# K935456: Regulus Measurement Unit

- Pathway: 510(k) (Traditional)
- Applicant: Compass Intl., Inc.
- Decided: Oct 13, 1995 after 700 days
- Product code: HAW (Neurological Stereotaxic Instrument)
- Device class: 2
- Regulation: 21 CFR 882.4560
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
No predicates in its family tree.
426 later devices descend from it; 2 cite it directly.
2 of 427 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
- K974432: Ultraguide 1000 (1998), 358 descendants of its own
- K023227: USG 2000SA (2002), 280 descendants of its own
- K053610: Abaris (2006), 278 descendants of its own
- K121498: Percunav (2012), 222 descendants of its own
- K132304: Epiq Diagnostic Ultrasound System (2013), 211 descendants of its own

Source page: https://510kreport.com/device/K935456
Methodology: https://510kreport.com/methodology