Manufacturer ref# (b)(4).Summary of investigational findings: investigation is based on event description only.It was reported that the filter deployed in an unintended target site, since it did not deploy at the correct time (assuming it deployed unintendedly).Filter remained in the patient and a second filter was placed.No harm to the patient reported.No imaging was provided and no additional information could be obtained, but based on the limited information provided, it is assumed that the filter deployed prematurely in an unintended target site.However, the exact reason why the filter deployed unintendedly cannot be determined, unless the femoral introducer was unlocked and the release button was inadvertently pushed before the filter was placed in the correct position, but this is only speculation, since the femoral introducer was not returned.The ifu caution that the filter must be in the correct position before the red safety button is pushed to prepare filter release and then the release button must be pushed completely to ensure proper release of the filter.No evidence to suggest that the device was not manufactured according to specifications.Cook medical will continue to monitor for similar events.This report is required by the fda under 21 cfr part 803.This report is based on unconfirmed information submitted by others.Neither the submission of this report nor any statement made in it is intended to be an admission that any cook device is defective or malfunctioned; that a death or serious injury occurred; or that any cook device caused or contributed to; or is likely to cause or contribute to a death or serious injury if a malfunction occurred.
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