Mechanical ventilator

Details Mechanical ventilator Mechanical ventilator

1998-03-25

2000-07-04

Weiss, John G.

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

12820423, 12820424, 12820518, A61M 1600

Patent

active

060823577

ABSTRACT:
A mechanical ventilator for ventilating a patient employs an air displacement member mounted for oscillating motion in a chamber; preferably the chamber is semi-cylindrical and the air displacement member is a vane mounted for oscillating movement about an axis of rotation such that a free outer edge surface of the vane is maintained in closely spaced apart relationship with the interior wall of the chamber throughout the oscillating; the ventilator permits significant variation in the ventilation flow waveform.

REFERENCES:
patent: 3429326 (1969-02-01), Arnell et al.
patent: 3739775 (1973-06-01), Helm et al.
patent: 3957047 (1976-05-01), Freytag et al.

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