510(k) · Cleared
ClearedSTN Probe
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Summit Doppler Systems, Inc. · ITX Transducer, Ultrasonic, Diagnostic
Cleared on Aug 19, 2010 as substantially equivalent to K024197 (Summit Doppler Systems, Inc., 2003) after a 50-day review. Its family tree reaches back 3 generations to 1994.
- Decided
- Aug 19, 2010
- Review
- 50 days
- Class
- Class II
- Product code
- ITX
- Recalls
- None
- Predicates
- 1
Its longest line of descent runs back 3 generations to K930200 (1994). No later device cites it as a predicate yet.
- Root · 3 generations backK930200 Multi Dopplex II / Fetal Dopplex IIHuntleigh Healthcare, Inc. · 1994
- 2 generations backK991441 Cadence Doppler Ultrasound SystemMedasonics, Inc. · 1999
- 1 generation backK024197 Lifedop DopplerSummit Doppler Systems, Inc. · 2003 · Recalled
- This deviceK101816 STN ProbeSummit Doppler Systems, Inc. · 2010
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −3 | K930200 | Multi Dopplex II / Fetal Dopplex II | Huntleigh Healthcare, Inc. | 1994 | — |
| −2 | K991441 | Cadence Doppler Ultrasound System | Medasonics, Inc. | 1999 | — |
| −1 | K024197 | Lifedop Doppler | Summit Doppler Systems, Inc. | 2003 | 1 |
| 0 (this device) | K101816 | STN Probe | Summit Doppler Systems, Inc. | 2010 | — |
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 ITX? 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 ITX device
- #1 K260114 Align® Cover and Pad Guidance Toolscore 13.6 · 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 |
|---|---|---|---|
| * | K024197 | Lifedop DopplerSummary page 1…ems Golden, CO LifeDop Doppler Ultrasound System - wI 8.0 MHz CW PV Probe K024197, Cleared 1/3/03 Technologies Summary: Doppler ultrasound technology is the same as substantially equivalent… | 2003 |
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 3 companies; a new generation was cleared every 5.5 years on median.
- 1 of the 3 ancestors has a recall of any class.
- 6 other devices also cite its predicate K024197.
How does its category compare?
All ITX devicesITX Transducer, Ultrasonic, Diagnostic: FDA decisions, review times, recalls and adverse event reports over 20 years. 2010, this device’s year, is highlighted.
FDA decisions per year · ITX
4in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · ITX
126in 2025
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · ITX
2in 2025
Class I (10 since 2007) Class II/III not classified
Adverse event reports per year · ITX
571in 2025
MAUDE reports naming product code ITX, 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 | 10 | 26 | 0 | 16 |
| 2008 | 12 | 73 | 4 | 39 |
| 2009 | 17 | 28 | 4 | 23 |
| 2010 | 10 | 42 | 4 | 30 |
| 2011 | 10 | 16 | 1 | 34 |
| 2012 | 7 | 25 | 1 | 29 |
| 2013 | 3 | 105 | 0 | 38 |
| 2014 | 4 | 41 | 1 | 43 |
| 2015 | 1 | — | 5 | 183 |
| 2016 | 4 | 151 | 0 | 269 |
| 2017 | 6 | 110 | 1 | 412 |
| 2018 | 2 | — | 15 | 130 |
| 2019 | 1 | — | 0 | 119 |
| 2020 | 3 | 120 | 3 | 116 |
| 2021 | 3 | 139 | 10 (10) | 146 |
| 2022 | 2 | — | 6 | 87 |
| 2023 | 6 | 213 | 1 | 138 |
| 2024 | 3 | 81 | 1 | 988 |
| 2025 | 4 | 126 | 2 | 571 |
| 2026 | 6 | 158 | 0 | — |
What is it indicated for?
This product will be used to detect blood flow in veins and arteries for assisting in the detection of peripheral vascular disease.
Indications for use as stated in the FDA summary.
https://510kreport.com/device/K101816 · printed Nov 5, 2026
Cite this page
510(k) Report. “K101816: STN Probe.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 5, 2026. https://510kreport.com/device/K101816
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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