Cleared Traditional

K031567 - 3D INVIVO BY CSIST

K031567 is an FDA 510(k) clearance for 3D INVIVO BY CSIST, manufactured by Chung-Shan Institute of Science and Technology. The device is a Class 2 Radiology device with product code LLZ cleared through the Traditional 510(k) pathway after a 136-day FDA review.

K031567 · Chung-Shan Institute of Science and Technology · Radiology device
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Oct 2003
Decision
136d
Days
Class 2
Risk

K031567 is an FDA 510(k) clearance for the 3D INVIVO BY CSIST. Classified as System, Image Processing, Radiological within the LLZ classification (a category encompassing advanced image processing and PACS-adjacent software), Class II - Special Controls.

Submitted by Chung-Shan Institute of Science and Technology (Denton, US). The FDA issued a Cleared decision on October 2, 2003 after a review of 136 days - within the typical 510(k) review window.

This device falls under the Radiology FDA review panel, regulated under 21 CFR 892.2050 - 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: Incremental AI imaging tool. Moderate equivalence dependency. Overall, this clearance reflects a predicate-aligned approval typical of modern AI radiology extensions - not a novel clinical breakthrough, but a validated iteration within an established regulatory category.

View all Chung-Shan Institute of Science and Technology devices

FDA 510(k) Submission Details - K031567

510(k) Number K031567 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received May 19, 2003
Decision Date October 02, 2003
Days to Decision 136 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
29d slower than avg
Panel avg: 107d · This submission: 136d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

LLZ Device Classification - Class 2, Special Controls

Product Code LLZ System, Image Processing, Radiological
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 892.2050
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 - LLZ System, Image Processing, Radiological

All 1588
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