Surgery – Liquid medicament atomizer or sprayer
Patent
1996-07-24
1998-03-17
Lewis, Aaron J.
Surgery
Liquid medicament atomizer or sprayer
12820017, 12820021, A61M 1100
Patent
active
057275416
ABSTRACT:
The invention relates to the atomization of liquids. There are many fields of application where a spray mist or jet of fine droplets is required and where control over droplet size is important. Of particular significance is the medical field and the nebulizing of a drug to be administered to a patient by the inhaled route, where the deposition of the drug and its efficacy is a direct function of the droplet size. The object of the invention is to improve the control over droplet size, an objective met by a method and a construction where liquid is centrifugally forced between the plates forming a rotor, secured together with a spacing to provide an annular orifice or held together in abutting relationship with an ability for pressurized fluid to pass between the plates, the rotation of the rotor causing the forcing of the liquid through the orifice or between the plates and such that the centrifugal force and the Bernoulli effect causes the liquid to issue in the form of droplets of a predetermined size.
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