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Pulse Oximeter Product Line

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BCI Pulse Oximeters-

BCI Digit Oximeter	BCI 3180 Oximeter	BCI 3301 Oximeter
BCI 3303 Oximeter	BCI 3401 Oximeter	BCI 3403 Oximeter
BCI 3304 Oximeter	BCI 3404 Oximeter	BCI Capnocheck

Nonin Pulse Oximeters-

9500 Onyx	2500 Palm Sat	8500 Hanheld
3100 Wrist	9700 Avant	9600 Avant
4000 Wireless	2120 NIBP & Pulse Oximeter	Fetal Sat

Palco Pulse Oximeters-

PALCO 300

PALCO 340

PALCO 400

PALCO 120

Criticare Pulse Oximeters-

Criticare 503 DX

Criticare 504 DX

504 DXN2

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Function and Application of Pulse Oximeters...

Pulse oximetry is one of the most commonly employed monitoring modalities in the critical care setting. Pulse oximetry is based on two physical principles: the presence of a pulsatile signal generated by arterial blood, which is relatively independent of non-pulsatile arterial blood, venous and capillary blood, and other tissues; and the fact that oxyhemoglobin (O2Hb) and reduced hemoglobin (Hb) have different absorption spectra.

Currently available oximeters use two light-emitting diodes (LEDs) that emit light at the 660 nm (red) and the 940 nm (infrared) wavelengths. These two wavelengths are used because O2Hb and Hb have different absorption spectra at these particular wavelengths. In the red region,O2Hb absorbs less light than Hb, while the reverse occurs in the infrared region. The ratio of absorbencies at these two wavelengths is calibrated empirically against direct measurements of arterial blood oxygensaturation (SaO2) in volunteers, and the resulting calibration algorithm is stored in a digital microprocessor within the pulse oximeter. During subsequent use, the calibration curve is used to generate the pulse oximeter's estimate of arterial saturation(SpO2).

In addition to the digital readout of O2 saturation, most pulse oximeters display a plethysmographic waveform which can help clinicians distinguish an artifact signal from the true signal
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