Cleared Traditional

K973363 - NORTH AMERICAN SCIENTIFIC(NASI)PD-103 RADIONUCLIDE BRACHYTHERAPY SOURCE-MODEL MED3633 (FDA 510(k) Clearance)

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

K973363 · Ml Strategies, Inc. · Radiology device
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Jul 1998
Decision
297d
Days
Class 2
Risk

K973363 is an FDA 510(k) clearance for the NORTH AMERICAN SCIENTIFIC(NASI)PD-103 RADIONUCLIDE BRACHYTHERAPY SOURCE-MODEL.... Classified as Source, Isotope, Sealed, Gold, Titanium, Platinum (product code IWI), Class II - Special Controls.

Submitted by Ml Strategies, Inc. (Boston, US). The FDA issued a Cleared decision on July 2, 1998 after a review of 297 days - an extended review cycle.

This device falls under the Radiology FDA review panel, regulated under 21 CFR 892.5730 - 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.

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Submission Details

510(k) Number K973363 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received September 08, 1997
Decision Date July 02, 1998
Days to Decision 297 days
Submission Type Traditional
Review Panel Radiology (RA)
Summary Statement
Third-party Review No - reviewed directly by FDA
Regulatory Context
Review time vs. panel average
190d slower than avg
Panel avg: 107d · This submission: 297d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

Device Classification

Product Code IWI Source, Isotope, Sealed, Gold, Titanium, Platinum
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 892.5730
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.