Upon receipt, the lead was found cut approximately 11.5 cm distal to the is-1 connector pin.A proximal and a distal lead fragment were received and subjected to an extensive analysis.The inspection of the returned lead fragments revealed a damaged insulation approximately 38 cm proximal to the lead tip.In that section, the lead body was found squeezed and deformed.The inner conductor coil was found fractured as mentioned in the complaint description.Based on the characteristics as well as the location of the damage, it is reasonable to assume that the lead had been subject to excessive mechanical forces as the result of clavicular first rib entrapment.The analysis of the available fragments did not reveal any sign of a material or manufacturing problem.Biotronik will monitor closely if complaints received in future point towards a common root cause.For this reason we encourage close dialogue between clinicians and our product experts in order to explore all options to minimize any such occurrences in future.
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