510(k) · Cleared
ClearedNeck Care Therapy, Model: AST-905A, AST-905D, AST-905H
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Shenzhen Osto Technology Company Limited · NUH Stimulator, Nerve, Transcutaneous, Over-The-Counter
Cleared on Jun 11, 2021 as substantially equivalent to K172897 (Shenzhen Osto Technology Co., Ltd., 2018) and 1 other predicate after an 88-day review. Its family tree reaches back 8 generations to 1994. 1 later device descends from it.
- Decided
- Jun 11, 2021
- Review
- 88 days
- Class
- Class II
- Product code
- NUH
- Recalls
- None
- Predicates
- 2
Its longest line of descent runs back 8 generations to K940301 (1994). 17 ancestors in all. 1 later device descends from it, 1 citing it directly.
- Root · 8 generations backK940301 Compex 2Biodex Medical Systems, Inc. · 1994
- 7 generations backK011880 Compex SportCompex S.A. · 2002
- 6 generations backK060846 Therapeutic Massage CompanionEndurance Therapeutics · 2007
- 5 generations backK102598 HI-Dow-XPHi-Dow International, Inc. · 2011
- 4 generations backK121757 HealthmateforeverHealthmate International, LLC · 2012
- 3 generations backK141978 Maxpower ReliefOmron Healthcare, Inc. · 2014
- 2 generations backK160115 Heat Pain ProOmron Healthcare, Inc. · 2016
- 1 generation backK190783 Health Expert Electronic Stimulator (model: AST-300L)Shenzhen Osto Technology Company Limited · 2020
- This deviceK210756 Neck Care Therapy, Model: AST-905A, AST-905D, AST-905HShenzhen Osto Technology Company Limited · 2021
- Descendant · cites it directly · 0 of its ownK221092 Transcutaneous Electrical Nerve Stimulator Model: ST-304Shenzhen Future Electronic Co., Ltd. · 2022
Most influential descendants
Showing 1 of 1 · See all- K221092Transcutaneous Electrical Nerve Stimulator Model: ST-304Shenzhen Future Electronic Co., Ltd. · 2022 · cites it directly0descendants
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −8 | K940301 | Compex 2 | Biodex Medical Systems, Inc. | 1994 | — |
| −7 | K011880 | Compex Sport | Compex S.A. | 2002 | — |
| −6 | K060846 | Therapeutic Massage Companion | Endurance Therapeutics | 2007 | — |
| −5 | K102598 | HI-Dow-XP | Hi-Dow International, Inc. | 2011 | — |
| −4 | K121757 | Healthmateforever | Healthmate International, LLC | 2012 | — |
| −3 | K141978 | Maxpower Relief | Omron Healthcare, Inc. | 2014 | — |
| −2 | K160115 | Heat Pain Pro | Omron Healthcare, Inc. | 2016 | — |
| −1 | K190783 | Health Expert Electronic Stimulator (model: AST-300L) | Shenzhen Osto Technology Company Limited | 2020 | — |
| 0 (this device) | K210756 | Neck Care Therapy, Model: AST-905A, AST-905D, AST-905H | Shenzhen Osto Technology Company Limited | 2021 | — |
| +1 | K221092 | Transcutaneous Electrical Nerve Stimulator Model: ST-304 | Shenzhen Future Electronic Co., Ltd. | 2022 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 2004 | 2 | 0 |
| 2005 | 1 | 0 |
| 2011 | 1 | 0 |
| 2012 | 1 | 0 |
| 2013 | 2 | 0 |
| 2014 | 1 | 0 |
| 2018 | 1 | 0 |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 2022 | 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.
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? (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 |
|---|---|---|---|
| * | K172897 | Neck Care Therapy, Model: SYK 509BSummary page 4…in relief, Review Panel: Neurology Product Code: NUH Regulation Number: 882.5890 Regulation Class: II 3. Predicate Device Information Predicate Device 1: 510(K) Number: K172897 Company Name: Shenzhen OSTO Technology Co., Ltd. Address: No.43 Longfeng Road, Xinsheng Community, Longgang Street Longgang Distr… | 2018 |
| * | K190783 | Health Expert Electronic Stimulator (model: AST-300L)Summary page 4…Care Therapy, Models: SYK-509B Common Name: Electronic Stimulator Regulation Number: 882.5890 Regulatory Class: II Product Code: NUH Predicate Device 2: 510(K) Number: K190783 Company Name: Shenzhen OSTO Technology Company Limited Address: No.43 Longfeng Road, Xinsheng Community, Longgang Street, Longgan… | 2020 |
What descends from it? (1)
1 later device cites it directly; ranked here by how many devices descend from each in turn.
| Number | Device | Decided | Descendants |
|---|---|---|---|
| K221092 | Transcutaneous Electrical Nerve Stimulator Model: ST-304 | 2022 | 0 |
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 27 years and passes through 7 companies; a new generation was cleared every 3.4 years on median.
- None of the 17 ancestors has a recall.
- Of its descendants, K221092 (Shenzhen Future Electronic Co., Ltd., 2022) has gone furthest, with 0 descendants of its own.
- 2 other devices also cite its predicate K172897.
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. 2021, 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?
To be used for temporary relief of pain associated with sore and aching muscles in the shoulder, waist, back of neck, back, arm, and leg, due to strain from exercise or normal household and work activities.
- Neck Pad is used on back of neck.
- Meridian Pad is used on shoulder, waist, back, arm and leg.
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/K210756 · printed Nov 6, 2026
Cite this page
510(k) Report. “K210756: Neck Care Therapy, Model: AST-905A, AST-905D, AST-905H.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K210756
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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