Device was not returned for investigation.(b)(4).Sorin group (b)(4) manufactures the revolution centrifugal blood pump.The incident occurred in (b)(6).Per exemption number (b)(4), sorin group (b)(4) is submitting the report for both sorin (b)(4) (manufacturer) and (b)(4) (importer).Though the involved device was initially thought to be available for return, this was not the case.Therefore, the issue was evaluated based on previously investigated cases for similar issues.Based on these investigations, sorin group (b)(4) believes that the crack may be ascribed to rough handling during transportation, in combination with residual material stress from processing operations.A review of the dhr did not identify any deviations or non-conformities relevant to the reported issue.The product was released in compliance with the specifications.Device not available for return.
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