Peak ventilatory flow indicator

Details Peak ventilatory flow indicator Peak ventilatory flow indicator

1974-11-01

1976-04-13

Swisher, S. Clement

Surgery

Truss

Perineal

116117R, A61B 508

Patent

active

039497380

ABSTRACT:
A peak ventilatory flow rate indicator includes a hollow tube open at each end and has a series of small graded openings which hold a liquid by surface tension. When a subject ventilates his lungs through the tube as rapidly as possible, the number of graded openings from which the liquid is expelled is a function of peak ventilatory flow rate and an indication of pulmonary function.

REFERENCES:
patent: 737008 (1903-08-01), Nichol
patent: 741492 (1903-10-01), Henrichsen
Bono, E. F. De, A Whistle for Testing Lung Function, The Lancet, Vol. 2 (63) No. 7318, Nov. 30, 1963, pp. 1146 & 1147.

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