510(k) · Cleared
ClearedSitzmarks
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Konsyl Pharmaceuticals · FFX System, Gastrointestinal Motility (Electrical)
Cleared on Nov 15, 2018 after a 136-day review. FDA’s file for it is a 510(k) statement, which names no predicate. 2 later devices descend from it.
- Decided
- Nov 15, 2018
- Review
- 136 days
- Class
- Class II
- Product code
- FFX
- Recalls
- None
- Predicates
- 0
2 later devices descend from it, 1 citing it directly.
Most influential descendants
Showing 2 of 2 · See allView FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| 0 (this device) | K181750 | Sitzmarks | Konsyl Pharmaceuticals | 2018 | — |
| +1 | K191087 | IntraMarX Radiopaque Markers | Anx Robotica Corp | 2019 | — |
| +2 | K201106 | IntraMarX 3D Radiopaque Marker | Anx Robotica Corp | 2020 | — |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 2019 | 1 | 0 |
| 2020 | 1 | 0 |
Sources: FDA 510(k) database (decision fields), the FDA 510(k) statement (indications), FDA recall and enforcement reports, and MAUDE; processed by 510(k) Report. Verify on FDA.gov · Methodology and accuracy.
Planning a device in FFX? 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 FFX device
- #1 K262621 Rapid Barostat Bag (RBB) Pump and Catheter…score 12.4 · 2 generations · no Class I recall
- #2 Held for the reportin the report
- #3 Held for the reportin the report
What was it cleared against?
FDA’s file for it is a 510(k) statement, which names no predicate.
What descends from it? (2)
1 later device cites it directly; ranked here by how many devices descend from each in turn.
| Number | Device | Decided | Descendants |
|---|---|---|---|
| K191087 | IntraMarX Radiopaque Markers | 2019 | 1 |
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?
- Of its descendants, K191087 (Anx Robotica Corp, 2019) has gone furthest, with 1 descendant of its own.
How does its category compare?
All FFX devicesFFX System, Gastrointestinal Motility (Electrical): FDA decisions, review times, recalls and adverse event reports over 20 years. 2018, this device’s year, is highlighted.
FDA decisions per year · FFX
1in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · FFX
123in 2023
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · FFX
2so far in 2026, the most since 2007
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · FFX
32in 2025
MAUDE reports naming product code FFX, 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 | 2 | — | 0 | 0 |
| 2008 | 1 | — | 0 | 0 |
| 2009 | 2 | — | 1 | 2 |
| 2010 | 2 | — | 0 | 6 |
| 2011 | 0 | — | 1 | 6 |
| 2012 | 4 | 120 | 0 | 4 |
| 2013 | 1 | — | 0 | 4 |
| 2014 | 0 | — | 0 | 4 |
| 2015 | 0 | — | 0 | 10 |
| 2016 | 3 | 145 | 0 | 15 |
| 2017 | 2 | — | 0 | 10 |
| 2018 | 1 | — | 0 | 17 |
| 2019 | 4 | 240 | 0 | 27 |
| 2020 | 1 | — | 0 | 20 |
| 2021 | 0 | — | 0 | 26 |
| 2022 | 0 | — | 0 | 31 |
| 2023 | 3 | 123 | 0 | 51 |
| 2024 | 1 | — | 0 | 59 |
| 2025 | 1 | — | 0 | 32 |
| 2026 | 1 | — | 2 | — |
What is it indicated for?
SITZMARKS capsule is a diagnostic test indicated for aiding in the evaluation of colonic motility in patients with severe constipation, as diagnosed by your healthcare professional, but otherwise negative GI evaluations. SITZMARKS capsule, for use in adult and pediatric patients (at least 2 years old), is to be dispensed only by physicians to patients for oral intake.
Indications for use as stated in the FDA 510(k) statement.
https://510kreport.com/device/K181750 · printed Nov 6, 2026
Cite this page
510(k) Report. “K181750: Sitzmarks.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K181750
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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