Cleared Traditional

K850541 - SLEEP STAGER (FDA 510(k) Clearance)

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

K850541 · Oxford Medilog, Inc. · Neurology device
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Aug 1985
Decision
172d
Days
Class 2
Risk

K850541 is an FDA 510(k) clearance for the SLEEP STAGER. Classified as Non-normalizing Quantitative Electroencephalograph Software (product code OLT), Class II - Special Controls.

Submitted by Oxford Medilog, Inc. (Clearwater, US). The FDA issued a Cleared decision on August 2, 1985 after a review of 172 days - an extended review cycle.

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 K850541 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received February 11, 1985
Decision Date August 02, 1985
Days to Decision 172 days
Submission Type Traditional
Review Panel Neurology (NE)
Summary -
Third-party Review No - reviewed directly by FDA
Regulatory Context
Review time vs. panel average
24d slower than avg
Panel avg: 148d · This submission: 172d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

Device Classification

Product Code OLT Non-normalizing Quantitative Electroencephalograph Software
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 882.1400
Definition Analyze Electroencephalograph Data Using Conventional Methodology To Output And Display Standard Electroencephalograph Parameters For Interpretation By A Qualified User.
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 - OLT Non-normalizing Quantitative Electroencephalograph Software

All 53
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