Cleared Traditional

K850418 - BUSHEL OFF-HEAD PREAMPLIFIER

K850418 is an FDA 510(k) clearance for BUSHEL OFF-HEAD PREAMPLIFIER, manufactured by Oxford Medilog, Inc.. The device is a Class 2 Neurology device with product code GWQ cleared through the Traditional 510(k) pathway after a 129-day FDA review.

K850418 · Oxford Medilog, Inc. · Neurology device
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Jun 1985
Decision
129d
Days
Class 2
Risk

K850418 is an FDA 510(k) clearance for the BUSHEL OFF-HEAD PREAMPLIFIER. Classified as Full-montage Standard Electroencephalograph (product code GWQ), Class II - Special Controls.

Submitted by Oxford Medilog, Inc. (Clearwater, US). The FDA issued a Cleared decision on June 13, 1985 after a review of 129 days - within the typical 510(k) review window.

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. Standard predicate reliance. 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 Oxford Medilog, Inc. devices

FDA 510(k) Submission Details - K850418

510(k) Number K850418 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received February 04, 1985
Decision Date June 13, 1985
Days to Decision 129 days
Submission Type Traditional
Review Panel Neurology (NE)
Summary -
Third-party Review No - reviewed directly by FDA
Combination Product No
PCCP Authorized No
Regulatory Context
Review time vs. panel average
19d faster than avg
Panel avg: 148d · This submission: 129d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

GWQ Device Classification - Class 2, Special Controls

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 93
Devices cleared under the same product code (GWQ) and FDA review panel - the closest regulatory comparables to K850418.
NEUROFAX 7310 SERIES (EEG)
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DEL MAR AVIONICS 5509A PHYSIOSCANNER EEG SCANNER
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TECA MONTAGE II
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DEL MAR AVIONICS 5509 NEURO-SCANNER
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EEG-4300 W/OPTINAL ACCESS. EEG 4314 &
K842714 · Nihon Kohden America, Inc. · Sep 1984