Patent ID: 7182277
Filing Date: 2007-02-27
Classification: A61M,B05B

Abstract:
1. A spray device, comprising: a tubular barrel having an internal surface, opposed first and second open ends and a bypass between said first and second open ends, a spray nozzle member on said second open end of said tubular barrel including an internal surface and a spray port, first, second and third stoppers located within said tubular barrel each having an external surface engaging said internal surface of said tubular barrel and moveable in said tubular barrel, said first stopper initially located adjacent said first open end of said tubular barrel, said second stopper spaced from said first stopper and initially located between said first stopper and said bypass of said tubular barrel and said third stopper having a body portion located between said bypass and said second open end of said tubular barrel, a fluid located between said first and second stoppers and a substance located between said second and third stoppers, wherein said third stopper includes a longitudinal projection and said spray nozzle includes a recess coaxially aligned with said spray port configured to receive said longitudinal projection, whereby movement of said first stopper toward said second open end of said tubular barrel moves said second stopper to adjacent said bypass causing said fluid to flow between said first and second stoppers through said bypass, mixing said fluid between said first and second stoppers with said substance between said second and third stoppers, continued movement of said first stopper then drives said first stopper against said second stopper and continued movement of said first and second stoppers drives said third stopper toward said spray nozzle member said longitudinal projection is deformable against an internal surface of said recess, whereby movement of said third stopper receives said longitudinal projection in said recess in said spray nozzle member and continued movement of said third stopper axially compresses said longitudinal projection providing fluid communication between said tubular barrel and said spray port through an internal passage creating a spray of said mixture for delivery of said mixture to a patient.