Rad-97
Chapter 1: Technology Overview
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2.
The amount of arterial blood in tissue changes with pulse
(photoplethysmography). Therefore, the amount of light absorbed by the varying
quantities of arterial blood changes as well.
The Rad-97 uses a multi-wavelength sensor to distinguish between oxygenated blood,
deoxygenated blood, blood with carbon monoxide, oxidized blood and blood plasma.
The Rad-97 utilizes a sensor with various light-emitting diodes (LEDs) that pass light through
the site to a diode (detector). Signal data is obtained by passing various visible and infrared
lights (LEDs, 500 to 1400nm) through a capillary bed (for example, a fingertip, a hand, a foot)
and measuring changes in light absorption during the blood pulsatile cycle. This information
may be useful to clinicians. The maximum radiant power of the strongest light is rated at ≤ 25
mW. The detector receives the light, converts it into an electronic signal and sends it to the
Rad-97 for calculation.
1.
Light Emitting Diodes (LEDs)
(7 + wavelengths)
2.
Detector
