Cleared Traditional

GRAHAM-FIELD ELECTRODE CONDUCTIVITY GEL (K944598) - FDA 510(k) Clearance

Class II Neurology device cleared through predicate-based substantial equivalence - typically does not require clinical trials.

K944598 · Chester Labs, Inc. · Neurology device
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May 1996
Decision
596d
Days
Class 2
Risk

K944598 is an FDA 510(k) clearance for the GRAHAM-FIELD ELECTRODE CONDUCTIVITY GEL. Classified as Media, Electroconductive (product code GYB), Class II - Special Controls.

Submitted by Chester Labs, Inc. (Cincinnati, US). The FDA issued a Cleared decision on May 7, 1996 after a review of 596 days - an unusually long review period, suggesting complex equivalence evaluation.

This device falls under the Neurology FDA review panel, regulated under 21 CFR 882.1275 - the FDA neurology device framework. The Traditional 510(k) pathway establishes clearance through substantial equivalence to a legally marketed predicate device, without requiring clinical trial data.

Device pattern: High-complexity regulatory submission. Elevated predicate reliance profile. The extended review timeline suggests the FDA required additional documentation before confirming substantial equivalence - a pattern common in complex or first-of-kind Neurology submissions.

View all Chester Labs, Inc. devices

Submission Details

510(k) Number K944598 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received September 19, 1994
Decision Date May 07, 1996
Days to Decision 596 days
Submission Type Traditional
Review Panel Neurology (NE)
Summary Statement
Third-party Review No - reviewed directly by FDA
Regulatory Context
Review time vs. panel average
448d slower than avg
Panel avg: 148d · This submission: 596d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

Device Classification

Product Code GYB Media, Electroconductive
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 882.1275
What this classification means

Class II devices require demonstration of substantial equivalence to a legally marketed predicate device. This pathway does not require clinical trials - it relies on engineering equivalence and performance data. Most Neurology devices follow this clearance model.

Regulatory Peers - GYB Media, Electroconductive

All 13
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