MAUDE Adverse Event Report: BOSTON SCIENTIFIC CORPORATION LUX-Dx II; Insertable Cardiac Monitor

Model Number	M302
Medical Device Problem Code	Premature Discharge of Battery (1057)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	08/05/2026
Type of Reportable Event	Serious Injury
Event or Problem Description
It was reported that an insertable cardiac monitor (icm) experienced premature battery depletion, with the device reaching replacement criteria after approximately 18 months, which is shorter than the expected device longevity.It was reported that the patient was wearing a magnet around the neck during the implant period.Technical services discussed that prolonged exposure to a magnet can place the icm into a high-power interrogation state, resulting in increased battery consumption and potentially reduced battery longevity.Based on the available information, chronic magnet exposure is considered a likely contributing factor to the shortened battery longevity; however, a direct causal relationship could not be definitively confirmed.The icm was explanted and replaced with a new icm of the same model.The icm returned for analysis.No additional adverse patient effects were reported.

• Brand Name: LUX-Dx II
• Common Device Name: Insertable Cardiac Monitor
• Manufacturer (Section D): BOSTON SCIENTIFIC CORPORATION; 4100 hamline avenue north; saint paul MN 55112
• Manufacturer (Section G): Boston Scientific Corporation; cashel road; clonmel, E91 T 862; EI E91 T862
• Manufacturer Contact: mark mischke ; 4100 hamline avenue north; saint paul, MN 55112 ; +1(612)875-7234
• MDR Report Key: 50566377
• Report Number: 2124215-2026-45990
• Device Sequence Number: 21346457
• Product Code: MXD
• UDI-Device Identifier: 00802526620713
• Combination Product (Y/N): N
• Initial Reporter State: MS
• Initial Reporter Country: US
• PMA/510(K) Number: K231328
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2025
• Device Explanted Year: 2026
• Reporter Type: Manufacturer
• Report Source: Health Professional
• Initial Reporter Occupation: Physician
• Type of Report: Initial
• Report Date (Section B): 09/02/2026

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Is this an Adverse Event Report?: Yes
• Is this a Product Problem Report?: Yes
• Operator of Device: Lay User/Patient
• Device Expiration Date: 06/19/2026
• Device Model Number: M302
• Device Catalogue Number: M302
• Device Lot Number: 113235
• Was Device Available for Evaluation?: Yes
• Date Returned to Manufacturer: 08/11/2026
• Is the Reporter a Health Professional?: Yes
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 08/05/2026
• Initial Report FDA Received Date: 09/02/2026
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 01/23/2025
• Is the Device Labeled for Single Use? (Y/N): Yes
• Is This a Single-Use Device that was Reprocessed and Reused on a Patient? (Y/N): No
• Usage of Device: Initial
• Patient Sequence Number: 1
• Outcome Attributed to Adverse Event: Hospitalization; Required Intervention
• Patient Age: 66 YR
• Patient Sex: Male