On (b)(4), a user medwatch 3500a was received.This medwatch form did contain new information regarding the patient event, inclusive of the fact that the pump placement took place at the left femoral artery.The hospital did not return for analysis the impella cp, 14 fr introducer, or data logs for analysis.Because the product and data could not be inspected, the root cause of the cannula kink was unable to be determined.A manufacturing review was done, which revealed no other complaints leveled against this lot of pumps.The failure mode was determined to be a low risk index based on very low occurrence and moderate severity.The failure mode will be trended and tracked.Internal reference (b)(4).
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A (b)(6) year old male presented with cardiac arrest and was taken to the cardiac catheterization lab for care.The patient had a 14fr x13cm sheath placed for insertion of an impella cp pump.This was done independent of any abiomed field representative support.The abiomed representative was later told that the insertion of the impella cp was not successful, as the cp pump had kinked back upon itself after insertion.The kink was noted to have occurred in the left ventricle near the pump motor housing.The team had attempted to straighten the pump, but the flows were low, and the pump placement was aborted and the pump explanted.As the 14fr introducer had been peeled away, the team had to perform a surgical removal of the impella cp, and a surgical groin wound closure.
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