Piston-based ventilator design and operation

Details Piston-based ventilator design and operation Piston-based ventilator design and operation

A - Human Necessities

61

M

A61M 16/00 (2006.01)

Patent

CA 2104224

Improvements in piston-based ventilator design and operation are described. In one aspect, individual compensation of force dissipation within the gas delivery system is effected, so that the desired gas pressure is delivered to the patient airway with- out the necessity for monitoring the actual pressure and using it as feedback. In another aspect, a piston (14) is dimensioned slightly less than the chamber wall (12) of the pump to define a gap (18) through which an acceptable amount of gas may leak but which eliminates the need for a physical seal, thereby minimizing the frictional resistance within the pump.

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