Variable flow incentive spirometer

A - Human Necessities – 61 – H

Patent

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73/38, 128/8

A61H 3/00 (2006.01) A61B 5/087 (2006.01)

Patent

CA 1098404

ABSTRACT OF THE DISCLOSURE An incentive spirometer for breathing comtrol exercising of post-operative patients having flow varying capability. A patient breathing tube connects through a chamber in abase and through suction tubes to the upper end of a guage tube in which a calibrated ball having a diameter substantially the same as the guage tube is movable. Vent means in the guage tube below the ball allow atmospheric air to act on the lower surface of the ball so that inhalation by the patient will cause the ball to rise in the guage tube.

290186

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