Product Overview
2-2 Operator's Manual
2.4.1 INVOS™ Adult Regional Saturation Sensor, Pediatric Regional Saturation
Sensor, and OxyAlert NIRSensor
The INVOS™ adult regional saturation sensor, pediatric regional saturation sensor, and OxyAlert
NIRSensor are disposable transducers capable of producing and detecting optical data from the
patient, converting that data to electrical signals, and sending them to the INVOS™ system. They
are applied to the forehead or somatic region via self-contained, medical-grade patient adhesive.
Electrical signals from the detectors are sent through the shielded cable to the INVOS™ system for
processing.
The sensors are designed for single-use only and may not be reused. Reuse of the sensors may
cause inaccurate readings, erratic readings, or no readings at all. Reuse will also cause an increased
risk of cross-contamination (see section 3.15 Adult and Pediatric Regional Saturation Sensor Applica-
tion, section 3.16 Infant/Neonatal OxyAlert NIRSensor Sensor Application, and instructions for use
inside carton).
Figure2-1.Disposable Sensors
2.5
Principles of Operation
The INVOS™ system “reflects the color of life.®” The harmless, near-infrared wavelengths generat-
ed by the system’s light-emitting diodes (LEDs) easily pass through scalp and bone tissue beneath
the sensor. Once in vivo they are either absorbed or scattered back up to the sensor’s shallow and
deep detectors.
1 Light emitting diode (LED) 2 Detectors
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