IRVINE, Calif., Aug. 31 /PRNewswire-FirstCall/ -- Masimo Corporation (NASDAQ:MASI), the inventor of Pulse CO-Oximetry(TM) and Measure-Through Motion and Low-Perfusion pulse oximetry, today announced that its management is scheduled to present at the Thomas Weisel Partners Healthcare Conference 2009 at the Four Seasons Hotel in Boston, Massachusetts, on Thursday, September 10, 2009, at 10:20 a.m. EDT. A live audiocast of the presentation will be available on the Masimo website at http://www.masimo.com/. A replay of the audiocast will be available following the live presentation. About Masimo Masimo (NASDAQ:MASI) develops innovative monitoring technologies that significantly improve patient care-helping solve "unsolvable" problems. In 1995, the company debuted Measure-Through Motion and Low-Perfusion pulse oximetry, known as Masimo SET , which virtually eliminated false alarms and increased pulse oximetry's ability to detect life-threatening events. More than 100 independent and objective studies demonstrate Masimo SET provides the most reliable SpO2 and pulse rate measurements even under the most challenging clinical conditions, including patient motion and low peripheral perfusion. In 2005, Masimo introduced Masimo Rainbow SET Pulse CO-Oximetry(TM), a breakthrough noninvasive blood constituent monitoring platform that can measure many blood constituents that previously required invasive procedures. Masimo Rainbow SET continuously and noninvasively measures total hemoglobin (SpHb(TM)), oxygen content (SpOC(TM)), carboxyhemoglobin (SpCO ), methemoglobin (SpMet ), and PVI(TM), in addition to oxyhemoglobin (SpO2), pulse rate (PR), and perfusion index (PI), allowing early detection and treatment of potentially life-threatening conditions. Founded in 1989, Masimo has the mission of "Improving Patient Outcomes and Reducing Cost of Care by Taking Noninvasive Monitoring to New Sites and Applications." Additional information about Masimo and its products may be found at http://www.masimo.com/. Masimo Corporation Investor Contact: Media Contact: Mark P. de Raad Dana Banks Executive Vice President and Chief Manager, Financial Officer Public Relations Masimo Corporation Masimo Corporation (949) 297-7080 (949) 297-7348 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. DATASOURCE: Masimo Corporation CONTACT: Investor, Mark P. de Raad, Executive Vice President and Chief Financial Officer, +1-949-297-7080, , or Media, Dana Banks, Manager, Public Relations, +1-949-297-7348, , both of Masimo Corporation Web Site: http://www.masimo.com/

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