510(k) · Cleared
ClearedZio AT ECG Monitoring System, ZEUS System
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
iRhythm Technologies, Inc. · DQK Computer, Diagnostic, Programmable
Cleared on Aug 29, 2018 as substantially equivalent to K163512 (iRhythm Technologies, Inc., 2017) after an 83-day review. Its family tree reaches back 12 generations to 1988. 12 later devices descend from it.
- Decided
- Aug 29, 2018
- Review
- 83 days
- Class
- Class II
- Product code
- DQK
- Recalls
- None
- Predicates
- 1
Its longest line of descent runs back 12 generations to K882803 (1988). 53 ancestors in all, the oldest K881905 (1988). 12 later devices descend from it, 2 citing it directly.
- Root · 12 generations backK882803 ET HI-Flow Soft Tip/ET HI-Flow/Enhanced Torque STAdvanced Cardiovascular Systems, Inc. · 1988
- 8 generations between
- 3 generations backK113372 Nuvant, Mobilc Cardiac TelemetryCorventis, Inc. · 2012
- 2 generations backK133701 Nuvant MCT SystemCorventis, Inc. · 2014
- 1 generation backK163512 Zio AT ECG Monitoring SystemiRhythm Technologies, Inc. · 2017 · Recalled
- This deviceK181502 Zio AT ECG Monitoring System, ZEUS SystemiRhythm Technologies, Inc. · 2018
- Descendant · cites it directly · 6 of its ownK210822 DeepRhythmAIMedicalgorithmics S.A. · 2022
- Descendant · cites it directly · 4 of its ownK190593 Zio XT ECG Monitoring System, Zio AT ECG Monitoring SystemiRhythm Technologies, Inc. · 2019
- Descendant · 2 generations on · 3 of its ownK241197 DeepRhythmAIMedicalgorithmics S.A. · 2024
- Descendant · 2 generations on · 3 of its ownK202527 Zio ECG Utilization Software (ZEUS) SystemiRhythm Technologies, Inc. · 2021
- Descendant · 3 generations on · 1 of its ownK250932 DeepRhythmAIMedicalgorithmics S.A. · 2025
Show all 12 generations
- Root · 12 generations backK882803 ET HI-Flow Soft Tip/ET HI-Flow/Enhanced Torque STAdvanced Cardiovascular Systems, Inc. · 1988
- 11 generations backK012241 Cardionet Ambulatory Ecg Monitor with Arrhythmia Detection, Model…Cardionet, Inc. · 2002
- 10 generations backK052240 Cardionet Ambulatory Ecg Monitor with Arrhythmia Detection, Model 1002Cardionet, Inc. · 2005
- 9 generations backK063222 Cardionet Ambulatory Ecg Monitor with Arrhythmia Detection, Model…Cardionet, Inc. · 2006
- 8 generations backK072558 Cardionet Ambulatory Ecg Monitor with Arrhythmia Detection, Model…Cardionet, Inc. · 2007
- 7 generations backK083287 Avivo Mobile Patient Management SystemCorventis, Inc. · 2009
- 6 generations backK090696 Nuvant Cardiac Event Monitoring System; Nuvant Mobile Cardiac…Corventis, Inc. · 2009
- 5 generations backK091971 Avivo Mobile Patient Management System, Nuvant Mobile Cardiac…Corventis, Inc. · 2009
- 4 generations backK111917 Nuvant, Mobile Cardiac TelemetryCorventis, Inc. · 2011
- 3 generations backK113372 Nuvant, Mobilc Cardiac TelemetryCorventis, Inc. · 2012
- 2 generations backK133701 Nuvant MCT SystemCorventis, Inc. · 2014
- 1 generation backK163512 Zio AT ECG Monitoring SystemiRhythm Technologies, Inc. · 2017 · Recalled
- This deviceK181502 Zio AT ECG Monitoring System, ZEUS SystemiRhythm Technologies, Inc. · 2018
Showing 5 of 12 descendants. See all descendants
Descendants cleared per year
Most influential descendants
Showing 5 of 12 · See all- K210822DeepRhythmAIMedicalgorithmics S.A. · 2022 · cites it directly6descendants
- K190593Zio XT ECG Monitoring System, Zio AT ECG Monitoring SystemiRhythm Technologies, Inc. · 2019 · cites it directly4descendants
- K241197DeepRhythmAIMedicalgorithmics S.A. · 2024 · 2 generations on3descendants
- K202527Zio ECG Utilization Software (ZEUS) SystemiRhythm Technologies, Inc. · 2021 · 2 generations on3descendants
- K250932DeepRhythmAIMedicalgorithmics S.A. · 2025 · 3 generations on1descendant
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −12 | K882803 | ET HI-Flow Soft Tip/ET HI-Flow/Enhanced Torque ST | Advanced Cardiovascular Systems, Inc. | 1988 | — |
| −11 | K012241 | Cardionet Ambulatory Ecg Monitor with Arrhythmia Detection, Model CN1001 | Cardionet, Inc. | 2002 | — |
| −10 | K052240 | Cardionet Ambulatory Ecg Monitor with Arrhythmia Detection, Model 1002 | Cardionet, Inc. | 2005 | — |
| −9 | K063222 | Cardionet Ambulatory Ecg Monitor with Arrhythmia Detection, Model CN1004 | Cardionet, Inc. | 2006 | — |
| −8 | K072558 | Cardionet Ambulatory Ecg Monitor with Arrhythmia Detection, Model CN1005 | Cardionet, Inc. | 2007 | — |
| −7 | K083287 | Avivo Mobile Patient Management System | Corventis, Inc. | 2009 | — |
| −6 | K090696 | Nuvant Cardiac Event Monitoring System; Nuvant Mobile Cardiac Telemetry System | Corventis, Inc. | 2009 | — |
| −5 | K091971 | Avivo Mobile Patient Management System, Nuvant Mobile Cardiac Telemetry (MCT)… | Corventis, Inc. | 2009 | — |
| −4 | K111917 | Nuvant, Mobile Cardiac Telemetry | Corventis, Inc. | 2011 | — |
| −3 | K113372 | Nuvant, Mobilc Cardiac Telemetry | Corventis, Inc. | 2012 | — |
| −2 | K133701 | Nuvant MCT System | Corventis, Inc. | 2014 | — |
| −1 | K163512 | Zio AT ECG Monitoring System | iRhythm Technologies, Inc. | 2017 | 1 |
| 0 (this device) | K181502 | Zio AT ECG Monitoring System, ZEUS System | iRhythm Technologies, Inc. | 2018 | — |
| +1 | K210822 | DeepRhythmAI | Medicalgorithmics S.A. | 2022 | — |
| +1 | K190593 | Zio XT ECG Monitoring System, Zio AT ECG Monitoring System | iRhythm Technologies, Inc. | 2019 | — |
| +2 | K241197 | DeepRhythmAI | Medicalgorithmics S.A. | 2024 | — |
| +2 | K202527 | Zio ECG Utilization Software (ZEUS) System | iRhythm Technologies, Inc. | 2021 | — |
| +3 | K250932 | DeepRhythmAI | Medicalgorithmics S.A. | 2025 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1988 | 2 | 0 |
| 1992 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 4 | 0 |
| 2002 | 2 | 0 |
| 2004 | 4 | 0 |
| 2005 | 4 | 0 |
| 2006 | 1 | 0 |
| 2007 | 2 | 0 |
| 2008 | 2 | 0 |
| 2009 | 1 | 0 |
| 2010 | 1 | 0 |
| 2011 | 1 | 0 |
| 2012 | 1 | 0 |
| 2013 | 1 | 0 |
| 2014 | 1 | 0 |
| 2015 | 1 | 0 |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 2019 | 1 | 0 |
| 2021 | 1 | 0 |
| 2022 | 2 | 0 |
| 2023 | 1 | 0 |
| 2024 | 2 | 0 |
| 2025 | 3 | 0 |
| 2026 | 2 | 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.
Planning a device in DQK? 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 DQK device
- #1 K213682 HemoSphere Advanced Monitor, HemoSphere…score 26.6 · 28 generations · no Class I recall
- #2 Held for the reportin the report
- #3 Held for the reportin the report
What was it cleared against? (1)
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 |
|---|---|---|---|
| * | K163512 | Zio AT ECG Monitoring SystemSummary page 5…iRhythm Traditional 510(k) Notification 3. PREDICATE DEVICE (ORIGINALLY CLEARED DEVICE) iRhythm Technologies, Inc. Zio AT ECG Monitoring System (K163512) 4. DEVICE DESCRIPTION The ZEUS System was most recently 510(k) cleared under K163512 as part of the Zio AT ECG Monitoring Sy… | 2017 |
What descends from it? (12)
See all 122 later devices cite it directly; ranked here by how many devices descend from each in turn.
Has anything in its family been recalled? (0 Class I)
No FDA recall names this device.
No ancestor or descendant has a Class I recall.
What does this lineage say?
- The line of descent spans 30 years and passes through 4 companies; a new generation was cleared every 1.2 years on median.
- 2 of the 53 ancestors have a recall of any class.
- Of its descendants, K210822 (Medicalgorithmics S.A., 2022) has gone furthest, with 6 descendants of its own.
- 3 other devices also cite its predicate K163512.
How does its category compare?
All DQK devicesDQK Computer, Diagnostic, Programmable: FDA decisions, review times, recalls and adverse event reports over 20 years. 2018, this device’s year, is highlighted.
FDA decisions per year · DQK
23so far in 2026, the most since 2007
2026 to Oct 25, outlined.
Median 510(k) review, days · DQK
95in 2025
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · DQK
1in 2025
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · DQK
433in 2025
MAUDE reports naming product code DQK, 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 | 13 | 83 | 4 | 18 |
| 2008 | 4 | 70 | 1 | 34 |
| 2009 | 12 | 93 | 2 | 40 |
| 2010 | 9 | 64 | 3 | 49 |
| 2011 | 12 | 69 | 2 | 55 |
| 2012 | 7 | 74 | 3 | 129 |
| 2013 | 13 | 68 | 1 | 180 |
| 2014 | 9 | 90 | 4 | 115 |
| 2015 | 7 | 125 | 2 | 131 |
| 2016 | 15 | 190 | 0 | 340 |
| 2017 | 7 | 146 | 2 | 252 |
| 2018 | 14 | 150 | 6 | 261 |
| 2019 | 15 | 113 | 1 | 218 |
| 2020 | 16 | 123 | 1 | 215 |
| 2021 | 16 | 132 | 1 | 351 |
| 2022 | 19 | 136 | 2 | 319 |
| 2023 | 21 | 133 | 2 | 340 |
| 2024 | 13 | 100 | 24 | 557 |
| 2025 | 22 | 95 | 1 | 433 |
| 2026 | 23 | 151 | 2 | — |
What is it indicated for?
The device is intended to capture, analyze and report symptomatic and asymptomatic cardiac events and continuous electrocardiogram information for long-term monitoring. While continuously recording patient ECG, both patient-triggered and automatically-detected arrhythmia events are transmitted to a monitoring center for reporting. After wear, a final report is generated based on the beat-to-beat information from the entire ECG recording. It is indicated…
Read the full statement (127 words)
The device is intended to capture, analyze and report symptomatic and asymptomatic cardiac events and continuous electrocardiogram information for long-term monitoring. While continuously recording patient ECG, both patient-triggered and automatically-detected arrhythmia events are transmitted to a monitoring center for reporting. After wear, a final report is generated based on the beat-to-beat information from the entire ECG recording. It is indicated for use on patients 18 years or older who may be asymptomatic or who may suffer from transient symptoms such as palpitations, shortness of breath, dizziness, light-headedness, pre-syncope, syncope, fatigue, or anxiety and patients who are asymptomatic. The reports are provided for review by the intended user to render a diagnosis based on clinical judgment and experience. It is not intended for use on critical care patients.
Indications for use as stated in the FDA summary.
https://510kreport.com/device/K181502 · printed Nov 6, 2026
Cite this page
510(k) Report. “K181502: Zio AT ECG Monitoring System, ZEUS System.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K181502
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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