Exemption number e2016032.(b)(4).Summary of investigational findings: only the jugular introducer was returned.The red locking mechanism was pressed, ie the system was unlocked.The filter was not returned, but investigation found the red locking mechanism as well as the blue release mechanism working as intended and therefore, the exact reason for the difficulties encountered, when attempting to release the filter cannot be determined.However, according to ifu excessive tension during deployment may prevent the filter from releasing when the release mechanism is activated.Cook medical will continue to monitor for similar events.
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