Cleared Special

K171758 - M.U.S.T. Combined Set Screws

K171758 is an FDA 510(k) clearance for M.U.S.T. Combined Set Screws, manufactured by Medacta International S.A.. The device is a Class 2 Orthopedic device with product code NKB cleared through the Special 510(k) pathway after a 48-day FDA review.

K171758 · Medacta International S.A. · Orthopedic device
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Optimized for regulatory review, auditing and printing
Aug 2017
Decision
48d
Days
Class 2
Risk

K171758 is an FDA 510(k) clearance for the M.U.S.T. Combined Set Screws. Classified as Thoracolumbosacral Pedicle Screw System within the NKB classification (a category for thoracolumbosacral pedicle screw systems), Class II - Special Controls.

Submitted by Medacta International S.A. (Castel San Pietro (Ch), CH). The FDA issued a Cleared decision on August 1, 2017 after a review of 48 days - a notably fast clearance cycle.

This device falls under the Orthopedic FDA review panel, regulated under 21 CFR 888.3070 - the FDA orthopedic device regulatory framework. As a Special 510(k), this submission covers a manufacturer modification to an existing cleared device rather than a new device introduction.

Device pattern: Iterative device modification. Low regulatory complexity profile. This Special 510(k) clearance confirms that the manufacturer's modifications remained within the established regulatory envelope of the original cleared device.

View all Medacta International S.A. devices

FDA 510(k) Submission Details - K171758

510(k) Number K171758 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received June 14, 2017
Decision Date August 01, 2017
Days to Decision 48 days
Submission Type Special
Review Panel Orthopedic (OR)
Summary Summary PDF
Third-party Review No - reviewed directly by FDA
Combination Product No
PCCP Authorized No
Regulatory Context
Review time vs. panel average
74d faster than avg
Panel avg: 122d · This submission: 48d
Pathway characteristics
Modification to existing cleared device.

NKB Device Classification - Class 2, Special Controls

Product Code NKB Thoracolumbosacral Pedicle Screw System
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 888.3070
Definition Intended To Provide Immobilization And Stabilization Of Spinal Segments In Thoracic, Lumbar, And Sacral Spine As An Adjunct To Fusion.
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 Consultant

Mapi USA, Inc.
Roshana Ahmed, M.A., RAC

The regulatory consultant manages the 510(k) submission process on behalf of the applicant - coordinating technical documentation, predicate strategy and FDA communications. Identifying the consultant behind a submission is a key signal for competitive regulatory intelligence.

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All 878
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