510(k) · Cleared
ClearedMuscle Stimulator
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Shenzhen Yiran Intelligent Co., Ltd. · NUH Stimulator, Nerve, Transcutaneous, Over-The-Counter
Cleared on Mar 1, 2024 as substantially equivalent to K143268 (Shenzhen As-Tec Technology Co., Ltd., 2015) after a 270-day review. Its family tree reaches back 1 generation to 2015.
- Decided
- Mar 1, 2024
- Review
- 270 days
- Class
- Class II
- Product code
- NUH
- Recalls
- None
- Predicates
- 1
Its longest line of descent runs back 1 generation to K143268 (2015). No later device cites it as a predicate yet.
- Root · 1 generation backK143268 Tens and Powered Muscle StimulatorShenzhen As-Tec Technology Co., Ltd. · 2015
- This deviceK231648 Muscle StimulatorShenzhen Yiran Intelligent Co., Ltd. · 2024
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −1 | K143268 | Tens and Powered Muscle Stimulator | Shenzhen As-Tec Technology Co., Ltd. | 2015 | — |
| 0 (this device) | K231648 | Muscle Stimulator | Shenzhen Yiran Intelligent Co., Ltd. | 2024 | — |
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 NUH? 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 NUH device
- #1 K190783 Health Expert Electronic Stimulator (model…score 15.8 · 7 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 |
|---|---|---|---|
| * | K143268 | Tens and Powered Muscle StimulatorSummary page 4…roduct Code: NUH, NGX Classification Panel: Physical Medicine Device Class: II Predicate Device 510(k) number: K143268 Trade Name: TENS AND POWERED MUSCLE STIMULATOR Common Name: Stimulator, Nerve,… | 2015 |
| † | K121719 | SM Tens & PMS | 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?
- Its one ancestor has no recall.
- 2 other devices also cite its predicate K143268.
How does its category compare?
All NUH devicesNUH Stimulator, Nerve, Transcutaneous, Over-The-Counter: FDA decisions, review times, recalls and adverse event reports over 20 years. 2024, this device’s year, is highlighted.
FDA decisions per year · NUH
15in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · NUH
119in 2025
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · NUH
No recall names NUH since 2007.
Adverse event reports per year · NUH
7in 2025
MAUDE reports naming product code NUH, 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 | 4 | 161 | 0 | 0 |
| 2008 | 0 | — | 0 | 0 |
| 2009 | 1 | — | 0 | 0 |
| 2010 | 3 | 148 | 0 | 0 |
| 2011 | 6 | 231 | 0 | 0 |
| 2012 | 6 | 170 | 0 | 0 |
| 2013 | 10 | 189 | 0 | 1 |
| 2014 | 16 | 212 | 0 | 9 |
| 2015 | 14 | 198 | 0 | 11 |
| 2016 | 13 | 145 | 0 | 13 |
| 2017 | 17 | 155 | 0 | 21 |
| 2018 | 16 | 121 | 0 | 18 |
| 2019 | 19 | 213 | 0 | 5 |
| 2020 | 14 | 147 | 0 | 8 |
| 2021 | 14 | 198 | 0 | 7 |
| 2022 | 20 | 103 | 0 | 2 |
| 2023 | 15 | 127 | 0 | 4 |
| 2024 | 20 | 90 | 0 | 7 |
| 2025 | 15 | 119 | 0 | 7 |
| 2026 | 5 | 137 | 0 | — |
What is it indicated for?
TENS(Transcutaneous Electric Nerve Stimulation):
To be used for temporary relief of pain associated with sore and aching muscles in the shoulder, waist, back, upper extremities (arm), and lower extremities (leg) due to strain from exercise or normal household work activities.
PMS(Powered Muscle Stimulation):
It is intended to be used to stimulate healthy muscles in order to improve and facilitate muscle performance.
Indications for use as stated in the FDA summary.
https://510kreport.com/device/K231648 · printed Nov 6, 2026
Cite this page
510(k) Report. “K231648: Muscle Stimulator.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K231648
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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