510(k) · Cleared
ClearedBrain Anesthesia Response Monitor (Bar Monitor)
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Cortical Dynamics, Ltd. · OLW Index-Generating Electroencephalograph Software
Cleared on Sep 1, 2023 as substantially equivalent to K072286 (Aspect Medical Systems, Inc., 2007) after a 701-day review. Its family tree reaches back 9 generations to 1996.
- Decided
- Sep 1, 2023
- Review
- 701 days
- Class
- Class II
- Product code
- OLW
- Recalls
- None
- Predicates
- 1
Its longest line of descent runs back 9 generations to K963644 (1996). 14 ancestors in all, the oldest K923043 (1992). No later device cites it as a predicate yet.
- Root · 9 generations backK963644 A-1000 Eeg Monitor and a-1050 Eeg MonitorAspect Medical Systems, Inc. · 1996
- 5 generations between
- 3 generations backK052362 Bis Eeg Monitor, Model a-3000Aspect Medical Systems, Inc. · 2005
- 2 generations backK062613 Bis Eeg Monitor ViewAspect Medical Systems, Inc. · 2007
- 1 generation backK072286 Bis Eeg Vista Monitor System and BisxAspect Medical Systems, Inc. · 2007 · Recalled
- This deviceK213273 Brain Anesthesia Response Monitor (Bar Monitor)Cortical Dynamics, Ltd. · 2023
Show all 9 generations
- Root · 9 generations backK963644 A-1000 Eeg Monitor and a-1050 Eeg MonitorAspect Medical Systems, Inc. · 1996
- 8 generations backK974496 A-2000 Eeg Monitor with BisAspect Medical Systems, Inc. · 1998
- 7 generations backK012466 Bis/Eeg ModuleGeneral Electric Medical Systems Information Techn · 2001
- 6 generations backK031694 Modification to Eeg Monitor with Bis, Model a-2000Aspect Medical Systems, Inc. · 2003
- 5 generations backK030267 Eeg Monitor with Bis, Model a-2000Aspect Medical Systems, Inc. · 2004
- 4 generations backK040183 BISXAspect Medical Systems, Inc. · 2004
- 3 generations backK052362 Bis Eeg Monitor, Model a-3000Aspect Medical Systems, Inc. · 2005
- 2 generations backK062613 Bis Eeg Monitor ViewAspect Medical Systems, Inc. · 2007
- 1 generation backK072286 Bis Eeg Vista Monitor System and BisxAspect Medical Systems, Inc. · 2007 · Recalled
- This deviceK213273 Brain Anesthesia Response Monitor (Bar Monitor)Cortical Dynamics, Ltd. · 2023
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −9 | K963644 | A-1000 Eeg Monitor and a-1050 Eeg Monitor | Aspect Medical Systems, Inc. | 1996 | — |
| −8 | K974496 | A-2000 Eeg Monitor with Bis | Aspect Medical Systems, Inc. | 1998 | — |
| −7 | K012466 | Bis/Eeg Module | General Electric Medical Systems Information Techn | 2001 | — |
| −6 | K031694 | Modification to Eeg Monitor with Bis, Model a-2000 | Aspect Medical Systems, Inc. | 2003 | — |
| −5 | K030267 | Eeg Monitor with Bis, Model a-2000 | Aspect Medical Systems, Inc. | 2004 | — |
| −4 | K040183 | BISX | Aspect Medical Systems, Inc. | 2004 | — |
| −3 | K052362 | Bis Eeg Monitor, Model a-3000 | Aspect Medical Systems, Inc. | 2005 | — |
| −2 | K062613 | Bis Eeg Monitor View | Aspect Medical Systems, Inc. | 2007 | — |
| −1 | K072286 | Bis Eeg Vista Monitor System and Bisx | Aspect Medical Systems, Inc. | 2007 | 1 |
| 0 (this device) | K213273 | Brain Anesthesia Response Monitor (Bar Monitor) | Cortical Dynamics, Ltd. | 2023 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1992 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2005 | 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.
Planning a device in OLW? 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 OLW device
- #1 K260880 SedLine Sedation Monitorscore 17.0 · 19 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 |
|---|---|---|---|
| * | K072286 | Bis Eeg Vista Monitor System and BisxSummary page 4…Product Code(s): OLW, OMC, GXY Classification Class II Classification Neurology Panel Predicate Device K072286 - BIS EEG VISTA MONITOR SYSTEM Device Description The Brain Anaesthesia Response Monitor (BARM) is a device designed to non-inv… | 2007 |
What descends from it?
No later submission names this one as a predicate yet.
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 27 years and passes through 3 companies; a new generation was cleared every 1.5 years on median.
- 1 of the 14 ancestors has a recall of any class.
- 4 other devices also cite its predicate K072286.
How does its category compare?
All OLW devicesOLW Index-Generating Electroencephalograph Software: FDA decisions, review times, recalls and adverse event reports over 20 years. 2023, this device’s year, is highlighted.
FDA decisions per year · OLW
1in 2024
2026 to Oct 25, outlined.
Median 510(k) review, days · OLW
105in 2007
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · OLW
No recall names OLW since 2007.
Adverse event reports per year · OLW
73in 2025
MAUDE reports naming product code OLW, 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 | 3 | 105 | 0 | 0 |
| 2008 | 2 | — | 0 | 0 |
| 2009 | 0 | — | 0 | 0 |
| 2010 | 0 | — | 0 | 0 |
| 2011 | 0 | — | 0 | 0 |
| 2012 | 0 | — | 0 | 0 |
| 2013 | 0 | — | 0 | 0 |
| 2014 | 0 | — | 0 | 0 |
| 2015 | 1 | — | 0 | 0 |
| 2016 | 0 | — | 0 | 0 |
| 2017 | 0 | — | 0 | 3 |
| 2018 | 1 | — | 0 | 3 |
| 2019 | 0 | — | 0 | 6 |
| 2020 | 0 | — | 0 | 15 |
| 2021 | 1 | — | 0 | 15 |
| 2022 | 1 | — | 0 | 27 |
| 2023 | 1 | — | 0 | 18 |
| 2024 | 1 | — | 0 | 93 |
| 2025 | 0 | — | 0 | 73 |
| 2026 | 2 | — | 0 | — |
What is it indicated for?
The BAR Monitor is intended to monitor the state of the brain by real-time data acquisition and processing of EEG signals. The system displays a patient's EEG and Composite Cortical State (CCS), a proprietary computed EEG index related to the effect of certain anesthetic or hypnotic agents. Anesthetic agents include inhalation agents and propofol in combination with opioids.
The BAR Monitor is intended to assist medical professionals monitor adult patients (22 to 65 years of age) in the operating room (OR) and clinical research laboratory.
Indications for use as stated in the FDA summary.
https://510kreport.com/device/K213273 · printed Nov 6, 2026
Cite this page
510(k) Report. “K213273: Brain Anesthesia Response Monitor (Bar Monitor).” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K213273
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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