# K933233: Ceegraph, Modification

- Pathway: 510(k) (Traditional)
- Applicant: Bio-Logic Systems Corp.
- Decided: Mar 3, 1994 after 316 days
- Product code: GWQ (Full-Montage Standard Electroencephalograph)
- Device class: 2
- Regulation: 21 CFR 882.1400
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
No predicates in its family tree.
13 later devices descend from it; 1 cites it directly.
1 of 14 devices in its family (counting itself) has 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
- K973883: Bio-Logic Ceegraph 128-Channel Recording System (1998), 12 descendants of its own
- K994142: Grass TS3201/6401 Eeg Amplifier System (2000), 6 descendants of its own
- K050425: Aura-PSG (2005), 5 descendants of its own
- K071782: Micromed Brain Spy Plus, Embia Titanium Devices (2008), 4 descendants of its own
- K012079: Geodesic Eeg System, Model 200 (2001), 4 descendants of its own

Source page: https://510kreport.com/device/K933233
Methodology: https://510kreport.com/methodology