Patent ID: 6889687
Filing Date: 2005-05-10
Classification: A61M

Abstract:
1. A portable, handheld breath actuated inhalator, to aerosolize and distribute a pressurised liquid, including, arranged in a housing, a breath flow path defined between an air inlet and a mouthpiece outlet, a container containing the liquid to be distributed, mechanical pressurizing means for constantly applying a pressure on the liquid in said container, a liquid conduit in flow communication with an interior of said container, an aerosolizing membrane with through pores of microscopic size in said breath flow path and in flow communication with said liquid conduit, said aerosolizing membrane aerosolizing the pressurized liquid and introducing the aerosolized liquid into the breath flow path, a mechanical valve means between said container and said aerosolizing membrane for controlling fluid communication between said container and said aerosolizing membrane, thereby controlling the introduction of the aerosolized liquid into the breath flow path, and a mechanical actuating means in said breath flow path, said mechanical actuating means for opening said mechanical valve means when a first level of an inhalation flow parameter in said breath flow path is reached and for closing said mechanical valve means when a second level of the inhalation flow parameter is reached.