Cleared Traditional

CEEGRAPH, MODIFICATION (K933233) - FDA 510(k) Clearance

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

K933233 · Bio-Logic Systems Corp. · Neurology device
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Mar 1994
Decision
316d
Days
Class 2
Risk

K933233 is an FDA 510(k) clearance for the CEEGRAPH, MODIFICATION. Classified as Full-montage Standard Electroencephalograph (product code GWQ), Class II - Special Controls.

Submitted by Bio-Logic Systems Corp. (Mudelein, US). The FDA issued a Cleared decision on March 3, 1994 after a review of 316 days - an unusually long review period, suggesting complex equivalence evaluation.

This device falls under the Neurology FDA review panel, regulated under 21 CFR 882.1400 - 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: Standard predicate-based submission. Elevated predicate reliance profile. This clearance follows a standard predicate-based equivalence path within the Neurology review framework, consistent with the majority of Class II 510(k) submissions.

View all Bio-Logic Systems Corp. devices

Submission Details

510(k) Number K933233 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received April 21, 1993
Decision Date March 03, 1994
Days to Decision 316 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
168d slower than avg
Panel avg: 148d · This submission: 316d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

Device Classification

Product Code GWQ Full-montage Standard Electroencephalograph
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 882.1400
Definition Acquire, Display, Store, And Archive Electroencephalographic Signals From The Brain Using A Full Montage Array (i.e., 16 Or More Electrodes) And User-specified Locations
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 - GWQ Full-montage Standard Electroencephalograph

All 43
Devices cleared under the same product code (GWQ) and FDA review panel - the closest regulatory comparables to K933233.
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