Cleared Traditional

K233784 - ENSO (Model 2) (FDA 510(k) Clearance)

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

K233784 · Hinge Health, Inc. · Neurology device
Download Printable Device Report (PDF)
Optimized for regulatory review, auditing and printing
Feb 2024
Decision
88d
Days
Class 2
Risk

K233784 is an FDA 510(k) clearance for the ENSO (Model 2). Classified as Stimulator, Nerve, Transcutaneous, Over-the-counter (product code NUH), Class II - Special Controls.

Submitted by Hinge Health, Inc. (San Francisco, US). The FDA issued a Cleared decision on February 23, 2024 after a review of 88 days - a notably fast clearance cycle.

This device falls under the Neurology FDA review panel, regulated under 21 CFR 882.5890 - 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: Fast-track predicate clearance. Standard predicate reliance. The short review cycle indicates strong predicate alignment - the FDA found sufficient equivalence without extended technical review.

View all Hinge Health, Inc. devices

Submission Details

510(k) Number K233784 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received November 27, 2023
Decision Date February 23, 2024
Days to Decision 88 days
Submission Type Traditional
Review Panel Neurology (NE)
Summary Summary PDF
Third-party Review No - reviewed directly by FDA
Combination Product No
PCCP Authorized No
Regulatory Context
Review time vs. panel average
60d faster than avg
Panel avg: 148d · This submission: 88d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

Device Classification

Product Code NUH Stimulator, Nerve, Transcutaneous, Over-the-counter
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 882.5890
Definition Temporary Relief Of Pain Due To Sore/aching Muscles
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 Consultant

Ebg Advisors, Inc.
Dawn Norman

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.

Regulatory Peers - NUH Stimulator, Nerve, Transcutaneous, Over-the-counter

All 226
Devices cleared under the same product code (NUH) and FDA review panel - the closest regulatory comparables to K233784.
TENS/EMS device (GUSE01)
K253896 · Globalcare Medical Technology Co., Ltd. · Mar 2026
TENS AND EMS (TENS and Muscle Stimulator) (JT1065, JT1080, JT2080, JT9034)
K253305 · Shenzhen Jiantuo Electronics Co., Ltd. · Dec 2025
VEINOPLUS Back
K251958 · Dynapulse Medical · Dec 2025
TENS&EMS (HZ9151B, HZ9151C, HZ9151D)
K253740 · Hong Qiangxing (Shenzhen) Electronics Limited · Dec 2025
Transcutaneous Electrical Nerve Stimulator (RJTENS-2)
K252688 · Bozhou Rongjian Medical Appliance Co., Ltd. · Nov 2025
Li-Battery Powered OTC TENS/EMS Combination Stimulator, Model Z4
K251856 · Everyway Medical Instruments Co.,Ltd · Nov 2025