Manufacturers ref# (b)(4).Occupation: manager.Device marketed under pma/510(k): k211875.Summary of investigational findings: the physician stated the filter jumped out of the sheath.The physician did not feel the tactile bump on the delivery system that should have alerted to pause the advancement.The filter was attempted to be resheathed, but the secondary legs were bent pointing toward the patient's head.The physician then tried to retrieve it but could not get the clover snare to capture the hook.The physician used forceps to grasp the filter and advance a 16 fr sheath over the filter to retrieve it.As the sheath covered the secondary legs, the secondary legs straightened out to normal position.The forceps was used to release the filter and the physician deployed the filter successfully.According to the instruction for use once the femoral cup is past the tip of the introducer sheath, the secondary legs of the filter are expanded.Attempting to retract the filter at this point of the deployment sequence could damage the secondary legs or caval wall.The device was not returned for evaluation and no images from the procedure were available.With the information provided it is unknown what caused the filter to go through the introducer sheath.However, it is possible that the filter was not aligned with the introducer sheath tip which caused the filter to be placed outside in the ivc and the physician to feel the filter ¿jumped out¿ of the sheath but this is purely speculations.No evidence to suggest that the product was not manufactured according to specifications.Cook medical will continue to monitor for similar events.This report is required by the fda under 21cfr 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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