The device was flushed on the back table and all components including the apex holder knob were in the appropriate positions.The device was brought to the surgical table and inserted into the patient's aorta via the right femoral artery.The device was advanced to the desired position in step 1 and unsheathed in step 2 as intended.Dr.Arnaoutakis then twisted the apex holder release (#3) to unlock and pulled it back, but the proximal clasp did not retract or release.He tried to retract it (#3) several more times, but it wouldn't go all the way back and the proximal clasp still did not release.Then dr.Back tried some more times, and then it did retract all the way and the proximal end was released.The remainder of the steps and procedure proceeded as normal.The incisions were closed, and the operation ended with successful lesion exclusion.The patient was extubated in the room, awake, and following commands moving all extremities.Patient outcome - "the device was ultimately completely deployed as intended with successful treatment, and there was no negative outcome/patient injury due to this event.".
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