510(k) · Cleared
ClearedAnsistim
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Dyansys, Inc. · BWK Stimulator, Electro-Acupuncture
Cleared on May 15, 2015 as substantially equivalent to K050123 (Neuroscience Therapy Corp., 2006) after a 374-day review. Its family tree reaches back 3 generations to 1996.
- Decided
- May 15, 2015
- Review
- 374 days
- Class
- Class U
- Product code
- BWK
- Recalls
- None
- Predicates
- 1
Its longest line of descent runs back 3 generations to K954334 (1996). No later device cites it as a predicate yet.
View FIG. 1 as a table
Line of descent and top descendants
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 BWK? 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 BWK device
- #1 K244030 Needle Stimulator (CMNS6-1 PLUS, CMNS6-3)score 10.6 · 6 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 |
|---|---|---|---|
| * | K050123 | P-Stim SystemSummary page 5…:ANSiStimTM Common Name :Electro-acupunture device Classification Name :Electro-acupuncture stimulator Product Code :BWK 2. Predicate Device: K Number: K050123 Model Name: P-Stim Manufacturer: Neuro Science Therapy Corp. 3. Device Description: The ANSiStimTM is a wearable battery-opera… | 2006 |
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 19 years and passes through 3 companies; a new generation was cleared every 6.4 years on median.
- None of the 3 ancestors has a recall.
- 1 other device also cites its predicate K050123.
How does its category compare?
All BWK devicesBWK Stimulator, Electro-Acupuncture: FDA decisions, review times, recalls and adverse event reports over 20 years. 2015, this device’s year, is highlighted.
FDA decisions per year · BWK
1in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · BWK
212in 2014
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · BWK
No recall names BWK since 2007.
Adverse event reports per year · BWK
1in 2024
MAUDE reports naming product code BWK, 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 | 0 | — | 0 | 0 |
| 2008 | 1 | — | 0 | 0 |
| 2009 | 1 | — | 0 | 0 |
| 2010 | 2 | — | 0 | 0 |
| 2011 | 0 | — | 0 | 0 |
| 2012 | 0 | — | 0 | 1 |
| 2013 | 2 | — | 0 | 0 |
| 2014 | 3 | 212 | 0 | 0 |
| 2015 | 1 | — | 0 | 0 |
| 2016 | 1 | — | 0 | 0 |
| 2017 | 1 | — | 0 | 0 |
| 2018 | 0 | — | 0 | 1 |
| 2019 | 0 | — | 0 | 0 |
| 2020 | 0 | — | 0 | 0 |
| 2021 | 2 | — | 0 | 0 |
| 2022 | 1 | — | 0 | 0 |
| 2023 | 0 | — | 0 | 1 |
| 2024 | 0 | — | 0 | 1 |
| 2025 | 1 | — | 0 | 0 |
| 2026 | 1 | — | 0 | — |
What is it indicated for?
The ANSiStim™ is an electro-acupuncture device for use in the practice of acupuncture by qualified practitioners of acupuncture as determined by the states.
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/K141168 · printed Nov 6, 2026
Cite this page
510(k) Report. “K141168: Ansistim.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K141168
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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