Apparatus for producing a spray of droplets of a liquid

Details Apparatus for producing a spray of droplets of a liquid Apparatus for producing a spray of droplets of a liquid

1987-02-24

1989-05-16

Coven, Edward M.

Surgery

Liquid medicament atomizer or sprayer

239706, A61M 1100

Patent

active

048299960

ABSTRACT:
Apparatus, for example an inhaler, is disclosed in which a spray is formed electrostatically from an outlet 6 to achieve uniform droplet size. The spray is then discharged for its intended use--in the example inhaling. The spray is discharged completely by corona produced by a sharp discharge electrode 16 which is charged to a polarity opposite that of the liquid. In order to prevent the corona from spoiling the formation of the spray itself, the liquid of the outlet 6 is protected by a neutral shield electrode 8. The spray issues through a hole 14 in the shield electrode. The hole is sufficiently small to prevent corona getting through, yet sufficiently large to allow the spray through.

REFERENCES:
patent: 398327 (1889-02-01), DeVars
patent: 1958406 (1934-05-01), Darrah
patent: 2803248 (1957-08-01), Deuser
patent: 3232292 (1966-01-01), Schaeffer
patent: 3698635 (1972-10-01), Sickles
patent: 3941312 (1976-03-01), Ohno et al.
patent: 4275846 (1981-06-01), Coffee

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