Masimo
Encyclopedia
Masimo Corporation is an Irvine, California-based manufacturer of non-invasive patient monitoring technologies. The company is best known for its pulse oximetry
Pulse oximetry
Pulse oximetry is a non-invasive method allowing the monitoring of the oxygenation of a patient's hemoglobin.A sensor is placed on a thin part of the patient's body, usually a fingertip or earlobe, or in the case of an infant, across a foot....

 and it sells more pulse oximeters than any other company. Masimo was founded in 1989 by electrical engineer Joe E. Kiani, who was later joined by fellow engineer Mohamed Diab. Masimo invented measure-through motion and low perfusion pulse oximetry, known as Masimo SET (Signal Extraction Technology). Masimo has been recognized for its intellectual property and for being one of the most innovative companies in the medical device industry. The company went public in 2007 and is currently traded on the NASDAQ stock exchange under the symbol MASI. In 2011, Forbes named Masimo to its list of top 20 public companies under a billion dollars in revenue, based on earnings growth, sales growth, and return on equity.

Masimo SET Pulse Oximetry

Conventional pulse oximetry assumes that arterial blood is the only blood moving (pulsating) in the measurement site. However, during patient motion, the venous blood also moves, which can cause conventional pulse oximetry to under-read arterial oxygen saturation levels because it cannot distinguish between the arterial and venous blood. Masimo SET signal processing identifies the venous blood signal (which has a lower oxygen saturation level than arterial blood), isolates it, and uses adaptive filters to cancel the noise and extract the arterial signal in order to report accurate arterial oxygen saturation and pulse rate. Multiple studies have shown that Masimo SET increases pulse oximetry's ability to detect life threatening events and reduce false alarms. Additional studies have also shown the impact of Masimo SET on patient outcomes, such as helping clinicians detect congenital heart disease in newborns and reduce retinopathy of prematurity in premature infants.

Rainbow Pulse CO-Oximetry

Rainbow Pulse CO-Oximetery continuously and non-invasively measures hemoglobin (SpHb), carboxyhemoglobin (SpCO), methemoglobin (SpMet), and pleth variability index (PVI), in addition to oxyhemoglobin (SpO2), perfusion index (PI) and pulse rate. A study at Massachusetts General Hospital showed that SpHb monitoring helped clinicians decrease the frequency of patients receiving blood transfusions during surgery from 4.5% to 0.6%. An emergency department study showed that SpCO increased the detection of carbon monoxide poisoning. Another study showed that PVI monitoring helped clinicians decrease fluid administered during surgery and reduce patient risk.

The World Health Organization called Masimo's Pronto-7 non-invasive hemoglobin spot-check device an “innovative medical technology for cost-effectively addressing global health concerns and needs” and the device has been recognized with a gold Medical Design Excellence Award In December 2010, Masimo announced a voluntary recall of the Pronto-7 to address a design issue related to inaccurate readings in certain conditions.

SafetyNet

Masimo SafetyNet is a remote monitoring and notification system designed for patients on general care floors. A large study by Dartmouth-Hitchcock Medical Center
Dartmouth-Hitchcock Medical Center
Dartmouth-Hitchcock Medical Center is New Hampshire's only academic medical center and is headquartered on a campus in the heart of the Upper Connecticut River Valley, in Lebanon, New Hampshire....

 showed SafetyNet helped clinicians achieve a 65% reduction in distress codes and rescue activations and a 48% decrease in patient transfers to intensive care units, yielding a savings of 163 ICU days annually. ECRI Institute
ECRI Institute
ECRI Institute is a nonprofit organization located in the United States, United Kingdom, United Arab Emirates, and Malaysia, that uses applied scientific research in healthcare to help establish best practices to improving patient care. ECRI Institute is designated as a Collaborating Center of...

 gave Dartmouth its Health Devices Achievement Award for its use of SafetyNet to prevent "severe patient harm". Masimo recently debuted Halo Index in the SafetyNet system, combining multiple physiologic parameters into one number to help clinicians assess overall patient status.

Rainbow Acoustic Monitoring

Rainbow Acoustic Monitoring provides non-invasive and continuous measurement of respiration
Respiration (physiology)
'In physiology, respiration is defined as the transport of oxygen from the outside air to the cells within tissues, and the transport of carbon dioxide in the opposite direction...

 rate using an adhesive
Adhesive
An adhesive, or glue, is a mixture in a liquid or semi-liquid state that adheres or bonds items together. Adhesives may come from either natural or synthetic sources. The types of materials that can be bonded are vast but they are especially useful for bonding thin materials...

 sensor with an integrated acoustic
Acoustics
Acoustics is the interdisciplinary science that deals with the study of all mechanical waves in gases, liquids, and solids including vibration, sound, ultrasound and infrasound. A scientist who works in the field of acoustics is an acoustician while someone working in the field of acoustics...

transducer that is applied to the patient's neck. Researchers have evaluated acoustic respiration rate (RRa) and found the acceptable accuracy and significantly fewer false alarms than traditional respiration rate monitoring methods, end-tidal carbon dioxide (EtCO2) and impedance pneumography.

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