Abstract: A catheter assembly is provided. The catheter assembly includes a tip electrode array including at least one tip electrode, the tip electrode array located at a distal end of the catheter assembly, and a mini electrode array including a plurality of mini electrodes, the mini electrode array positioned proximal of the tip electrode array, wherein each of the at least one tip electrode and each of the plurality of mini electrodes are configured to be activated independent of one another for mapping applications, and wherein at least some of the at least one tip electrode and the plurality of mini electrodes are configured to be activated in unison for ablation applications.

Abstract: The invention provides an apparatus and method for providing an overhead frame structure having two side frame members each with at least one protrusion and one or more cross members coupling the side frame members through interconnection with the protrusions. Each protrusion has a corrugated configuration. Each cross member has end portions each having a wall with corrugated configuration. Each wall is adapted to engage one of the protrusions. The end portions in each cross member are adapted to receive one of the pairs of opposing protrusions therein. The cross members are coupled between the side frame members with the engagement and subsequent securing of the protrusions to the end portions of the cross members.