Cleared Traditional

K984161 - CTS-310(B) (FDA 510(k) Clearance)

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

K984161 · Shantou Institute of Ultrasonic Instuments · Radiology device
Download Printable Device Report (PDF)
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May 1999
Decision
166d
Days
Class 2
Risk

K984161 is an FDA 510(k) clearance for the CTS-310(B). Classified as System, Imaging, Pulsed Echo, Ultrasonic (product code IYO), Class II - Special Controls.

Submitted by Shantou Institute of Ultrasonic Instuments (Walnut Creek, US). The FDA issued a Cleared decision on May 5, 1999 after a review of 166 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 Shantou Institute of Ultrasonic Instuments devices

Submission Details

510(k) Number K984161 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received November 20, 1998
Decision Date May 05, 1999
Days to Decision 166 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
59d slower than avg
Panel avg: 107d · This submission: 166d
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

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