Description of event according to initial reporter: the sheath system was advanced via the right femoral vein and placed below the renal veins.When the filter introducer was advanced through the sheath, it noted that 1-2cm of the distal filter was expanded.After correct position has been verified, the physician stabilized the position of the filter introducer and attempted to withdraw the 8.5f sheath.However, strong resistance was felt due to the filter stuck inside the sheath and the sheath would not be moved.The partially expanded filter was successfully pulled back into the sheath and the whole system was removed.After hemostasis of the right femoral vein, the left femoral vein was punctured and filter placement was performed using another device without problems.Patient outcome: no adverse effect to the patient.
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