INHALER FOR POWDERED MEDICATIONS

摘要

PCT No. PCT/US93/12076 Sec. 371 Date Jun. 1, 1995 Sec. 102(e) Date Jun. 1, 1995 PCT Filed Dec. 16, 1993 PCT Pub. No. WO94/14492 PCT Pub. Date Jul. 7, 1994A powder inhaler comprising: a powder housing for holding a supply of powdered material to be dispensed and a metering plate for holding a metered amount of said powdered material, the metering plate being alternately positionable below said supply of powdered material or within an inhalation conduit, by means of a bi-directional, angle-limited relative rotation about a common central axis; a counter for providing a visual count of the number of doses of said powdered material that have been dispensed or remain to be dispensed in response to the relative rotation, the counter including: a continuous counter ring and a coaxially mounted intermittent counter ring, both rings being mounted on a base in surrounding relation to a retaining post, being rotatable about the common central axis and having counting indicia thereon for displaying said visual count; and a display means through which at least one of the counting indicia is displayed to indicate a count corresponding to a number of doses of powdered material that have been dispensed or remain to be dispensed.