Cleared Traditional

K923841 - BONE SCREWS (FDA 510(k) Clearance)

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

K923841 · Instrument Makar, Inc. · Orthopedic device
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Oct 1993
Decision
453d
Days
Class 2
Risk

K923841 is an FDA 510(k) clearance for the BONE SCREWS. Classified as Screw, Fixation, Bone (product code HWC), Class II - Special Controls.

Submitted by Instrument Makar, Inc. (Lansing, US). The FDA issued a Cleared decision on October 27, 1993 after a review of 453 days - an unusually long review period, suggesting complex equivalence evaluation.

This device falls under the Orthopedic FDA review panel, regulated under 21 CFR 888.3040 - 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. Elevated predicate reliance profile. The extended review timeline suggests the FDA required additional documentation before confirming substantial equivalence - a pattern common in complex or first-of-kind Orthopedic submissions.

View all Instrument Makar, Inc. devices

Submission Details

510(k) Number K923841 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received July 31, 1992
Decision Date October 27, 1993
Days to Decision 453 days
Submission Type Traditional
Review Panel Orthopedic (OR)
Summary Statement
Third-party Review No - reviewed directly by FDA
Regulatory Context
Review time vs. panel average
331d slower than avg
Panel avg: 122d · This submission: 453d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

Device Classification

Product Code HWC Screw, Fixation, Bone
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 888.3040
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.

Regulatory Peers - HWC Screw, Fixation, Bone

All 1054
Devices cleared under the same product code (HWC) and FDA review panel - the closest regulatory comparables to K923841.
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Treace Medical Concepts (TMC) Screw Fixation System
K260361 · Treace Medical Concepts, Inc. · Mar 2026