# K925789: Debusk Temp. Syst. Esophageal Stethoscope

- Pathway: 510(k) (Traditional)
- Applicant: Deroyal Industries, Inc.
- Decided: Jul 13, 1993 after 239 days
- Product code: BZT (Stethoscope, Esophageal, With Electrical Conductors)
- Device class: 2
- Regulation: 21 CFR 868.1920
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
No predicates in its family tree.
8 later devices descend from it; 2 cite it directly.
0 of 9 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- None. FDA lists a 510(k) statement for it but has not posted the file, so its predicates are not known.

## Most influential descendants
- K051873: Disposable Temperature, Skin and Esophageal Probes (2005), 6 descendants of its own
- K121999: General Purpose Temperature Probe, Skin Temperature Probe (2013), 5 descendants of its own
- K181967: Disposable Temperature Probe (2018), 2 descendants of its own
- K193338: Med-link Reusable Temperature Probes, Med-link Disposable Temperature Probes (2020), 1 descendant of its own
- K182755: Disposable Temperature Probe (2018), 1 descendant of its own

Source page: https://510kreport.com/device/K925789
Methodology: https://510kreport.com/methodology