Surgery – Liquid medicament atomizer or sprayer
Patent
1993-09-13
1996-04-30
Lewis, Aaron J.
Surgery
Liquid medicament atomizer or sprayer
12820018, 12820022, A61M 1100
Patent
active
055115381
ABSTRACT:
An atomizing inhaler (2) includes a body (4) having a hollow interior (10) with an elastomeric barrier (22) at the tip (6) of the body. The elastomeric barrier has a slit (104) formed through the barrier. A pressurized liquid inhalant is atomized as it is forced out through the slit into the ambient environment in mist or smaller sized drops. The body includes a spring-biased piston (40) which moves within a cylinder (32). The cylinder and piston together define a variable volume container (33). The volume of the variable volume container varies according to the position of the piston within the cylinder. The liquid in the variable volume container is pressurized by the piston and flows through the slit in the barrier. The invention is broadly directed to an atomizer which uses an elastomeric barrier having a slit formed therein so that applying pressurized liquid to one side of the barrier causes the pressurized liquid to atomize as passes through the slit to mist or smaller sized drops.
REFERENCES:
patent: 238388 (1881-03-01), Heine
patent: 460458 (1891-09-01), Bates
patent: 905087 (1908-11-01), Mallory
patent: 923822 (1909-06-01), Dorment
patent: 1838873 (1931-12-01), Scott
patent: 2079587 (1937-05-01), Aronson
patent: 3144867 (1964-08-01), Trupp et al.
patent: 3155573 (1964-11-01), Fowler
patent: 4405308 (1983-09-01), Jessup
patent: 4923448 (1990-05-01), Ennis, III
McGraw-Hill Encyclopedia of Science & Technology, Atomization, pp. 858-862.
Foster Clark B.
Haber Terry M.
Smedley William H.
Habley Medical Technology Corporation
Lewis Aaron J.
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