510(k) · Cleared
ClearedHP Viridia CMS Patient Monitor with Eeg Parameter, Model M1027A
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Hewlett-Packard GmbH · MHX Monitor, Physiological, Patient (With Arrhythmia Detection Or Alarms)
Cleared on Nov 8, 1999 as substantially equivalent to K990125 (Hewlett-Packard GmbH, 1999) and 3 other predicates after a 90-day review. Its family tree reaches back 4 generations to 1994. 409 later devices descend from it.
- Decided
- Nov 8, 1999
- Review
- 90 days
- Class
- Class II
- Product code
- MHX
- Recalls
- None
- Predicates
- 4
Its longest line of descent runs back 4 generations to K941811 (1994). 11 ancestors in all, the oldest K914571 (1992). 409 later devices descend from it, 2 citing it directly.
- Root · 4 generations backK941811 HP M1175A, M1176A, Component Monitoring SystemHewlett-Packard Co. · 1994
- 3 generations backK960934 HP M1205A Omnicare Component Monitor System Model 24Hewlett-Packard Co. · 1996
- 2 generations backK981376 Hewlett-Packard M1205A Viridia 24 CTHewlett-Packard Co. · 1999
- 1 generation backK990125 HP Viridia Component Monitoring System, Model Rev. KHewlett-Packard GmbH · 1999
- This deviceK992674 HP Viridia CMS Patient Monitor with Eeg Parameter, Model M1027AHewlett-Packard GmbH · 1999
- Descendant · cites it directly · 407 of its ownK021778 Philips Component Compact Monitor, Release a.04, Model #M1275BPhilips Medical Systems · 2002
- Descendant · 2 generations on · 406 of its ownK023871 M3046A (M2/M3/M4) Compact Portable Patient Monitor and MP60 & MP70…Philips Medical Systems · 2002
- Descendant · 2 generations on · 404 of its ownK030038 Philips MP60, MP70 and MP90 Intellivue Patient Monitors with Portal…Philips Medical Systems, Inc. · 2003
- Descendant · 2 generations on · 376 of its ownK031481 The Philips Intellivue MP60, MP70, and MP90 Patient Monitors…Philips Medizin Systeme Boblingen GmbH · 2003
- Descendant · 2 generations on · 375 of its ownK032858 The Philips Intellivue MP40, MP50, MP60, MP70,and MP90 Patient…Philips Medizin Systeme Boblingen GmbH · 2003
Showing 5 of 409 descendants. See all descendants
Descendants cleared per year
Most influential descendants
Showing 5 of 409 · See all- K021778Philips Component Compact Monitor, Release a.04, Model #M1275BPhilips Medical Systems · 2002 · cites it directly407descendants
- K023871M3046A (M2/M3/M4) Compact Portable Patient Monitor and MP60 & MP70 Intellivue Patient…Philips Medical Systems · 2002 · 2 generations on406descendants
- K030038Philips MP60, MP70 and MP90 Intellivue Patient Monitors with Portal Technology and M3185…Philips Medical Systems, Inc. · 2003 · 2 generations on404descendants
- K031481The Philips Intellivue MP60, MP70, and MP90 Patient Monitors, Release a.20Philips Medizin Systeme Boblingen GmbH · 2003 · 2 generations on376descendants
- K032858The Philips Intellivue MP40, MP50, MP60, MP70,and MP90 Patient Monitors, Release B.O.Philips Medizin Systeme Boblingen GmbH · 2003 · 2 generations on375descendants
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −4 | K941811 | HP M1175A, M1176A, Component Monitoring System | Hewlett-Packard Co. | 1994 | — |
| −3 | K960934 | HP M1205A Omnicare Component Monitor System Model 24 | Hewlett-Packard Co. | 1996 | — |
| −2 | K981376 | Hewlett-Packard M1205A Viridia 24 CT | Hewlett-Packard Co. | 1999 | — |
| −1 | K990125 | HP Viridia Component Monitoring System, Model Rev. K | Hewlett-Packard GmbH | 1999 | — |
| 0 (this device) | K992674 | HP Viridia CMS Patient Monitor with Eeg Parameter, Model M1027A | Hewlett-Packard GmbH | 1999 | — |
| +1 | K021778 | Philips Component Compact Monitor, Release a.04, Model #M1275B | Philips Medical Systems | 2002 | — |
| +2 | K023871 | M3046A (M2/M3/M4) Compact Portable Patient Monitor and MP60 & MP70 Intellivue… | Philips Medical Systems | 2002 | — |
| +2 | K030038 | Philips MP60, MP70 and MP90 Intellivue Patient Monitors with Portal Technology… | Philips Medical Systems, Inc. | 2003 | — |
| +2 | K031481 | The Philips Intellivue MP60, MP70, and MP90 Patient Monitors, Release a.20 | Philips Medizin Systeme Boblingen GmbH | 2003 | — |
| +2 | K032858 | The Philips Intellivue MP40, MP50, MP60, MP70,and MP90 Patient Monitors… | Philips Medizin Systeme Boblingen GmbH | 2003 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1992 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 2001 | 1 | 0 |
| 2002 | 2 | 0 |
| 2003 | 4 | 0 |
| 2004 | 9 | 0 |
| 2005 | 9 | 0 |
| 2006 | 14 | 0 |
| 2007 | 6 | 0 |
| 2008 | 14 | 0 |
| 2009 | 15 | 0 |
| 2010 | 20 | 0 |
| 2011 | 19 | 0 |
| 2012 | 19 | 0 |
| 2013 | 17 | 0 |
| 2014 | 14 | 0 |
| 2015 | 14 | 0 |
| 2016 | 16 | 0 |
| 2017 | 17 | 0 |
| 2018 | 25 | 0 |
| 2019 | 17 | 0 |
| 2020 | 14 | 0 |
| 2021 | 18 | 0 |
| 2022 | 28 | 0 |
| 2023 | 26 | 0 |
| 2024 | 24 | 0 |
| 2025 | 28 | 0 |
| 2026 | 19 | 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 MHX? 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 MHX device
- #1 K251702 IntelliVue Patient Monitor MX750; IntelliVue…score 23.0 · 40 generations · no Class I recall
- #2 Held for the reportin the report
- #3 Held for the reportin the report
What was it cleared against? (4)
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 |
|---|---|---|---|
| * | K990125 | HP Viridia Component Monitoring System, Model Rev. KSummary page 1…Regulation Classification Name Number 882.1400 Electroencephalograph 3. The new device is substantially equivalent to previously cleared HP devices marketed pursuant to K990125, and K922974, and to the Telefactor Neurotrac-II K914571, and to the Spacelab EEG module 90481, K932842. 4. The modification is… | 1999 |
| * | K922974 | Portable Patient MonitorSummary page 1…assification Name Number 882.1400 Electroencephalograph 3. The new device is substantially equivalent to previously cleared HP devices marketed pursuant to K990125, and K922974, and to the Telefactor Neurotrac-II K914571, and to the Spacelab EEG module 90481, K932842. 4. The modification is the addition… | 1992 |
| * | K914571 | Neurotrac IISummary page 1…ephalograph 3. The new device is substantially equivalent to previously cleared HP devices marketed pursuant to K990125, and K922974, and to the Telefactor Neurotrac-II K914571, and to the Spacelab EEG module 90481, K932842. 4. The modification is the addition of new applications software and firmware th… | 1992 |
| * | K932842 | Spacelabs Medical Model 90481 Eeg ModuleSummary page 1…equivalent to previously cleared HP devices marketed pursuant to K990125, and K922974, and to the Telefactor Neurotrac-II K914571, and to the Spacelab EEG module 90481, K932842. 4. The modification is the addition of new applications software and firmware that involves the addition of the M1027A EEG Modu… | 1994 |
What descends from it? (409)
See all 4092 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 5 years and passes through 2 companies; a new generation was cleared every 2.1 years on median.
- None of the 11 ancestors has a recall.
- Of its descendants, K021778 (Philips Medical Systems, 2002) has gone furthest, with 407 descendants of its own.
- 7 other devices also cite its predicate K990125.
How does its category compare?
All MHX devicesMHX Monitor, Physiological, Patient (With Arrhythmia Detection Or Alarms): FDA decisions, review times, recalls and adverse event reports over 20 years.
FDA decisions per year · MHX
8in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · MHX
192in 2025
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · MHX
21so far in 2026, the most since 2007
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · MHX
3,761in 2025
MAUDE reports naming product code MHX, 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 | 15 | 96 | 3 | 131 |
| 2008 | 16 | 58 | 2 | 232 |
| 2009 | 13 | 57 | 7 | 382 |
| 2010 | 20 | 90 | 13 | 955 |
| 2011 | 12 | 81 | 16 | 949 |
| 2012 | 16 | 88 | 11 | 676 |
| 2013 | 21 | 120 | 14 | 1,997 |
| 2014 | 13 | 248 | 6 | 1,609 |
| 2015 | 14 | 203 | 5 | 1,284 |
| 2016 | 13 | 149 | 7 | 1,105 |
| 2017 | 14 | 134 | 6 | 1,115 |
| 2018 | 11 | 203 | 12 | 2,157 |
| 2019 | 7 | 243 | 6 | 1,462 |
| 2020 | 11 | 196 | 0 | 1,714 |
| 2021 | 5 | 195 | 0 | 2,423 |
| 2022 | 15 | 189 | 6 | 1,470 |
| 2023 | 8 | 229 | 3 | 2,254 |
| 2024 | 5 | 181 | 3 | 2,814 |
| 2025 | 8 | 192 | 15 | 3,761 |
| 2026 | 14 | 205 | 21 | — |
What is it indicated for?
The Hewlett-Packard Viridia CMS Patient Monitoring System, Rel.K, with M1027A EEG Measurement Module is intended for measurement and display of the electroencephalogram of adults, pediatrics, and neonates in the Operating Room and intermediate/critical care environments.
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/K992674 · printed Nov 4, 2026
Cite this page
510(k) Report. “K992674: HP Viridia CMS Patient Monitor with Eeg Parameter, Model M1027A.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 4, 2026. https://510kreport.com/device/K992674
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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