510(k) · Cleared
ClearedSOZO Pro
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
ImpediMed Limited · DSB Plethysmograph, Impedance
Cleared on Oct 17, 2023 as substantially equivalent to K203473 (ImpediMed Limited, 2021) after a 96-day review. Its family tree reaches back 9 generations to 1992. 2 later devices descend from it.
- Decided
- Oct 17, 2023
- Review
- 96 days
- Class
- Class II
- Product code
- DSB
- Recalls
- None
- Predicates
- 1
Its longest line of descent runs back 9 generations to K922218 (1992). 10 ancestors in all. 2 later devices descend from it, 2 citing it directly.
- Root · 9 generations backK922218 IQ SystemRenaissance Technology, Inc. · 1992
- 5 generations between
- 3 generations backK172507 SOZOImpediMed Limited · 2017
- 2 generations backK193410 SOZO Body Fluid AnalyzerImpediMed Limited · 2020
- 1 generation backK203473 SOZOImpediMed Limited · 2021
- This deviceK232089 SOZO ProImpediMed Limited · 2023
- Descendant · cites it directly · 0 of its ownK260224 MySOZO Software version 6.1.0.1 (SW version 6.1.0.1)ImpediMed Limited · 2026
- Descendant · cites it directly · 0 of its ownK253224 MySOZO Software version 6.0.1.2 (SW version 6.0.1.2)ImpediMed Limited · 2026
Show all 9 generations
- Root · 9 generations backK922218 IQ SystemRenaissance Technology, Inc. · 1992
- 8 generations backK042113 Zoe Fluid Status MonitorNoninvasive Medical Technologies, LLC · 2004
- 7 generations backK112830 Zoefluid Status Monitor (Model Zoe 2B)Noninvasive Medical Technologies, Inc. · 2012
- 6 generations backK131509 Zoe Fluid Status MonitorNoninvasive Medical Technologies, Inc. · 2013
- 5 generations backK133301 Zoe Fluid Status MonitorNoninvasive Medical Technologies, Inc. · 2014
- 4 generations backK142503 Imed-Z Fluid Status MonitorIntersection Medical, Inc. · 2015
- 3 generations backK172507 SOZOImpediMed Limited · 2017
- 2 generations backK193410 SOZO Body Fluid AnalyzerImpediMed Limited · 2020
- 1 generation backK203473 SOZOImpediMed Limited · 2021
- This deviceK232089 SOZO ProImpediMed Limited · 2023
Most influential descendants
Showing 2 of 2 · See allView FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −9 | K922218 | IQ System | Renaissance Technology, Inc. | 1992 | — |
| −8 | K042113 | Zoe Fluid Status Monitor | Noninvasive Medical Technologies, LLC | 2004 | — |
| −7 | K112830 | Zoefluid Status Monitor (Model Zoe 2B) | Noninvasive Medical Technologies, Inc. | 2012 | — |
| −6 | K131509 | Zoe Fluid Status Monitor | Noninvasive Medical Technologies, Inc. | 2013 | — |
| −5 | K133301 | Zoe Fluid Status Monitor | Noninvasive Medical Technologies, Inc. | 2014 | — |
| −4 | K142503 | Imed-Z Fluid Status Monitor | Intersection Medical, Inc. | 2015 | — |
| −3 | K172507 | SOZO | ImpediMed Limited | 2017 | — |
| −2 | K193410 | SOZO Body Fluid Analyzer | ImpediMed Limited | 2020 | — |
| −1 | K203473 | SOZO | ImpediMed Limited | 2021 | — |
| 0 (this device) | K232089 | SOZO Pro | ImpediMed Limited | 2023 | — |
| +1 | K260224 | MySOZO Software version 6.1.0.1 (SW version 6.1.0.1) | ImpediMed Limited | 2026 | — |
| +1 | K253224 | MySOZO Software version 6.0.1.2 (SW version 6.0.1.2) | ImpediMed Limited | 2026 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1999 | 1 | 0 |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 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 DSB? 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 DSB device
- #1 K260224 MySOZO Software version 6.1.0.1 (SW version…score 14.6 · 10 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 |
|---|---|---|---|
| * | K203473 | SOZOSummary page 6…aph Regulatory Class II Product Code: DSB (Cardiac Electrophysiology, Diagnostics and Monitoring) Predicate Device: SOZO® (K203473) Reference Device #1: SOZO Pro (K230530) Reference Device #2: SOZO Pro (K230531) Reference Device #3:… | 2021 |
| † | K230530 | SOZO Pro | 2023 |
| † | K230531 | SOZO Pro | 2023 |
| † | K211585 | Bodyport Cardiac Scale | 2022 |
What descends from it? (2)
2 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 31 years and passes through 5 companies; a new generation was cleared every 2.5 years on median.
- None of the 10 ancestors has a recall.
- Of its descendants, K260224 (ImpediMed Limited, 2026) has gone furthest, with 0 descendants of its own.
How does its category compare?
All DSB devicesDSB Plethysmograph, Impedance: FDA decisions, review times, recalls and adverse event reports over 20 years. 2023, this device’s year, is highlighted.
FDA decisions per year · DSB
3in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · DSB
266in 2025
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · DSB
1in 2015
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · DSB
2in 2025
MAUDE reports naming product code DSB, 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 | 2 | — | 0 | 0 |
| 2008 | 6 | 90 | 0 | 0 |
| 2009 | 2 | — | 0 | 0 |
| 2010 | 1 | — | 0 | 0 |
| 2011 | 2 | — | 0 | 0 |
| 2012 | 1 | — | 0 | 0 |
| 2013 | 2 | — | 0 | 0 |
| 2014 | 2 | — | 0 | 0 |
| 2015 | 2 | — | 1 | 0 |
| 2016 | 0 | — | 0 | 1 |
| 2017 | 2 | — | 0 | 0 |
| 2018 | 1 | — | 0 | 0 |
| 2019 | 1 | — | 0 | 0 |
| 2020 | 2 | — | 0 | 0 |
| 2021 | 1 | — | 0 | 0 |
| 2022 | 1 | — | 0 | 0 |
| 2023 | 2 | — | 0 | 0 |
| 2024 | 0 | — | 0 | 0 |
| 2025 | 3 | 266 | 0 | 2 |
| 2026 | 1 | — | 0 | — |
What is it indicated for?
The SOZO Pro has the following uses: For adult human patients at risk of lymphedema: A bioimpedance spectroscopy device for use on adult human patients, utilizing impedance ratios that are displayed as an L-Dex ratio that supports the measurement of extracel lular volume differences between the limbs and is presented to the clinician on an L-Dex scale as an aid to their clinical as sessment of lym phedema. The use ofthe device to obtain an L-Dex score is…
Read the full statement (346 words)
The SOZO Pro has the following uses:
For adult human patients at risk of lymphedema:
A bioimpedance spectroscopy device for use on adult human patients, utilizing impedance ratios that are displayed as an L-Dex ratio that supports the measurement of extracel lular volume differences between the limbs and is presented to the clinician on an L-Dex scale as an aid to their clinical as sessment of lym phedema.
The use ofthe device to obtain an L-Dex score is only indicated for patients who will have or who have had lymph nodes, from the axillary and/or pelvic regions, either removed, damaged or iradiated.
The SOZO Pro is intended for adult patients living with heart failure.
This device is intended for use, under the direction of a physician, for the noninvasive monitoring of patients with fluid managem ent problems suffering from heart failure. Data from the device should be considered in conjunction with other clinical data.
The SOZO Pro may be used as an adjunct to existing methods by aiding clinicians who are using Subj ective Global Assessment (SGA) tools to assess patients at risk of protein-calorie malnutrition (PCM).
The SOZO Pro may be further used to estimate the following body composition parameters in humans to track clinically relevant body composition parameters over time:
* Fat mass
* Fat-free mass
* Total body water
* Intracellular fluid
* Extracellular fluid
¢ Skeletal muscle mass
The following outputs are also presented:
* Body Mass Index (BMI)
* Basal metabolic rate (BMR; based on Mifflin — St. Jeor’s algorithm ) dis played in calories per day
* Protein and mineral (also known as ‘dry lean mass’) represents the content of a body that is not fat or fluid; cal culated by subtracting total body water weight from fat-free mass weight.
The SOZO Pro device measures current (I), voltage (V) and phase angle (Phi), and from these values calculates resistance (R), reactance (Xc¢), and impedance (Z), which are used to estimate the above body composition parameters. The device/ software will also display the Cole plot, subject height, weight, age and sex.
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/K232089 · printed Nov 5, 2026
Cite this page
510(k) Report. “K232089: SOZO Pro.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 5, 2026. https://510kreport.com/device/K232089
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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