Cleared Traditional

DIGITAL FLUOROGRAPHIC IMAGING SYSTEM DIGIFORMER (K844037) - FDA 510(k) Clearance

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

K844037 · Toshiba Medical Systems · Radiology device
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Mar 1985
Decision
136d
Days
Class 2
Risk

K844037 is an FDA 510(k) clearance for the DIGITAL FLUOROGRAPHIC IMAGING SYSTEM DIGIFORMER. 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 Toshiba Medical Systems (Tustin, US). The FDA issued a Cleared decision on March 1, 1985 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.

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Submission Details

510(k) Number K844037 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received October 16, 1984
Decision Date March 01, 1985
Days to Decision 136 days
Submission Type Traditional
Review Panel Radiology (RA)
Summary -
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.

Device Classification

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.