The INVOS™ Technology Difference

Leading the Field of Regional Oximetry Through Continuous Innovation and Research

INVOS™ (In Vivo Optical Spectroscopy) system technology noninvasively monitors site-specific adequacy of perfusion in the brain or body tissue directly beneath its sensors. With its clinically validated design and capabilities and patented sensor spacing configuration, INVOS™ technology demonstrates sensitivity to subtle changes in saturation and blood flow.([FOOTNOTE=Kim M, Ward D, Cartwright C, et al. Estimation of jugular venous O2 saturation from cerebral oximetry or arterialO2 saturation during isocapnic hypoxia. J Clin Monit Comput. 2000;16(3):191-99.],[ANCHOR=View Abstract],[LINK=/content/mitg/websites/languagemasters/na/en-us/support/clinical-evidence.html?id=297373]) This arms clinicians with real-time data on regional oxygen saturation (rSO2), which can detect site-specific ischemic complications even when systemic parameters or lab tests are within normal limits.([FOOTNOTE=Casati A, Fanelli G, Pietropaoli P, et al. Continuous monitoring of cerebral oxygen saturation in elderly patients undergoing major abdominal surgery minimizes brain exposure to potential hypoxia. Anesth Analg.2005;101(3):740-747.],[ANCHOR=View Abstract],[LINK=/content/mitg/websites/languagemasters/na/en-us/support/clinical-evidence.html?id=143155]),([FOOTNOTE=Janelle GM, Mnookin S, Gravenstein N, Martin TD, Urdaneta F. Unilateral cerebral oxygen desaturation during emergent repair of a DeBakey type 1 aortic dissection: potential aversion of a major catastrophe. Anesthesiology. 2002;96(5):1263-1265.],[ANCHOR=View Abstract],[LINK=/content/mitg/websites/languagemasters/na/en-us/support/clinical-evidence.html?id=297363]),([FOOTNOTE=Blas ML, Lobato EB, Martin T. Noninvasive infrared spectroscopy as a monitor of retrograde cerebral perfusion during deep hypothermia. J Cardiothorac Vasc Anesth. 1999;13(2):244-245.],[ANCHOR=View Abstract],[LINK=/content/mitg/websites/languagemasters/na/en-us/support/clinical-evidence.html?id=297323]),([FOOTNOTE=Prabhune A, Sehic A, Spence PA, Church T, Edmonds HL Jr. Cerebral oximetry provides early warning of oxygen delivery failure during cardiopulmonary bypass. J Cardiothorac Vasc Anesth. 2002;16(2):204-206.],[ANCHOR=View Abstract],[LINK=/content/mitg/websites/languagemasters/na/en-us/support/clinical-evidence.html?id=297361])


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Using a Proprietary Algorithm

INVOS™ technology provides clinicians with immediate, actionable information to optimize patient care.

  • Uniquely designed sensors—designed for adult, pediatric and infant/neonatal patients—are placed directly on the desired monitoring site.
  • Two specific wavelengths of near-infrared light (730 and 810 nm) are used to determine the oxygen-hemoglobin saturation in the tissue beneath the sensors.
  • Two detectors (shallow and deep) are spaced to permit separate data processing of shallow and deep optical signals, enabling clinicians to localize the area of measurement, called spatial resolution.
  • Unlike parameters that measure only venous or arterial blood, INVOS™ technology includes contributions from both in a 3:1 ratio, yielding a venous-weighted percent saturation. This provides real-time data about the balance or imbalance of oxygen supply and demand, thus reflecting venous oxygen reserve—the oxygen remaining after extraction by tissues and vital organs — and providing accurate measurement of site-specific tissue oxygenation.
  • INVOS™ technology uses settings for patient-specific baselines and thresholds, enabling clinicians to monitor oxygenation changes from baseline

INVOS™ Technology

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