The patient was undergoing a thrombectomy procedure in the m1 segment of the middle cerebral artery (mca) using a penumbra engine canister (canister) and penumbra engine (engine).During the procedure, the physician placed the canister in the engine and noticed that the engine was not achieving vacuum pressure.It was reported that only two of the four indicator lights on the engine were illuminated; therefore, the canister was removed.The procedure was completed using another canister and the same engine.There was no report of an adverse effect to the patient.
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Results: there was no visible damage to the canister.Conclusions: evaluation of the returned canister revealed a functional device.During the functional test, the canister was connected to a demonstration engine pump.The pump was powered on and all four indicator lights illuminated as the canister achieved vacuum pressure within specification.The root cause of the reported complaint could not be determined.The supplier performs 100% visual and functional inspection prior to shipping to penumbra.Penumbra performs packaging and label inspection upon receipt prior to shipment to customer.The manufacturing records for this lot were reviewed and did not reveal any outstanding discrepancies, design, or quality concerns.
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