A preformed catheter set for production of linear ablation lines in the left and right atrium for treatment of atrial fibrillation includes at least a first catheter including a pre-shaped distal segment having a distal linear ablation antenna and a U-shaped curve portion proximal to the distal linear ablation antenna. The compact card reader has a charging circuit and a cellular phone-connecting slot to enable the compact card reader to saveretrieve data tofrom a memory card or a cellular phone, at the same time charge the cellular phone and the cellular phone battery in order to reduce the operation cost and this also increases the speed of the data processing. Through a control user interface, an operator can move between certain modes of control even after vehicle deployment.