Insufflation is the application of medicated powders to mucous membranes by means of a powder-blower.

For general use the simplest form of insufflator is the most satisfactory, consisting essentially of a hard rubber tube and a detachable bulb with a spatula-like nozzle. On this latter the powder to be used is placed, the tip is then slipped on over it, and pressure of the bulb throws the powder where it is desired. It is a particularly satisfactory form of treatment when it becomes desirable to place medication directly upon an otherwise not easily approached position, as for example, the tonsils and the nas< (-pharynx.

The medicament may be any light powder, but is usually limited to astringents and sedatives. IWic acid is par ticularly efficacious when applied in this way in cases of tonsi litis.