Patent ID: 8545457
Filing Date: 2013-10-01
Classification: A61B,A61M,B01F,B05B,B05C

Abstract:
1. A sprayer comprising: a syringe comprising a syringe barrel and a plunger movably positioned in the syringe barrel, the syringe barrel containing a liquid; a main body comprised of at least one syringe receiving area for receiving the syringe; a user operable operation part operable by the user to move the plunger within the syringe barrel when the syringe is positioned in the syringe receiving area to discharge the liquid from the syringe; a nozzle comprising a liquid supply passage possessing an interior along which flows the liquid discharged from the syringe barrel, a gas supply passage connectable to a gas source and possessing an interior along which flows gas from the gas source, and a film separating the interior of the liquid supply passage and the interior of the gas supply passage; and the film comprising a plurality of through holes communicating the interior of the gas supply passage to the interior of the liquid supply passage so that gas in the interior of the gas supply passage flows through the through holes in the film and into the interior of the liquid supply passage; wherein the liquid supply passage is a liquid supply tube, and the film comprises a plurality of cylindrical films which are axially spaced apart from one another along an axial extent of the liquid supply tube, each of the cylindrical films comprising a plurality of through holes, each of the cylindrical films having opposite ends connected to the liquid supply tube so that the cylindrical films form a part of the liquid supply tube.