Patent ID: 8454596

Claim:
An electrophysiology ablation device, comprising: a catheter sleeve; an electrically conductive electrode sleeve, sheathed inside the catheter sleeve and axially moveable relative to the catheter sleeve; a guiding ball sleeve, sheathed inside the electrode sleeve and axially moveable relative to the electrode sleeve; a central rod, sheathed inside the guiding ball sleeve and axially moveable relative to the guiding ball sleeve; an electrically conductive ablation electrode, connected with one end thereof to a front end of the electrode sleeve and with another end thereof to the guiding ball sleeve, and so configured that, when the two ends thereof are stretched towards directions away from each other, a portion between the two ends is formed into a strip shape capable of being received inside the catheter sleeve, and when the two ends thereof are retracted towards directions approaching each other, the portion between the two ends is radially deployed into a meshed disk capable of abutting against the orifice of a pulmonary vein; and a guiding ball, connected with one end thereof to a front end of the guiding ball sleeve and with another end thereof to the central rod, and so configured that, when the two ends thereof are stretched towards directions away from each other, a portion between the two ends is formed into a strip shape capable of being received inside the catheter sleeve; characterized in that the guiding ball is so configured that, when the two ends thereof are retracted towards directions approaching each other, the portion between the two ends is radially deployed into a meshed spherical shape with its center being disposed on a central axis of the disk ablation electrode, the guiding ball coated with an anticoagulation coating; a diameter of the spherical shape upon radical deployment of the guiding ball is substantially equal to a diameter of the pulmonary vein; wherein, in use, when the catheter reaches the left atrium, the guiding ball and the ablation electrode or the ablation electrode and the guiding ball can be sequentially deployed through adjustment of the relative positions of the electrode sleeve, the guiding ball sleeve and the central rod; and wherein, in use, since the guiding ball is of a spherical shape and the spherical center is located on the central axis of the disk ablation electrode, the guiding ball can easily slide into the orifice of the pulmonary vein on contact with a peripheral area of the orifice of the pulmonary vein, so as to guide the electrophysiology catheter and the ablation electrode.