Cleared Traditional

K222941 - Halcyon

K222941 is the FDA 510(k) clearance for Halcyon by Varian Medical Systems, Inc.. It is a Class 2 Radiology device (product code IYE) cleared through the Traditional 510(k) pathway after a 113-day FDA review.

K222941 · Varian Medical Systems, Inc. · Radiology device
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Jan 2023
Decision
113d
Days
Class 2
Risk

K222941 is an FDA 510(k) clearance for the Halcyon, Ethos Radiotherapy System. Classified as Accelerator, Linear, Medical (product code IYE), Class II - Special Controls.

Submitted by Varian Medical Systems, Inc. (Palo Alto, US). The FDA issued a Cleared decision on January 17, 2023 after a review of 113 days - within the typical 510(k) review window.

This device falls under the Radiology FDA review panel, regulated under 21 CFR 892.5050 - the FDA radiology and imaging software oversight 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. Standard predicate reliance. This clearance follows a standard predicate-based equivalence path within the Radiology review framework, consistent with the majority of Class II 510(k) submissions.

View all Varian Medical Systems, Inc. devices

Submission Details

510(k) Number K222941 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received September 26, 2022
Decision Date January 17, 2023
Days to Decision 113 days
Submission Type Traditional
Review Panel Radiology (RA)
Summary Summary PDF
Third-party Review No - reviewed directly by FDA
Combination Product No
PCCP Authorized No
Regulatory Context
Review time vs. panel average
6d slower than avg
Panel avg: 107d · This submission: 113d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

Device Classification

Product Code IYE Accelerator, Linear, Medical
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 892.5050
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 Radiology devices follow this clearance model.

Regulatory Peers - IYE Accelerator, Linear, Medical

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