Nebulizer apparatus and method

Details Nebulizer apparatus and method Nebulizer apparatus and method

2006-06-13

2009-12-22

Yu, Justine R (Department: 3771)

Surgery

Liquid medicament atomizer or sprayer

Gas stream aspirating medicament from reservoir

C128S200140, C128S200180, C128S203120, C128S204140, C239S338000

Reexamination Certificate

active

07634995

ABSTRACT:
An apparatus and method for providing a nebula or aerosol to a patient. In one aspect, a nebulizer is pressure sensitive so that nebulization is coordinated with a breathing cycle of the patient. The nebulizer includes a movable gas diverter that diverts pressurized gas across a liquid outlet. The diverter is moved in response to the patient's breathing cycle. In one aspect, a biasing member moves the diverter. According to another aspect of the nebulizer, an annular liquid orifice disperses an aerosol in a radial direction in response to a pressurized gas flow from an orifice located concentrically thereto. Multiple liquid orifices may be provided. In a further aspect of the nebulizer, a reservoir includes an upper, wide portion and a lower narrow portion to apply relatively uniform pressure at a liquid orifice.

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Photographs of nebulizer manufactured by PARI GmbH with detachable gas flow interrupter believed to have been publicly available prior to Feb. 13, 1996.

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