Cleared Traditional

K853973 - WESCOR MODEL 3700 WEBSTER SWEAT INDUCER (FDA 510(k) Clearance)

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

K853973 · Wescor, Inc. · Physical Medicine device
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Oct 1985
Decision
20d
Days
Class 2
Risk

K853973 is an FDA 510(k) clearance for the WESCOR MODEL 3700 WEBSTER SWEAT INDUCER. Classified as Device, Iontophoresis, Specific Uses (product code KTB), Class II - Special Controls.

Submitted by Wescor, Inc. (Logan, US). The FDA issued a Cleared decision on October 16, 1985 after a review of 20 days - a notably fast clearance cycle.

This device falls under the Physical Medicine FDA review panel, regulated under 21 CFR 890.5525 - 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 Wescor, Inc. devices

Submission Details

510(k) Number K853973 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received September 26, 1985
Decision Date October 16, 1985
Days to Decision 20 days
Submission Type Traditional
Review Panel Physical Medicine (PM)
Summary -
Third-party Review No - reviewed directly by FDA
Regulatory Context
Review time vs. panel average
95d faster than avg
Panel avg: 115d · This submission: 20d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

Device Classification

Product Code KTB Device, Iontophoresis, Specific Uses
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 890.5525
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.