Patent ID: 6354519
Filing Date: 2002-03-12
Classification: A61B,A61M,B05B

Abstract:
A spray device used for an endoscope, said spray device having a liquid transfer tube and a spray nozzle connected to a distal end of said liquid transfer tube, said spray nozzle comprising:at least one spiral guide channel positioned in front of said distal end of said liquid transfer tube; a liquid whirling chamber positioned in front of said at least one spiral guide channel to be connected to an outlet of said at least one spiral guide channel; an orifice provided at a center of a front inner surface of said liquid whirling chamber, said front inner surface comprising a concave spherical surface; and wherein an orientation of a plane tangential to a point on said front inner surface approaches an orientation of a plane normal to an axis of the spray nozzle as said point on said front inner surface approaches the axis of the spray nozzle.