Cleared Special

RII INFRARED EAR THERMOMETER, MODELS THXXN SERIES (K040377) - FDA 510(k) Clearance

Class II General Hospital device cleared through the Special 510(k) pathway - typically does not require clinical trials.

K040377 · Radiant Innovation, Inc. · General Hospital
Download Printable Device Report (PDF)
Optimized for regulatory review, auditing and printing
Sep 2004
Decision
212d
Days
Class 2
Risk

K040377 is an FDA 510(k) clearance for the RII INFRARED EAR THERMOMETER, MODELS THXXN SERIES. Classified as Continuous Measurement Thermometer (product code FLL), Class II - Special Controls.

Submitted by Radiant Innovation, Inc. (Hsinchu, TW). The FDA issued a Cleared decision on September 16, 2004 after a review of 212 days - an extended review cycle.

This device falls under the General Hospital FDA review panel, regulated under 21 CFR 880.2910 - the FDA general hospital device framework. As a Special 510(k), this submission covers a manufacturer modification to an existing cleared device rather than a new device introduction.

Device pattern: Iterative device modification. Standard predicate reliance. This Special 510(k) clearance confirms that the manufacturer's modifications remained within the established regulatory envelope of the original cleared device.

View all Radiant Innovation, Inc. devices

Submission Details

510(k) Number K040377 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received February 17, 2004
Decision Date September 16, 2004
Days to Decision 212 days
Submission Type Special
Review Panel General Hospital (HO)
Summary Summary PDF
Third-party Review No - reviewed directly by FDA
Regulatory Context
Review time vs. panel average
83d slower than avg
Panel avg: 129d · This submission: 212d
Pathway characteristics
Modification to existing cleared device.

Device Classification

Product Code FLL Continuous Measurement Thermometer
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 880.2910
Definition A Continuous Measurement Thermometer Is A Clinical Electronic Thermometer Indicated To Measure The Body Or Skin Temperature Of A Person Continuously Or In Specified Intervals. Under This Regulation, This Product Code Represents Non-exempt Devices. For More Information, See 90 Fr 25889, Available At Https://www.govinfo.gov/content/pkg/fr-2025-06-18/pdf/2025-11207.pdf.
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.

Regulatory Peers - FLL Continuous Measurement Thermometer

All 797
Devices cleared under the same product code (FLL) and FDA review panel - the closest regulatory comparables to K040377.
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