Mapping and ablation catheter system with locking mechanism

Claim 1

A recording and ablation system for accessing a cardiac chamber of interest, mapping, creating linear ablation lesions in said cardiac chamber of interest comprising: (a) a hollow other catheter or sheath; (b) a said guide member for navigating a catheter or sheath in the vascular system of a patient, said guide member comprising a distal stop means for containing the distal travel of a guide member eye, threaded thereover and wherein the guide member is inserted within the catheter or sheath; (c) an inner deployable system operable within said outer catheter or sheath and including a flexible distal electroded recording and ablation device extendable to protrude and be deployed from a distal opening in said outer catheter or sheath, said electroded device being axially adjustable relative to said guide member and having at least a distal guide member eye that slidably threads over said guide member to said distal stop means such that the electroded section proximal said distal guide member eye can be adjustably arcuately flexed according to the relative motion of said distal guide member eye and said electroded section protruding from said distal opening as contained by said distal stop means to produce a desired shape to address an inner surface of said chamber of interest; (d) locking mechanism to prevent relative rotation between said electroded device and said guide member; and (e) a plurality of spaced serial electrodes carried by said electroded recording and ablation device.