510(k) · Cleared
ClearedNelson Water Systems for Hemodialysis
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Nelson Environmental Technologies, Inc. · FIP Subsystem, Water Purification
Cleared on May 25, 2000 as substantially equivalent to K964539 (Zyzatech Water Systems, Inc., 1997) after a 192-day review. Its family tree reaches back 1 generation to 1997.
- Decided
- May 25, 2000
- Review
- 192 days
- Class
- Class II
- Product code
- FIP
- Recalls
- None
- Predicates
- 1
Its longest line of descent runs back 1 generation to K964539 (1997). No later device cites it as a predicate yet.
- Root · 1 generation backK964539 Portable Series Reverse Osmosis Systems 700, 701, 702, 703, 704…Zyzatech Water Systems, Inc. · 1997
- This deviceK993877 Nelson Water Systems for HemodialysisNelson Environmental Technologies, Inc. · 2000
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −1 | K964539 | Portable Series Reverse Osmosis Systems 700, 701, 702, 703, 704, 750, Mre-NF… | Zyzatech Water Systems, Inc. | 1997 | — |
| 0 (this device) | K993877 | Nelson Water Systems for Hemodialysis | Nelson Environmental Technologies, Inc. | 2000 | — |
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 FIP? 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 FIP device
- #1 K251851 DIASAFEplusUS (F00013010)score 14.1 · 14 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 |
|---|---|---|---|
| * | K964539 | Portable Series Reverse Osmosis Systems 700, 701, 702, 703, 704, 750, Mre-NF, F800-F802…Summary page 1…Classification Name: Water Purification System for Hemodialysis 3. Substantial Equivalence: Zyzatech Water Systems, Inc. Water Treatment System for Hemodialysis 510(k)#K964539 4. Device Description: The water purification system is a complete system accepting the influent facility water and providing p… | 1997 |
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?
- Its one ancestor has no recall.
- 7 other devices also cite its predicate K964539.
How does its category compare?
All FIP devicesFIP Subsystem, Water Purification: FDA decisions, review times, recalls and adverse event reports over 20 years.
FDA decisions per year · FIP
4in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · FIP
88in 2025
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · FIP
1in 2020
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · FIP
77in 2025
MAUDE reports naming product code FIP, 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 | 1 | — | 0 | 1 |
| 2008 | 3 | 202 | 0 | 5 |
| 2009 | 3 | 167 | 0 | 0 |
| 2010 | 2 | — | 0 | 12 |
| 2011 | 4 | 116 | 0 | 4 |
| 2012 | 2 | — | 0 | 4 |
| 2013 | 4 | 125 | 0 | 41 |
| 2014 | 4 | 126 | 0 | 34 |
| 2015 | 2 | — | 0 | 12 |
| 2016 | 2 | — | 0 | 3 |
| 2017 | 1 | — | 0 | 6 |
| 2018 | 1 | — | 0 | 3 |
| 2019 | 2 | — | 0 | 13 |
| 2020 | 1 | — | 1 | 12 |
| 2021 | 1 | — | 0 | 35 |
| 2022 | 1 | — | 0 | 57 |
| 2023 | 3 | 69 | 0 | 140 |
| 2024 | 1 | — | 0 | 174 |
| 2025 | 4 | 88 | 0 | 77 |
| 2026 | 0 | — | 0 | — |
What is it indicated for?
Nelson Water Systems' Water Purification for Hemodialysis is intended to be used for purifying the water used in hemodialysis treatment. It removes organic, inorganic, and microbial contaminants from the water.
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/K993877 · printed Nov 4, 2026
Cite this page
510(k) Report. “K993877: Nelson Water Systems for Hemodialysis.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 4, 2026. https://510kreport.com/device/K993877
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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