WO1995029723A1

WO1995029723A1 - Inhaler

Info

Publication number: WO1995029723A1
Application number: PCT/EP1995/001669
Authority: WO
Inventors: Karl-Heinz Rolle
Original assignee: Transcoject Marketing Gmbh
Priority date: 1994-05-03
Filing date: 1995-05-03
Publication date: 1995-11-09
Also published as: AU2523795A; DE4415462C1

Abstract

The aim of the invention is to improve the operating characteristics, in particular the reliability, of an inhaler for dispensing substances in powder form, in particular medicaments (4), while also simplifying the design. The inhaler in question is provided with a suction air channel (9) which runs from an air inlet channel (8) to a mouthpiece (13), a reservoir chamber (3) for the substance, a metering chamber (7) mounted in a rotary disk valve (5), said metering chamber dispensing a specified quantity (4) of the substance from the reservoir chamber (3) into the vicinity of a point (Ü) of transfer to the suction air flow (a). To achieve the improvement, it is proposed that a sealing cap (16) which covers the mouthpiece (13) should be provided as an operating grip (B) for the rotary disk valve (5).

Description

Inhaler

field of use

The invention relates to an inhaler for powdery substances, in particular medicament substances, with a suction air duct leading from an air inlet duct to a mouthpiece, a storage chamber for the substance, and a metering chamber arranged in a rotary slide valve for dividing a certain quantity of substance from the storage chamber into the area of a transfer point to the suction air flow.

State of the art

An inhaler of this type is known from dεr, DE-GM 80 02 702. There, the housing-side attachment of the mouthpiece serves as an actuation handle for displacing the rotary valve. The latter can be rotated in a latched manner, but can nevertheless create a potential for an overdose for forgetful persons. The suction air duct leading to the mouthpiece is at one end and the air inlet duct is at the other end of the inhaler.

Task, solution, advantages

The object of the invention is to design a generic inhaler which is more advantageous in use, in particular safer in use, even with a structural simplification thereof. This object is achieved by the invention specified in claim 1.

The subsequent claims indicate further advantageous configurations of the inhaler.

As a result of such an embodiment, an inhaler of the generic type is created which is distinguished by increased safety in use, has a simple structure and is easier to control in its use. The dosing quantity is provided automatically and between each release requires the handling to be carried out in a manner typical for the use. This is tied to the function of a cap. The whole is achieved by a closure cap overlapping the mouthpiece as an operating handle for the rotary slide valve. The closed end position of the functionally actuated closure cap is defined exactly as well as the opening position forming the release of the closure cap. To this extent, the dosing chamber of the rotary slide moved back and forth forms the precise transfer point of the dosing substance to the suction air flow. It also proves to be advantageous that the outer surface of the suction air duct forms the bearing for the rotary valve. The corresponding tube thus has a further function. Furthermore, it proves to be advantageous that the closure cap is designed as a screw cap and the screw thread path corresponds to the rotary slide action path, the metering chamber in the unscrewed position of the closure cap in the area of the transfer point and in the open position. screwed position is covering the interior of the pantry. Since the transfer point is implemented here as a single point, there remains a rather large range of rotation angles for the corresponding loading of the metering chamber. Likewise, in order to achieve the same partial quantities, it proves to be advantageous for the metering chamber to undermine (fixed) wiping fingers which protrude into the storage chamber. Corresponding wiping fingers make an excellent contribution to the residue-free delivery of the substance, even if the inhaler is brought into an exaggerated inclined position. The rotary movement of the screw cap is transferred into a rotary drive of the rotary slide valve by means of a claw coupling which engages when the screw cap is screwed on, between the screw cap and the rotary valve.

Moreover, an advantageous design feature is that the rotary slide valve consists of a disc carrying the dosing chamber as a trough and a guide sleeve arranged thereon, which has at its free end one part of the claw coupling, the other part of which sits at the front edge of a bushing which is centrally located in the closure cap is arranged and in the interior of which the mouthpiece plunges in a plug-sealed manner. Good guidance of the rotatably mounted parts also results from the fact that the guide sleeve runs on a central tube that forms the suction air channel and ends in the mouthpiece. In order to avoid an exposed position of the parts forming the claw coupling, the procedure is further such that the claws of the guide sleeve are arranged sunk relative to the upper edge of the housing and the claws of the The closure cap is also lowered relative to the edge of the cap. Above all, the recess on the container side prevents contact with the lips of the suction mouth. Returning to the metering area, the invention then proposes that the transfer point to the vertex area on the rotary slide valve is arranged in the area of a bypass to the air inlet channel. Such a bypass designed as a secondary channel brings about a high degree of discharge effect of the substance supplied in the trough, including a high swirl effect. The bypass duct is preferably smaller in cross section than the air inlet duct. The metering chamber expediently runs tangentially to the arc path of the bypass air flow in the region of curvature of the apex of the bypass channel. The corresponding bypass flows from above into the trough, i.e. the metering chamber. It is also advantageous that the air inlet duct and the suction air duct run and are connected to one another in accordance with the legs of a U, the U web being designed as an arc. Such a bend-like deflection brings good flow behavior. Overall, the air inlet and air outlet are concentrated on one end region of the housing. The corresponding, convex channel profile seen from the bottom leaves free space at least laterally in the case of an elongated housing. This is used by a desiccant chamber arranged below the U-bridge. In order to ensure, in particular, that a precisely reproducible amount of substance is obtained and retained up to the transfer point with respect to the rotary slide valve, it proves to be advantageous that on the underside of the rotary slide valve Disk stops are provided for limiting the angle of rotation, one end of which determines the position of the trough in the transfer point. In order to create the way for the mentioned bypass flow without restricting the rotational ability of the set-up parts, the construction is carried out in such a way that the air inlet duct is arranged in the interior of a hollow longitudinal rib projecting outwardly like a bay window from the otherwise cylindrical housing. Since the transfer point is located in this area, it is expedient to form at least the outer wall of the oriel-like longitudinal rib mentioned from transparent, at least translucent material. Of course, the housing as a whole can be made of transparent material, with a clear view of the storage space on all sides for checking the fill level. The U-shape of the flow path indicated above then favors further development in that the closure cap closes both the mouthpiece and the inlet opening of the air inlet duct. A particularly swirl-friendly design of the transfer point results from the measure that the end region of the bypass channel is designed as a slot which opens into the bottom surface of the trough or dosing chamber above a curved flank. The correspondingly concave flank deflects the downward flow in the slot area into the plane of the bottom surface, as a result of which the powdery substance is practically undercut and driven out of the metering chamber and then entrained in the main flow, along with an increased vacuum situation occurring there . The inhaler is further characterized by a concentric one for the bushing of the sealing cap seated sealing collar, which rests against the inside of the housing neck equipped with a screw thread on the outside. As a result, the product-protecting function is optimized. A simple and effective means of taking identically reproducible partial quantities from the stock is further achieved by the scraper fingers having a scraper flank that rises at an angle to the direction of screwing. It is also proposed that the desiccant chamber be closed by a screw bottom of the housing. This creates an advantageous prerequisite for the fact that what has been submitted can be inserted and removed through the screw bottom opening of the housing. Part of this set-up is an insert comprising the guide sleeve, which is in a rotationally fixed plug-in connection to the housing. This use assumes further functions, one of which is that it also forms the bypass with a depression or channel. An additional function-expanding measure consists in the fact that the insert has a transverse wall on the housing neck side, which leaves a window facing the bypass channel against a corresponding windowed ring wall of the housing. In the joint between the above-mentioned transverse wall and the annular wall, the anti-rotation means can be implemented, for example a pin engagement or the like. For reloading the inhaler, it proves to be advantageous for the transverse wall to be seated on a tube which supports the guide sleeve and which, on the end facing away from the transverse wall, extends to the stationary ends extending to the inner wall of the housing. streiffinger wears. The items otherwise removed for refilling the storage chamber then no longer act as a guide; the corresponding bottom zone of the insert is therefore secured against tipping by the wiping fingers. In this context, it proves to be advantageous that the rotary slide disc which comes in front of the end on the metering chamber side forms the closing cover of the refillable storage chamber, the end fingers of the scraper fingers forming the radial support of the insert.

Brief description of the drawings

The subject matter of the invention is explained in more detail below with reference to an exemplary embodiment illustrated in the drawing. It shows:

1 the inhaler in vertical section with the cap screwed on,

2 shows the section along line II-II in Fig. 1,

3 shows a section similar to FIG. 1, but with the closure cap screwed on, that is to say ready for use,

4 shows the top view of FIG. 3,

Fig. 5 through a vertical section through 90 ° the inhaler with the screw cap partially shown, unscrewed,

6 shows the section along line VI-VI in FIG. 5,

7 shows an enlarged extract of the dosing chamber when a wiping finger undershoots with an inclined scraper flank,

8 shows the housing of the inhaler turned upside down in the refill position,

9 is a top view of this,

10 the side view of the devices evacuated for refilling the pantry.

Detailed description of the invention and best way to carry out the invention

The inhaler 1 designed as a pocket device has a basically circular cross-section, cylindrical housing 2. The latter can be made entirely or partially of transparent material.

The inhaler 1 comprises a so-called dispersing part A and a metering part B. Dosing part B includes a refillable storage chamber 3. Storage chamber 3 contains a powdery substance, in particular medicinal substance 4.

A rotary slide valve 5 forms the bottom end of the storage chamber 3 of the metering device 1 shown in the standing position. It has the shape of a disk, which extends with its cylindrical periphery to the cylindrical inner wall 6 of the housing 2.

A metering chamber 7 is located on the upper side of the rotary slide valve 5 facing the storage space 3. It is formed by a trough that slopes slightly towards the periphery.

The metering chamber 7 extends in the region of a transition point Ü of the inhaler 1. Here is a specific, always exactly reproducible, from the stock split ab¬ amount of substance 4 'to the transition point Ü passie ^r end suction air a given. Said suction air .. ma passes through an air inlet duct 8, which merges into an opposing suction air duct 9. The suction air duct 9 runs centrally; it extends in the longitudinal central axis xx of the inhaler l. Air inlet duct 8 and suction air duct 9 extend in correspondence with the legs of a U to one another and are connected in terms of flow technology in the region of the bottom 10 of the inhaler 1 via a sweeping section. With regard to this bend section, it is the U-web of the U, which U-web is designed as an arc, in particular a circular arc (semicircle). The dosing chamber 7 is stop-defined in both rotational end positions, one end position being assigned to the transfer point U. For this purpose, on the underside of the turntable disc there is an annular groove 11 which is shorter than 360 ° and is open at the bottom and into which a fixed pin 12 extends, against which one or the other end of the annular groove 11 alternately occurs while limiting the angle of rotation. The pin 12 is drawn with an angular offset for a clearer illustration.

The two legs extend in a common diametrical plane, designated E-E in FIG. 5. The suction air duct 9 is located centrally. The air inlet duct 8 runs in the region of the wall of the cylindrical housing 2.

The free, upward-facing end of the suction air duct 9 forms a mouthpiece 13. The latter has a free-standing length which enables sufficient insertion into the mouth of the user. Reference is made to FIG. 3. It can also be seen there that the opening Ö of the suction air duct 9 formed by a tube 14 is sufficiently axially spaced from an inlet opening 15 of the air inlet duct 8 located in this area.

The openings Ö and 15, which nevertheless lie in the same end region of the housing 2, are closed together by a closure cap 16 in the basic position.

The inlet opening 15 of the air inlet duct 8 is an exhalation barrier, not shown, is assigned, which makes incorrect use of the inhaler 1 difficult or precludes it.

The rotary actuation of the rotary slide 5 is linked to the proper use of the closure cap 16. In the embodiment, this cap 16 is a screw cap. The closure cap 16 thus overlapping the mouthpiece 13 functions as an operating handle H for the rotary slide valve 5 which can be rotated about the vertical geometric central longitudinal axis x-x.

The outer surface of the suction air duct 9, which is designed as a tube 14, serves as the physical axis for said rotation, the metering chamber 7 of the rotary slide valve 5 moved back and forth forming the transfer point U in one end of movement, without providing an overdose, which the closure cap 16 must always be reassigned to keep the next amount of substance 4 'ready, that is, the screwing procedure is required.

The design of the closure cap or screw cap is therefore such that the screw thread path corresponds to the working stroke or path of action of the rotary valve 5. Accordingly, the metering chamber 7 is in the unscrewed position of the closure cap 16 in the area of the transfer point; In the screwed-on position of the closure cap 16, on the other hand, the dosic is located, the amber 7 being in a fully ready position oriented towards the interior of the storage chamber 3. Filling of the metering chamber 7 is ensured by wiping fingers 18 arranged in the area of the bottom of the storage chamber 3.

The latter assume an insert 19 of the inhaler 1 that is assigned in a rotationally secured manner. They are aligned radially and extend up to the inner wall 6 on which they are supported on the end face. The metering slide 5, which also functions as the bottom of the storage chamber 3, runs under the said stripping finger 18, so that the powdery material lying on the upper side of the disc of the rotary slide 5 preferably accumulates on the flanks of the stripping fingers in the trough that passes through the underside of the stripping finger Dosing chamber 7 falls. In order to further increase this effect, the three wiping fingers 18 shown in FIG. 2 in their angular distribution are further developed. This further development consists in the fact that the wiping fingers 18 facing the upper side of the disk have an inclining flank 20 which rises obliquely to the screw-on direction of rotation Y. Reference is made to FIG. 7. The bevel of the screed 20 drawn there is approximately 45 °. It creates a kind of gusset. The substance accumulating before is not shown in detail. The scraper fingers 18 divide the region of the storage chamber 3 near the floor into individual chambers which, with sufficient height of the scraper fingers 18, also tolerate a very strong inclination position of the inhaler 1, in which case the trough is then filled.

The rotary driving of the rotary valve 5 over said The operating handle H takes place via a claw coupling K, which engages when the closure cap 16 is screwed on, between the closure cap 16 and the rotary slide 5. For this purpose, the rotary slide 5 is changed in the direction of the mouthpiece 13; it continues in this direction in a guide sleeve 21. The latter forms a bearing eye or bearing 22 with its cavity and merges into claws 23 of the claw coupling K at its free end. Two claws 23 are realized. In addition to these claws 23, which represent part of the claw coupling K, there are claws engaging in the gaps of these claws 23

25 on the closure cap 16. These form the other part of the claw coupling K on the handling side. The latter claws 25 are arranged on the front edge of a cylindrical bush 26. Said bushing starts from a horizontal ceiling 27 of the closure cap 16 on the inside and receives the mouthpiece 13 in its interior. In return, a hollow plug 28 enters the opening Ö of the mouthpiece 13 tightly. The hollow stopper 28 lies in the center in the sealing cap 16. The aforementioned bushing concentrically closes to the outside

26 on. Following this in the outward direction and lying concentrically to the bushing 26 is a sealing collar 29. The latter, with its outer surface, seals against the cylindrical inside 30 'of a housing neck 30.

On the outside of the housing neck 30 there is the screw thread 31 as an external thread, to which the corresponding internal thread is assigned on the inside of the closure cap. When assigning the closure cap 16, the dog clutch K primarily engages. After the claw-like claws 23 and 25 have been appropriately found in the respective gaps 24, internal and external threads have found their entrance. The screwing takes place with increasing claw-engaging recess, and indeed right from the start with the rotary valve 5 being carried along.

As can be seen from the drawings, the claws 23 of the guide sleeve 21 are arranged sunk inwards in relation to the upper housing edge 32. The corresponding measure is also taken on the closure cap side, in that the claws 25 spring back there relative to the cap edge 16 '. Moving them back is more noticeable.

A bypass duct 33 extends approximately parallel to the section of the air inlet duct 8 that is laid outwards. At the transfer point U, the bypass duct 33 is connected to the suction air stream a, which is to be referred to as the main stream, represented by a thick arrow line. The bypass flow designated by b in the bypass channel 33 passes through a radially outward apex region S through a first window 34 on the rotary slide side, entraining the metered amount of substance 4 'into the main flow.

At the end of the housing 2 facing away from the rotary valve 5 there is a second window 35. The main stream of the suction air stream a crosses out via the second window.

At the transition point Ü there is not only a highly gradual swirling of the powder / air mixture, but also an increased vacuum situation. This is achieved in that the bypass duct 33 is smaller in cross section than the air outlet duct 8, or in that the bypass flow b is guided in the region of the apex S through a gate with a smaller cross section. In the exemplary embodiment shown, this gate is realized. It can be seen particularly clearly from FIG. 5. There it can be seen that the end region of the bypass channel on the rotary slide side is narrowed to a slot 36, which has only a fraction of the flow cross section of the bypass channel 33. Said, vertically aligned slot is directed onto a concave curved flank 37, which continues into the approximately horizontal bottom surface of the trough or dosing chamber 7, in order to merge in the opposite direction again into a flank 37 of the same design, which underneath a slot-like recess 38 into the Top of the rotary valve 5 runs out. Said cut-out somewhat enlarges the discharge space and at the same time leads to a broad-beam delivery of the divided amount of substance 4 'to the suction air stream a. 3 that the metering chamber 7 extends tangentially to the arc path of the bypass air flow in the curvature area of the apex S of the bypass channel 33.

The assignment of the bypass channel 33 is made possible by disengaging the air inlet channel 8, the secondary flow b being split off at the level of the second window 35. The flow branches close again in the area of the first window 34. about the second window 35 enters the suction air flow a into a path section 39 leaving the cylindrical cross section of the housing 3, formed by a hollow longitudinal rib 40 attached to the casing wall side of the housing 2. This deflecting, channel-like path section 39 is in the windowless area of the corresponding projection separated by a partition 41 between the one, lower window 34 and the upper, second window 35. The longitudinal rib 40 can be integrally formed or assigned. Both are shown.

A drying agent chamber 42 is located below the storage chamber 3. The substance in this regard is represented by beads 43. The accessibility of this chamber results from a cap-shaped clip or screw base 44, the flat rear surface of which can be used to set up the inhaler 1.

An opening 45 covering the entire clear diameter of the housing 2 serves as an insertion path for the dispenser or inhaler 1. Likewise, this screw bottom opening 45 serves to produce an accessible storage chamber 3 for refilling the same. For this purpose, the housing 2 is turned upside down, as can be seen in FIG. 8, so that the screw bottom opening 45 points upwards. After removal of the screw base 45, the tube 14, including its foot region 46 forming the bend of the flow channel, can be pulled out. The drying agent slides into the drying agent chamber 42, which is then open at the top. Overlapping or subsequently, the unit is rotated in the same direction. Slider / guide sleeve 5/21 pulled out. Then the storage chamber 3 can be filled from above. The insert 19 remains inside. It keeps the path towards the housing neck 30 closed. For this purpose, it forms a transverse wall 47 on the housing neck side. This is supported on an annular wall 48 of the housing 2. Both the transverse wall 47 and the annular wall 48 each form a window 49, 50 as a passage area of the bypass channel 33. The channel base 51 on the apex provided with the slot 36, on the other hand, has a covering effect (cf. FIG. 9).

The transverse wall 47 is seated on a tube section 52 of the insert 19 which supports the guide sleeve 21. The stripping fingers 18 described in more detail above also come from the jacket wall of this tube section 52 as radial support aids. The filling nozzle is therefore not able to tilt the insert 19, which is supported on all sides. After filling the annular space as storage chamber 3, which is only interrupted by the bypass channel 33, the fitting parts are introduced again, as shown. Here, the disk of the rotary slide valve 5 takes on a further function, namely that of a closing cover of the storage chamber 3, which is filled or refilled for the first time.

As can be seen in FIG. 2, the insert 19, with a U-shaped channel 53 which is open radially outwards, forms part of the bypass channel 33.

A rotationally fixed connection between the insert 19 and the housing 2 is shown in FIG. 5. This is what the Joint between transverse wall 47 and ring wall 48 overlapping pins or warts 54, which in matching recesses

55 of the ring wall 48 occur or vice versa.

The function of the inhaler 1 is, briefly summarized, as follows. By unscrewing the closure cap 16, the metering chamber 7 reaches the area of the transition point Ü at the upper edge of the lower window 34. The air sucked in via the air inlet opening 15 also branches out at the height of the second window 35. The bypass also clears the metering chamber releasing the exactly divided amount of substance 4 to the suction air stream a, supported by an increased vacuum situation in the area of the transition point Ü where the split streams reunite. With swirling, the air / powder mixture reaches the suction air channel 9, from where it reaches the user's destination via the mouthpiece 13. The released amount of substance 4 'cannot be added; it is necessary to reassign the closure cap 16, via which the rotary valve 5 is moved back into the storage chamber 3.

The housing 2 to be filled sits on a supporting mandrel

56 of a filling web transport device 57. The supporting mandrel, which tips out at the top, closes the cavity of the insert 19.

All the features disclosed are essential to the invention. In the disclosure of the application, the disclosure content of the associated / attached priority documents (copy of the prior application) is hereby also included in full. lent included, also for the purpose of including features of these documents in claims of the present application.

Claims

Expectations:

1. Inhaler (1) for powdery substances, in particular medicinal substances (4), with a suction air duct (9) leading from an air inlet duct (8) to a mouthpiece (13), a storage chamber (3) for the substance, one Dosing chamber (7) arranged in a rotary slide valve (5) for dividing a certain quantity of substance (4 ') from the storage chamber (3) into the area of a transfer point (Ü) to the suction air stream (a), characterized by a mouthpiece (13 ) overlapping cap (16) as an operating handle (B) for the rotary valve (5).

2. Inhaler according to claim 1 or in particular according thereto, characterized in that the metering chamber (7) of the rotary slide valve (5) moved back and forth forms the transfer point (Ü).

3. Inhaler according to one or more of the preceding claims or in particular according thereto, characterized in that the outer surface of the suction air duct (9) forms the bearing for the rotary valve (5).

4. Inhaler according to one or more of the preceding claims or in particular according thereto, characterized in that the closure cap (16) is designed as a screw cap and the screw thread path Rotary slide action path corresponds, the metering chamber (7) in the unscrewed position of the sealing cap (16) in the area of the transfer point (Ü) and in the screwed-on position covering the interior of the storage chamber (3).

5. Inhaler according to one or more of the preceding claims or in particular according thereto, characterized in that the metering chamber (7) undermines (fixed) wiping fingers (18) which protrude into the storage chamber (3).

6. Inhaler according to one or more of the preceding claims or in particular according thereto, characterized by a claw coupling (K) which engages when the closure cap (16) is screwed on, between the closure cap (16) and the rotary valve (5).

7. Inhaler according to one or more of the preceding claims or in particular according thereto, characterized in that the rotary slide valve (5) consists of a disc carrying the dosing chamber (7) as a trough and a guide sleeve (21) arranged thereon, which on its The free end forms part of the claw coupling (K), the other part of which sits at the front edge of a socket (26) which is arranged centrally in the closure cap (16) and in the interior of which the mouthpiece (13) plunges in a plug-sealed manner.

8. Inhaler according to one or more of the preceding claims or in particular according thereto, characterized in that the guide sleeve (21) leads on a central tube (14) ending in the mouthpiece (13).

9. Inhaler according to one or more of the preceding claims or in particular according thereto, characterized in that claws (23) of the guide sleeve (21) are arranged lowered relative to the upper housing edge (32) and claws (25) Closure cap (16) is also sunk with respect to the cap edge (13 ').

10. Inhaler according to one or more of the preceding claims or in particular according thereto, characterized in that the transfer point (Ü) is arranged in the apex region (S) of the bypass valve to the air inlet channel (8).

11. Inhaler according to one or more of the preceding claims or in particular according thereto, characterized in that the bypass channel (33) is smaller in cross section than the air inlet channel (8).

12. Inhaler according to one or more of the preceding claims or in particular according thereto, characterized in that the metering chamber (7) is tangential to the arc path of the bypass air flow in the region of curvature of the apex (S) of the bypass channel (33).

13. Inhaler according to one or more of the preceding claims or in particular according thereto, characterized in that the air inlet duct (8) and suction air duct (9) run and are connected to one another corresponding to the legs of a U, the U-web being designed as a bottom is.

14. Inhaler according to one or more of the preceding claims or in particular according thereto, characterized by a desiccant chamber (42) arranged below the U-web bend.

15. Inhaler according to one or more of the preceding claims or in particular according thereto, characterized in that stops for limiting the angle of rotation are provided on the underside of the turntable disc.

16. Inhaler according to one or more of the preceding claims or in particular according thereto, characterized in that the air inlet channel (8) is arranged in the interior of an oriel-like, projecting, hollow longitudinal rib (40) of the otherwise cylindrical housing (2).

17. Inhaler according to one or more of the preceding claims or in particular according thereto, characterized in that the closure cap (16) both the opening (Ö) of the mouthpiece (13) and the opening (15) of the air inlet channel (8) closes.

18. Inhaler according to one or more of the preceding claims or in particular according thereto, characterized in that the end region of the bypass channel (33) is designed as a slot (36) which is above a curved flank (37) in the bottom surface the trough or the metering chamber (7) opens.

19. Inhaler according to one or more of the preceding claims or in particular according thereto, characterized by a sealing collar (29) which is concentric with the socket (26) of the closure cap (16) and which rests against the inside (30 ') of the on the The outside of the housing neck (30) equipped with screw thread (31).

20. Inhaler according to one or more of the preceding claims or in particular according thereto, characterized in that the wiping fingers (18) have a scraper flank (20) which rises obliquely to the direction of rotation (Y).

21. Inhaler according to one or more of the preceding claims or in particular according thereto, characterized in that the drying agent chamber (42) is closed by a screw base (44) of the housing (2).

22. Inhaler according to one or more of the preceding claims or in particular according to that characterized in that the device for the inhaler (1) can be inserted through the screw bottom opening (45).

23. Inhaler according to one or more of the preceding claims or in particular according thereto, characterized by an insert (19) comprising the guide sleeve (21) and having a rotationally fixed plug-in connection to the housing (2).

24. Inhaler according to one or more of the preceding claims or in particular according thereto, characterized in that the insert (19) forms the bypass channel (33) with a channel (53).

25. Inhaler according to one or more of the preceding claims or in particular according thereto, characterized in that the insert (19) has a transverse wall (47) on the housing neck side which leaves a window (49, 50) for bypassing. Channel (33) against a corresponding fenestrated ring wall (48) of the housing (2) occurs.

26. Inhaler according to one or more of the preceding claims or in particular according thereto, characterized in that the transverse wall (47) sits on a tube section (52) which supports the guide sleeve (21) and which is on the transverse wall (47). opposite end carries the stationary scraper fingers (18) reaching to the inner wall (6) of the housing (2).

27. Inhaler according to one or more of the preceding claims or in particular according thereto, characterized in that the rotary slide disc which comes in front of the end on the dosier chamber side forms the closing cover of the refillable storage chamber (3), with the wiping fingers (18) their ends act as a radial support for the insert (19).