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Publication numberUS2672865 A
Publication typeGrant
Publication dateMar 23, 1954
Filing dateApr 27, 1951
Priority dateMay 19, 1950
Publication numberUS 2672865 A, US 2672865A, US-A-2672865, US2672865 A, US2672865A
InventorsWillis Harry G
Original AssigneeWillis Harry G
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Inhaler for medicinal substances
US 2672865 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

March 23, 1954 H, Q W|| 15 2,672,865

INHALER FOR MEDICINAL SUBSTANCES Filed April 27, 1951 F1a l 1711i Z IYl/ENTOI@ Patented Mar. 23, 1954 Hariri@ .Willis, Blackwood, -.Southuullst.lalia,

Australiar i AmiczttibnAprliZfl, 1951, Serial-Noz 223,184l

Gleim nifioritsf,,application-Australia May 19, 19.5.0k

This invention relates" to; anA inhaler for medicinal substances.,

`W'heninhaling" medicina-1r substances" either through the-nose orthe mouth it isdesirableito effect a very'nedischarge of"-`themateriaibeing inhaled.-

Where the. material vis a substancev Such as powdered penicillin certain diinculties present themselves [the r chief: off `which is y the inability withinhalers as constructedheretofore oi"4 maintainingsimplicity of constructionlwhile` achieving aneldischarge of the powder.

iii'ccording to this invention. the. inhalercomprisesa bodyprovidedat oneeendiwith ari-.extension having anou'tlet at its lend which can be engaged on a nostril or placed against or into the mouth, air inlet means being located through another part of the container and so arranged that when suction is applied to the outlet the reduction of pressure within the container will cause air to ow into same to cause small quantitles of the powder to be lifted in dust form and thus placed into a condition where they can be readily inhaled through the outlet.

The device is preferably provided with a sealing cap which may conveniently be of mushroom shape having a central plug which passes down and through the outlet so that it will be sealed when the plug is in use but the plug will serve to clear the outlet as it is removed, the outwardly extending portions lof the cap fitting over the projection through which the outlet is formed and having their lower periphery in contact with the air inlet or inlets through which the ne jets of air are drawn when the device is in use.

This unit will be found to be of simple construction and highly hygienic for the reason that the cap normally protects the portion placed into contact with the nostril or the mouth while at the same time loss of the content or contamination of same will be prevented by the seal which the plug effects both of the outlet and the ne jet openings.

In order, however, that the invention may be more clearly understood it will now be described with reference to the accompanying drawings in which:

Fig. '1 is a side elevation of the invention,

Fig. 2 is a central longitudinal section,

Fig. 3 is a view corresponding to Fig. 2 but showing the cap removed from the body,

Fig. 4 is a central longitudinal section of a modified form of body, and

Fig. 5 is a longitudinal section of a still further modification.

The'body- Izhas ahollow Tin, which the powder toV be; inhaled isl disposed,- thebody being closed atv itsY lower end bya plug 3 and-having an; extensionY 4" curved inwardly to terminatei'nan outlet 5 through which, the inhaling takesplace.

Fitting` over the bod-y- I is' a capA 6 the lower endi off which;A engages aA port-ion 'lonthe bod-yy; the portion 'l-Y havingj a circumferentialf ridge- 8 which co-operateswitlrraf depressionin then cap 6 to elect a spring lock of' thecap 6- to the body Ii The cap 6 has in-it a depending plug l0 which fitslinto-.theout-let 5'; at the'top of 'the-bodyv IA to seal Vthis out-let asshown'y more` particularly `in Fig. 2; f

An air inlet opening IJI", substantially smaller than the outlet 5 and having a diameter no larger than one-quarter the diameter of the outlet, is formed through the portion 'I of the body I and is arranged to direct air downwardly into the powder space of the body so that when suction is applied through the outlet 5 the air flowing in through the air inlet opening II will disturb the powder either by direct contact or by reflex currents of air set up in the container to cause the powder to be lifted with`an upward flow of air taking place within the bondy I.

In the modication shown in Fig. 4, in which similar reference numerals are used to corresponding parts, a further air inlet opening I4 is formed through the portion 1 of the body I, this air inlet opening, however, being arranged as an additional air bleed to permit a greater quantity of air to be drawn through the outlet 5 in the extension 4 of the body I.

By providing the two openings II and i4 a close control is given of the mixture of air and powder, the opening I I projecting a stream of air downwardly to disturb the powder and render at least some of it air-borne while the opening I4 admits additional air so that the ratio of air to powder being drawn through the outlet 5 gives more air for a measured quantity of powder and thus allo-ws the powder to be carried deep into the lungs or further back into the throat if such is desired. When the small opening I I only is used it will be appreciated that the amount of air flowing through the outlet 5 will be correspondingly small and the powder will settle in the nostrils or mouth more readily than is the case where a relatively large volume of air is being inhaled.

In the modication shown in Fig. 5 of which again the corresponding parts have similar reference characters, the body l kis provided with a shoulder I5 between which and the shoulder I6 of the body is disposed a rotatable sleeve I'I, the sleeve having an opening I8 which may register with the opening II in the body or may be brought into partial register only if such is desired, this then permitting the size of the opening II to be adjusted by appropriately orientating the sleeve I'I.

In use the cap 6 is simply removed from the body I and the outlet 5 placed into communication with the mouth or nostril whereupon when suction is applied the powder from the hollow 2 will be drawn up with the air depending in Volume on the size of the opening II and whether or not the additional opening I4 is used. When inhaling is completed the cap is simply replaced until such time as a further supply of the inhalant is required, the cap tting over the portion 1 of the body in the case of Figs. 1 to 4 or over the sleeve I 'I in the case of Fig. 5 to seal the air openings into the body so that when the cap is in position it closes the outlet 5 and at the same time the air inlet openings I I and I4 if used so that a hygienic and aseptic seal is formed for the container.

` The unit can be formed of plastic or any other suitable material and it will be appreciated that the openings may be duplicated if desired an may be arranged tangentially.

What I claim is:

1. An inhaler for medicinal inhalants comprising a hollow body for holding a medicinal inhalant and having an axial extension tapering to an unobstructed voutlet opening arranged axially at its end, and intermediate its ends said body having at least one straight air inlet opening extending oblquely through the wall of said body which has a diameter no greater than onequarter the diameter of said outlet opening and arranged to admit air into said hollow body in a direction away from said outlet opening when suction is applied to the latter, a cap to engage said body intermediate the ends oi' the latter and fit over said extension for sealing said inlet opening, and a stopper projecting axially within said cap to extend through and seal said outlet opening.

2. An inhaler according to claim 1; wherein said body has an additional straight air inlet opening extending obliquely through the side wall thereof intermediate its ends and arranged to admit additional air into said hollow body in the direction towards said outlet opening so that the additional air will be mixed with the medicinal mist formed by air entering through the rst mentioned inlet opening.

3. An inhaler according to claim 1; including an apertured sleeve movable on said body for selective registration with said air inlet opening to vary the effective area of the latter.

HARRY G. WILLIS.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 263,451 Adams Aug. 29, 1882 439,707 Warren Nov. 4, 1890 545,679 Cills Sept. 3, 1895 567,558 Wiseman Sept. 8, 1896

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US263451 *Mar 31, 1882Aug 29, 1882 adams
US439707 *Mar 18, 1890Nov 4, 1890Said DowSaid warren
US545679 *Apr 17, 1796Sep 3, 1895 Eemedial powdee
US567558 *Apr 30, 1895Sep 8, 1896 Inhaler
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2966909 *Dec 14, 1956Jan 3, 1961A E Halperin Co IncPocket inhalator
US3255750 *Dec 13, 1963Jun 14, 1966Gilbert SchwartzmanInhaler
US3938516 *Jan 13, 1975Feb 17, 1976Syntex Puerto Rico, Inc.Inhalation device
US3973566 *Jan 13, 1975Aug 10, 1976Syntex Puerto Rico Inc.Inhalation device
US3980074 *Oct 16, 1975Sep 14, 1976Beecham Group LimitedDevice for the administration of powders
US4014336 *Nov 20, 1975Mar 29, 1977Syntex Puerto Rico, Inc.Inhalation device
US4083368 *Sep 1, 1976Apr 11, 1978Freezer Winthrop JInhaler
US4307734 *Jun 23, 1980Dec 29, 1981B & B Inventors & Marketers, Inc.Snuff dispenser
US5161524 *Aug 2, 1991Nov 10, 1992Glaxo Inc.Dosage inhalator with air flow velocity regulating means
US5388572 *Oct 26, 1993Feb 14, 1995Tenax Corporation (A Connecticut Corp.)Dry powder medicament inhalator having an inhalation-activated piston to aerosolize dose and deliver same
US5388573 *Dec 2, 1993Feb 14, 1995Tenax CorporationDry powder inhalator medicament carrier
US5460173 *Mar 25, 1994Oct 24, 1995Tenax CorporationDry powder inhaler medicament carrier
US5483954 *Jun 10, 1994Jan 16, 1996Mecikalski; Mark B.Inhaler and medicated package
US5568807 *Jul 13, 1995Oct 29, 1996Mecikalski; Mark B.Air-flow control for an inhaler
US5575281 *Jul 13, 1995Nov 19, 1996Mecikalski; Mark B.Medicated package
US5673686 *Feb 2, 1995Oct 7, 1997Plurichemie AnstaltMedicament inhaler and method
US6116239 *Aug 3, 1998Sep 12, 2000Art SlutskyInhalation device
US6142145 *Mar 13, 1998Nov 7, 2000Astra AktiebolagInhalation device
US6575160Sep 7, 2000Jun 10, 2003Art SlutskyInhalation device
US8561609Dec 7, 2011Oct 22, 2013Respira Therapeutics, Inc.Dry powder inhaler
US8651104May 11, 2012Feb 18, 2014Respira Therapeutics, Inc.Bead-containing dry powder inhaler
WO1999013930A1 *Sep 17, 1998Mar 25, 1999Gregor John Mclennan AndersonIntranasal administration device
Classifications
U.S. Classification128/203.15
International ClassificationA61M15/00, A61M15/08
Cooperative ClassificationA61M2015/0025, A61M15/08, A61M2206/16
European ClassificationA61M15/08