Cleared Traditional

K191938 - FitRelief TENS&EMS Wireless Device (FDA 510(k) Clearance)

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

Download Printable Device Report (PDF)
Optimized for regulatory review, auditing and printing
Aug 2020
Decision
406d
Days
Class 2
Risk

K191938 is an FDA 510(k) clearance for the FitRelief TENS&EMS Wireless Device. Classified as Stimulator, Muscle, Powered, For Muscle Conditioning (product code NGX), Class II - Special Controls.

Submitted by Heat IN A Click, LLC (Dania, US). The FDA issued a Cleared decision on August 28, 2020 after a review of 406 days - an unusually long review period, suggesting complex equivalence evaluation.

This device falls under the Neurology FDA review panel, regulated under 21 CFR 890.5850 - the FDA neurology device 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 Neurology submissions.

View all Heat IN A Click, LLC devices

Submission Details

510(k) Number K191938 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received July 19, 2019
Decision Date August 28, 2020
Days to Decision 406 days
Submission Type Traditional
Review Panel Neurology (NE)
Summary Statement
Third-party Review No - reviewed directly by FDA
Regulatory Context
Review time vs. panel average
258d slower than avg
Panel avg: 148d · This submission: 406d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

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 Neurology 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 K191938.
Diacore
K253926 · ShenB Co., Ltd. · Apr 2026
Zionic Pro Max (EMS)
K253636 · Termosalud S.L. · Mar 2026
CoolTone
K253408 · Zimmer Medizinsysteme GmbH · Jan 2026
Portable Electro Stimulation Therapy Device (LGT-2320BE, LGT-2320ME, and LGT-2320SP)
K252154 · Guangzhou Longest Medical Technology Co., Ltd. · Dec 2025
Motive™ Muscle Stimulator for Lower Back (OT01-1003)
K253478 · Motive Health, Inc. · Nov 2025
truFlex
K251594 · Syrma Johari Medtech Limited · Aug 2025