Surgery – Truss – Pad
Patent
1994-06-08
1996-12-10
Sykes, Angela D.
Surgery
Truss
Pad
128664, A61B 500
Patent
active
055821693
ABSTRACT:
Optical pulses emitted from an optical pulse source is incident on a living tissue and is input to an optical sampling unit. An optical sampling unit detects intensities, f, of optical pulses detected at the respective timings of trigger signals input from a delay unit. A first accumulator calculates products, t.multidot.f, of the intensities f and the delay times t from the delay unit. A second accumulator accumulates the light intensities f. An average optical pathlength calculating unit calculates an average optical pathlength using the accumulation results as the products t.multidot.f and the intensities f. An SO.sub.2 value calculating unit calculates a ratio of V.sub.HbO2 to V.sub.Hb from the average optical pathlength to calculate an SO.sub.2 value.
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Nishimura Goro
Oda Motoki
Ohta Kazuyoshi
Tamura Mamoru
Yamashita Yutaka
Hamamatsu Photonics K.K.
Sykes Angela D.
Winakur Eric F.
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