The Fingertip Pulse Oximeter and Heart Rate Monitor is a non-invasive method allowing the monitoring of the oxygenation of a patient's hemoglobin.
A sensor is placed on a thin part of the patient's anatomy, usually a fingertip or earlobe, or in the case of a neonate, across a foot, and a light containing both red and infrared wavelengths is passed from one side to the other. Changing absorbance of each of the two wavelengths is measured, allowing determination of the absorbances due to the pulsing arteria blood alone, excluding venous blood, skin, bone, muscle, fat, and (in most cases) fingernail polish.
Based upon the ratio of changing absorbance of the red and infrared light emitted causes a difference in color between oxygen-bound (bright red) and oxygen unbound (dark red or blue, in severe cases) blood hemoglobin, a measurement of oxygenation (the per cent of hemoglobin molecules bound with oxygen molecules) can then be made.
How does it work? To use this health gadget you just insert your finger then press the power button and the Finger Pulse Oximeter and Heart Rate Monitor will display your heart beat p/m, the percentage of oxygen in your blood and also displays an indicator bar that increases and decreases by syncing with the rhythm of your heart beat. The bar graph serves the purpose of letting you know if you’ve got a weak or strong hear based on the level of the graph. You get all this without needing to go to the hospital, see a doctor or have any invasive procedure.
Best Medical Direct - http://www.bestmedicaldirect.com/
Nonin - http://www.nonin.com/
BestMedicalDirect JPD-500A- http://www.bestmedicaldirect.com/finger-pulse-oximiter-heart-rate-monitor.html
Nonin 9500 - http://www.nonin.com/products/9500.asp