Gas collector unit for measuring the metabolic variables of self

Details Gas collector unit for measuring the metabolic variables of self Gas collector unit for measuring the metabolic variables of self

1987-03-13

1988-08-16

King, Lloyd L.

Surgery

Truss

Pad

12820123, 12820226, 128719, A61B 508

Patent

active

047636645

ABSTRACT:
A gas collector unit to be fitted over the head of a patient for measuring oxygen consumption, carbon dioxide output and respiratory quotient, said unit comprising a clear, substantially half-ellipsoidal plastic canopy (1), a cylinder of plastic sheeting (8), which is airtightly seamed to its edges and whose mouth (10) can be airtightly sealed around the neck of a patient, as well as hose couplings (2) and (3) and flow diffusers (6) and (7) associated therewith. The free volume of a canopy with a patient's head therein is less than a third of the amount air flowing through the canopy per minute and that the free cross-sectional area of a canopy perpendicular to flow is dimensioned in a manner that the average speed of air flow over the face is higher than 4 cm/s and the CO.sub.2 -content of inhalation air is less than 0.2%.

REFERENCES:
patent: 2262522 (1941-11-01), Yant et al.
patent: 2484217 (1949-10-01), Gardenier
patent: 2916033 (1959-12-01), Coleman
patent: 3395701 (1968-08-01), Bartlett, Jr. et al.
patent: 4407280 (1983-10-01), Trammell et al.

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