Inhaler and Stem Block for Inhaler

Abstract

An improved stem block for an inhaler that is fired in an upright orientation, providing easier and more reliable delivery of aerosols. The disclosed stem block demonstrates atomization efficiency that is superior to the performance of a conventional metered dose inhaler. The stem block has a passage that connects to a narrower expansion chamber. The expansion chamber connects to an exit orifice that is narrower than the expansion chamber. The exit orifice further connects to a conical outlet for dispensing an aerosol. The passage, the expansion chamber, and the exit orifice are axially aligned.

CPC Classifications