510(k) · Cleared
ClearedMasimo Root Monitoring System
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Masimo Corporation · MWI Monitor, Physiological, Patient (Without Arrhythmia Detection Or Alarms)
Cleared on Aug 12, 2026 as substantially equivalent to K191882 (Masimo Corporation, 2020) and 1 other predicate after a 315-day review. Its family tree reaches back 21 generations to 1997. 2 of the 99 devices in its family, counting itself, have a Class I recall.
- Decided
- Aug 12, 2026
- Review
- 315 days
- Class
- Class II
- Product code
- MWI
- Recalls
- None
- Predicates
- 2
Its longest line of descent runs back 21 generations to K962603 (1997). 98 ancestors in all, the oldest K853990 (1985). No later device cites it as a predicate yet. 2 of the 99 devices in this family, counting this one, have a Class I recall.
- Root · 21 generations backK962603 Masimo Set MS-1 Pulse Oximeter & the Lnop Series of Sensors & CablesMasimo Corp. · 1997
- 17 generations between
- 3 generations backK151644 Masimo Root Vital Signs Monitoring System and AccessoriesMasimo Corporation · 2016
- 2 generations backK171121 Masimo Root Monitoring System and AccessoriesMasimo Corporation · 2017
- 1 generation backK191882 Masimo Centroid SystemMasimo Corporation · 2020
- This deviceK253417 Masimo Root Monitoring SystemMasimo Corporation · 2026
Show all 21 generations
- Root · 21 generations backK962603 Masimo Set MS-1 Pulse Oximeter & the Lnop Series of Sensors & CablesMasimo Corp. · 1997
- 20 generations backK973887 Masimo Set MS-1P Pulse Oximeter and the Lnop Series of Sensors and…Masimo Corp. · 1998
- 19 generations backK982255 Model 2000 Pulse OximeterIvy Biomedical Systems, Inc. · 1998
- 18 generations backK991823 N-395 Pulse Oximeter, Model N-395Nellcor Puritan Bennett, Inc. · 1999
- 17 generations backK012891 Oximax Pulse Oximetry System with N-595 Pulse Oximeter and Oximax…Nellcor Puritan Bennett, Inc. · 2002 · Recalled
- 16 generations backK021090 Oximax N-550 Pulse Oximeter,Model N-550 Pulse OximeterNellcor Puritan Bennett, Inc. · 2002
- 15 generations backK033048 Cas 740 Series Monitor, Models 740-1, 740M-1, 740-2MS, 740M-2MS…Cas Medical Systems, Inc. · 2004 · Recalled
- 14 generations backK050844 750C Series Monitor, Models 750C-2MS, 750CM-2MS, 750C-NNL…Cas Medical Systems, Inc. · 2005
- 13 generations backK060065 CAPNOSTREAM20 Two Parameter Bedside Monitor & CAPNOSTREAM10 One…Oridion Capnography, Inc. · 2006 · Recalled
- 12 generations backK072295 Capnostream 20 with A2 Adaptive Averaging SoftwareOridion Capnography, Inc. · 2007
- 11 generations backK082268 CAPNOSTREAM20 with Integrated Pulmonary IndexOridion Capnography, Inc. · 2009 · Recalled
- 10 generations backK091241 Masimo Rainbow Set Radical 7 Pulse CO-Oximeter; Rad 87 Pulse…Masimo Corporation · 2009
- 9 generations backK100428 Masimo Rainbow Set Radical 7R Pulse CO-OximeterMasimo Corporation · 2010
- 8 generations backK110516 Connex Vital Signs Monitor 6000 SeriesWelch Allyn, Inc. · 2011
- 7 generations backK112687 Connex (R) Vital Signs Monitor 6000 SeriesWelch Allyn, Inc. · 2011
- 6 generations backK121013 Connex Vital Signs Monitor 6000 SeriesWelch Allyn, Inc. · 2012
- 5 generations backK140188 Masimo Root Monitoring SystemMasimo Corporation · 2014
- 4 generations backK142394 Masimo Root Monitoring System and AccesoriesMasimo Corporation · 2014
- 3 generations backK151644 Masimo Root Vital Signs Monitoring System and AccessoriesMasimo Corporation · 2016
- 2 generations backK171121 Masimo Root Monitoring System and AccessoriesMasimo Corporation · 2017
- 1 generation backK191882 Masimo Centroid SystemMasimo Corporation · 2020
- This deviceK253417 Masimo Root Monitoring SystemMasimo Corporation · 2026
Class I recalls in this family
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −21 | K962603 | Masimo Set MS-1 Pulse Oximeter & the Lnop Series of Sensors & Cables | Masimo Corp. | 1997 | — |
| −20 | K973887 | Masimo Set MS-1P Pulse Oximeter and the Lnop Series of Sensors and Cables | Masimo Corp. | 1998 | — |
| −19 | K982255 | Model 2000 Pulse Oximeter | Ivy Biomedical Systems, Inc. | 1998 | — |
| −18 | K991823 | N-395 Pulse Oximeter, Model N-395 | Nellcor Puritan Bennett, Inc. | 1999 | — |
| −17 | K012891 | Oximax Pulse Oximetry System with N-595 Pulse Oximeter and Oximax Sensors and… | Nellcor Puritan Bennett, Inc. | 2002 | 1 |
| −16 | K021090 | Oximax N-550 Pulse Oximeter,Model N-550 Pulse Oximeter | Nellcor Puritan Bennett, Inc. | 2002 | — |
| −15 | K033048 | Cas 740 Series Monitor, Models 740-1, 740M-1, 740-2MS, 740M-2MS, 740-2NL… | Cas Medical Systems, Inc. | 2004 | 1 |
| −14 | K050844 | 750C Series Monitor, Models 750C-2MS, 750CM-2MS, 750C-NNL, 750CM-2NL… | Cas Medical Systems, Inc. | 2005 | — |
| −13 | K060065 | CAPNOSTREAM20 Two Parameter Bedside Monitor & CAPNOSTREAM10 One Parameter… | Oridion Capnography, Inc. | 2006 | 3 |
| −12 | K072295 | Capnostream 20 with A2 Adaptive Averaging Software | Oridion Capnography, Inc. | 2007 | — |
| −11 | K082268 | CAPNOSTREAM20 with Integrated Pulmonary Index | Oridion Capnography, Inc. | 2009 | 9 |
| −10 | K091241 | Masimo Rainbow Set Radical 7 Pulse CO-Oximeter; Rad 87 Pulse CO-Oximeter | Masimo Corporation | 2009 | — |
| −9 | K100428 | Masimo Rainbow Set Radical 7R Pulse CO-Oximeter | Masimo Corporation | 2010 | — |
| −8 | K110516 | Connex Vital Signs Monitor 6000 Series | Welch Allyn, Inc. | 2011 | — |
| −7 | K112687 | Connex (R) Vital Signs Monitor 6000 Series | Welch Allyn, Inc. | 2011 | — |
| −6 | K121013 | Connex Vital Signs Monitor 6000 Series | Welch Allyn, Inc. | 2012 | — |
| −5 | K140188 | Masimo Root Monitoring System | Masimo Corporation | 2014 | — |
| −4 | K142394 | Masimo Root Monitoring System and Accesories | Masimo Corporation | 2014 | — |
| −3 | K151644 | Masimo Root Vital Signs Monitoring System and Accessories | Masimo Corporation | 2016 | — |
| −2 | K171121 | Masimo Root Monitoring System and Accessories | Masimo Corporation | 2017 | — |
| −1 | K191882 | Masimo Centroid System | Masimo Corporation | 2020 | — |
| 0 (this device) | K253417 | Masimo Root Monitoring System | Masimo Corporation | 2026 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1985 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1995 | 5 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 1 |
| 1998 | 4 | 0 |
| 1999 | 6 | 0 |
| 2000 | 7 | 0 |
| 2001 | 2 | 0 |
| 2002 | 6 | 1 |
| 2003 | 6 | 0 |
| 2004 | 7 | 0 |
| 2005 | 5 | 0 |
| 2006 | 3 | 0 |
| 2008 | 1 | 0 |
| 2009 | 2 | 0 |
| 2010 | 5 | 0 |
| 2011 | 2 | 0 |
| 2013 | 1 | 0 |
| 2014 | 1 | 0 |
| 2017 | 1 | 0 |
Sources: FDA 510(k) database (decision fields), the FDA summary (predicates and indications), FDA recall and enforcement reports, and MAUDE; processed by 510(k) Report. Verify on FDA.gov · Methodology and accuracy.
2 devices in this family have a Class I recall. A 510(k) Report weighs predicate choices, recall history and review times for a new device like this one.
Top candidate predicates for a new MWI device
- #1 K230457 Empatica Health Monitoring Platform…score 28.0 · 39 generations · no Class I recall
- #2 Held for the reportin the report
- #3 Held for the reportin the report
What was it cleared against? (2)
Devices the submitter claimed this one is substantially equivalent to (*), and reference devices cited for a specific test or feature (†), as written in the FDA summary.
| Type | Number | Device | Decided |
|---|---|---|---|
| * | K191882 | Masimo Centroid SystemSummary page 7…Registration Number: 2031172 Reason for Premarket Notification: Device modification to add expanded indication for use Predicate Device: K191882 - Masimo Root Monitoring System and Accessories Secondary Predicate: K163334 - LiDCOUnity Monitor Referen… | 2020 |
| * | K163334 | LiDCOunity v2 Hemodynamic MonitorSummary page 7…dd expanded indication for use Predicate Device: K191882 - Masimo Root Monitoring System and Accessories Secondary Predicate: K163334 - LiDCOUnity Monitor Reference Device: K242451- HemoSphere Alta Advanced Monitoring Platform Performan… | 2017 |
| † | K242451 | HemoSphere Alta Advanced Monitoring Platform (ALTAALL1/ALTCR1/ALTASR1); HemoSphere Alta-… | 2024 |
| † | K071047 | Masimo Patient Safety Net | 2007 |
What descends from it?
No later submission names this one as a predicate yet.
Has anything in its family been recalled? (2 Class I)
No FDA recall names this device.
Relatives with a Class I recall
Class I is FDA’s most serious recall class. A recall in the family tree is context for this device, not evidence about it.
What does this lineage say?
- The line of descent spans 29 years and passes through 7 companies; a new generation was cleared every 11 months on median.
- 21 of the 98 ancestors have a recall of any class; 2 have a Class I recall.
- 1 other device also cites its predicate K191882.
How does its category compare?
All MWI devicesMWI Monitor, Physiological, Patient (Without Arrhythmia Detection Or Alarms): FDA decisions, review times, recalls and adverse event reports over 20 years. 2026, this device’s year, is highlighted.
FDA decisions per year · MWI
4in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · MWI
247in 2025
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · MWI
9so far in 2026, the most since 2007
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · MWI
182in 2025
MAUDE reports naming product code MWI, not matched to any one device; reports are not rates.
View these four charts as a table
| Year | Decisions | Median 510(k) review, days | Recalls (Class I) | MAUDE reports |
|---|---|---|---|---|
| 2007 | 9 | 42 | 1 | 3 |
| 2008 | 9 | 49 | 1 | 3 |
| 2009 | 6 | 112 | 2 | 20 |
| 2010 | 17 | 58 | 2 | 17 |
| 2011 | 11 | 78 | 3 | 16 |
| 2012 | 13 | 104 | 5 | 31 |
| 2013 | 20 | 85 | 3 | 42 |
| 2014 | 16 | 148 | 6 | 30 |
| 2015 | 19 | 127 | 1 | 31 |
| 2016 | 12 | 165 | 0 | 51 |
| 2017 | 13 | 205 | 2 | 85 |
| 2018 | 11 | 217 | 0 | 158 |
| 2019 | 14 | 255 | 4 | 169 |
| 2020 | 8 | 138 | 0 | 110 |
| 2021 | 9 | 161 | 0 | 188 |
| 2022 | 5 | 231 | 2 | 168 |
| 2023 | 8 | 250 | 0 | 179 |
| 2024 | 10 | 202 | 5 | 120 |
| 2025 | 4 | 247 | 0 | 182 |
| 2026 | 6 | 239 | 9 | — |
What is it indicated for?
The Masimo Root Monitoring System is indicated for use by healthcare professionals for the monitoring of multiple physiological parameters in healthcare environments. The Root Monitoring System, when used with the optional ISA module, is not intended to be used in road ambulances. The Masimo Root Monitoring System can communicate with network systems for supplemental remote viewing and alarming (e.g., at a central station). The Radical-7 and Accessories…
Read the full statement (1,133 words)
The Masimo Root Monitoring System is indicated for use by healthcare professionals for the monitoring of multiple physiological parameters in healthcare environments. The Root Monitoring System, when used with the optional ISA module, is not intended to be used in road ambulances.
The Masimo Root Monitoring System can communicate with network systems for supplemental remote viewing and alarming (e.g., at a central station).
The Radical-7 and Accessories are indicated for the continuous non-invasive monitoring of functional oxygen saturation of arterial hemoglobin (SpO2) and pulse rate (PR) of adult, pediatric, and neonatal patients during both no motion and motion conditions, and for patients who are well or poorly perfused in hospitals, hospital-type facilities, mobile, and home environments.
The Radical-7 and Accessories are indicated for the continuous non-invasive monitoring of carboxyhemoglobin saturation (SpCO) of adult, pediatric, and infant patients during no motion conditions in hospitals and hospital-type facilities.
The Radical-7 and Accessories are not intended to be used as the sole basis for making diagnosis or treatment decisions related to suspected carbon monoxide poisoning; it is intended to be used in conjunction with additional methods of assessing clinical signs and symptoms.
The Radical-7 and Accessories are indicated for the continuous non-invasive monitoring of methemoglobin saturation (SpMet) of adult, pediatric, and neonatal patients during no motion conditions in hospitals and hospital-type facilities.
The Radical-7 and Accessories are indicated for the continuous non-invasive monitoring of total hemoglobin concentration (SpHb) of adult and pediatric patients during no motion conditions in hospitals and hospital-type facilities.
The Radical-7 and Accessories are indicated for the continuous non-invasive monitoring of respiratory rate (RRa) for adult, pediatric, and neonatal patients during no motion conditions in hospitals, hospital-type facilities, home environments, and transport within healthcare facilities.
The Radical-7 and Accessories are indicated for the continuous non-invasive monitoring of Respiratory Rate from photoplethysmogram (RRp) for adult and pediatric patients during no motion conditions in hospitals, hospital- type facilities, home environments, and transport within healthcare facilities.
The Radius-7 Accessories are indicated for the continuous non-invasive monitoring of functional oxygen saturation of arterial hemoglobin (SpO2) and pulse rate (PR) of adult, pediatric, and neonatal patients during both no motion and motion conditions, and for patients who are well or poorly perfused in hospitals, hospital-type facilities, mobile, and home environments.
The Radius-7 and Accessories are indicated for the continuous non-invasive monitoring of carboxyhemoglobin saturation (SpCO) of adult, pediatric, and infant patients during no motion conditions in hospitals and hospital-type facilities. The Masimo Radius and Accessories are not intended to be used as the sole basis for making diagnosis or treatment decisions related to suspected carbon monoxide poisoning; it is intended to be used in conjunction with additional methods of assessing clinical signs and symptoms.
The Radius-7 and Accessories are indicated for the continuous non-invasive monitoring of methemoglobin saturation (SpMet) of adult, pediatric, and neonatal patients during no motion conditions in hospitals and hospital-type facilities.
The Radius-7 and Accessories are indicated for the continuous non-invasive monitoring of total hemoglobin concentration (SpHb) of adult and pediatric patients during no motion conditions in hospitals and hospital-type facilities.
The Radius-7 and Accessories are indicated for the continuous non-invasive monitoring of respiratory rate (RRa) for adult, pediatric, and neonatal patients during no motion conditions in hospitals, hospital-type facilities, home environments, and transport within healthcare facilities.
The Radius-7 and Accessories are indicated for the continuous non-invasive monitoring of Respiratory Rate from Pleth (RRp) for adult and pediatric patients during no motion conditions in hospitals, hospital-type facilities, home environments, and transport within healthcare facilities.
The optional ISA product family consists of three types of sidestream gas analyzers (ISA CO2, ISA AX+ and ISA OR+), intended to be connected to other medical backboard devices for monitoring of breath rate and the following breathing gases:
ISA CO2: CO2
ISA AX+: CO2, N20, Halothane, Isoflurane, Enflurane, Sevoflurane and Desflurane
ISA OR+: CO2, 02, N20, Halothane, Isoflurane, Enflurane, Sevoflurane and Desflurane
ISA CO2, ISA AX+ and ISA OR+ are intended to be connected to a patient breathing circuit for monitoring of inspired/expired gases during anesthesia, recovery and respiratory care.
The intended environment is the operating suite, intensive care unit and patient room. ISA CO2 is also intended to be used in road ambulances. The intended patient population is adult, pediatric and infant patients.
The optional SedLine Sedation Monitor is indicated for use in the operating room (OR), intensive care unit (ICU), and clinical research laboratory. It is intended to monitor the state of the brain by real-time data acquisition and processing of EEG signals. The system includes the Patient State Index (PSI), a proprietary computed EEG variable that is related to the effect of anesthetic agents.
The optional temperature module is indicated to measure temperature (oral, adult axillary, pediatric axillary, and rectal) of adult and pediatric patients. The device is intended to be used by clinicians and medically qualified personnel. It is available for sale only upon the order of a physician or licensed health care provider.
The optional non-invasive blood pressure (NIBP) module is indicated for the noninvasive measurement of arterial blood pressure in healthcare environments. The NIBP module is designed to measure blood pressure for patient population described in the following table:
Patient Population Approximate Age Range
Newborn (neonate) Birth to 1 month of age
Infant 1 month to 2 years of age
Child 2 to 12 years of age
Adolescent 12-21 years of age
Adult 21 years of age and older
The optional Centroid System is intended for monitoring the orientation and activity of patients. The Centroid System is intended to provide alerts when patient orientation or activity deviates from parameters set by healthcare providers. The Centroid System is indicated for monitoring the orientation and activity of patients including those susceptible to pressure ulcers. The Centroid System is intended for use in hospitals, hospital-type facilities, and healthcare facilities.
The Centroid System is also indicated for the measurement of respiration rate of adults in healthcare environments.
The LIDCO Module is intended for adult patients requiring cardiovascular monitoring who have peripheral arterial pressure monitoring in hospital and hospital-type settings.
The LIDCO Module is intended for use under the direct supervision of a licensed healthcare practitioner or by personnel trained in its proper use for the measurement of blood pressure, cardiac output and associated hemodynamic parameters in adult patients.
It digitizes, analyses & transfers the hemodynamic parameters derived from the analog signal obtained from vital signs monitor to a host device (e.g. Root) for display.
In addition to arterial blood pressure parameters (Sys, MAP, Dia) and cardiac output, the LIDCO Module calculates a number of derived parameters:
Oxygen Delivery and Oxygen Delivery Index, Oxygen Consumption and Oxygen Consumption Index, Cardiac Index, Stroke Volume and Stroke Volume Index, Heart Rate, Systemic Vascular Resistance and Systemic Vascular Resistance Index, Stroke Volume Variation %, Pulse Pressure Variation % and Body Surface Area
Indications for use read by OCR from a scanned FDA summary, so letters may be misread. Check the PDF before quoting it.
https://510kreport.com/device/K253417 · printed Nov 5, 2026
Cite this page
510(k) Report. “K253417: Masimo Root Monitoring System.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 5, 2026. https://510kreport.com/device/K253417
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Record history
- FDA decision record loaded Oct 30, 2026
- Summary read Oct 30, 2026 (extraction version 2d9447fa9ea4)
- Lineage and recalls computed Nov 3, 2026
- Page last updated Nov 3, 2026