Cleared Traditional

K923433 - AS/3 ANAESTHESIA MONITORING SYSTEM AIRWAY MODULE (FDA 510(k) Clearance)

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

K923433 · Instrumentarium Corp. · Anesthesiology device
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Jul 1993
Decision
374d
Days
Class 2
Risk

K923433 is an FDA 510(k) clearance for the AS/3 ANAESTHESIA MONITORING SYSTEM AIRWAY MODULE. Classified as Analyzer, Gas, Enflurane, Gaseous-phase (anesthetic Concentration) (product code CBQ), Class II - Special Controls.

Submitted by Instrumentarium Corp. (Finland, FI). The FDA issued a Cleared decision on July 22, 1993 after a review of 374 days - an unusually long review period, suggesting complex equivalence evaluation.

This device falls under the Anesthesiology FDA review panel, regulated under 21 CFR 868.1500 - 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: Standard predicate-based submission. Elevated predicate reliance profile. This clearance follows a standard predicate-based equivalence path within the Anesthesiology review framework, consistent with the majority of Class II 510(k) submissions.

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Submission Details

510(k) Number K923433 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received July 13, 1992
Decision Date July 22, 1993
Days to Decision 374 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
235d slower than avg
Panel avg: 139d · This submission: 374d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

Device Classification

Product Code CBQ Analyzer, Gas, Enflurane, Gaseous-phase (anesthetic Concentration)
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 868.1500
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.