Cleared Traditional

DIASONICS ADA400 ADVANCED DIGITAL ARRAY (K851972) - FDA 510(k) Clearance

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

K851972 · Diasonics, Inc. · Radiology device
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Dec 1985
Decision
238d
Days
Class 2
Risk

K851972 is an FDA 510(k) clearance for the DIASONICS ADA400 ADVANCED DIGITAL ARRAY. Classified as System, Imaging, Pulsed Echo, Ultrasonic (product code IYO), Class II - Special Controls.

Submitted by Diasonics, Inc. (Milipitas, US). The FDA issued a Cleared decision on December 31, 1985 after a review of 238 days - an extended review cycle.

This device falls under the Radiology FDA review panel, regulated under 21 CFR 892.1560 - 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 Diasonics, Inc. devices

Submission Details

510(k) Number K851972 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received May 07, 1985
Decision Date December 31, 1985
Days to Decision 238 days
Submission Type Traditional
Review Panel Radiology (RA)
Summary -
Third-party Review No - reviewed directly by FDA
Regulatory Context
Review time vs. panel average
131d slower than avg
Panel avg: 107d · This submission: 238d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

Device Classification

Product Code IYO System, Imaging, Pulsed Echo, Ultrasonic
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 892.1560
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 - IYO System, Imaging, Pulsed Echo, Ultrasonic

All 205
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