Nozzle for a nasal inhaler

Abstract

A nozzle, for use in a fluid dispensing device, having a body defining a fluid flow channel which is shaped to impart acceleration and angular momentum to fluid passing therethrough, an inlet port formed in the body and defining an inlet to the channel, and an outlet port formed in the body and defining an outlet from the channel, wherein the fluid flow channel includes a swirl chamber having a plurality of swirl chamber segments, the swirl chamber being located between the channel inlet and the channel outlet, wherein the body is comprised of a mating assembly of a plurality of like component parts, each of the component parts providing one of the swirl chamber segments; wherein the fluid flow channel includes a plurality of inlets to the swirl chamber for feeding fluid into the swirl chamber and wherein each of the component parts provides one of the swirl chamber inlets; wherein the swirl chamber inlets are positioned to feed fluid into respectively different swirl chamber segments and wherein the swirl chamber segments are fed from one of the swirl chamber inlets provided by another of the component parts; and wherein each swirl chamber inlet is connected to the channel inlet by separate branches of the fluid flow channel.