Collins Stead-Wells Spirometer, circa 1968.
From: Burton RM, Kozel WM, Penley RP, Ward GH, Chapman RS. Application and evaluation of portable field instruments for measuring Forced Expiratory Volume of children and adults in environmental health surveys. Environmental Health Perspectives, 1974; 8: 123-131. Page 124.
From: Bellows spirometer and transistor timer for the measurement of forced expired volume and vital capacity. By M.M Collins, M. McDermott and T.J. McDermott. Proceedings of the Physiological Society, Cardiff Meeting, April 17-18 1964. Page 39P.
Photo is courtesy of Jim Sullivan, Supervisor, Pulmonary Diagnostic Laboratories at Memorial Sloan-Kettering Cancer Center.
From the Spokane Daily Chronicle, November 11, 1969, page 3.
From http://dgrespiratory.com/other. The McKesson Vitalor was a dry wedge bellows spirometer. A pen attached to the top of the bellows marked on a small sheet of graph paper that was attached to an electric motor-driven platen (the curved silver plate). The mouthpiece was permanently attached to the front of the spirometer. A reviewer later noted that it was difficult to clean sputum out of the spirometer.
From: US Naval Air Development Center, Document NADC-MR-6516, “Post-flight chest discomfort in aviators: aero-atelectasis”, by Elihu York, page 3, 12/30/1965. The McKesson Vitalor was a dry wedge bellows spirometer. A pen attached to the top of the bellows marked on a small sheet of graph paper that was attached to an electric motor-driven platen. In this picture the subject is exhaling directly into the mouthpiece that was permanently attached to the front of the spirometer.
From: JAMA, 1961 Sep 23. Volume 177, page 865. A dry wedge bellows spirometer. A pen attached to the lid of the bellows wrote on a small sheet of graph paper that was driven horizontally by an electric motor during exhalation.
Designed to measure only vital capacity. Probably manufactured around 1960. Exhalation into the spirometer filled a rubber bladder which moved lever that turned the front dial. The accuracy of this instrument was probably very limited. From: http://db.aconit.org
Designed to measure only vital capacity. Probably manufactured around 1960. Exhalation into the spirometer filled a rubber bladder which moved lever that turned the front dial. The accuracy of this instrument was probably very limited. From: http://db.aconit.org
A counter-weighted water seal spirometer. The main pen was attached to the counter-weight and drew a volume-time curve on graph paper attached to the kymograph drum. The secondary pen was attached to a mechanical integrator and was used for MVV tests. Photo found at http://www.pemed.com/techantq/tantique.htm
