Surgery – Truss – Pad
Patent
1978-04-03
1981-05-26
Cohen, Lee S.
Surgery
Truss
Pad
12820523, 12820524, A61B 508
Patent
active
042691966
ABSTRACT:
The tidal volume indicator consists of a spirometer in conjunction with a ventilator system adapted for use for small children and neonates. The ventilator system incorporates valving to segregate the component parts into a machine system and a patient system and includes a unidirectional check valve between the exhalation valve manifold and the patient system. The tidal volume indicator includes a spirometer with read-out amplifier operatively connected therewith which enables the volume to be read accurately from between, for example, 0 and 150 ml. It consists of a rack and pinion assembly connected to the vertically moving shaft of the spirometer and a volume indicator needle in conjunction with the necessary scale. Also included is an adjustable warning operating device which will actuate an alarm or indicator if the preset volume deviates by a predetermined amount.
REFERENCES:
patent: 3395699 (1968-08-01), Beasley
patent: 3527205 (1970-09-01), Jones
patent: 3559639 (1971-02-01), Nagus et al.
patent: 3820539 (1974-06-01), Ollivier
patent: 3961624 (1976-06-01), Weigl
patent: 3967619 (1976-07-01), Story et al.
patent: 4121581 (1978-10-01), Schmeder
Legal Jules O.
Toms Norman D.
Ade Stanley G.
Cohen Lee S.
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