Cleared Traditional

K843950 - LINK CEMENTLESS SCREW-IN ACETABULAR CUP (FDA 510(k) Clearance)

Class III device cleared through the 510(k) pathway via substantial equivalence to a legally marketed predicate.

K843950 · Waldemar Link GmbH & Co. KG · Orthopedic device
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Jun 1985
Decision
237d
Days
Class 3
Risk

K843950 is an FDA 510(k) clearance for the LINK CEMENTLESS SCREW-IN ACETABULAR CUP. Classified as Prosthesis, Hip, Semi-constrained (metal Uncemented Acetabular Component) (product code KWA), Class III - Premarket Approval.

Submitted by Waldemar Link GmbH & Co. KG (E. Hanover, US). The FDA issued a Cleared decision on June 3, 1985 after a review of 237 days - an extended review cycle.

This device falls under the Orthopedic FDA review panel, regulated under 21 CFR 888.3330 - 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: High-complexity regulatory submission. High regulatory complexity 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 Waldemar Link GmbH & Co. KG devices

Submission Details

510(k) Number K843950 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received October 09, 1984
Decision Date June 03, 1985
Days to Decision 237 days
Submission Type Traditional
Review Panel Orthopedic (OR)
Summary -
Third-party Review No - reviewed directly by FDA
Regulatory Context
Review time vs. panel average
115d slower than avg
Panel avg: 122d · This submission: 237d
Pathway characteristics
Predicate-based equivalence.

Device Classification

Product Code KWA Prosthesis, Hip, Semi-constrained (metal Uncemented Acetabular Component)
Device Class Class 3 - Premarket Approval
CFR Regulation 21 CFR 888.3330
What this classification means

Class III devices typically require Premarket Approval (PMA) with clinical evidence. Clearance through 510(k) for Class III devices is granted only when substantial equivalence to a valid predicate can be established.