510(k) · Cleared
ClearedDisposable Esophageal Stethoscope
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Catheter Research, Inc. · BZT Stethoscope, Esophageal, With Electrical Conductors
Cleared on Mar 19, 1998 after a 162-day review. FDA’s file for it is a 510(k) statement, which names no predicate.
- Decided
- Mar 19, 1998
- Review
- 162 days
- Class
- Class II
- Product code
- BZT
- Recalls
- None
- Predicates
- 0
FDA’s file for it is a 510(k) statement, which names no predicate.
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 BZT? 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 BZT device
- #1 K251025 Mon-a-Therm™ Esophageal Stethoscope with…score 10.6 · 1 generation · no Class I recall
- #2 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?
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.
How does its category compare?
All BZT devicesBZT Stethoscope, Esophageal, With Electrical Conductors: FDA decisions, review times, recalls and adverse event reports over 20 years.
FDA decisions per year · BZT
1in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · BZT
Too few BZT 510(k)s in any year since 2007 to give a median.
Recalls per year · BZT
3so far in 2026, the most since 2007
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · BZT
3in 2024
MAUDE reports naming product code BZT, 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 | 1 | — | 0 | 0 |
| 2008 | 0 | — | 0 | 4 |
| 2009 | 1 | — | 0 | 1 |
| 2010 | 0 | — | 0 | 0 |
| 2011 | 0 | — | 1 | 2 |
| 2012 | 1 | — | 0 | 0 |
| 2013 | 0 | — | 0 | 2 |
| 2014 | 1 | — | 0 | 1 |
| 2015 | 0 | — | 0 | 2 |
| 2016 | 0 | — | 0 | 0 |
| 2017 | 0 | — | 0 | 2 |
| 2018 | 0 | — | 0 | 1 |
| 2019 | 0 | — | 0 | 3 |
| 2020 | 1 | — | 0 | 0 |
| 2021 | 0 | — | 0 | 3 |
| 2022 | 0 | — | 0 | 1 |
| 2023 | 0 | — | 0 | 0 |
| 2024 | 0 | — | 0 | 3 |
| 2025 | 1 | — | 0 | 0 |
| 2026 | 0 | — | 3 | — |
What is it indicated for?
Esophageal Stethoscope: Monitoring heart and breath sounds.
Esophageal Stethoscope with Electrical Conductors:
Monitoring heart and breath sounds, and core temperature.
Indications for use read by OCR from a scanned FDA 510(k) statement, so letters may be misread. Check the PDF before quoting it.
https://510kreport.com/device/K973839 · printed Nov 5, 2026
Cite this page
510(k) Report. “K973839: Disposable Esophageal Stethoscope.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 5, 2026. https://510kreport.com/device/K973839
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Record history
- FDA decision record loaded May 2, 2026
- Summary read Oct 13, 2026 (extraction version 9eaa42aa01ed)
- Page last updated Nov 3, 2026