Cleared Traditional

K951164 - CD LIBERTY POSTERIOR SPINCAL SYSTEM (FDA 510(k) Clearance)

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

K951164 · Sofamor Danek USA,Inc. · Orthopedic device
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Feb 1996
Decision
332d
Days
Class 2
Risk

K951164 is an FDA 510(k) clearance for the CD LIBERTY POSTERIOR SPINCAL SYSTEM. Classified as Appliance, Fixation, Spinal Interlaminal (product code KWP), Class II - Special Controls.

Submitted by Sofamor Danek USA,Inc. (Memphis, US). The FDA issued a Cleared decision on February 9, 1996 after a review of 332 days - an unusually long review period, suggesting complex equivalence evaluation.

This device falls under the Orthopedic FDA review panel, regulated under 21 CFR 888.3050 - the FDA orthopedic device regulatory 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. Elevated predicate reliance profile. This clearance follows a standard predicate-based equivalence path within the Orthopedic review framework, consistent with the majority of Class II 510(k) submissions.

View all Sofamor Danek USA,Inc. devices

Submission Details

510(k) Number K951164 FDA.gov
FDA Decision Cleared Substantially Equivalent - NSE Converted (SN)
Date Received March 14, 1995
Decision Date February 09, 1996
Days to Decision 332 days
Submission Type Traditional
Review Panel Orthopedic (OR)
Summary -
Third-party Review No - reviewed directly by FDA
Regulatory Context
Review time vs. panel average
210d slower than avg
Panel avg: 122d · This submission: 332d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

Device Classification

Product Code KWP Appliance, Fixation, Spinal Interlaminal
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 888.3050
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 Orthopedic devices follow this clearance model.