510(k) · Cleared
ClearedCSF-4 (CSF-4)
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Cardiacsense · DPS Electrocardiograph
Cleared on May 2, 2024 as substantially equivalent to K221260 (Cardiacsense, 2023) and 1 other predicate after a 262-day review. Its family tree reaches back 21 generations to 1997. 1 of the 127 devices in its family, counting itself, has a Class I recall.
- Decided
- May 2, 2024
- Review
- 262 days
- Class
- Class II
- Product code
- DPS
- Recalls
- None
- Predicates
- 2
Its longest line of descent runs back 21 generations to K962603 (1997). 126 ancestors in all, the oldest K853990 (1985). No later device cites it as a predicate yet. 1 of the 127 devices in this family, counting this one, has a Class I recall.
- Root · 21 generations backK962603 Masimo Set MS-1 Pulse Oximeter & the Lnop Series of Sensors & CablesMasimo Corp. · 1997
- 17 generations between
- 3 generations backK150314 Masimo MightySat Rx Fingertip Pulse OximeterMasimo Corporation · 2015
- 2 generations backK181956 Masimo MightySat Rx Fingertip Pulse OximeterMasimo Corporation · 2019
- 1 generation backK181352 Loop SystemSpry Health, Inc. · 2019
- This deviceK232445 CSF-4 (CSF-4)Cardiacsense · 2024
Show all 21 generations
- Root · 21 generations backK962603 Masimo Set MS-1 Pulse Oximeter & the Lnop Series of Sensors & CablesMasimo Corp. · 1997
- 20 generations backK973887 Masimo Set MS-1P Pulse Oximeter and the Lnop Series of Sensors and…Masimo Corp. · 1998
- 19 generations backK982255 Model 2000 Pulse OximeterIvy Biomedical Systems, Inc. · 1998
- 18 generations backK991823 N-395 Pulse Oximeter, Model N-395Nellcor Puritan Bennett, Inc. · 1999
- 17 generations backK012891 Oximax Pulse Oximetry System with N-595 Pulse Oximeter and Oximax…Nellcor Puritan Bennett, Inc. · 2002 · Recalled
- 16 generations backK021090 Oximax N-550 Pulse Oximeter,Model N-550 Pulse OximeterNellcor Puritan Bennett, Inc. · 2002
- 15 generations backK033048 Cas 740 Series Monitor, Models 740-1, 740M-1, 740-2MS, 740M-2MS…Cas Medical Systems, Inc. · 2004 · Recalled
- 14 generations backK050844 750C Series Monitor, Models 750C-2MS, 750CM-2MS, 750C-NNL…Cas Medical Systems, Inc. · 2005
- 13 generations backK060065 CAPNOSTREAM20 Two Parameter Bedside Monitor & CAPNOSTREAM10 One…Oridion Capnography, Inc. · 2006 · Recalled
- 12 generations backK072295 Capnostream 20 with A2 Adaptive Averaging SoftwareOridion Capnography, Inc. · 2007
- 11 generations backK082268 CAPNOSTREAM20 with Integrated Pulmonary IndexOridion Capnography, Inc. · 2009 · Recalled
- 10 generations backK091241 Masimo Rainbow Set Radical 7 Pulse CO-Oximeter; Rad 87 Pulse…Masimo Corporation · 2009
- 9 generations backK100428 Masimo Rainbow Set Radical 7R Pulse CO-OximeterMasimo Corporation · 2010
- 8 generations backK110516 Connex Vital Signs Monitor 6000 SeriesWelch Allyn, Inc. · 2011
- 7 generations backK112687 Connex (R) Vital Signs Monitor 6000 SeriesWelch Allyn, Inc. · 2011
- 6 generations backK121013 Connex Vital Signs Monitor 6000 SeriesWelch Allyn, Inc. · 2012
- 5 generations backK140188 Masimo Root Monitoring SystemMasimo Corporation · 2014
- 4 generations backK142394 Masimo Root Monitoring System and AccesoriesMasimo Corporation · 2014
- 3 generations backK150314 Masimo MightySat Rx Fingertip Pulse OximeterMasimo Corporation · 2015
- 2 generations backK181956 Masimo MightySat Rx Fingertip Pulse OximeterMasimo Corporation · 2019
- 1 generation backK181352 Loop SystemSpry Health, Inc. · 2019
- This deviceK232445 CSF-4 (CSF-4)Cardiacsense · 2024
Class I recalls in this family
- K970209 Capnocheck Plus9 generations back · 1997
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −21 | K962603 | Masimo Set MS-1 Pulse Oximeter & the Lnop Series of Sensors & Cables | Masimo Corp. | 1997 | — |
| −20 | K973887 | Masimo Set MS-1P Pulse Oximeter and the Lnop Series of Sensors and Cables | Masimo Corp. | 1998 | — |
| −19 | K982255 | Model 2000 Pulse Oximeter | Ivy Biomedical Systems, Inc. | 1998 | — |
| −18 | K991823 | N-395 Pulse Oximeter, Model N-395 | Nellcor Puritan Bennett, Inc. | 1999 | — |
| −17 | K012891 | Oximax Pulse Oximetry System with N-595 Pulse Oximeter and Oximax Sensors and… | Nellcor Puritan Bennett, Inc. | 2002 | 1 |
| −16 | K021090 | Oximax N-550 Pulse Oximeter,Model N-550 Pulse Oximeter | Nellcor Puritan Bennett, Inc. | 2002 | — |
| −15 | K033048 | Cas 740 Series Monitor, Models 740-1, 740M-1, 740-2MS, 740M-2MS, 740-2NL… | Cas Medical Systems, Inc. | 2004 | 1 |
| −14 | K050844 | 750C Series Monitor, Models 750C-2MS, 750CM-2MS, 750C-NNL, 750CM-2NL… | Cas Medical Systems, Inc. | 2005 | — |
| −13 | K060065 | CAPNOSTREAM20 Two Parameter Bedside Monitor & CAPNOSTREAM10 One Parameter… | Oridion Capnography, Inc. | 2006 | 3 |
| −12 | K072295 | Capnostream 20 with A2 Adaptive Averaging Software | Oridion Capnography, Inc. | 2007 | — |
| −11 | K082268 | CAPNOSTREAM20 with Integrated Pulmonary Index | Oridion Capnography, Inc. | 2009 | 9 |
| −10 | K091241 | Masimo Rainbow Set Radical 7 Pulse CO-Oximeter; Rad 87 Pulse CO-Oximeter | Masimo Corporation | 2009 | — |
| −9 | K100428 | Masimo Rainbow Set Radical 7R Pulse CO-Oximeter | Masimo Corporation | 2010 | — |
| −8 | K110516 | Connex Vital Signs Monitor 6000 Series | Welch Allyn, Inc. | 2011 | — |
| −7 | K112687 | Connex (R) Vital Signs Monitor 6000 Series | Welch Allyn, Inc. | 2011 | — |
| −6 | K121013 | Connex Vital Signs Monitor 6000 Series | Welch Allyn, Inc. | 2012 | — |
| −5 | K140188 | Masimo Root Monitoring System | Masimo Corporation | 2014 | — |
| −4 | K142394 | Masimo Root Monitoring System and Accesories | Masimo Corporation | 2014 | — |
| −3 | K150314 | Masimo MightySat Rx Fingertip Pulse Oximeter | Masimo Corporation | 2015 | — |
| −2 | K181956 | Masimo MightySat Rx Fingertip Pulse Oximeter | Masimo Corporation | 2019 | — |
| −1 | K181352 | Loop System | Spry Health, Inc. | 2019 | — |
| 0 (this device) | K232445 | CSF-4 (CSF-4) | Cardiacsense | 2024 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 4 | 0 |
| 1993 | 1 | 0 |
| 1995 | 5 | 0 |
| 1996 | 3 | 0 |
| 1997 | 6 | 1 |
| 1998 | 6 | 0 |
| 1999 | 4 | 0 |
| 2000 | 9 | 0 |
| 2001 | 3 | 0 |
| 2002 | 9 | 0 |
| 2003 | 5 | 0 |
| 2004 | 7 | 0 |
| 2005 | 9 | 0 |
| 2006 | 6 | 0 |
| 2008 | 2 | 0 |
| 2009 | 1 | 0 |
| 2010 | 3 | 0 |
| 2011 | 2 | 0 |
| 2012 | 2 | 0 |
| 2013 | 2 | 0 |
| 2014 | 3 | 0 |
| 2015 | 1 | 0 |
| 2021 | 1 | 0 |
| 2023 | 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.
1 device in this family has a Class I recall. 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 DPS device
- #1 K212112 Cardiologs Holter Platformscore 18.6 · 5 generations · no Class I recall
- #2 Held for the reportin the report
- #3 Held for the reportin 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 |
|---|---|---|---|
| * | K221260 | CSF-3Summary page 5…stantially equivalent to the following predicate and reference devices: 510(k) Number Predicate Device Name / Manufacturer Primary Predicate K221260 CSF- 3 / CardiacSense ✓ K181352 Loop System / Spry Health, I… | 2023 |
| * | K181352 | Loop SystemSummary page 5…Predicate Device Name / Manufacturer Primary Predicate K221260 CSF- 3 / CardiacSense ✓ K181352 Loop System / Spry Health, Inc. The predicate devices have not been subject to a design related recall. DEVICE DESCR… | 2019 |
What descends from it?
No later submission names this one as a predicate yet.
Has anything in its family been recalled? (1 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.
- K970209Capnocheck PlusBci Intl., Inc. · 1997 · 9 generations back · ◆ in the 1997 ancestors bar of FIG. 11 Class I recall
What does this lineage say?
- The line of descent spans 27 years and passes through 9 companies; a new generation was cleared every 11 months on median.
- 20 of the 126 ancestors have a recall of any class; 1 has a Class I recall.
How does its category compare?
All DPS devicesDPS Electrocardiograph: FDA decisions, review times, recalls and adverse event reports over 20 years. 2024, this device’s year, is highlighted.
FDA decisions per year · DPS
6in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · DPS
163in 2025
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · DPS
3in 2025
Class I (1 since 2007) Class II/III not classified
Adverse event reports per year · DPS
55in 2025
MAUDE reports naming product code DPS, 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 | 11 | 87 | 2 | 9 |
| 2008 | 13 | 31 | 0 | 17 |
| 2009 | 14 | 84 | 1 | 14 |
| 2010 | 11 | 104 | 2 | 21 |
| 2011 | 22 | 154 | 1 | 121 |
| 2012 | 12 | 117 | 0 | 56 |
| 2013 | 10 | 134 | 0 | 15 |
| 2014 | 11 | 253 | 0 | 15 |
| 2015 | 8 | 178 | 0 | 30 |
| 2016 | 11 | 229 | 0 | 12 |
| 2017 | 9 | 177 | 0 | 15 |
| 2018 | 14 | 221 | 0 | 19 |
| 2019 | 3 | 178 | 9 | 27 |
| 2020 | 6 | 224 | 2 | 59 |
| 2021 | 5 | 135 | 1 | 24 |
| 2022 | 6 | 244 | 1 | 59 |
| 2023 | 10 | 236 | 3 | 54 |
| 2024 | 8 | 260 | 4 (1) | 64 |
| 2025 | 6 | 163 | 3 | 55 |
| 2026 | 6 | 258 | 4 | — |
What is it indicated for?
The CSF-4 is intended to record, store, transfer, and display single-channel electrocardiogram (ECG) rhythms. The ECG signal is for quality checks of the data and for manual interpretation of heart rate. The CSF-4 also measures, records and displays pulse rate. The CSF-4 is also indicated for use in measuring and displaying functional oxygen saturation of arterial hemoglobin (SpO2). The CSF-4 is for adult patients and health-conscious individuals in…
Read the full statement (122 words)
The CSF-4 is intended to record, store, transfer, and display single-channel electrocardiogram (ECG) rhythms. The ECG signal is for quality checks of the data and for manual interpretation of heart rate. The CSF-4 also measures, records and displays pulse rate.
The CSF-4 is also indicated for use in measuring and displaying functional oxygen saturation of arterial hemoglobin (SpO2). The CSF-4 is for adult patients and health-conscious individuals in hospitals, clinics, long-term care facilities, and homes. The CSF-4 is a prescription device and should be used under the care of a physician. CSF-4 does not provide any alarms. It is not intended for pediatric use or use in critical care settings. The device is not intended to provide outputs during periods of motion.
Indications for use as stated in the FDA summary.
https://510kreport.com/device/K232445 · printed Nov 5, 2026
Cite this page
510(k) Report. “K232445: CSF-4 (CSF-4).” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 5, 2026. https://510kreport.com/device/K232445
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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