Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS3918451 A
Publication typeGrant
Publication date11 Nov 1975
Filing date16 Sep 1974
Priority date18 Sep 1973
Also published asCA1027448A1, DE2346914A1, DE2346914B2, DE2346914C3
Publication numberUS 3918451 A, US 3918451A, US-A-3918451, US3918451 A, US3918451A
InventorsEmeram Steil
Original AssigneeRitzau Pari Werk Kg Paul
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Inhalator for pulverulent substances
US 3918451 A
Abstract
An inhalator the case of which is provided with a reception space in its outer peripheral surface for insertably carrying a capsule containing a substance to be inhaled. An outer cover is mounted on the case and is movable with respect to the case between specified positions under the action of a spring bias. In one position the cover exposes the reception space to permit insertion and removal of capsules at which position the cover is interlocked with the case. Upon insertion of a capsule the cover is automatically unlocked from the case and moves under the spring bias to a position to cover the capsule and to a further position at which cutting members coupled to the cover move into the reception space to open the capsule.
Images(2)
Previous page
Next page
Description  (OCR text may contain errors)

United States Patent [191 Steil INHALATOR FOR PULVERULENT SUBSTANCES [75] Inventor: Emeram Steil, Starnberg, Germany [73] Assignee: Paul Ritzau Pari-Werk KG, Germany [22] Filed: Sept. 16, 1974 [21] Appl. N0.: 506,611

[30] Foreign Application Priority Data Sept. 18, 1973 Germany 2346914 [52] US. Cl. 128/260; 128/208; 222/193 [51] Int. Cl.? B67D 5/54; A61M 13/00;

A61M 15/06 [58] Field of Search 128/266, 208; 222/193 [56] References Cited UNITED STATES PATENTS 3,635,219 l/1972 Collingwood 128/208 X 3,870,046 3/1975 Elliott 128/266 Prinmr Examiner-Aldrich F. Medbery Attorney, Agent, or Firm-Hill, Gross, Simpson, Van Santen, Steadman, Chiara & Simpson [5 7] ABSTRACT An inhalator the case of which is provided with a reception space in its outer peripheral surface for insertably carrying a capsule containing a substance to be inhaled. An outer cover is mounted on the case and is movable with respect to the case between specified positions under the action of a spring bias. In one position the cover exposes the reception space to permit insertion and removal of capsules at which position the cover is interlocked with the case. Upon insertion of a capsule the cover is automatically unlocked from the case and moves under the spring bias to a position to cover the capsule and to a further position at which cutting members coupled to the cover move into the reception space to open the capsule.

18 Claims, 4 Drawing Figures US. Patent Nov. 11, 1975 Sheet1of2 3,918,451

Fig.1

INHALATOR FOR PULVERULENT SUBSTANCES The invention relates to an inhalator for pulverulent substances contained in capsules insertible into themhalator case, with an inlet and an outlet forthe respiratory air. An inhalator of this type, which is applied in medicine for example, is already known. It offers the advantage that, by the insertion of a capsule, a precisely dosed quantity of the substance which is to be inhaled is present within the apparatus, so that when it is needed, e.g. during acute asthmatic attacks, no harmful excess dosage can be inhaled. It is handy moreover, and may easily be stowed inside a pocket.

The inhalator of the kind described in the foregoing is so formed that the capsule is pushed into a rotatably installed cylindrical sleeve which may be placed in wobbling rotary motion when a flow of air is drawn through a suction via the mouthpiece installed on the apparatus, by means of' propeller blades arranged thereon. The pulverulent substance present within the previously pierced capsule is concomitantly raised from the latter by turbulence, whereupon it penetrates the patients mouth via the mouthpiece, together with the air sucked in. It is a disadvantage of this apparatus, that it must be disassembled into three parts when fitting each capsule, and that it must be serviced approximately once a week, i.e. dismantled, cleaned and oiled. The reliability is inadequate moreover, so that the makers recommend that a replacement apparatus be kept in readiness at all times. The object of the present invention is'to eliminate these disadvantages and to provide an uncomplicated and reliably operated inhalator, which is handy, requires no maintenance and is reliable. In accordance withthe invention, this problem is resolved in that the capsule reception space is situated at the periphery of the case with aside open at the periphery and is equipped with a cover movably arranged thereon, and which uncovers the capsule reception space in a filling and emptying position and covers it in another position. This cover may be rotatably arranged, and may comprise an aperture acting as a passage for traversal by the capsule. The cover may be stopped at the filling and emptying position by means ofa stop pin guided in longitudinally displaceable manner with respect to a notch of the cover. This stop pin may have connected to it an ejector for capsules present within the reception space, in such manner that it is insertable into the reception space under the force of a spring and at the same time moves the stop pin into the notch of the cover. During the pressing ofa capsule into the reception space, the ejector and the stop pin are then pushed into the inside of the case, the latter concomitantly cancelling the immobilisation. A spring member may then automatically move the cover into the idle position. The cover may be equipped with a device for opening capsules, for example in the form of two small blades, which under a force acting against the spring as described in the foregoing, may be pushed into the reception space of the capsule. The covermay be formed in a variety of ways, e.g. as a cylindrical sleeve partially surrounding the apparatus, as a slider, or as a removable lid. The cover is preferably produced in transparent form, so that the blades and capsule remain permanently visible, in order to show whether a new unopened capsule has been inserted.

According to the invention therefore there is provided an inhalator for pulverulent substances comprising an inhalator case having an inlet and an outlet for passing respiratory air, a reception space formed on the outer periphery of the case for insertably receiving a capsule containing a pulverulent substance, means for mounting a cover portion on the inhalator case for movement with respect thereto between a first position whereat the cover portion encloses the capsule in the reception space and a second position at which the cover portion uncovers the capsule in the reception space to permit removal and replacement thereof.

The advantages of the present invention consist in that as a consequence of the incorporation of the capsule reception space at the periphery of the case, in combination with a removable cover, a new capsule may be inserted without dismantling the case. The spring arrangement of the cover has the result that the cover moves automatically to the idle position and thus eliminates confusion between the opening and the idle or operating positions, which exists in the known systems. The ejector arranged under spring loading considerably simplifies the handling of the apparatus. The omission of a turbo impeller wheel simplifies the operation and improves the reliability of the apparatus.

The invention will be better understood from the following description taken with reference to the drawings wherein:

-FIG. 1 shows an overall view of the apparatus in the operating or idle position,

FIG. 2 shows a cross-section of the apparatus in the filling and emptying position, along the line IIII in FIG. 1,

FIG. 3 shows a cross-section of the apparatus in the operating or idle position, along the line IIIIII in FIG.

FIG. 4 shows a cross-section of the apparatus in the pricking-open position, along the line IIIIII in FIG. I.

With reference to the drawings an inhalator comprises a cylindrical case 2 and is equipped with a mouth piece 17 at its one terminal extremity. An aperture 4 of a cover 3 may be brought into the filling and emptying position shown in FIG. 2, against the spring force of a spring member 16. A stop pin 6 which is guided within the case in a perforation 7 and rigidly coupled to an ejector 10 is then pushed into a then available notch 8 of the cover 3 as a consequence of the spring force of another spring member 9, and immobilises the cover. In this position, a capsule 11 may be pushed into a reception space 1 of the inhalator against the ejector I0 projecting into the same, in such manner that the stop pin coupled to it is released at the same time, the cover 3 concomitantly being displaced by means of the spring member 16 shown in FIG. 1 into an idle and operating position, in which the capsule 11 is covered by the cover 3 within the outwardly open peripherally situated reception space 1.

By moving the cover 3 in a direction away from the filling and emptying position, a cutting device comprising two small blades 12, fastened on the cover 3 and guided in slots 18 of the case, engages the reception space 1 and cuts or pricks two small holes 13 into the capsule l1 situated therein, close to the two extremities of the capsule. The blades 12 movable in slots 18 incorporated along the periphery simultaneously act as axial bearers for the cylindrical sleeve of the case, which is constructed as a cover. The pricking-open position of the inhalator is shown in FIG. 4.

As a consequence of the spring force of the spring member 16, acting at two sides, the cover 3 is moved automatically into the idle and operating position after it has been released. During inhalation, the pulverulent substance present within the capsule 11 is sucked into the mouth as a consequence of the holes 13, via the mouthpiece 17, an inlet opening 14 connected to the reception space 1 and an outlet opening which is open towards the mouthpiece 17, as illustrated in FIG. 1. To eject the empty capsule 11, the cover 3 is brought into the filling and emptying position against the spring force of the spring member 16, the stop pin 6 and the ejector 10 then being moved towards as a consequence of the spring force of the spring member 9, and the ejector ejects the capsule automatically.

The bottom of the inhalator, which is not shown in the drawings, is equipped with air entry slots for the inlet opening 14 and is inset into the cylindrically formed cover 3, may be constructed in pot-like form close to the axis and may be equipped with a groove in order to act as a receptor and partially as an entraining element for the spring member 16. The cover 3 is transparent thus making it possible to ascertain directly whether a fresh unopened capsule has been inserted. Moreover, it becomes immediately apparent whether the cover 3 is being displaced in the right direction.

In another example of an embodiment which is not illustrated, the cover may be constructed as a closed slide matching the shape of the case. This slider may be displaced either in the direction along the periphery or in axially parallel direction.

In another example of an embodiment which is not illustrated, the cover may also be made in the form of a lid which is removable or secured by hinges.

I claim:

1. An inhalator for pulverulent substances comprising an inhalator case having an inlet and an outlet for passing respiratory air, a reception space formed on the outer periphery of the case for insertably receiving a rupturable capsule containing a pulverulent substance, means for mounting a cover portion on the inhalator case for movement with respect thereto between a first position whereat the cover portion encloses the capsule in the reception space and a second position at which the cover portion uncovers the capsule in the reception space to permit removal and replacement thereof.

2. An inhalator as claimed in claim 1, wherein said means for mounting the cover portion is rotatable. and is arranged on the outer surface of said inhalator case, said cover portion having an aperture for traversal by the capsule from and to said reception space.

3. An inhalator as claimed in claim 1, wherein a stop pin is guided in a longitudinal displaceable manner within said case and a notched portion is provided in said cover portion so that in said second position of the cover portion the stop pin engages the notched portion and immobilises the cover portion in said second position.

4. An inhalator as claimed in claim 3, wherein an ejector member rigidly coupled to said stop pin is displaceably arranged within the inhalator case, and first spring means is coupled to the ejector means to constantly urge the ejector member to eject a capsule from the reception space, and concomitantly move said stop pin into the notched portion of the cover portion whereby during insertion of a capsule into the reception space, the ejector member is moved out of the reception space against the force of said spring means, the stop pin concomitantly cancelling said immobilisation of said cover portion.

5. An inhalator as claimed in claim 1, further comprising opening means to open a capsule in the reception space, said opening means being mounted to said cover portion to be moved together therewith into said reception space.

6. An inhalator as claimed in' claim 5, wherein said opening means comprises two blades which cut the capsule open vicinal to its extremities.

7. An inhalator as claimed in claim 6, wherein said means for mounting said cover portion on the inhalator case for movement with respect thereto includes a spring member under the biasing force of which said cover portion is moved from said first position, into said second position and also into a third position at which said opening means enters said reception space.

8. An inhalator as claimed in claim 1, wherein said reception space communicates with the inside of the inhalator case via an air inlet and an air outlet opening.

9. An inhalator as claimed in claim 8, wherein the blades of said opening means are moved into the reception space through said air inlet and air outlet openings.

10. An inhalator as claimed in claim 9, wherein the blades of said opening means are movable in slots of the walls of said inhalator case.

1 1. An inhalator as claimed in claim 10, wherein said cover portion is held in an axial direction on the inhalator case by the blades engaging said slots.

12. An inhalator as claimed in claim 1, wherein said inhalator case is cylindrical and said cover portion is mounted for slidable movement therearound.

13. An inhalator as claimed in claim 12, wherein said cover portion is a cylindrical sleeve partially surrounding the inhalator case. i

14. An inhalator as claimed in claim 13, wherein said cylindrical sleeve has a base which surmounts the inhalator case at one end thereof.

15..An inhalator as claimed in claim 14, wherein said spring member is a spring coil, a stud member being provided on the base of said sleeve to seat the coil spring which engages co-axially in the case.

16 An inhalator as claimed in claim 15, wherein said coil spring is seated on the base of the sleeve in a pot engaging in the case and with its extremities protruding radially in limb-like manner is engaged through an opening in the side wall of the pot and into a recess in the wall of the inhalator case.

17. An inhalator as claimed in claim 1, wherein said cover portion is removable.

18. An inhalator as claimed in claim 1, wherein said cover portion is transparent.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US3635219 *4 Jun 196918 Jan 1972Fisons Pharmaceuticals LtdInhalation device
US3870046 *22 Apr 197411 Mar 1975Miles LabInsufflator
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4013075 *15 Jul 197522 Mar 1977I.S.F. S.P.A.Inhalers and insufflators having a cutting means
US4117844 *10 Feb 19773 Oct 1978Allen & Hanburys LimitedDevice for dispensing medicaments
US4860740 *10 Feb 198729 Aug 1989Riker Laboratories, Inc.Powder inhalation device
US4889114 *2 Jul 198726 Dec 1989Boehringer Ingelheim KgPowdered pharmaceutical inhaler
US5048514 *3 Jul 199017 Sep 1991Somova S.P.A.Inhaler for medicaments contained in capsules
US5152284 *24 May 19916 Oct 1992Phidea S.P.A.Disposable inhaler with pre-pierced capsule
US5320095 *10 Dec 199114 Jun 1994Pharmachemie B.V.Device for use with the inhalation of powdered materials contained in rod-shaped capsules
US5476093 *14 Jul 199319 Dec 1995Huhtamaki OyDevice for more effective pulverization of a powdered inhalation medicament
US5483954 *10 Jun 199416 Jan 1996Mecikalski; Mark B.Inhaler and medicated package
US5505194 *4 Oct 19949 Apr 1996Abbott LaboratoriesAerosol inhalation device having slideably and rotatably connected elliptical cylinder portions
US5568807 *13 Jul 199529 Oct 1996Mecikalski; Mark B.Air-flow control for an inhaler
US5575281 *13 Jul 199519 Nov 1996Mecikalski; Mark B.Medicated package
US5584285 *7 Jun 199517 Dec 1996Salter LabsBreathing circuit apparatus for a nebulizer
US5619985 *3 Aug 199515 Apr 1997Dott Limited CompanyInhaler type medicine administering device
US5647349 *31 May 199615 Jul 1997Dott Limited CompanyMedicine administering inhaling device
US5690101 *30 Jul 199625 Nov 1997Kutta; Helmuth W.Portable air purifier with chemical reaction zone
US5752505 *18 Mar 199719 May 1998Dott Limited CompanyInhalation-type medicine delivery device
US6089228 *8 Jan 199818 Jul 2000Inhale Therapeutic SystemsApparatus and methods for dispersing dry powder medicaments
US625723314 May 199910 Jul 2001Inhale Therapeutic SystemsDry powder dispersing apparatus and methods for their use
US647088416 Apr 200129 Oct 2002Aventis Pharma LimitedCapsule opening arrangement for use in a powder inhaler
US654344830 May 20008 Apr 2003Inhale Therapeutic Systems, Inc.Apparatus and methods for dispersing dry powder medicaments
US65469294 Jun 200115 Apr 2003Inhale Therapeutic Systems, Inc.Dry powder dispersing apparatus and methods for their use
US65751607 Sep 200010 Jun 2003Art SlutskyInhalation device
US6679255 *28 Feb 200220 Jan 2004Ivo E. PeraInhaling device for dispensing powdered medicaments contained in a capsule through the respiratory tract
US66792566 Dec 200020 Jan 2004Nektar TherapeuticsSystems and methods for extracting powders from receptacles
US66817671 May 200027 Jan 2004Nektar TherapeuticsMethod and device for delivering aerosolized medicaments
US6705313 *9 May 200216 Mar 2004Ph&T S.P.A.Device usable in the treatment of affections of the airways
US690192919 Dec 20027 Jun 2005Nektar TherapeuticsDry powder dispersing apparatus and methods for their use
US7284553 *4 Dec 200323 Oct 2007Boehringer Ingelheim Pharma Gmbh & Co. KgPowder inhaler comprising a chamber for a capsule for taking up a non-returnable capsule being filled with an active ingredient
US74220139 Mar 20059 Sep 2008Nektar TherapeuticsDry powder dispersing apparatus and methods for their use
US7559325 *9 Apr 200414 Jul 2009Novartis Pharma AgAerosolization apparatus with air inlet shield
US800669510 Nov 200530 Aug 2011Cipla LimitedInhaler
US8069851 *22 Jun 20096 Dec 2011Novartis AgAeorosolization apparatus with air inlet shield
US812308222 Jan 200828 Feb 2012McNeil-ABHand-held dispensing device
US816196921 Mar 200824 Apr 2012Novartis AgDry powder dispersing apparatus and methods for their use
US8539947 *17 Jul 200824 Sep 2013Boehringer Ingelheim International GmbhPowder inhaler
US20100275917 *17 Jul 20084 Nov 2010Boehringer Ingelheim International GmbhPowder inhaler
DE3927170A1 *17 Aug 198921 Feb 1991Boehringer Ingelheim KgInhalator
EP1082155A2 *19 May 199914 Mar 2001Inhale Therapeutic SystemsDry powder dispersing apparatus and methods for their use
WO1991002558A1 *14 Aug 19907 Mar 1991Boehringer Ingelheim IntInhalator
WO1999062495A2 *19 May 19999 Dec 1999Inhale Therapeutic SystDry powder dispersing apparatus and methods for their use
WO2004056413A1 *22 Dec 20038 Jul 2004Acrux Dds Pty LtdDispensing device
WO2006051300A1 *10 Nov 200518 May 2006Cipla LtdInhaler
WO2006066363A1 *23 Dec 200529 Jun 2006Acrux Dds Pty LtdDispensing device
Classifications
U.S. Classification128/203.21
International ClassificationA61M13/00, A61M15/00
Cooperative ClassificationA61M2015/0033, A61M15/0028, A61M2015/004, A61M2202/064
European ClassificationA61M15/00C
Legal Events
DateCodeEventDescription
24 Oct 1984AS02Assignment of assignor's interest
Owner name: PAUL RITZAU PARI-WERK KG A GERMAN CORP
Effective date: 19841008
Owner name: STARNBERG A CORP. OF GERMANY
24 Oct 1984ASAssignment
Owner name: STARNBERG A CORP. OF GERMANY
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:PAUL RITZAU PARI-WERK KG A GERMAN CORP;REEL/FRAME:004326/0823
Effective date: 19841008