Breathing-controlled inhalation device for dry powders

Details Breathing-controlled inhalation device for dry powders Breathing-controlled inhalation device for dry powders

2007-02-13

2007-02-13

Bennett, Henry (Department: 3743)

Surgery

Respiratory method or device

Means for mixing treating agent with respiratory gas

C128S203210

Reexamination Certificate

active

10496409

ABSTRACT:
The invention relates to a breathing-controlled inhalation device for dry powders, having an air guide unit consisting of an essentially cylindrical body, said air guide unit comprising a flow passage provided alternately with constrictions and in each instance following enlargements, said constrictions and enlargements passing continuously one into another, and the flow passage for the air flowing through the air guide unit being of three-dimensional meander-like conformation.

REFERENCES:
patent: 4265236 (1981-05-01), Pacella
patent: 5239991 (1993-08-01), Chawla et al.
patent: 5562918 (1996-10-01), Stimpson
patent: 9622802 (1996-08-01), None
patent: 9834662 (1998-08-01), None
patent: 9853869 (1998-12-01), None

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