Masimo MightySat Manuel De L'utilisateur page 4

Compliance Warnings and Cautions
• Warning: Changes or modifications not expressly approved by Masimo shall void the warranty for this equipment and
could void the user's authority to operate the equipment.
• Caution: Disposal of Product: Comply with local laws in the disposal of the instrument and/or its accessories, including
batteries.
• Note: When using MightySat Rx with optional Bluetooth LE, consideration should be taken to local government frequency
allocations and technical parameters to minimize the possibility of interference to/from other wireless devices.
• Note: In accordance with international telecommunication requirements, the frequency band of 2.4 GHz is only for indoor
usage to reduce potential for harmful interference to co-channel mobile satellite systems.
• Note: This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This
device may not cause harmful interference, and (2) this device must accept any interference received, including interfer-
ence that may cause undesired operation.
• Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15
of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential
installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accor-
dance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or televi-
sion reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
• Note: This equipment has been tested and found to comply with the Class B limits for medical devices according to the IEC
60601-1-2:2007, Medical Device Directive 93/42/EEC . These limits are designed to provide reasonable protection against
harmful interference in all establishments, including domestic establishments.
• Note: This Class B digital apparatus complies with Canadian ICES-003.
TECHNOLOGY OVERVIEW
The following chapter contains general descriptions about parameters, measurements, and the technology used by Masimo
products.
Signal Extraction Technology® (SET®)
Masimo Signal Extraction Technology's signal processing differs from that of conventional pulse oximeters. Conventional
pulse oximeters assume that arterial blood is the only blood moving (pulsating) in the measurement site. During patient mo-
tion, however, the venous blood also moves, causing conventional pulse oximeters to read low values, because they cannot
distinguish between the arterial and venous blood movement (sometimes referred to as noise).
Masimo SET pulse oximetry utilizes parallel engines and adaptive filtering. Adaptive filters are powerful because they are able
to adapt to the varying physiologic signals and/or noise and separate them by looking at the whole signal and breaking it
down to its fundamental components. The Masimo SET signal processing algorithm, Discrete Saturation Transform® (DST®),
in parallel with Fast Saturation Transform (FST®), reliably identifies the noise, isolates it and, using adaptive filters, cancels it. It
then reports the true arterial oxygen saturation for display on the monitor.
Masimo SET DST
This figure is for conceptual purposes only.
General Description for Oxygen Saturation (SpO
Pulse oximetry is governed by the following principles:
• Oxyhemoglobin (oxygenated blood) and deoxyhemoglobin (non-oxygenated blood) differ in their absorption of red
and infrared light (spectrophotometry).
• The amount of arterial blood in tissue changes with your pulse (photoplethysmography). Therefore, the amount of light
absorbed by the varying quantities of arterial blood changes as well.
Successful Monitoring for SpO
Stability of the SpO readings may be a good indicator of signal validity. Although stability is a relative term, experience will
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provide a good feeling for changes that are artifactual or physiological and the speed, timing, and behavior of each.
The stability of the readings over time is affected by the averaging time being used. The longer the averaging time, the more
stable the readings tend to become. This is due to a dampened response as the signal is averaged over a longer period of time
)
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, PR and PI
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