Cleared Traditional

MICROMAT W/VARIOUS MODELS (K831117) - FDA 510(k) Clearance

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

K831117 · Pmt, Inc. · General Hospital
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May 1984
Decision
421d
Days
Class 2
Risk

K831117 is an FDA 510(k) clearance for the MICROMAT W/VARIOUS MODELS. Classified as Pad, Kelly (product code FNW), Class II - Special Controls.

Submitted by Pmt, Inc. (Hopkins, US). The FDA issued a Cleared decision on May 30, 1984 after a review of 421 days - an unusually long review period, suggesting complex equivalence evaluation.

This device falls under the General Hospital FDA review panel, regulated under 21 CFR 878.4370 - the FDA general hospital 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: High-complexity regulatory submission. Elevated predicate reliance profile. The extended review timeline suggests the FDA required additional documentation before confirming substantial equivalence - a pattern common in complex or first-of-kind General Hospital submissions.

View all Pmt, Inc. devices

Submission Details

510(k) Number K831117 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received April 05, 1983
Decision Date May 30, 1984
Days to Decision 421 days
Submission Type Traditional
Review Panel General Hospital (HO)
Summary -
Third-party Review No - reviewed directly by FDA
Regulatory Context
Review time vs. panel average
292d slower than avg
Panel avg: 129d · This submission: 421d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

Device Classification

Product Code FNW Pad, Kelly
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 878.4370
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 General Hospital devices follow this clearance model.