Device eval by manufacturer: the device was returned to boston scientific and analyzed by a bsc quality engineer.Upon visual inspection, it was found that the distal filter slider (#3) detached with a portion of the inner member still attached to it that caused the inability to sheath and un-sheath the distal filter.Additionally, visible inner member buckling/detached under the rear handle shells was noted.The proximal filter was returned un-sheathed and with a severe damage on it (filter torn).During x-ray and microscopic inspections, the inner member buckling/detached under the rear handle shells was confirmed.
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Reportable based on returned device analysis completed on (b)(6) 2020.It was reported that during the initial deployment and recapture to reposition the distal filter #3, the #3 hypo-tube detached from the rear of the handle.The distal filter was fully recaptured into the catheter tip and the procedure was completed with the proximal filter only.However, the returned device analysis revealed the proximal filter was torn.
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