Masimo (NASDAQ: MASI) announced today FDA 510(k) clearance for O3™ regional oximetry. Regional oximetry, also referred to as tissue or cerebral oximetry, may help clinicians monitor cerebral oxygenation in situations in which pulse oximetry alone may not be fully indicative of the oxygen in the brain due to various factors, such as the type of clinical procedure being performed.

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Masimo Root with O3 Regional Oximetry and SedLine Brain Function Monitoring (Photo: Business Wire)

Masimo Root with O3 Regional Oximetry and SedLine Brain Function Monitoring (Photo: Business Wire)

O3 regional oximetry uses near-infrared spectroscopy (NIRS) to continuously monitor absolute and trended regional tissue oxygen saturation (rSO2) in the cerebral region. In a study on 27 subjects published in Anesthesia and Analgesia in 2014, Dr. Daniel Redford of the University of Arizona compared cerebral oxygen saturation measurements obtained from O3 with saturations obtained from blood samples (SavO2) through induced hypoxia.1 O3 regional oximetry provided absolute root-mean-squared error of 4% and relative root-mean-squared error of 2.1%.1 This study did not require that end tidal carbon dioxide (EtCO2) levels be fixed in the study protocol, allowing the rSO2 measurement to be responsive to changes in tissue oxygen saturation due to changes in CO2 in the blood. Follow up studies with O3 extended the subject pool to 74 subjects and demonstrated that O3 maintained its absolute and relative accuracy.2

“O3 regional oximetry delivers again on Masimo's technical prowess and gives clinicians access to valuable, accurate data about cerebral oxygen saturation,” stated Joe Kiani, Founder and CEO of Masimo. “With the addition of O3 regional oximetry to the Root platform, clinicians can simultaneously access rSO2 and other measurements including SedLine brain function monitoring, Masimo SET SpO2, PVI, and SpHb monitoring – all in one monitoring platform.”

O3 regional oximetry is currently intended for use with adults weighing 40 kg (88 lbs) or greater.

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References

    1.       Redford D, Paidy S, Kashif F. Absolute and Trend Accuracy of a New Regional Oximeter in Healthy Volunteers During Controlled Hypoxia. Anesth Analg. 2014 Dec;119(6):1315-1319.
2. Masimo FDA submission data on file.
 

About Masimo
Masimo (NASDAQ: MASI) is a global leader in innovative noninvasive monitoring technologies. Our mission is to improve patient outcomes and reduce the cost of care by taking noninvasive monitoring to new sites and applications. In 1995, the company debuted Masimo SET® Measure-through Motion and Low Perfusion™ pulse oximetry, which has been shown in multiple studies to significantly reduce false alarms and accurately monitor for true alarms. Masimo SET® is estimated to be used on more than 100 million patients in leading hospitals and other healthcare settings around the world. In 2005, Masimo introduced rainbow® Pulse CO-Oximetry technology, allowing noninvasive and continuous monitoring of blood constituents that previously could only be measured invasively, including total hemoglobin (SpHb®), oxygen content (SpOC™), carboxyhemoglobin (SpCO®), methemoglobin (SpMet®), and more recently, Pleth Variability Index (PVI®) and Oxygen Reserve Index (ORI™), in addition to SpO2, pulse rate, and perfusion index (PI). In 2014, Masimo introduced Root®, an intuitive patient monitoring and connectivity platform with the Masimo Open Connect (MOC-9) interface. Masimo is also taking an active leadership role in mHealth with products such as the Radius-7™ wearable patient monitor and the MightySat™ fingertip pulse oximeter. Additional information about Masimo and its products may be found at www.masimo.com. All published clinical studies on Masimo products can be found at http://www.masimo.com/cpub/clinical-evidence.htm.

Forward-Looking Statements
This press release includes forward-looking statements as defined in Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934, in connection with the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, among others, statements regarding the potential effectiveness of Masimo’s O3™ Regional Oximetry. These forward-looking statements are based on current expectations about future events affecting us and are subject to risks and uncertainties, all of which are difficult to predict and many of which are beyond our control and could cause our actual results to differ materially and adversely from those expressed in our forward-looking statements as a result of various risk factors, including, but not limited to: risks related to our assumptions regarding the repeatability of clinical results; risks related to our belief that Masimo's unique noninvasive measurement technologies, including Masimo’s O3™ Regional Oximetry, contribute to positive clinical outcomes and patient safety; risks related to our belief that Masimo noninvasive medical breakthroughs provide cost-effective solutions with comparable accuracy and unique advantages, including: immediate and continuous results that enable earlier treatment without causing invasive trauma in all patients and in every clinical situation; as well as other factors discussed in the "Risk Factors" section of our most recent reports filed with the Securities and Exchange Commission ("SEC"), which may be obtained for free at the SEC's website at www.sec.gov. Although we believe that the expectations reflected in our forward-looking statements are reasonable, we do not know whether our expectations will prove correct. All forward-looking statements included in this press release are expressly qualified in their entirety by the foregoing cautionary statements. You are cautioned not to place undue reliance on these forward-looking statements, which speak only as of today's date. We do not undertake any obligation to update, amend or clarify these statements or the "Risk Factors" contained in our most recent reports filed with the SEC, whether as a result of new information, future events or otherwise, except as may be required under the applicable securities laws.