Compressed-air powder inhaler

Details Compressed-air powder inhaler Compressed-air powder inhaler

1998-03-16

2000-02-29

Weiss, John G.

Surgery

Respiratory method or device

Means for mixing treating agent with respiratory gas

12820312, 12820022, 12820426, A61M 1500, A61M 1100, A61M 1600

Patent

active

060296623

ABSTRACT:
A powder inhaler contains powder and includes a mechanism for providing pressurized gas to discharge the powder through a mouthpiece. The gas must pass through an orifice before reaching the powder. The orifice is normally closed by an obturator which is released in response to the sensing of suction in the mouthpiece. The pressurized gas can bias the obturator to an orifice opening position prior to the detection of suction in the mouthpiece, so that when the obturator is released, the orifice is immediately and rapidly opened, and powder is rapidly emitted through the mouthpiece.

REFERENCES:
patent: 5287850 (1994-02-01), Haber et al.
patent: 5347999 (1994-09-01), Poss et al.
patent: 5388572 (1995-02-01), Mulhauser et al.

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