Cleared Traditional

K251641 - GF-310R Multigas Unit (GF-310R)

K251641 is an FDA 510(k) clearance for GF-310R Multigas Unit (GF-310R), manufactured by Nihon Kohden Corporation. The device is a Class 2 Anesthesiology device with product code CCK cleared through the Traditional 510(k) pathway after a 440-day FDA review.

K251641 · Nihon Kohden Corporation · Anesthesiology device
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Aug 2026
Decision
440d
Days
Class 2
Risk

K251641 is an FDA 510(k) clearance for the GF-310R Multigas Unit (GF-310R). Classified as Analyzer, Gas, Carbon-dioxide, Gaseous-phase (product code CCK), Class II - Special Controls.

Submitted by Nihon Kohden Corporation (Tokyo, JP). The FDA issued a Cleared decision on August 12, 2026 after a review of 440 days - an unusually long review period, suggesting complex equivalence evaluation.

This device falls under the Anesthesiology FDA review panel, regulated under 21 CFR 868.1400 - 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 Nihon Kohden Corporation devices

FDA 510(k) Submission Details - K251641

510(k) Number K251641 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received May 29, 2025
Decision Date August 12, 2026
Days to Decision 440 days
Submission Type Traditional
Review Panel Anesthesiology (AN)
Summary Summary PDF
Third-party Review No - reviewed directly by FDA
Combination Product No
PCCP Authorized No
Regulatory Context
Review time vs. panel average
300d slower than avg
Panel avg: 140d · This submission: 440d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

CCK Device Classification - Class 2, Special Controls

Product Code CCK Analyzer, Gas, Carbon-dioxide, Gaseous-phase
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 868.1400
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.

Regulatory Peers - CCK Analyzer, Gas, Carbon-dioxide, Gaseous-phase

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