Breath actuated nebulizer with valve assembly having a...

Details Breath actuated nebulizer with valve assembly having a... Breath actuated nebulizer with valve assembly having a...

A - Human Necessities

61

M

A61M 11/06 (2006.01) A61M 16/06 (2006.01) B05B 7/00 (2006.01) A61M 15/00 (2006.01)

Patent

CA 2303275

A breath actuated nebulizer for efficiently and reliably delivering aerosolized liquid to an inhaling patient is disclosed. The nebulizer includes a valve assembly having an actuator piston for quickly responding to an inhalation and beginning the nebulization process, and a relief piston to lower the inhalation effort required of the inhaling patient. Also provided is a method of providing breath actuated nebulization including the steps of moving an actuator piston connected to a diverter so that the diverter reaches a nebulizing position during an initial period of inhalation, and moving a relief valve to allow a greater flow of air, and thereby reduce inhalation effort, after the initial period of inhalation.

L'invention concerne un nébuliseur actionné par la respiration destiné à administrer de manière efficace et fiable un liquide en aérosol à un patient inhalant. Le nébuliseur comprend un ensemble valve doté d'un piston actionneur permettant de répondre rapidement à une inhalation et entamant un processus de nébulisation, ainsi qu'un piston de surpression destiné à abaisser l'effort d'inhalation requis du patient inhalant. L'invention concerne également un procédé de nébulisation actionné par la respiration comprenant les étapes consistant à déplacer un piston actionneur relié à un déflecteur, de manière que le déflecteur atteigne une position de nébulisation pendant une durée initiale d'inhalation, et à déplacer une valve de surpression pour permettre un flux d'air supérieur, réduisant ainsi l'effort d'inhalation, après la période initiale d'inhalation.

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