EP4098301A1 — Breath actuated inhaler

USPTO Abstract

A metered dose inhaler and in particular, a breath actuated metered dose inhaler, providing a valve port (1095) and a diaphragm (1000) for a pneumatic force holding unit of a breath actuated metered dose inhaler, a flap valve (36) for the canister fire system of a breath actuated metered dose inhaler, as well as methods for manufacturing and assembling the same. The valve port further comprises an annular boss (1100) defining a valve orifice channel (78), two or more radially outwardly extending projections (1106, 1107) defining a path through which polymer passed to form the boss during injection moulding, wherein the radially outwardly extending projections are substantially uniformly circumferentially separated, preferably wherein the boss has a longitudinal axis (X) which passes through the valve orifice channel, and wherein two radially outwardly extending projections and the valve orifice channel lie in a common plane coincident with the longitudinal axis.