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A1: patient identifier: requested, not provided.A2: age & date of birth: requested, not provided.A3a: sex: requested, not provided.A4: weight: requested, not provided.A5: ethnicity: requested, not provided.A6: race: requested, not provided.D6a: implanted date: device was not implanted.D6b: explanted date: device was not explanted.G4: 510(k) number: k130520.Procedural imaging was provided.The actual device was not returned.Confirmation of the provided image: it was found that there were bubbles in the blood inside the reservoir.Although the fluid level in the reservoir was approximately 1000 ml, it was found that the venous filter was stained red with blood up to approximately 3500 ml.Based on our past experience, when air continues to mix from the venous line, bubbles overflow into the blood.We would like to report this event for your reference.Air mixed in from the venous line accumulates as bubbles in the venous filter.The bubbles that accumulate inside the venous filter were then defoamed with a defoamer.Bubbles that were not defoamed overflowed into the blood.[product structure] - inside the venous filter of the involved product is equipped with defoamer.Air that flows into the venous filter is defoamed by the defoamer.The manufacturing record and the shipping inspection record of the actual device found no anomaly.No other similar report of the product with the involved product code/lot number was found.Based on the investigation result, as a cause of bubbles inside the reservoir, from our past experience, it was likely that air continued to mix from the venous line for some factor, causing bubbles to accumulate inside the venous filter, which then overflowed from the top of venous filter.However, since the actual device was not returned, it was not possible to clarify the cause of occurrence.Terumo medical corporation (tmc) (importer) registration no.(b)(4) is submitting this report on behalf of ashitaka factory of terumo corporation (manufacturer) registration no.(b)(4).
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