High density mapping and ablation catheter

A high density mapping and ablation catheter includes a tip electrode positioned at its distal end and a plurality of electrodes (e.g., ring electrodes, ring-segment electrodes, spot electrodes, and/or printed traces) disposed proximally of the tip electrode within the distal region. A plurality of conductors extending through the elongate catheter body to electrically connect the tip electrode and other electrodes to a source of ablation energy, an electrophysiology mapping device, and/or a programmable electric stimulator. A switching circuit can be employed, for example to enable a practitioner to selectively activate certain electrodes for ablation, for electrophysiological mapping, for pacing, or to deactivate certain electrodes entirely. 种高密度标测和消融导管包括位于其远端的尖端电极和设置在远侧区域内的尖端电极近侧的多个电极(例如，环形电极、环形分段电极、点电极和/或印刷迹线)。多个导体延伸通过细长导管主体以将尖端电极和其他电极电连接至消融能量源、电生理标测装置和/或可编程电刺激器。可以使用开关电路以例如使得医生选择性地激活某些电极以用于消融、用于电生理标测、用于起搏，或者使某些电极完全失效。