Method and apparatus for determining oxygen saturation in vivo

Details Method and apparatus for determining oxygen saturation in vivo Method and apparatus for determining oxygen saturation in vivo

1985-05-30

1987-03-24

Husar, Stephen F.

Surgery

Truss

Pad

128637, 356 41, A61B 500

Patent

active

046517413

ABSTRACT:
Accurate in vivo measurement of blood oxygen saturation by fiberoptical means is made possible throughout a wide range of hematocrit or total hemoglobin values by using a single R/IR ratio I and calculating the SO.sub.2 value therefrom through the use of a second-order polynomial of the form

REFERENCES:
patent: 3825342 (1974-07-01), Lubbers et al.
patent: 3847483 (1974-11-01), Shaw et al.
patent: 4114604 (1978-09-01), Shaw et al.
patent: 4266554 (1981-05-01), Hamaguri
"Effects of Multiple Scattering and Peripheral Circulation on Arterial Oxygen Saturation Measured with a Pulse-Type Oximeter", Medical & Biological Engineering & Computing, Y. Shimada et al, pp. 475-479, Sep. 1984.

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