Add-on spacer design concept for dry-powder inhalers

摘要

A spacer, for disposition between a user's mouth and a medicament inhaler outlet, has a hollow body defining an elongate internal chamber (10) with a diffuser portion (8) having a spacer inlet (9) adapted to engage the inhaler outlet in communication with the internal chamber, the diffuser portion extending axially outwardly from the spacer inlet; a buffer portion (6) extending axially from the diffuser portion; and a nozzle portion (7) having a spacer outlet (5) adapted to engage the user's mouth in communication with the internal chamber, the nozzle portion extending axially inwardly from the buffer portion.