510(k) · Cleared
ClearedBT-200V Vascular Doppler
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Bistos Co., Ltd. · HGM System, Monitoring, Perinatal
Cleared on Aug 2, 2012 as substantially equivalent to K050601 (Koven Technology, Inc., 2005) after a 98-day review. Its family tree reaches back 2 generations to 1996.
- Decided
- Aug 2, 2012
- Review
- 98 days
- Class
- Class II
- Product code
- HGM
- Recalls
- None
- Predicates
- 1
Its longest line of descent runs back 2 generations to K954397 (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 HGM? 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 HGM device
- #1 K241882 Fetal & Maternal Monitor (F15A, F15A Air)score 19.5 · 33 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 |
|---|---|---|---|
| * | K050601 | Smartdop 45 Vascular DopplerSummary page 1…W Subsequent Product Code IT X Classification panel : Cardiovascular, Radiology 4. Substantial Equivalence. K050601 Koven Technology Corp model Smartdop 45 Vascular doppler Bistos BT-200V Vascular Doppler is substantia… | 2005 |
| † | K100885 | Fetal Monitor Model: BT-200T | 2010 |
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 16 years and passes through 2 companies; a new generation was cleared every 9.0 years on median.
- 1 of the 2 ancestors has a recall of any class.
- 1 other device also cites its predicate K050601.
How does its category compare?
All HGM devicesHGM System, Monitoring, Perinatal: FDA decisions, review times, recalls and adverse event reports over 20 years. 2012, this device’s year, is highlighted.
FDA decisions per year · HGM
4in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · HGM
269in 2025
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · HGM
5in 2019
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · HGM
99in 2025
MAUDE reports naming product code HGM, 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 | 3 | 56 | 0 | 35 |
| 2008 | 4 | 75 | 4 | 17 |
| 2009 | 4 | 66 | 6 | 42 |
| 2010 | 4 | 193 | 0 | 64 |
| 2011 | 13 | 141 | 0 | 83 |
| 2012 | 4 | 107 | 0 | 44 |
| 2013 | 2 | — | 1 | 16 |
| 2014 | 4 | 231 | 1 | 30 |
| 2015 | 5 | 169 | 0 | 44 |
| 2016 | 1 | — | 0 | 17 |
| 2017 | 3 | 138 | 0 | 27 |
| 2018 | 3 | 258 | 0 | 30 |
| 2019 | 0 | — | 5 | 41 |
| 2020 | 1 | — | 0 | 19 |
| 2021 | 0 | — | 0 | 71 |
| 2022 | 1 | — | 0 | 87 |
| 2023 | 2 | — | 0 | 69 |
| 2024 | 1 | — | 0 | 174 |
| 2025 | 4 | 269 | 0 | 99 |
| 2026 | 2 | — | 2 | — |
What is it indicated for?
The BT-200V Vascular Doppler ( Brand ui-dop) detects arterial and venous blood flow in extremities as well as fetal heart sounds. and displays velocity waveform, numerical data and fetal heart rate with heart beat indicator.
The BT-200V selection is 2, 4, 5 and 8 M4Hz.
Indications for use as stated in the FDA summary.
https://510kreport.com/device/K121267 · printed Nov 6, 2026
Cite this page
510(k) Report. “K121267: BT-200V Vascular Doppler.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K121267
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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