Semi concentric enhanced parallel path pneumatic nebulizer

A nebulizer comprising:

• a nebulizer body having a nozzle end, the nebulizer body defining a first inlet for a first fluid and a second inlet for a second fluid, the nebulizer body having a passage configured to conduct the second fluid from the second inlet through the nebulizer body to a second fluid exit port,
• an inner capillary defining a cylindrical wall having an outer surface, an inner surface and a single lumen extending the entire length of the inner capillary, the inner capillary configured to conduct the first fluid from the first inlet through the single lumen to a first fluid exit port, with the inner capillary passing through the passage of the nebulizer body;
• wherein the passage and the inner capillary come together at the nozzle end and where the first fluid exit port and the second fluid exit port are located at the nozzle end;
• wherein the nozzle end has a length less than ten times an outer diameter of the inner capillary;
• wherein the nozzle end has an inner diameter that is smaller than an inner diameter of the passage, and the second fluid in the passage is blocked from passing directly through the nozzle end by the inner capillary;
• wherein the inner capillary has at least one opening extending from the passage to the second fluid exit port in the nozzle end so that the second fluid in the passage can pass through the nozzle end to exit the nebulizer at the second fluid exit port;
• wherein the at least one opening penetrate through the outer surface of the cylindrical wall and not the inner surface of the cylindrical wall;
• wherein the inner capillary extends into the nozzle end with the first fluid exit port near to the second fluid exit port;
• wherein an interaction between the first fluid and the second fluid at the first fluid exit port and the second fluid exit port, with one of the first fluid and the second fluid being a liquid and the other being a gas, atomizes the liquid.