Attenuator for use with respirators

Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure

Patent

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Details

12820024, 12820123, 12820418, 12820612, 12820621, 12820628, A62B 700

Patent

active

057202800

ABSTRACT:
A positive
egative air pressure adaptor for a respirator system. The positive
egative air pressure adaptor has a port region for fluidically coupling a filter cartridge to a respirator. The adaptor has an inlet port for connecting to a positive pressure air source and a first check valve to restrict the flow of air from the port region to the filter cartridge. A second check valve may be provided to restrict the flow of air from the respirator to the port region. When the positive pressure air source is disconnected, the respirator system operates as a negative pressure respirator.

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