Rad-5/5v Signal Extraction Pulse Oximeter Operator’s Manual 1-5
1
overview
Pulse Oximetry
GENERAL DESCRIPTION
Pulse oximetry is a continuous and non-invasive method of measuring the level of arterial
oxygen saturation in blood. The measurement is taken by placing a sensor on a patient,
usually on the fingertip for adults, and the hand or foot for neonates. The sensor connects
to the pulse oximetry instrument with a patient cable. The sensor collects signal data from
the patient and sends it to the instrument. The instrument displays the calculated data in
two ways: 1) as a percent value for arterial oxygen saturation (SpO
2
), and 2) as a pulse rate
(PR). The following figure shows the general monitoring setup.
PRINCIPLE OF OPERATION
Pulse oximetry is governed by the following principles:
1. Oxyhemoglobin (oxygenated blood) and deoxyhemoglobin (non-oxygenated blood)
differ in their absorption of red and infrared light (spectrophotometry).
2. The amount of arterial blood in tissue changes with your pulse (photoplethysogra-
phy). Therefore, the amount of light absorbed by the varying quantities of arterial
blood changes as well.
The Rad-5/5v Handheld Pulse Oximeter uses a two-wavelength pulsatile system to distin-
guish between oxygenated and deoxygenated blood. Signal data is obtained by passing
red (rd) (660 nm wavelength) and infrared (ir) (905 nm wavelength) light through a capil-
lary bed (for example a fingertip, a hand, a foot) and measuring changes in light absorp-
tion during the pulsatile cycle. This information may be useful to clinicians. The radiant
power of the light is rated at 0.79mW (max.). See figure below. The Rad-5/5v utilizes a sen-
sor with red and infrared light-emitting diodes (LEDs) that pass light through the site to a
photodiode (photodetector). The photodetector receives the light, converts it into an elec-
tronic signal and sends it to the Rad-5/5v for calculation.
Once the Rad-5/5v receives the signal from the sensor, it utilizes Masimo SET signal
extraction technology for calculation of the patient’s functional oxygen saturation and pulse
rate.
1. Light Emitting Diodes (LEDs)
2. Recessed Photo Detector
INDICATIONS FOR USE
The Rad-5 family of Handheld Pulse Oximeters and accessories are indicated for the con-
tinuous (Rad-5 only) or spotcheck, noninvasive monitoring of functional oxygen saturation
of arterial hemoglobin (SpO
2
) and pulse rate (measured by an SpO
2
sensor). The Rad-5
family of Handheld Pulse Oximeters and accessories are indicated for use with adult, pedi-
atric and neonatal patients during both motion and no motion conditions, and for patients
who are well or poorly perfused in hospitals, hospital-type facilities, mobile and home envi-
ronments.
overview
1-4 Rad-5/5v Signal Extraction Pulse Oximeter Operator’s Manual
1
(116 stránky)
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Komentáře k této Příručce