DIFFUSER DRAPE

摘要

The invention relates to diffuser drapes and has a particularly useful application in such drapes as those used in surgical operations. Early experiments met with difficulties in providing a diffuser drape which would pro-duce the necessary air patterns to keep the work surface clean and would not interfere with the regular activities of the operator. The diffuser drape comprises an apertured drape member with an inflatable clean air duct integral with the drape and surrounding the aperture. The clean air duct has a diffuser in it which surrounds the aperture and is shaped to diffuse low velocity clean air radially therethrough outwardly of the periphery and inwardly across the aperture from opposite sides thereof to produce a resultant flow away from the aperture. Two clean air inlets for the duct are provided on the underside of the drape member. The duct is preferably eliptical in shape and the inlets are sleeves which flare to merge tangentially into the duct.