Drug – bio-affecting and body treating compositions – Effervescent or pressurized fluid containing – Organic pressurized fluid
Patent
1992-05-11
1993-10-05
Page, Thurman K.
Drug, bio-affecting and body treating compositions
Effervescent or pressurized fluid containing
Organic pressurized fluid
514255, 12820321, A61L 904
Patent
active
052502872
ABSTRACT:
A multi-dose insufflator for the nasal administration of medicaments in fine or micronized powder form comprises a reservoir unit (34), a unit (60, 64) for withdrawing and metering the medicament contained in the reservoir unit, and an insufflation unit (42, 26) comprising a manually operated pump (42) for generating an air stream within a channel (26) for conveying an individual dose of medicament into the nasal cavity of the patient. The withdrawal and metering unit comprises a conveyor device (60) provided with at least one cup (64) for withdrawing a dose of medicament from the reservoir (34) and conveying it into an insufflation position. The cup (64) has a coaxial base hole (66) through which the air stream generated by the pump passes when the cup is in the insufflation position. The hole (66) has a size substantially smaller than the mouth of the cup (64) and such as to prevent the powder medicament falling through the hole, by virtue of the "arching" effect.
REFERENCES:
patent: 2992645 (1961-07-01), Fowler
patent: 3895111 (1975-07-01), Corey
patent: 4884565 (1989-12-01), Cocozza
patent: 5033463 (1991-07-01), Cocozza
Benston W.
Miat S.p.A.
Page Thurman K.
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