Cleared Special

K192940 - CoolTone (FDA 510(k) Clearance)

Class II Physical Medicine device cleared through the Special 510(k) pathway - typically does not require clinical trials.

K192940 · Zimmer Medizinsysteme GmbH · Physical Medicine device
Download Printable Device Report (PDF)
Optimized for regulatory review, auditing and printing
Nov 2019
Decision
28d
Days
Class 2
Risk

K192940 is an FDA 510(k) clearance for the CoolTone. Classified as Stimulator, Muscle, Powered, For Muscle Conditioning (product code NGX), Class II - Special Controls.

Submitted by Zimmer Medizinsysteme GmbH (Neu-Ulm, DE). The FDA issued a Cleared decision on November 15, 2019 after a review of 28 days - a notably fast clearance cycle.

This device falls under the Physical Medicine FDA review panel, regulated under 21 CFR 890.5850 - the FDA physical medicine device 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 Zimmer Medizinsysteme GmbH devices

Submission Details

510(k) Number K192940 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received October 18, 2019
Decision Date November 15, 2019
Days to Decision 28 days
Submission Type Special
Review Panel Physical Medicine (PM)
Summary Summary PDF
Third-party Review No - reviewed directly by FDA
Regulatory Context
Review time vs. panel average
87d faster than avg
Panel avg: 115d · This submission: 28d
Pathway characteristics
Modification to existing cleared device.

Device Classification

Product Code NGX Stimulator, Muscle, Powered, For Muscle Conditioning
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 890.5850
Definition A Powered Muscle Stimulator For Muscle Conditioning Is A Device Used For Other Than Medical Purposes To Apply An Electrical Current To Electrodes On A Person's Skin To Temporarily Affect The Stimulated Muscle's Contractile Properties, Force Output, And/or Fatigue Resistance. Unlike The Classified Powered Muscle Stimulator Devices Intended For Use In Physical Medicine And Rehabilitation, This Device Is Not Intended For Use In Patients With Medical Conditions And Is Intended Only For Muscle Conditioning Purposes.
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 Physical Medicine devices follow this clearance model.

Regulatory Peers - NGX Stimulator, Muscle, Powered, For Muscle Conditioning

All 161
Devices cleared under the same product code (NGX) and FDA review panel - the closest regulatory comparables to K192940.
Diacore
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K253636 · Termosalud S.L. · Mar 2026
CoolTone
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K252154 · Guangzhou Longest Medical Technology Co., Ltd. · Dec 2025
Motive™ Muscle Stimulator for Lower Back (OT01-1003)
K253478 · Motive Health, Inc. · Nov 2025
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