Cleared Traditional

K252839 - ZywieZ3 Sensor & Adhesive

K252839 is an FDA 510(k) clearance for ZywieZ3 Sensor & Adhesive, manufactured by Zywie, Inc.. The device is a Class 2 Cardiovascular device with product code MWJ cleared through the Traditional 510(k) pathway after a 286-day FDA review.

Download Printable Device Report (PDF)
Optimized for regulatory review, auditing and printing
Jun 2026
Decision
286d
Days
Class 2
Risk

K252839 is an FDA 510(k) clearance for the ZywieZ3 Sensor & Adhesive. Classified as Electrocardiograph, Ambulatory (without Analysis) (product code MWJ), Class II - Special Controls.

Submitted by Zywie, Inc. (Johns Creek, US). The FDA issued a Cleared decision on June 18, 2026 after a review of 286 days - an extended review cycle.

This device falls under the Cardiovascular FDA review panel, regulated under 21 CFR 870.2800 - the FDA cardiovascular device oversight framework. The Traditional 510(k) pathway establishes clearance through substantial equivalence to a legally marketed predicate device, without requiring clinical trial data.

Device pattern: Standard predicate-based submission. Standard predicate reliance. This clearance follows a standard predicate-based equivalence path within the Cardiovascular review framework, consistent with the majority of Class II 510(k) submissions.

View all Zywie, Inc. devices

FDA 510(k) Submission Details - K252839

510(k) Number K252839 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received September 05, 2025
Decision Date June 18, 2026
Days to Decision 286 days
Submission Type Traditional
Review Panel Cardiovascular (CV)
Summary Summary PDF
Third-party Review No - reviewed directly by FDA
Combination Product No
PCCP Authorized No
Regulatory Context
Review time vs. panel average
161d slower than avg
Panel avg: 125d · This submission: 286d
Pathway characteristics
Predicate-based equivalence.

MWJ Device Classification - Class 2, Special Controls

Product Code MWJ Electrocardiograph, Ambulatory (without Analysis)
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 870.2800
What this classification means

Class II devices require demonstration of substantial equivalence to a legally marketed predicate device. Clinical trial data may be submitted as supporting evidence to strengthen the substantial equivalence argument. Most Cardiovascular devices follow this clearance model.

Clinical Evidence

ClinicalTrials.gov
NCT07188129 Completed Interventional Industry-sponsored

Evaluation of a Test Algorithm for Use to Analyze ECG Data Collected From a Test Device of a 24-hour Simulated Use Period

Assessing Compatibility of the ZywieAI Algorithm to Analyze ECG Data Collected From the Zywiez3 Sensor and Adhesive Over a 24-hour Period

153
Patients (actual)
1
Site
Diagnostic
Purpose
Open label
Masking
Condition studied Atrial Fibrillation (AF); Tachycardia; Bradycardia; PVC - Premature Ventricular Contraction; Premature Atrial Contraction
Study design Single group
Eligibility All sexes · 18 Years+
Principal investigator Christopher M Beausoleil, B.S.
Sponsor Zywie, Inc. (industry)
Started 2025-01-20 → Primary completion 2025-05-06 → Completed 2025-06-11
Primary outcome
Demonstration that the ZywieAI analysis algorithm can be used to analyze ECG data collected from ZywieZ3 devices with non-traditional lead placement over a 24-hour simulated use period by human subjects
Study completed - no results published. This trial concluded in 2025 but has not posted results to ClinicalTrials.gov. Completed studies without public results are common in industry-sponsored device trials; the data may be referenced in the 510(k) Summary PDF or remain unpublished. Individual participant data will not be shared.
View full study on ClinicalTrials.gov

Regulatory Peers - MWJ Electrocardiograph, Ambulatory (without Analysis)

All 59
Devices cleared under the same product code (MWJ) and FDA review panel - the closest regulatory comparables to K252839.
Peerbridge COR MDx (Cor MDx)
K253529 · Peerbridge Health, Inc. · Sep 2026
medilogFD
K253562 · Schiller AG · Aug 2026
mobiCARE Cardiac Monitoring System (mobiCARE-MC200M, mobiCARE-MC200ML, mobiCARE-MC200M7, mobiCARE-MC200ML7)
K253384 · Seers Technology Co., Ltd. · Jun 2026
HeartBeam AIMIGo(TM) System
K231424 · Heartbeam, Inc. · Dec 2024
ASSURE Wearable ECG
K233864 · Kestra Medical Technologies, Inc. · May 2024
Eclipse MINI Model 98900
K212317 · Spacelabs Healthcare, Ltd. · Nov 2022