Implanted date: device was not implanted.Explanted date: device was not explanted.Pma/510(k)- k130280.The actual sample was not available for the investigation.The image provided of the actual product showed a formation of glue-like clots.The blood level was considered to have been at least 400 ml or more based on the wet state of the defoamer of venous filter.A review of the device history record and product-release judgement record of the involved product code/lot# combination was conducted with no findings.Ifu sates: adequate heparinization of the blood is required to prevent it from clotting in the system.The reservoir of this product is designed to stabilize the blood storage surface to make it easier to manage, on the other hand, blood is difficult to be agitated in the reservoir.Based on this characteristic and experience, it was likely that blood with activated coagulation factors flowed into the reservoir and stayed on the surface, leading to the formation of blood clots, and afterward, when the fluid level was lowered, the formation of clots was revealed.However, with no device return the exact cause of the reported event cannot be definitively determined based on the available information.(b)(4).
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