Cleared Traditional

K972140 - A1 ACOUSTIC RHINOMETER (FDA 510(k) Clearance)

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

K972140 · G.M. Instruments , Ltd. · Anesthesiology device
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Sep 1998
Decision
481d
Days
Class 2
Risk

K972140 is an FDA 510(k) clearance for the A1 ACOUSTIC RHINOMETER. Classified as Rhinoanemometer (measurement Of Nasal Decongestion) (product code BXQ), Class II - Special Controls.

Submitted by G.M. Instruments , Ltd. (Kilwinning, GB). The FDA issued a Cleared decision on September 30, 1998 after a review of 481 days - an unusually long review period, suggesting complex equivalence evaluation.

This device falls under the Anesthesiology FDA review panel, regulated under 21 CFR 868.1800 - the FDA anesthesiology and respiratory 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 Anesthesiology submissions.

View all G.M. Instruments , Ltd. devices

Submission Details

510(k) Number K972140 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received June 06, 1997
Decision Date September 30, 1998
Days to Decision 481 days
Submission Type Traditional
Review Panel Anesthesiology (AN)
Summary Statement
Third-party Review No - reviewed directly by FDA
Regulatory Context
Review time vs. panel average
342d slower than avg
Panel avg: 139d · This submission: 481d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

Device Classification

Product Code BXQ Rhinoanemometer (measurement Of Nasal Decongestion)
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 868.1800
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 Anesthesiology devices follow this clearance model.