is rotated to enable the air inlet and the negative pressure channel to be aligned with the next powder storage cavity, or the adjusting cover is rotated to enable the air inlet and the negative pressure channel to be aligned with the next powder storage cavity while air suction is carried out, so that the situation that powder is accidentally spilled from the air inlet is avoided; has the advantages of good mixing effect, compact volume and capability of quantitatively inhaling powder.

The utility model discloses further set up to, the dry powder nest is equipped with the spacer pin towards opening bottom surface one side, the opening bottom surface be equipped with the spacing hole of spacer pin adaptation.

In the structure, the limiting pin is matched with the limiting hole, so that the circumferential position between the dry powder nest and the shell can be effectively ensured, and the condition that the dry powder nest is driven to synchronously rotate when the adjusting cover rotates is avoided.

The utility model discloses further set up to, the mixing channel inner wall is equipped with a plurality of vortex paddles that set up along its circumference direction spiral, the vortex paddle is less than the mixing channel internal diameter from mixing channel inner wall to mixing channel the central axis's radial extension length and makes it constitute the air current at the mixing channel center and accelerate the passageway.

In the structure, the turbulence blades can generate third turbulence mixing when the air carries the powder through the mixing channel, the airflow accelerating channel can reduce the airflow flowing resistance at the central position of the mixing channel, and the airflow speed at the central position of the mixing channel is improved, so that the position of a negative pressure bowl opening right opposite to the airflow accelerating channel can generate enough negative pressure.

The utility model discloses further set up to, casing outer wall is equipped with outer slot, it is equipped with towards the lock retaining ring that the seaming direction extends to adjust the lid outer fringe, lock retaining ring inner wall is equipped with the bulge loop with outer slot block.

In the structure, the outer groove and the convex ring are clamped to fix the adjusting cover, and the adjusting cover can rotate relative to the shell.

The utility model discloses further set up to, lock retaining ring outer wall is equipped with the friction granule that the equipartition set up on its circumferential direction along.

In the above structure, the friction particles can increase the friction force when the adjusting cover is rotationally adjusted.

The utility model discloses further set up to, it is protruding to adjust the one side that the lid faced the dry powder nest to be equipped with the location, the dry powder nest towards the terminal surface department of adjusting lid one end, adjacent store up between the powder chamber be equipped with the protruding adaptation in location, adjust lid turned position, make its air inlet and negative pressure passageway can accurately aim at the location of storing up the powder chamber when switching and store up the powder chamber sunken.

In the structure, the adjusting cover can be combined again after being staggered with the positioning recess when rotating, so that gear resistance is generated, a user can be reminded of whether the position of the user is adjusted in place, the adjusting cover can be made of transparent plastic, and the current powder storage capacity state of each powder storage cavity on the dry powder nest can be checked conveniently.

The utility model discloses further set up to, be equipped with the filter screen that admits air in the air inlet.

In the structure, the air inlet filter screen can effectively prevent foreign matters from entering the air inlet.

The utility model discloses further set up to, be equipped with dry powder screening filter screen in the difficult to articulate.

In the structure, the dry powder screening filter screen can prevent foreign matters from entering the oral cavity from the through holes and can block powder which is agglomerated accidentally.

The utility model discloses further set up as, the one end of the casing is dorsad to the mouthpiece, and its outer wall is equipped with the interlock ring.

In the structure, the outline of the occlusion ring is larger than that of the mouthpiece, so that the risk of accidental falling from the mouth in the use process can be reduced.

The utility model discloses further set up to, adjust lid and dry powder nest laminating and store up whitewashed chamber with this sealed separation.

In the structure, the adjusting cover and the end face of the dry powder nest are in close fit and contact with each other.

The utility model has the advantages that: after powder is stored in the powder storage cavity, the dry powder nest is placed in the shell, the adjustment cover is covered to finish installation, the mouthpiece is contained in the mouth to suck air forcibly when in use, at the same time, air enters from the through hole and enters into the lung from the mouthpiece after passing through the mixing channel, meanwhile, the negative pressure bowl positioned at the through hole generates pressure difference due to the flowing of the air, so that the air enters into the powder storage cavity from the air inlet to impact the powder in the powder storage cavity and is pumped to the negative pressure bowl through the negative pressure channel to carry out secondary mixing along with the airflow of the through hole, the mixing effect is effectively ensured, meanwhile, the air enters into the powder storage cavity from the air inlet to impact the powder storage cavity to effectively ensure that the air forms a U-shaped flowing direction in the powder storage cavity, the powder in the powder storage cavity can be completely pumped out, the powder can be stored after use, when in next use, the shell is firstly placed in a mode that the mouthpiece faces downwards and the adjustment, then the adjusting cover is rotated to enable the air inlet and the negative pressure channel to be aligned with the next powder storage cavity, or the adjusting cover is rotated to enable the air inlet and the negative pressure channel to be aligned with the next powder storage cavity while air suction is carried out, so that the situation that powder is accidentally spilled from the air inlet is avoided; has the advantages of good mixing effect, compact volume and capability of quantitatively inhaling powder.

Drawings

Fig. 1 is a schematic view of the front overall structure of the present invention.

Fig. 2 is a schematic view of the front full-section structure of the present invention.

Fig. 3 is a schematic view of the back full-section structure of the present invention.

Fig. 4 is a schematic diagram of the front explosion structure of the present invention.

Fig. 5 is a schematic diagram of the front full-section explosion structure of the present invention.

Fig. 6 is a schematic diagram of the back explosion structure of the present invention.

The reference numbers in the figures mean: 10-a housing; 11-opening; 12-a mouthpiece; 121-dry powder screening filter screen; 122-snap rings; 13-a limiting hole; 14-outer groove; 20-dry powder nest; 21-powder storage cavity; 22-a mixing channel; 221-spoiler blades; 222-an airflow accelerating channel; 23-a spacing pin; 24-a positioning recess; 30-adjusting the cover; 31-a through hole; 32-an air inlet; 321-an air inlet filter screen; 33-a negative pressure channel; 331-negative pressure bowl; 34-fastening retainer rings; 341-convex ring; 342-friction particles; 35-positioning projection.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

Referring to fig. 1 to 6, a dry powder inhalation device as shown in fig. 1 to 6 comprises a housing 10, wherein the housing 10 is provided with an opening 11 on one side and a mouthpiece 12 communicating with the opening 11 on the other side; a detachable dry powder nest 20 is arranged in the opening 11, powder storage cavities 21 uniformly distributed along the circumferential direction of one surface of the dry powder nest 20, which is back to the mouthpiece 12, are arranged at the outer edge of the dry powder nest 20, and a mixing channel 22 communicated with the mouthpiece 12 is arranged in the center of the dry powder nest 20; still be equipped with removable setting on the opening 11, block in casing 10 outer wall can be for casing 10 pivoted regulation lid 30, it is equipped with the through-hole 31 that sets up to leading to with mixing channel 22 to adjusting to cover 30 the center, still be equipped with on the regulation lid 30 with store up the air inlet 32 and the negative pressure passageway 33 of powder chamber 21 intercommunication, the air inlet 32 is located and adjusts lid 30 and is close to outer fringe position department, negative pressure passageway 33 is located the regulation lid 30 with the one end that stores up powder chamber 21 intercommunication and keeps away from outer fringe position department, negative pressure passageway 33 extends to through-hole 31 central point and is equipped with negative pressure bowl 331 for the one end with store up powder chamber 21 intercommunication, negative pressure bowl 331 bowl mouth is towards mouthpiece 12.

In the structure, after powder is stored in the powder storage cavity 21, the dry powder nest 20 is placed in the shell 10, the adjustment cover 30 is covered to finish installation, the mouthpiece 12 is contained in the mouth to suck air forcibly when in use, at the moment, air enters from the through hole 31 and enters the lung from the mouthpiece 12 after passing through the mixing channel 22, meanwhile, the negative pressure bowl 331 positioned at the through hole 31 generates pressure difference due to the flowing of the air, so that the air enters the powder storage cavity 21 from the air inlet 32 to impact the powder in the powder storage cavity 21 and is pumped to the negative pressure bowl 331 through the negative pressure channel 33, secondary mixing is carried out along with the airflow of the through hole 31, the mixing effect is effectively ensured, meanwhile, the air enters the powder storage cavity 21 from the air inlet 32 and impacts the powder storage cavity 21 to effectively ensure that the air forms a U-shaped flowing trend in the powder storage cavity 21, the powder in the powder storage cavity 21 can be completely pumped out, the powder can be stored after use is finished, and when the next use is carried out, The adjusting cover 30 is placed in an upward mode to enable the powder to be gathered at the bottom of the powder storage cavity 21, then the adjusting cover 30 is rotated to enable the air inlet 32 and the negative pressure channel 33 of the adjusting cover to be aligned with the next powder storage cavity 21, or the adjusting cover 30 is rotated to enable the air inlet 32 and the negative pressure channel 33 of the adjusting cover to be aligned with the next powder storage cavity 21 while air suction is carried out, so that the situation that the powder is accidentally spilled from the air inlet 32 is avoided; has the advantages of good mixing effect, compact volume and capability of quantitatively inhaling powder.

In this embodiment, a limiting pin 23 is disposed on one side of the dry powder nest 20 facing the bottom surface of the opening 11, and a limiting hole 13 adapted to the limiting pin 23 is disposed on the bottom surface of the opening 11.

In the structure, the limiting pin 23 is matched with the limiting hole 13, so that the circumferential position between the dry powder nest 20 and the shell 10 can be effectively ensured, and the condition that the dry powder nest 20 is driven to synchronously rotate when the adjusting cover 30 rotates is avoided.

In this embodiment, the inner wall of the mixing channel 22 is provided with a plurality of turbulence blades 221 spirally arranged along the circumferential direction of the mixing channel, and the radial extension length of the turbulence blades 221 from the inner wall of the mixing channel 22 to the central axis of the mixing channel 22 is smaller than the inner diameter of the mixing channel 22, so that the turbulence blades form an airflow accelerating channel 222 at the center of the mixing channel 22.

In the above structure, the turbulent blades 221 can generate a third turbulent mixing when the air carries the powder through the mixing channel 22, and the airflow accelerating channel 222 can reduce the airflow resistance at the center of the mixing channel 22, and increase the airflow speed at the center of the mixing channel 22, so as to ensure that the bowl opening of the negative pressure bowl 331 facing the airflow accelerating channel 222 can generate sufficient negative pressure.

In this embodiment, the outer wall of the housing 10 is provided with an outer groove 14, the outer edge of the adjusting cover 30 is provided with a fastening retainer 34 extending toward the mouthpiece 12, and the inner wall of the fastening retainer 34 is provided with a convex ring 341 fastened with the outer groove 14.

In the above structure, the outer groove 14 is engaged with the convex ring 341 to fix the adjustment cover 30 and ensure that it can rotate relative to the housing 10.

In this embodiment, the outer wall of the fastening retainer ring 34 is provided with friction particles 342 uniformly distributed along the circumferential direction thereof.

In the above structure, the friction particles 342 may increase the friction when the adjustment cap 30 is rotatably adjusted.

In this embodiment, a positioning protrusion 35 is disposed on a surface of the adjusting cover 30 facing the dry powder nest 20, and a positioning recess 24 adapted to the positioning protrusion 35 is disposed between adjacent powder storage cavities 21 on an end surface of the dry powder nest 20 facing one end of the adjusting cover 30 to control a rotation position of the adjusting cover 30, so that the air inlet 32 and the negative pressure channel 33 can be accurately aligned to the powder storage cavity 21 when the powder storage cavities 21 are switched.

In the above structure, the adjusting cover 30 can be combined again after being staggered with the positioning recess 24 when rotating, so as to generate gear resistance, and be convenient for reminding a user whether to adjust the position in place, the adjusting cover 30 can be made of transparent plastic, and is convenient for checking the current powder storage state of each powder storage cavity 21 on the dry powder nest 20.

In this embodiment, an air inlet filter 321 is disposed in the air inlet 32.

In the above structure, the air inlet strainer 321 can effectively prevent foreign matters from entering the air inlet 32.

In this embodiment, a dry powder screening sieve 121 is disposed in the mouthpiece 12.

In the above structure, the dry powder screening screen 121 can prevent the foreign matter from entering the inlet chamber from the through hole 31 and simultaneously block the powder which is accidentally agglomerated.

In this embodiment, the mouthpiece 12 faces away from the end of the housing 10 and has an outer wall provided with an engaging ring 122.

In the above configuration, the snap ring 122 is contoured to be larger than the mouthpiece to reduce the risk of accidental removal from the mouth during use.

In this embodiment, the adjusting cover 30 is attached to the dry powder nest 20 to seal and obstruct the powder storage cavity 21.

In the above structure, the adjusting cover 30 and the end face of the dry powder nest 20 are in close fit contact with each other.

The utility model has the advantages that: after powder is stored in the powder storage cavity 21, the dry powder nest 20 is placed in the shell 10, the adjusting cover 30 is covered to finish installation, the mouthpiece 12 is contained in the mouth to suck air forcibly when in use, at the moment, air enters from the through hole 31 and enters the lung from the mouthpiece 12 after passing through the mixing channel 22, meanwhile, the negative pressure bowl 331 positioned at the through hole 31 generates pressure difference due to the flowing of the air, so that the air enters the powder storage cavity 21 from the air inlet 32 to impact the powder in the powder storage cavity 21 and is pumped to the negative pressure bowl 331 through the negative pressure channel 33, secondary mixing is carried out along with the airflow of the through hole 31, the mixing effect is effectively ensured, meanwhile, the air enters the powder storage cavity 21 from the air inlet 32 to impact the powder storage cavity 21, the air can be effectively ensured to form a U-shaped flowing trend in the powder storage cavity 21, the powder in the powder storage cavity 21 can be completely pumped out, the powder can be stored after use is finished, and when the next use is, The adjusting cover 30 is placed in an upward mode to enable the powder to be gathered at the bottom of the powder storage cavity 21, then the adjusting cover 30 is rotated to enable the air inlet 32 and the negative pressure channel 33 of the adjusting cover to be aligned with the next powder storage cavity 21, or the adjusting cover 30 is rotated to enable the air inlet 32 and the negative pressure channel 33 of the adjusting cover to be aligned with the next powder storage cavity 21 while air suction is carried out, so that the situation that the powder is accidentally spilled from the air inlet 32 is avoided; has the advantages of good mixing effect, compact volume and capability of quantitatively inhaling powder.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations of the above assumption should also be regarded as the protection scope of the present invention.

Claims (10)

1. A dry powder inhalation device comprising a housing, characterized in that: one side of the shell is provided with an opening, and the other side of the shell is provided with a mouthpiece communicated with the opening; a detachable dry powder nest is arranged in the opening, powder storage cavities are uniformly distributed along the circumferential direction of the dry powder nest at the outer edge of one surface of the dry powder nest, which is back to the mouthpiece, and a mixing channel communicated with the mouthpiece is arranged in the center of the dry powder nest; still be equipped with removable setting on the opening, block in casing outer wall can be for casing pivoted regulation lid, the regulation is covered the center and is equipped with the through-hole that sets up with the hybrid channel to leading to, the regulation is covered still to be equipped with and stores up air inlet and the negative pressure passageway of powder chamber intercommunication, the air inlet is located to adjust and covers and is close to outer fringe position department, the negative pressure passageway is located to adjust the lid with the one end that stores up powder chamber intercommunication and keeps away from outer fringe position department, the negative pressure passageway extends to through-hole central point and puts and be equipped with the negative pressure bowl for the one end with storing up powder chamber intercommunication, the mouth is bitten to negative pressure bowl mouth.

2. A dry powder inhalation device according to claim 1, wherein: the dry powder nest is provided with a limiting pin on one side facing the bottom surface of the opening, and the bottom surface of the opening is provided with a limiting hole matched with the limiting pin.

3. A dry powder inhalation device according to claim 1, wherein: the mixing channel inner wall is equipped with a plurality of vortex paddles that set up along its circumference direction spiral, the vortex paddle is less than the mixing channel internal diameter from mixing channel inner wall to mixing channel the central axis's radial extension length and makes it constitute the air current at mixing channel center and accelerate the passageway.

4. A dry powder inhalation device according to claim 1, wherein: the outer wall of the shell is provided with an outer groove, the outer edge of the adjusting cover is provided with a buckling check ring extending towards the direction of the mouthpiece, and the inner wall of the buckling check ring is provided with a convex ring clamped with the outer groove.

5. A dry powder inhalation device according to claim 4, wherein: the outer wall of the buckling check ring is provided with friction particles uniformly distributed along the circumferential direction of the buckling check ring.

6. A dry powder inhalation device according to claim 1, wherein: the side of the adjusting cover facing the dry powder nest is provided with a positioning bulge, and the end face of the dry powder nest facing one end of the adjusting cover is provided with a positioning recess which is matched with the positioning bulge and is used for controlling the rotating position of the adjusting cover so that the air inlet and the negative pressure channel can be accurately aligned to the powder storage cavity when the powder storage cavity is switched.

7. A dry powder inhalation device according to claim 1 or 6, wherein: an air inlet filter screen is arranged in the air inlet.

8. A dry powder inhalation device according to claim 1, wherein: and a dry powder screening filter screen is arranged in the mouthpiece.

9. A dry powder inhalation device according to claim 1, wherein: the mouth piece is back to one end of the shell, and the outer wall of the mouth piece is provided with a meshing ring.

10. A dry powder inhalation device according to claim 1, wherein: the adjusting cover is attached to the dry powder nest so as to seal and obstruct the powder storage cavity.

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