From ‘Computer applications for patient care”, by Joseph D. Bronzino, published by Addison-Wesley, 1982, page 276.
Category Archives: Plethysmograph
Plethysmograph, Jaeger BodyTest, 1977
A constant volume – variable pressure plethysmograph. From “The history of lung function testing in the UK”, by Kevin Hogben, Inspire, 2011, Volume 11, No. 3, page 20.
Plethysmograph, Dubois, 1956
Photo of Dubois’ original plethysmograph. From a powerpoint presentation from Hans-Juergen Smith, Product Manager Pneumonology, Respiratory Diagnostics Turkish Thoracic Society 2014
Plethysmograph, Dubois Water-Filled, circa 1955
Found on the South Australia Medical Heritage website. Attributed to an article in the Journal of Clinical Investigations, vol 49, Issue 6 (June 1, 1970), pg 1238. Described as:
“The picture above shows a schematic design of one of DuBois’ early plethysmograph designs from the early 1950’s. The person sat inside a large box filled with warm water, which would allow for easy monitoring of volume changes. It is reported that as the person entered or left the box, it flooded the Dean’s office below. For some strange reason, this design did not last long.
Plethysmograph, Jaeger BodyTest, 1978
A constant volume, variable pressure plethysmogprah. From the South Australia Medical Heritage website. Described as:
“A Jäger BodyTest unit (left) with control machine (right). A DuBois type full body constant volume plethysmograph from c. 1978.”
Plethysmograph, Mead-Type, circa 1970
A variable-volume, constant pressure plethysmograph. Undated photo from the South Australia Medical Heritage Society website and probably constructed around 1970. Manufacturer or builder was unnamed. The following description was included:
“The picture above is a more recent example of a variable volume plethysmograph. This type of box was designed in 1960 by Dr Jere Mead, and is similar to the box used by Haldane and Priestley.
The subject breathed air from outside of the box. The resulting change in box volume was recorded by a spirometer or calculated from a pneumotachograph. The pressure at the mouth could be measured directly, and the amount of air breathed was recorded by a pneumotachograph.”
Fiberglass Plethysmograph, Collins, 1969
Model P-2506. From the 1969 Collins Equipment Catalog.
Plethysmograph, Collins, 1966
1966 is the first year Collins sold a plethysmograph. From ‘A Catalog of Pulmonary Function Equipment and Accessories’, W. E. Collins Inc., 1966, page 49.
Plethysmograph, Collins, circa 1968
From an undated publicity photo, likely from 1968.
Plethysmograph, Small Infant, Collins, circa 1978
Had to be custom ordered and you supplied your own pressure transducers. From ‘Collins’ Catalog of Pulmonary Function Testing Instruments”, undated by likely from around 1978, page 1-35.