FDA Adverse Event Malfunction Summary report: N

LIFEVEST WCD 4000 SYSTEM

MDR report key: 23336685 · Received October 20, 2025

Report

Report Number
3008642652-2025-10098
Event Type
Malfunction
Date Received
October 20, 2025
Date of Event
October 16, 2025
Report Date
October 20, 2025
Manufacturer
ZOLL MANUFACTURING CORPORATION
Product Code
MVK
UDI-DI
00855778005135
PMA / PMN Number
P010030
Product Problem
Yes
Report Source
Manufacturer report
Reporter Location
PA, US
Reporter Occupation
OTHER

Narratives

Additional Manufacturer Narrative · 0

DEVICE EVALUATION OF ELECTRODE BELT HAS BEEN COMPLETED. THE REPORTED PROBLEM (ECGS NON-FUNCTIONAL) HAS BEEN CONFIRMED. AS RECEIVED, THE BELT UNABLE TO COMPLETE AN ECG FALLOFF TEST. UPON INVESTIGATION THE ELECTRODE BELT LEAD 2- WIRE WAS BROKEN NEAR JST CONNECTOR IN THE ECG "C&D" CABLE. THE ROOT CAUSE FOR THE BROKEN WIRE COULD NOT BE POSITIVELY IDENTIFIED. THERE WAS NO ADVERSE EVENT THAT RESULTED FROM THE DAMAGED BELT.

Description of Event or Problem · 0

A US DISTRIBUTOR REPORTED THAT AN ELECTRODE BELT HAD NON-FUNCTIONAL ECGS.

Devices

Seq Brand Generic Product Code Manufacturer Model Lot UDI-DI
2284870 LIFEVEST WCD 4000 SYSTEM WEARABLE CARDIOVERTER DEFIBRILLATOR MVK ZOLL MANUFACTURING CORPORATION LIFEVEST WCD 4000 SYSTEM 00855778005135

Patients

Seq Age Sex Outcome Treatment
1 NA Unknown