# K041604: Macro-Micro Depth Electrode

- Pathway: 510(k) (Abbreviated)
- Applicant: Ad-Tech Medical Instrument Corp
- Decided: Aug 16, 2004 after 63 days
- Product code: GZL (Electrode, Depth)
- Device class: 2
- Regulation: 21 CFR 882.1330
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 4 generations back to K811452 (1981). 9 ancestors in all.
12 later devices descend from it; 2 cite it directly.
0 of 22 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K891920: AD-Tech's Depth Electrode, Ad-Tech Medical Instrument Corp (1989) Summary page 1.
- K964644: AD-Tech's Depth Electrode, Ad-Tech Medical Instrument Corp (1997) Summary page 1.
- K033173: Micro Targeting Electrode, FHC, Inc. (2004) Summary page 1.

## Most influential descendants
- K053358: Depth Electrode, Foramen Ovale Depth Electrodes, Wyler Sphenoidal Depth Electrodes (2006), 11 descendants of its own
- K170959: DIXI Medical Microdeep Depth Electrode (2017), 5 descendants of its own
- K163355: Depth Electrodes, Foramen Ovale Depth Eletrodes, Marco-Micro Depth Electrodes, Spencer Probe Depth Electrodes (2017), 5 descendants of its own
- K211367: Evo sEEG System (2021), 2 descendants of its own
- K213170: SENSOSEEG Depth Electrodes (2023), 1 descendant of its own

## Indications for use
The Macro-Micro Depth Electrodes are intended for use with recording, monitoring and stimulation equipment for the recording, monitoring and stimulation of electrical signals at the subsurface level of the brain.

Source page: https://510kreport.com/device/K041604
Methodology: https://510kreport.com/methodology