The product was not returned for evaluation.Without the return of the device, the root cause of the problem cannot be determined.The manufacturing records for this lot were reviewed and did not reveal any outstanding discrepancies, design, or quality concerns.
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The patient was undergoing a thrombectomy procedure in the right m1 segment of the middle cerebral artery (mca) using a neuron max 6f 088 long sheath (neuron max), penumbra system jet 7 reperfusion catheter (jet7), and penumbra system 3max reperfusion catheter (3maxc).During the procedure, the physician advanced the jet7 over the 3maxc and through the neuron max to the target vessel.The physician then completed three passes using the jet7.After the third pass, the jet7 was removed and flushed on the back table.After flushing, the physician noticed that the distal tip of the jet7 expanded and; therefore, the jet7 was not used for the remainder of the procedure.The procedure was completed using a non-penumbra stent retriever with the same neuron max and 3maxc.There was no report of an adverse effect to the patient.
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