The patient was undergoing a thrombectomy procedure in the right middle cerebral artery (mca) using a penumbra system 3max reperfusion catheter (3maxc), a neuron max 6f 088 long sheath (neuron max), a penumbra system red 72 reperfusion catheter (red72) and a non-penumbra guidewire.It was noted that the patient¿s anatomy was tortuous.During the procedure, the physician completed two passes using the red72.During the third pass, the physician advanced the red72 to the face of the clot with aspiration and then removed the 3maxc.Upon removal of the 3maxc, it was noticed that the distal part of the 3maxc was missing.The red72 appeared to be kinked on the fluoroscopy.Therefore, the red72 was also removed from the patient.The broken piece of the 3maxc was found inside the red72; however, the red72 was not damaged.Subsequently, the physician used a syringe to remove the broken piece of 3maxc on the back table.Then, the physician completed two additional passes using a new 3maxc, the same red72 and the same neuron max.The thrombectomy was not successful due to low tici score; however, this was not due to any penumbra devices used in the procedure.There was no report of an adverse effect to the patient.
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Evaluation of the returned 3maxc confirmed that the catheter was fractured.Evaluation revealed stretching at the fractured location.If the 3maxc is forcefully retracted against resistance, damage such as stretching and subsequent fracture may occur.The root cause of resistance could not be determined.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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