# K904019: Quantum 2000 Angiodynograph Ultrasound System

- Pathway: 510(k) (Traditional)
- Applicant: Quantum Medical Systems, Inc.
- Decided: Mar 22, 1991 after 204 days
- Product code: IYO (System, Imaging, Pulsed Echo, Ultrasonic)
- Device class: 2
- Regulation: 21 CFR 892.1560
- 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; 1 cites 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
- K950157: Siemens Q64XXX (1996), 1 descendant of its own
- K981626: Sonoline Elegra Diagnostic Ultrasound System (1998), 0 descendants of its own

Source page: https://510kreport.com/device/K904019
Methodology: https://510kreport.com/methodology