510(k) Report

FDA product code · Neurology

Electrode, Depth

GZLClass II21 CFR 882.1330510(k) required58 decisions since 198018 recalls

58 FDA decisions since 1980. 510(k) reviews decided 2021–2025 took a median of 206 days (half between 105 and 265). 18 recalls name this code, 0 of them Class I. The most-cited predicate is K991077, named by 4 later devices.

Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly, last Nov 3, 2026 Download the data (CSV)

FIG. A — Illustration, neurology panel

Twenty years of GZL at a glance: how often FDA decides these devices, how long 510(k) reviews take, how often they are recalled, and how many adverse event reports name the code.

FDA decisions per year · GZL

2in 2025

2007: 32009: 12011: 12012: 12013: 12014: 12016: 22017: 42018: 32020: 12021: 32022: 32023: 32025: 22026 (partial year): 1
2007high 4 (2017) · low 0 (2008)2026

2026 to Oct 25, outlined.

Median 510(k) review, days · GZL

206in 2023

2007: 166 days median2017: 222 days median2018: 58 days median2021: 262 days median2022: 90 days median2023: 206 days median
2007high 262 (2021) · low 58 (2018)2026

Receipt to decision; years with fewer than 3 clearances left blank.

Recalls per year · GZL

3in 2024

2008: 32009: 22014: 12021: 92024: 3
2007high 9 (2021) · low 0 (2007)2026

Class I (0 since 2007) Class II/III not classified

Adverse event reports per year · GZL

12in 2025

2008: 82009: 52010: 62011: 42012: 82013: 252014: 72015: 142016: 92017: 32018: 22019: 132020: 242021: 132022: 102023: 302024: 162025: 12
2007high 30 (2023) · low 0 (2007)2025

MAUDE reports naming product code GZL, not matched to any one device; reports are not rates.

View these four charts as a table
YearDecisionsMedian 510(k) review, daysRecalls (Class I)MAUDE reports
2007316600
20080—38
20091—25
20100—06
20111—04
20121—08
20131—025
20141—17
20150—014
20162—09
2017422203
201835802
20190—013
20201—024
20213262913
2022390010
20233206030
20240—316
20252—012
20261—0—
FIG. 1 — GZL by year, 2007–2026Sources: FDA decision databases, recall and enforcement reports, MAUDE · Data through Oct 25, 2026

Planning a device in GZL? A 510(k) Report ranks candidate predicates in this code by lineage, citations and recall history, with the review-time outlook.

See the 510(k) Report