Cleared Traditional

K904908 - STEREOTACTIC IRRADIATION SYSTEM

K904908 is an FDA 510(k) clearance for STEREOTACTIC IRRADIATION SYSTEM, manufactured by Northwest Medical Physics Center. The device is a Class 2 Radiology device with product code IYE cleared through the Traditional 510(k) pathway after a 218-day FDA review.

K904908 · Northwest Medical Physics Center · Radiology device
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Jun 1991
Decision
218d
Days
Class 2
Risk

K904908 is an FDA 510(k) clearance for the STEREOTACTIC IRRADIATION SYSTEM. Classified as Accelerator, Linear, Medical (product code IYE), Class II - Special Controls.

Submitted by Northwest Medical Physics Center (Lynnwood, US). The FDA issued a Cleared decision on June 6, 1991 after a review of 218 days - an extended review cycle.

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 Northwest Medical Physics Center devices

FDA 510(k) Submission Details - K904908

510(k) Number K904908 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received October 31, 1990
Decision Date June 06, 1991
Days to Decision 218 days
Submission Type Traditional
Review Panel Radiology (RA)
Summary -
Third-party Review No - reviewed directly by FDA
Regulatory Context
Review time vs. panel average
111d slower than avg
Panel avg: 107d · This submission: 218d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

IYE Device Classification - Class 2, Special Controls

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

All 593
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