Category Archives: Spirometer

Spirometer, Collins, modified by Gaensler for Timed Vital Capacity, 1951

From ‘Analysis of the ventilatory defect by timed vital capacity measurements.’ By Edward Gaensler, American Review of Tuberculosis, 1951; 64(3): page 260.

“Fig. 1. Vital capacity spirometer with timed capacity attachment and electronic timer.  The insert shows the timing device with the cover removed.  On the left is the micro-switch which initiates the timed interval when the spirometer bell begins to rise.  On the right is the midget solenoid  which moves the added second pointer only while it is activated by the timer. “

Spirometer, Mijnhardt Vicatest-2, 1979

Found in Occupational Medicine, 1979, 29(1), page 40.

“This spirometer, recently introduced to this country, is a direct measurement dry spirometer of 6 litres capacity which functions on a metal sliding cylinder/rubber rolling seal principle.

“The instrument uses an A-4 size recording paper with space provided on the paper for entering essential test and test subject information.

“The Vicatest-2 has an integral microcomputer which provides instantaneous digital display of essential respiratory parameters – FVC, FEV1, FEV1%, MVV, PEF, FEF, FMF and FMFT, thereby eliminating manual calculations. It can be supplied with an integral printer module and a print-out unit, as optional accessories, which at the tough of a button give a print-out of all parameter which can be attached to the recorded expiratory curve, thus giving a complete and permanent record of the test.”