510(k) · Cleared
ClearedZoll X Series
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Zoll Medical Corporation, World Wide Headquarters · MKJ Automated External Defibrillators (Non-Wearable)
Cleared on May 22, 2014 as substantially equivalent to K112432 (Zoll Medical Corporation, World Wide Headquarters, 2012) and 1 other predicate after a 210-day review. Its family tree reaches back 14 generations to 1997. 2 of the 99 devices in its family, counting itself, have a Class I recall. 4 later devices descend from it.
- Decided
- May 22, 2014
- Review
- 210 days
- Class
- Class III
- Product code
- MKJ
- Recalls
- None
- Predicates
- 2
Its longest line of descent runs back 14 generations to K962603 (1997). 94 ancestors in all, the oldest K853990 (1985). 4 later devices descend from it, 2 citing it directly. 2 of the 99 devices in this family, counting this one, have a Class I recall.
- Root · 14 generations backK962603 Masimo Set MS-1 Pulse Oximeter & the Lnop Series of Sensors & CablesMasimo Corp. · 1997
- 10 generations between
- 3 generations backK091241 Masimo Rainbow Set Radical 7 Pulse CO-Oximeter; Rad 87 Pulse…Masimo Corporation · 2009
- 2 generations backK100428 Masimo Rainbow Set Radical 7R Pulse CO-OximeterMasimo Corporation · 2010
- 1 generation backK112432 Zoll X SeriesZoll Medical Corporation, World Wide Headquarters · 2012 · Recalled
- This deviceK133269 Zoll X SeriesZoll Medical Corporation, World Wide Headquarters · 2014
- Descendant · cites it directly · 2 of its ownK141774 Zoll X SeriesZOLL Medical Corporation · 2014
- Descendant · 2 generations on · 1 of its ownK202375 ZOLL Propaq MZOLL Medical Corporation · 2021
- Descendant · 3 generations on · 0 of its ownK233354 WVSM Pro (Series) (500-0030-XX)Athena Gtx, Inc. · 2024
- Descendant · cites it directly · 0 of its ownK142915 ZOLL X SeriesZOLL Medical Corporation · 2014
Show all 14 generations
- Root · 14 generations backK962603 Masimo Set MS-1 Pulse Oximeter & the Lnop Series of Sensors & CablesMasimo Corp. · 1997
- 13 generations backK973887 Masimo Set MS-1P Pulse Oximeter and the Lnop Series of Sensors and…Masimo Corp. · 1998
- 12 generations backK982255 Model 2000 Pulse OximeterIvy Biomedical Systems, Inc. · 1998
- 11 generations backK991823 N-395 Pulse Oximeter, Model N-395Nellcor Puritan Bennett, Inc. · 1999
- 10 generations backK012891 Oximax Pulse Oximetry System with N-595 Pulse Oximeter and Oximax…Nellcor Puritan Bennett, Inc. · 2002 · Recalled
- 9 generations backK021090 Oximax N-550 Pulse Oximeter,Model N-550 Pulse OximeterNellcor Puritan Bennett, Inc. · 2002
- 8 generations backK033048 Cas 740 Series Monitor, Models 740-1, 740M-1, 740-2MS, 740M-2MS…Cas Medical Systems, Inc. · 2004 · Recalled
- 7 generations backK050844 750C Series Monitor, Models 750C-2MS, 750CM-2MS, 750C-NNL…Cas Medical Systems, Inc. · 2005
- 6 generations backK060065 CAPNOSTREAM20 Two Parameter Bedside Monitor & CAPNOSTREAM10 One…Oridion Capnography, Inc. · 2006 · Recalled
- 5 generations backK072295 Capnostream 20 with A2 Adaptive Averaging SoftwareOridion Capnography, Inc. · 2007
- 4 generations backK082268 CAPNOSTREAM20 with Integrated Pulmonary IndexOridion Capnography, Inc. · 2009 · Recalled
- 3 generations backK091241 Masimo Rainbow Set Radical 7 Pulse CO-Oximeter; Rad 87 Pulse…Masimo Corporation · 2009
- 2 generations backK100428 Masimo Rainbow Set Radical 7R Pulse CO-OximeterMasimo Corporation · 2010
- 1 generation backK112432 Zoll X SeriesZoll Medical Corporation, World Wide Headquarters · 2012 · Recalled
- This deviceK133269 Zoll X SeriesZoll Medical Corporation, World Wide Headquarters · 2014
Class I recalls in this family
Most influential descendants
Showing 4 of 4 · See all- K141774Zoll X SeriesZOLL Medical Corporation · 2014 · cites it directly2descendants
- K202375ZOLL Propaq MZOLL Medical Corporation · 2021 · 2 generations on1descendant
- K233354WVSM Pro (Series) (500-0030-XX)Athena Gtx, Inc. · 2024 · 3 generations on0descendants
- K142915ZOLL X SeriesZOLL Medical Corporation · 2014 · cites it directly0descendants
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −14 | K962603 | Masimo Set MS-1 Pulse Oximeter & the Lnop Series of Sensors & Cables | Masimo Corp. | 1997 | — |
| −13 | K973887 | Masimo Set MS-1P Pulse Oximeter and the Lnop Series of Sensors and Cables | Masimo Corp. | 1998 | — |
| −12 | K982255 | Model 2000 Pulse Oximeter | Ivy Biomedical Systems, Inc. | 1998 | — |
| −11 | K991823 | N-395 Pulse Oximeter, Model N-395 | Nellcor Puritan Bennett, Inc. | 1999 | — |
| −10 | K012891 | Oximax Pulse Oximetry System with N-595 Pulse Oximeter and Oximax Sensors and… | Nellcor Puritan Bennett, Inc. | 2002 | 1 |
| −9 | K021090 | Oximax N-550 Pulse Oximeter,Model N-550 Pulse Oximeter | Nellcor Puritan Bennett, Inc. | 2002 | — |
| −8 | K033048 | Cas 740 Series Monitor, Models 740-1, 740M-1, 740-2MS, 740M-2MS, 740-2NL… | Cas Medical Systems, Inc. | 2004 | 1 |
| −7 | K050844 | 750C Series Monitor, Models 750C-2MS, 750CM-2MS, 750C-NNL, 750CM-2NL… | Cas Medical Systems, Inc. | 2005 | — |
| −6 | K060065 | CAPNOSTREAM20 Two Parameter Bedside Monitor & CAPNOSTREAM10 One Parameter… | Oridion Capnography, Inc. | 2006 | 3 |
| −5 | K072295 | Capnostream 20 with A2 Adaptive Averaging Software | Oridion Capnography, Inc. | 2007 | — |
| −4 | K082268 | CAPNOSTREAM20 with Integrated Pulmonary Index | Oridion Capnography, Inc. | 2009 | 9 |
| −3 | K091241 | Masimo Rainbow Set Radical 7 Pulse CO-Oximeter; Rad 87 Pulse CO-Oximeter | Masimo Corporation | 2009 | — |
| −2 | K100428 | Masimo Rainbow Set Radical 7R Pulse CO-Oximeter | Masimo Corporation | 2010 | — |
| −1 | K112432 | Zoll X Series | Zoll Medical Corporation, World Wide Headquarters | 2012 | 2 |
| 0 (this device) | K133269 | Zoll X Series | Zoll Medical Corporation, World Wide Headquarters | 2014 | — |
| +1 | K141774 | Zoll X Series | ZOLL Medical Corporation | 2014 | — |
| +2 | K202375 | ZOLL Propaq M | ZOLL Medical Corporation | 2021 | — |
| +3 | K233354 | WVSM Pro (Series) (500-0030-XX) | Athena Gtx, Inc. | 2024 | — |
| +1 | K142915 | ZOLL X Series | ZOLL Medical Corporation | 2014 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1985 | 1 | 0 |
| 1988 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1995 | 5 | 0 |
| 1996 | 4 | 0 |
| 1997 | 2 | 1 |
| 1998 | 5 | 0 |
| 1999 | 6 | 0 |
| 2000 | 5 | 0 |
| 2001 | 2 | 0 |
| 2002 | 6 | 1 |
| 2003 | 6 | 0 |
| 2004 | 5 | 0 |
| 2005 | 6 | 0 |
| 2006 | 4 | 0 |
| 2007 | 1 | 0 |
| 2008 | 4 | 0 |
| 2010 | 3 | 0 |
| 2011 | 5 | 0 |
| 2012 | 1 | 0 |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 2014 | 2 | 0 |
| 2021 | 1 | 0 |
| 2024 | 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.
- Candidate predicates for a device like this, rankedin the report
- Recall history across each candidate’s familyin 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 |
|---|---|---|---|
| * | K112432 | Zoll X Series | 2012 |
| * | K120907 | Zoll R SeriesSummary page 2…on monitoring). X Series software has been revised to support the OneStep Pediatric CPR Electrode. This electrode was previously cleared for use with the ZOLL R Series (K 120907). As in the R Series, the electrode will enable the X Series device to provide CPR monitoring for Pediatric patients. The labelin… | 2012 |
What descends from it? (4)
2 later devices cite it directly; ranked here by how many devices descend from each in turn.
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 17 years and passes through 7 companies; a new generation was cleared every 1.1 years on median.
- 21 of the 94 ancestors have a recall of any class; 2 have a Class I recall.
- Of its descendants, K141774 (ZOLL Medical Corporation, 2014) has gone furthest, with 2 descendants of its own.
- 2 other devices also cite its predicate K112432.
How does its category compare?
All MKJ devicesMKJ Automated External Defibrillators (Non-Wearable): FDA decisions, review times, recalls and adverse event reports over 20 years. 2014, this device’s year, is highlighted.
FDA decisions per year · MKJ
48in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · MKJ
156in 2015
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · MKJ
1in 2025
Class I (23 since 2007) Class II/III not classified
Adverse event reports per year · MKJ
13,315in 2025
MAUDE reports naming product code MKJ, 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 | 7 | 69 | 12 | 3,958 |
| 2008 | 13 | 141 | 24 | 4,752 |
| 2009 | 8 | 165 | 37 | 6,782 |
| 2010 | 4 | 250 | 35 | 7,399 |
| 2011 | 11 | 36 | 7 | 8,170 |
| 2012 | 10 | 197 | 5 (1) | 9,732 |
| 2013 | 7 | 191 | 4 | 14,955 |
| 2014 | 11 | 196 | 24 (15) | 15,399 |
| 2015 | 6 | 156 | 1 | 16,129 |
| 2016 | 0 | — | 2 (1) | 17,062 |
| 2017 | 4 | — | 6 (4) | 16,684 |
| 2018 | 20 | — | 3 | 16,591 |
| 2019 | 25 | — | 6 (2) | 16,861 |
| 2020 | 52 | — | 2 | 16,197 |
| 2021 | 41 | — | 4 | 16,300 |
| 2022 | 19 | — | 3 | 14,867 |
| 2023 | 24 | — | 11 | 13,766 |
| 2024 | 27 | — | 5 | 15,109 |
| 2025 | 48 | — | 1 | 13,315 |
| 2026 | 31 | — | 3 | — |
What is it indicated for?
The X Series is intended for use by trained medical personnel who are familiar with basic monitoring, vital sign assessment, emergency cardiac care, and the use of the X Series. The X Series is also intended for use by (or on the order of) physicians at the scene of an emergency or in a hospital emergency room, intensive care unit, cardiac care unit, or other similar areas of a hospital. The usage may be in an ambulance or at the scene of an emergency.…
Read the full statement (1,082 words)
The X Series is intended for use by trained medical personnel who are familiar with basic monitoring, vital sign assessment, emergency cardiac care, and the use of the X Series. The X Series is also intended for use by (or on the order of) physicians at the scene of an emergency or in a hospital emergency room, intensive care unit, cardiac care unit, or other similar areas of a hospital. The usage may be in an ambulance or at the scene of an emergency. It is also intended to be used during the transport of patients. The X Series will be used primarily on patients experiencing symptoms of cardiac arrest or in post trauma situation. It may also be used whenever it is required to monitor any of those functions that are included (as options) in the device. The X Series unit can be used on pediatric patients (as described in the following table) and on adult patients (21 years of age or older) with and without heart dysfunction.
Pediatric Patient Subpopulation Approximate Age Range
Newborn (neonate) Birth to 1 month of age.
Infant 1 month to 2 year of age.
Child 2 to 12 years of age.
Adolescent 12 to 21 years of age.
When the pediatric patient is less than 8 years of age or weighs less than 55 lbs. (25 kg.), use ZOLL pediatric defibrillation electrodes. Do not delay therapy to determine the patient's exact age or weight.
Manual Defibrillation
Use of the X Series in the manual mode for external and internal defibrillation is indicated on victims of cardiac arrest where there is apparent lack of circulation as indicated by:
*Unconsciousness.
*Absence of breathing.
*Absence of pulse.
This product should be used only by qualified medical personnel for converting ventricular fibrillation and rapid ventricular tachycardia to sinus rhythm or other cardiac rhythms capable of producing hemodynamically significant heart beats.
The unit can also be used for synchronized cardioversion of certain atrial or ventricular arrhythmias. Qualified medical personnel must decide when synchronized cardioversion is appropriate.
The patient population will range from newborn (neonate) to adult.
Semiautomatic Operation (AED)
X Series products are designed for use by emergency care personnel who have completed training and certification requirements applicable to the use of a defibrillator where the device operator controls delivery of shocks to the patient.
They are specifically designed for use in early defibrillation programs where the delivery of a defibrillator shock during resuscitation involving CPR, transportation, and definitive care are incorporated into a medically-approved patient care protocol.
Use of the X Series in the Semiautomatic mode for defibrillation is indicated on victims of cardiac arrest where there is apparent lack of circulation as indicated by:
* Unconsciousness.
*Absence of breathing.
* Absence of pulse.
When the patient is less than 8 years of age or weighs less that 55 lbs. (25 Kg), you must use ZOLL pediatric defibrillation electrodes. Do not delay therapy to determine patient's exact age or weight.
ECG Monitoring
The X Series is intended for use to monitor and/or record 3-, 5-, or 12-lead ECG waveform and heart rate, and to alarm when heart rate is above or below limits set by the operator. The patient population will range from newborn (neonate) to adult, with and without heart dysfunction.
CPR Monitoring
The CPR monitoring function provides visual and audio feedback designed to encourage rescuers to perform chest compressions at the AHA/ERC recommended rate of 100 compressions per minute. Voice and visual prompts encourage a minimum compression depth of at least 1.5 (3.8 cm) or 2.0 Inches (5.0 cm), depending on the configuration, for adult patients.
External Transcutaneous Pacing
This product can be used for temporary external cardiac pacing in conscious or unconscious patients as an alternative to endocardial stimulation. The purposes of pacing Include:
*Resuscitation from standstill or bradycardia of any etiology:
*As a standby when standstill or bradycardia might be expected:
*Suppression of tachycardia.
*Pediatric pacing.
Non-Invasive Blood Pressure Monitoring
The X Series is intended for use to make non-invasive measurements of arterial pressure and heart rate, and to alarm if either parameter is outside of the limits set by the user. Measurements are made using an inflatable cuff on the patient's arm or leg. The patient population will range from newborn (neonate) to adult.
Temperature Monitoring
The X Series is intended for use to make continuous temperature measurements of rectal, esophageal, or surface temperatures, and to alarm if the temperature is outside of the limits set by the user. The patient population will range from newborn (neonate) to adult.
SpO2 Monitoring
The X Series pulse CO-oximeter, with Masimo Rainbow SET technology and the Rainbow series of sensors, is intended for use for continuous noninvasive monitoring of functional oxygen saturation of arterial hemoglobin (SpO2), pulse rate, carboxyhemoglobin saturation (SpCO), and/or methemoglobin saturation (SpMet). The pulse CO-oximeter and accessories are indicated for use on 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, or in mobile environments.
Respiration Monitoring
The X Series is intended for use to continuously monitor respiration rate and to alarm if the rate falls outside of the range set by the operator. Because the measurement method actually measures respiratory effort, apnea episodes with continued respiratory effort (such as obstructive apnea) may not be detected. It is not intended to be used as an apnea monitor. The patient population will range from newborn (neonate) to adult.
CO2 Monitoring
The X Series is intended for use to make continuous noninvasive measurement and monitoring of carbon dioxide concentration of the expired and inspired breath and breath rate. The patient population will range from newborn (neonate) to adult.
Invasive Pressure Monitoring
The X Series is intended for use to display and make continuous invasive pressure measurements from any compatible pressure transducer. The primary intended uses are arterial blood pressure, central venious pressure and intracranial pressure monitoring. Any contraindications of the particular transducer selected by the user shall apply. The patient population will range from newborn (neonate) to adult.
12-Lead Analysis
The 12-lead ECG Analysis is intended for use in acquiring, analyzing and reporting ECG data, and to provide interpretation of the data for consideration by caregivers. The interpretations of ECG data offered by the device are only significant when used in conjunction with caregiver overread as well as consideration of all other relevant patient data. The 12-lead ECG Analysis is intended for use on adults (> 18 yearn of age).
Indications for use as stated in the FDA summary.
https://510kreport.com/device/K133269 · printed Nov 6, 2026
Cite this page
510(k) Report. “K133269: Zoll X Series.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K133269
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Record history
- FDA decision record loaded May 2, 2026
- Summary read Oct 13, 2026 (extraction version 9eaa42aa01ed)
- Lineage and recalls computed Nov 3, 2026
- Page last updated Nov 3, 2026