# K920575: Merkur 4000

- Pathway: 510(k) (Traditional)
- Applicant: F.M. Wiest USA, Inc.
- Decided: Jul 23, 1992 after 167 days
- Product code: FAP (Cystometric Gas (Carbon-Dioxide) On Hydraulic Device)
- Device class: 2
- Regulation: 21 CFR 876.1620
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
No predicates in its family tree.
2 later devices descend from it; 2 cite it directly.
0 of 3 devices in its family (counting itself) have a Class I recall.

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

## Most influential descendants
- K970595: Circon Endotek OM-4 H2O Cystometry Pump (1997), 0 descendants of its own
- K964522: Ellipse 4 (1997), 0 descendants of its own

Source page: https://510kreport.com/device/K920575
Methodology: https://510kreport.com/methodology