510(k) · Cleared
ClearedRusch Blakemore Tube - 4 Lumen (Minnesota Type)
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Rusch Intl. · KNT Tubes, Gastrointestinal (And Accessories)
Cleared on May 18, 1998 as substantially equivalent to K832672 (Inmed Corp., 1983) after a 216-day review. Its family tree reaches back 1 generation to 1983.
- Decided
- May 18, 1998
- Review
- 216 days
- Class
- Class II
- Product code
- KNT
- Recalls
- None
- Predicates
- 1
Its longest line of descent runs back 1 generation to K832672 (1983). No later device cites it as a predicate yet.
- Root · 1 generation backK832672 Four Lumen Blakemore TubeInmed Corp. · 1983
- This deviceK973892 Rusch Blakemore Tube - 4 Lumen (Minnesota Type)Rusch Intl. · 1998
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −1 | K832672 | Four Lumen Blakemore Tube | Inmed Corp. | 1983 | — |
| 0 (this device) | K973892 | Rusch Blakemore Tube - 4 Lumen (Minnesota Type) | Rusch Intl. | 1998 | — |
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 KNT? 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 KNT device
- #1 K261890 52Fr ViSiGi LUX™; 52Fr ViSiGi 3D®score 12.7 · 4 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 |
|---|---|---|---|
| * | K832672 | Four Lumen Blakemore TubeSummary page 1…ter claims equivalence. The Risch Blakemore Tube - 4 Lumen (Minnesota Type), sterile is substantially equivalent to the Riisch Ultra Blakemore Tube - 4 Lumen, sterile - K832672. Description of the Device. The Riilsch Blakemore Tube - 4 Lumen (Minnesota Type), sterile consists of a radiopaque (BasSO,) so… | 1983 |
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.
How does its category compare?
All KNT devicesKNT Tubes, Gastrointestinal (And Accessories): FDA decisions, review times, recalls and adverse event reports over 20 years.
FDA decisions per year · KNT
4in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · KNT
136in 2025
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · KNT
13in 2025
Class I (1 since 2007) Class II/III not classified
Adverse event reports per year · KNT
1,451in 2025
MAUDE reports naming product code KNT, 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 | 118 | 1 | 300 |
| 2008 | 10 | 115 | 82 | 867 |
| 2009 | 11 | 102 | 9 | 818 |
| 2010 | 12 | 104 | 3 | 517 |
| 2011 | 7 | 211 | 2 | 531 |
| 2012 | 12 | 107 | 1 | 528 |
| 2013 | 7 | 128 | 0 | 747 |
| 2014 | 16 | 259 | 0 | 1,030 |
| 2015 | 10 | 140 | 1 | 1,048 |
| 2016 | 6 | 99 | 3 | 1,251 |
| 2017 | 9 | 247 | 4 | 1,672 |
| 2018 | 7 | 149 | 2 | 1,901 |
| 2019 | 10 | 126 | 2 | 1,838 |
| 2020 | 5 | 102 | 1 | 1,641 |
| 2021 | 6 | 121 | 2 | 1,655 |
| 2022 | 7 | 110 | 1 (1) | 1,650 |
| 2023 | 5 | 162 | 2 | 1,863 |
| 2024 | 9 | 103 | 0 | 1,344 |
| 2025 | 4 | 136 | 13 | 1,451 |
| 2026 | 3 | 105 | 20 | — |
What is it indicated for?
The Rüsch Blakemore Tube - 4 Lumen (Minnesota Type), sterile
is a single use, sterile, naso-gastric double balloon tube
that can be passed nasally into the stomach suitable for use
in the management of bleeding esophageal varices.
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/K973892 · printed Nov 5, 2026
Cite this page
510(k) Report. “K973892: Rusch Blakemore Tube - 4 Lumen (Minnesota Type).” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 5, 2026. https://510kreport.com/device/K973892
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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