(b)(4).Device evaluated by mfr: the device was visually examined for any shaft damage and the functionality testing of the device was completed.Functional analysis was done by completing the aspiration testing of the device.The device is tested by using a 100ml beaker of water.The devices tip is submerged in a beaker of fluid and the device is run for a period of 1 minute.The final milliliters of fluid that the beaker shows after the 1minute run time is subtracted from the starting milliliters and the final number is the total that was aspirated (100ml¿98ml = 2ml).Test results showed that this device did not perform as designed per the test procedure specification sheet withdrawing 2ml of fluid in the 1 minute time frame.Dissection of the catheter shaft showed that the aspiration lumen was occluded with a heavy clot burden which contributed to the aspiration issues.Inspection of the remainder of the device, apart from the observed damage, revealed no other damage or irregularities.The investigation conclusion is operational context as the product meets the design & manufacture specification but due to anatomical/procedural factors encountered during the procedure, performance was limited.(b)(4).
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It was reported that the device stopped aspirating.A 2.4mm jetstream® xc atherectomy catheter was selected for use for a procedure in the patient's popliteal artery.The device had been used successfully for ablation of the lesion for 3 passes, 2 with blades down and 1 with blades up, but then the it stopped aspirating on the consecutive run (at the 6 minute/25 second mark).The jetstream was still activated when this issue occurred; the device continued to pump saline, but there wasn't any aspiration.No movement was observed in the tubing and no saline was dripping into the collection bag.The catheter was removed from the patient, and the physician attempted to re-prime the device, but this did not work.Another of the same device was then used to complete the procedure.No patient complications were reported.The patients condition after the procedure was good.
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