Cleared Traditional

K984178 - PRONOSCO X-POSURE SYSTEM (FDA 510(k) Clearance)

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

K984178 · Torsana Osteoporosis Diagnostics A/S · Radiology device
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Feb 1999
Decision
90d
Days
Class 2
Risk

K984178 is an FDA 510(k) clearance for the PRONOSCO X-POSURE SYSTEM. Classified as Densitometer, Bone (product code KGI), Class II - Special Controls.

Submitted by Torsana Osteoporosis Diagnostics A/S (Washington, US). The FDA issued a Cleared decision on February 18, 1999 after a review of 90 days - within the typical 510(k) review window.

This device falls under the Radiology FDA review panel, regulated under 21 CFR 892.1170 - 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 Torsana Osteoporosis Diagnostics A/S devices

Submission Details

510(k) Number K984178 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received November 20, 1998
Decision Date February 18, 1999
Days to Decision 90 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
17d faster than avg
Panel avg: 107d · This submission: 90d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

Device Classification

Product Code KGI Densitometer, Bone
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 892.1170
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.