Cleared Traditional

MS300 (K984021) - FDA 510(k) Clearance

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

K984021 · Lsi Intl., Inc. · Physical Medicine device
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Jan 1999
Decision
77d
Days
Class 2
Risk

K984021 is an FDA 510(k) clearance for the MS300. Classified as Stimulator, Muscle, Powered (product code IPF), Class II - Special Controls.

Submitted by Lsi Intl., Inc. (Overland Park, US). The FDA issued a Cleared decision on January 28, 1999 after a review of 77 days - a notably fast clearance cycle.

This device falls under the Physical Medicine FDA review panel, regulated under 21 CFR 890.5850 - the FDA physical medicine 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: Fast-track predicate clearance. Standard predicate reliance. The short review cycle indicates strong predicate alignment - the FDA found sufficient equivalence without extended technical review.

View all Lsi Intl., Inc. devices

Submission Details

510(k) Number K984021 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received November 12, 1998
Decision Date January 28, 1999
Days to Decision 77 days
Submission Type Traditional
Review Panel Physical Medicine (PM)
Summary Statement
Third-party Review No - reviewed directly by FDA
Regulatory Context
Review time vs. panel average
38d faster than avg
Panel avg: 115d · This submission: 77d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

Device Classification

Product Code IPF Stimulator, Muscle, Powered
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 890.5850
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 Physical Medicine devices follow this clearance model.

Regulatory Peers - IPF Stimulator, Muscle, Powered

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