| Model Number |
399410 |
| Medical Device Problem Codes |
Inappropriate/Inadequate Shock/Stimulation (1574); Ambient Noise Problem (2877)
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| Health Effect - Clinical Code |
Shock from Patient Lead(s) (3162)
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| Date of Event |
07/15/2025
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Type of Reportable Event
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Serious Injury
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Additional Manufacturer Narrative
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Combination product: yes.
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Event or Problem Description
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This lead was explanted due to noise, causing inappropriate shocks.Should additional information become available, this file will be updated.
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Additional Manufacturer Narrative
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Combination product: yes.The device is currently not available for analysis.No conclusion can be drawn based on available information at the moment.The file is closed.The investigation will be re-opened should additional data become available.
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Additional Manufacturer Narrative
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Combination product: yes.Upon receipt, the lead under complaint was found cut 20.5 cm distal to the df4 connector pin into two fragments.An extraction aid was found on the distal fragment, it is reasonable to assume that the lead was cut during the surgery.The insulation was found rubbed through in the distal end region.Furthermore, the conductor cable was found fractured 8.5 cm proximal to the lead tip.These damages are assumed to be the root cause of the reported oversensing leading to inappropriate shocks delivery.Based on the characteristics of these damages, it is reasonable to assume that the lead had been subject to severe mechanical stress in the implanted state.Significant lead motion in the area of the tricuspid valve and interaction with atypical tissues should be taken into consideration.Furthermore, the shock coils were found deformed, which probably occurred during the extraction procedure due to tensile stress.Prior to the analysis of the device, the quality documents accompanying the manufacturing process for this device were re-investigated.All production steps were performed accordingly, and in particular the final acceptance test proved the device functions to be as specified.In conclusion, the analysis did not reveal any sign of a material or manufacturing problem.
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Search Alerts/Recalls
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