The patient was undergoing a thrombectomy procedure in the m1 segment of the middle cerebral artery (mca) using a penumbra system jet7 reperfusion catheter (jet7), a penumbra system 3max reperfusion catheter (3maxc), a non-penumbra guide catheter, and a guidewire.It was noted that patient anatomy was tortuous.During the procedure, the physician used a 3maxc, guidewire and guide catheter to bring the jet7 to the target vessel.Next, the physician completed two passes using the jet7.Afterwards, the jet7 was removed and while flushing the jet7 on the back table, it was noticed that approximately three centimeters from the distal tip of the jet7 was damaged.The procedure was completed using a new jet7, the same guide catheter and a stent retriever.There was no report of an adverse effect to the patient.
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Evaluation of the returned jet7 revealed that the catheter was stretched.If the jet7 is forcefully retracted against resistance, damage such as stretching may occur.Further evaluation of the returned jet7 revealed multiple ovalization and kinks throughout the catheter shaft and an ovalized distal tip.This damage was incidental to the reported complaint and likely occurred during packaging of the device for return.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.
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