Masimo Corporation Rad-87(R) Pulse CO-Oximeter(TM) Garners Silver 2009 Medical Design Excellence Award

The Masimo Rad-87 features the breakthrough noninvasive blood constituent monitoring capabilities of Masimo Rainbow SET((R)) Pulse CO-Oximetry for continuous monitoring of hemoglobin, carbon monoxide, methemoglobin, PVI (fluid responsiveness), perfusion index, and measure through motion pulse oximetry with upgradability to acoustic respiration rate monitoring. Its built-in 802.11a/b/g radio allows wireless communication with the Masimo Patient SafetyNet(TM) remote monitoring and clinician notification system to provide patients with an enhanced level of safety on general care floors. Designed for ease-of-use, the Rad-87 allows the features clinicians need most often to be accessed with a single touch. And, as the first Masimo Rainbow SET device with a bright white LED-based display, its high contrast visual display allows measurements to be clearly seen from across the room, while an innovative new device profile feature lets clinical settings be customized and color-coded for a particular care area.

The Medical Design Excellence Awards (MDEA) competition is the only awards program that exclusively recognizes advances in the design of medical products and the achievements of medical device manufacturers responsible for the groundbreaking innovations that are changing the face of healthcare. 2009 MDEA winners were announced and honored at the June 10th ceremony during the Medical Design & Manufacturing (MD&M) East Conference and Exposition in New York. For more information about the Medical Design Excellence Awards--including details about the winning products--visit www.MDEAwards.com.

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 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 belief that the features, function and design of the Masimo Rad-87 Pulse CO-Oximeter will enable clinicians to detect and treat life-threatening conditions earlier, improve patient outcomes, increase clinical efficiency gains, and reduce the cost of care for patients, risks related to our belief that Masimo Rainbow SET Pulse CO-Oximetry technology will provide a sufficient level of sensitivity and specificity to facilitate the noninvasive, continuous measurement of multiple blood constituents, fluid assessment and physiological parameters, risks related to our assumption that the combination of Masimo Rad-87 and Masimo Patient SafetyNet will help clinicians keep patients safe on general care floors, as well as other factors discussed in the “Risk Factors” section of our Quarterly Report on Form 10-Q for the fiscal quarter year ended April 4, 2009, filed with the Securities and Exchange Commission (“SEC”) on May 6, 2009, 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 forward-looking statements or the “Risk Factors” contained in our Quarterly Report on Form 10-Q for the fiscal quarter year ended April 4, 2009, filed with the Securities and Exchange Commission (“SEC”) on May 6, 2009, whether as a result of new information, future events or otherwise, except as may be required under the applicable securities laws.

Masimo, SET, Signal Extraction Technology, Improving Outcomes and Reducing Cost of Care by Taking Noninvasive Monitoring to New Sites and Applications, Rainbow, SpHb, SpOC, SpCO, SpMet, PVI, Radical-7, Rad-87, Rad-57, Rad-9, Rad-8, Rad-5, Pulse CO-Oximetry and Pulse CO-Oximeter are trademarks or registered trademarks of Masimo Corporation.

SOURCE Masimo

CONTACT: Dana Banks of Masimo Corporation, +1-949-297-7348

Web site: http://www.masimo.com/

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