# K970418: PMT Accessory Depthalon Electrode Anchor Bolt (2103-23-XX)

- Pathway: 510(k) (Traditional)
- Applicant: Pmt Corp.
- Decided: Apr 29, 1997 after 84 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: 1 generation back to K802151 (1980). 1 ancestor in all.
2 later devices descend from it; 1 cites it directly.
0 of 4 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K802151: PMT Depthalon Depth Corticography Elec, Progress Mankind Technology (1980). Our OCR of the scanned summary read “K802151” beside “510(k)”; FDA’s K802151 is the only number that fits it and carries the summary’s name for the device. Summary page 2.

## Most influential descendants
- K181544: Anchor Bolt (as an accessory to Depth Electrodes) (2018), 1 descendant of its own
- K223276: Anchor Bolts as Accessories to Depth Electrodes (2023), 0 descendants of its own

## Indications for use
The PMT Depth Electrode Anchor Bolt is an accessory used in cases where it’s necessary to minimize concerns about potential cerebrospinal fluid (CSF) leakage and infection of the subdural space while stabilizing the electrode during intraoperative electroclincal characterization.

Source page: https://510kreport.com/device/K970418
Methodology: https://510kreport.com/methodology