Cleared Traditional

PEGASUS (K935009) - FDA 510(k) Clearance

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

K935009 · Advanced Technology Laboratories, Inc. · Radiology device
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Oct 1994
Decision
356d
Days
Class 2
Risk

K935009 is an FDA 510(k) clearance for the PEGASUS. Classified as System, Imaging, Pulsed Doppler, Ultrasonic within the IYN classification (a category covering pulsed Doppler and ultrasound imaging systems), Class II - Special Controls.

Submitted by Advanced Technology Laboratories, Inc. (Bothell, US). The FDA issued a Cleared decision on October 11, 1994 after a review of 356 days - an unusually long review period, suggesting complex equivalence evaluation.

This device falls under the Radiology FDA review panel, regulated under 21 CFR 892.1550 - 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. Elevated predicate reliance profile. 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 Advanced Technology Laboratories, Inc. devices

Submission Details

510(k) Number K935009 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received October 20, 1993
Decision Date October 11, 1994
Days to Decision 356 days
Submission Type Traditional
Review Panel Radiology (RA)
Summary Summary PDF
Third-party Review No - reviewed directly by FDA
Regulatory Context
Review time vs. panel average
249d slower than avg
Panel avg: 107d · This submission: 356d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

Device Classification

Product Code IYN System, Imaging, Pulsed Doppler, Ultrasonic
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 892.1550
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 - IYN System, Imaging, Pulsed Doppler, Ultrasonic

All 609
Devices cleared under the same product code (IYN) and FDA review panel - the closest regulatory comparables to K935009.
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K935923 · Hewlett-Packard Co. · Dec 1994
HEWLETT PACKARD CONOS ULTRASOUND IMAGING SYSTEM MODIFICATION
K934041 · Hewlett-Packard Co. · Sep 1994
VENUS DIAGNOSTIC ULTRASOUND SYSTEM
K933202 · GE Medical Systems · Jun 1994
PULSED DOPPLER OPTION, CONTINU-WAVE
K842407 · General Electric Co. · Feb 1985