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It was reported that tip detachment occurred.The 90% stenosed target lesion was located in the moderately tortuous and severely calcified forearm artery anastomosis.An sv/3.5-4/4t/90 symmetry balloon catheter was advanced for dilation.During the procedure, the balloon vertically ruptured upon third inflation at 15 atmospheres for 1 minute.The device was pulled out without any problems.Subsequently, another of the same symmetry balloon was advanced, however, the balloon also ruptured during second inflation at 12 atmospheres for 1 minute.Upon removal, the device could not be removed from the 6f non-boston scientific sheath.It was separated when pulled out, and the balloon tip was retrieved using a snare.The procedure was completed with this device.No complications were reported, and the patient was in good condition after the procedure.
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