510(k) · Cleared
ClearedPulse Oximeter
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Nonin Medical, Inc. · DQA Oximeter
Cleared on Jul 7, 2014 as substantially equivalent to K131021 (Nonin Medical, Inc., 2013) after a 98-day review. Its family tree reaches back 9 generations to 1991.
- Decided
- Jul 7, 2014
- Review
- 98 days
- Class
- Class II
- Product code
- DQA
- Recalls
- None
- Predicates
- 1
Its longest line of descent runs back 9 generations to K910772 (1991). 20 ancestors in all, the oldest K893221 (1990). No later device cites it as a predicate yet.
- Root · 9 generations backK910772 Propaq 102, 104 and 106Protocol Systems, Inc. · 1991
- 5 generations between
- 3 generations backK043359 4100 Patient Oximeter ModuleNonin Medical, Inc. · 2005
- 2 generations backK081285 Finger Pulse Oximeter, Model 9560Nonin Medical, Inc. · 2008
- 1 generation backK131021 Pulse OximeterNonin Medical, Inc. · 2013
- This deviceK140785 Pulse OximeterNonin Medical, Inc. · 2014
Show all 9 generations
- Root · 9 generations backK910772 Propaq 102, 104 and 106Protocol Systems, Inc. · 1991
- 8 generations backK972020 Oscillomate Non-Invasive Blood Pressure MonitorCas Medical Systems, Inc. · 1998
- 7 generations backK980879 Oscillomate Nibp / SP02 Ems MonitorCas Medical Systems, Inc. · 1998
- 6 generations backK982776 9303 Neonatal/Adult Vital Signs MonitorCas Medical Systems, Inc. · 1998
- 5 generations backK013319 Nonin Model 2120 Pulse Oximeter and Noninvasive Blood Pressure…Nonin Medical, Inc. · 2002
- 4 generations backK041156 Avant Digital Pulse Oximetry System, Models 4000, 4001Nonin Medical, Inc. · 2004 · Recalled
- 3 generations backK043359 4100 Patient Oximeter ModuleNonin Medical, Inc. · 2005
- 2 generations backK081285 Finger Pulse Oximeter, Model 9560Nonin Medical, Inc. · 2008
- 1 generation backK131021 Pulse OximeterNonin Medical, Inc. · 2013
- This deviceK140785 Pulse OximeterNonin Medical, Inc. · 2014
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −9 | K910772 | Propaq 102, 104 and 106 | Protocol Systems, Inc. | 1991 | — |
| −8 | K972020 | Oscillomate Non-Invasive Blood Pressure Monitor | Cas Medical Systems, Inc. | 1998 | — |
| −7 | K980879 | Oscillomate Nibp / SP02 Ems Monitor | Cas Medical Systems, Inc. | 1998 | — |
| −6 | K982776 | 9303 Neonatal/Adult Vital Signs Monitor | Cas Medical Systems, Inc. | 1998 | — |
| −5 | K013319 | Nonin Model 2120 Pulse Oximeter and Noninvasive Blood Pressure (Nibp) Monitor | Nonin Medical, Inc. | 2002 | — |
| −4 | K041156 | Avant Digital Pulse Oximetry System, Models 4000, 4001 | Nonin Medical, Inc. | 2004 | 1 |
| −3 | K043359 | 4100 Patient Oximeter Module | Nonin Medical, Inc. | 2005 | — |
| −2 | K081285 | Finger Pulse Oximeter, Model 9560 | Nonin Medical, Inc. | 2008 | — |
| −1 | K131021 | Pulse Oximeter | Nonin Medical, Inc. | 2013 | — |
| 0 (this device) | K140785 | Pulse Oximeter | Nonin Medical, Inc. | 2014 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1990 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1995 | 1 | 0 |
| 1997 | 2 | 0 |
| 2000 | 2 | 0 |
| 2005 | 1 | 0 |
| 2006 | 1 | 0 |
| 2012 | 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 DQA? 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 DQA device
- #1 K221282 Empatica Health Monitoring Platformscore 20.1 · 38 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 |
|---|---|---|---|
| * | K131021 | Pulse OximeterSummary page 1…'s Model 3231 finger pulse oximeter is substantially equivalent to the- Model 3230 Finger Pulse oximeter cleared by the FDA under K131021 on 9/11/20 13. Indications for Use: Model 3231… | 2013 |
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 23 years and passes through 3 companies; a new generation was cleared every 2.4 years on median.
- 2 of the 20 ancestors have a recall of any class.
- 1 other device also cites its predicate K131021.
How does its category compare?
All DQA devicesDQA Oximeter: FDA decisions, review times, recalls and adverse event reports over 20 years. 2014, this device’s year, is highlighted.
FDA decisions per year · DQA
15in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · DQA
182in 2025
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · DQA
3in 2024
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · DQA
399in 2025
MAUDE reports naming product code DQA, 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 | 20 | 122 | 6 | 325 |
| 2008 | 22 | 97 | 5 | 312 |
| 2009 | 35 | 117 | 29 | 281 |
| 2010 | 29 | 127 | 4 | 185 |
| 2011 | 15 | 195 | 1 | 164 |
| 2012 | 14 | 120 | 0 | 322 |
| 2013 | 15 | 182 | 0 | 468 |
| 2014 | 11 | 175 | 2 | 1,124 |
| 2015 | 13 | 158 | 1 | 2,082 |
| 2016 | 14 | 246 | 0 | 1,775 |
| 2017 | 9 | 200 | 0 | 1,190 |
| 2018 | 18 | 260 | 32 | 694 |
| 2019 | 19 | 158 | 0 | 548 |
| 2020 | 15 | 126 | 0 | 426 |
| 2021 | 10 | 174 | 0 | 553 |
| 2022 | 20 | 265 | 0 | 478 |
| 2023 | 13 | 317 | 0 | 392 |
| 2024 | 14 | 285 | 3 | 545 |
| 2025 | 15 | 182 | 0 | 399 |
| 2026 | 8 | 187 | 0 | — |
What is it indicated for?
The NaninO Model 3231 Finger Pulse Oximeter isa small, lightweight, portable device indicated for use in measuring and displaying functional oxygen saturation of arterial hemoglobin (%SpO2) and pulse rate of patients who are well or poorly perfused. It is intended for spot-checking of adult and pediatric patients with digits between 0.8 -2.5 cm (0.3 -1.0 inch) thick.
Indications for use as stated in the FDA summary.
https://510kreport.com/device/K140785 · printed Nov 4, 2026
Cite this page
510(k) Report. “K140785: Pulse Oximeter.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 4, 2026. https://510kreport.com/device/K140785
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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