Fluid control valve, particularly for ventilator apparatus

Details Fluid control valve, particularly for ventilator apparatus Fluid control valve, particularly for ventilator apparatus

A - Human Necessities

61

H

137/132

A61H 31/02 (2006.01) A61M 16/20 (2006.01)

Patent

CA 1317527

28 ABSTRACT Ventilator apparatus for treating a patient has a ventilator enclosure to which oscillating air flow is controlled via a valve connected to the enclosure and to sources of positive and negative pressure. The valve comprises a main chamber separated via a valve seat and a shutter member from subsidiary chambers which are isolated from one another. Rotation of the shutter member by a stepper motor connects each subsidiary chamber to the main chamber in turn to produce oscillating gas flow through a main port connected to the enclosure.

616337

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