Powder inhaler having a multi-positioned metering cup

Details Powder inhaler having a multi-positioned metering cup Powder inhaler having a multi-positioned metering cup

1993-01-06

1995-08-01

Asher, Kimberly L.

Surgery

Respiratory method or device

Means for mixing treating agent with respiratory gas

12820319, 12820323, A61M 1508, A61M 1600, B05D 714, B65D 8306

Patent

active

054372704

ABSTRACT:
The inhaler includes a storage chamber for the powder to be delivered and an inhalation passage through which air is drawn via a mouth piece. A metering member having a frusto-conical side wall presents each dose to the inhalation passage in an upwardly open metering cup to be drawn therefrom by the air flow through the passage. A wiping element removed any particles of powder from the dispensing cup as it travels from the inhalation passage to the storage chamber to be refilled, and a chamber containing a moisture-absorbent material dries the empty cup and also dries the powder in the cup prior to inhalation to aid its removal from the cup. A mechanical counter is indexed each time the metering member is indexed to display the number of doses used or remaining.

REFERENCES:
patent: 2587215 (1952-02-01), Priestly
patent: 4200099 (1980-04-01), Guenzel et al.
patent: 4274403 (1981-06-01), Struve
patent: 4524769 (1985-06-01), Wetterlin
patent: 4570630 (1986-02-01), Elliott et al.
patent: 4668218 (1987-05-01), Virtanen

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