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The patient was undergoing a thrombectomy procedure in the m1 segment of the middle cerebral artery (mca) using a penumbra system jet 7 reperfusion catheter (jet7), benchmark bmx96 access system (benchmark max), and velocity delivery microcatheter (velocity).During the procedure, the physician advanced the velocity and jet7 to the face of the clot, the velocity was then removed and the physician-initiated aspiration using the jet7.After approximately two minutes, the clot was observed to be coming through the jet7.The physician then performed a contrast run resulting in thrombolysis in cerebral infarction (tici) 3.Subsequently, while retracting the jet7, the physician noticed the jet7 became stuck and could not be retracted.The physician continued to pull the jet7 and consequently, the distal end of the jet7 broke off in the m1.It was also reported that prior to removing the jet7, the physician noticed that the jet7 was slightly herniating into the external artery and the jet7 became broken at the junction of the internal and external artery.After approximately an hour and multiple attempts using a snare device, the physician was able to successfully remove the broken distal end of the jet7.The physician ended the procedure at this point.There was no report of an adverse effect to the patient.
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Evaluation of the returned jet7 confirmed that the catheter was stretched and fractured.This damage typically occurs due to forceful retraction against resistance.The complaint reported the catheter was herniating into the eca prior to retraction.This likely contributed to resistance upon retraction causing the catheter to stretch and fracture.Additional damage may have occurred during the snaring process of the fractured catheter segment.Penumbra catheters are visually inspected during in-process inspection and during quality inspection after manufacturing.The manufacturing records for this lot were reviewed and did not reveal any outstanding discrepancies, design, or quality concerns.H3 other text : placeholder.
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