Cleared Traditional

BUSHEL OFF-HEAD PREAMPLIFIER (K850418) - FDA 510(k) Clearance

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

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

Submission Details

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
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.

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 K850418.
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