RELIANCE 4-FRONT Adverse Events: FDA MAUDE Data

BOSTON SCIENTIFIC CORPORATION · Permanent Defibrillator Electrode (Lead) · First cleared Aug 1993

Total Reports

3,585

Reports (30d)

101

Active Signals

0

Open Recalls

4

Monthly Report Volume
Event Type Breakdown

Most commonly reported problems

1

Lead Revision Due to Infection

explanted right, infection additional, revision infection, additional adverse, lead revision

20

reports

2

Gradual Rise in Shock Impedance

impedance measurements, measurements, remains service, shock impedance, ohms

19

reports

3

Lead Replaced for Performance Anomaly

reported right, product performance, successfully, additional adverse, new lead

16

reports

4

CRT Lead High Shock Impedance Alert

resynchronization, cardiac resynchronization, crt, therapy, service

10

reports

5

ICD High Shock Impedance Measurements

measurements, icd, shock, shock impedance, range shock

10

reports

6

Right Lead Revision for Infection

explanted right, infection additional, revision infection, additional adverse, lead revision

9

reports

Problem groupings are generated by Claripulse from report narrative text. They summarize what reporters wrote, not adjudicated root cause.

FDA recalls for this device

Class I

Jul 24, 2025 · Open, Classified

Affected lead models may experience gradually rising LVSI measurements in association with calcification of the defibrillation lead coils. The issue may lead to early lead replacement. Most serious harm is death or need for cardiac resuscitation.

Class I

Jul 24, 2025 · Open, Classified

Affected lead models may experience gradually rising LVSI measurements in association with calcification of the defibrillation lead coils. The issue may lead to early lead replacement. Most serious harm is death or need for cardiac resuscitation.

Class II

Sep 30, 2022 · Open, Classified

There is an incorrect manufacturing date/timestamp within the software which causes an inaccurate display of battery capacity.

Class II

Sep 30, 2022 · Open, Classified

There is an incorrect manufacturing date/timestamp within the software which causes an inaccurate display of battery capacity.

Want automated safety signal detection?

Claripulse monitors these devices weekly and detects anomalies using 6 statistical methods — spike, trend, changepoint, peer-outlier, and more.

Get Early Access
Disclaimer: This system analyzes publicly available FDA MAUDE data. It does NOT provide medical advice. MAUDE data is de-identified. Do not attempt re-identification. Report counts may differ from the FDA's MAUDE search due to processing cadence and deduplication. Data is updated weekly.