NON-INVASIVE BASKET STYLE CARDIAC MAPPING CATHETER HAVING METAL TWO-COMPONENT DISTAL END FOR DETECTION OF CARDIAC RHYTHM DISORDER

摘要

PROBLEM TO BE SOLVED: To provide a system for sensing multiple local electric voltages from endocardial surface of a heart.SOLUTION: The system includes: a first elongate tubular member 20 having a lumen, a proximal end 20A and a distal end 20B; and a basket assembly 12. The basket assembly 12 includes: a plurality of flexible splines 14 for guiding a plurality of exposed electrodes; an anchor 18 for securably affixing the proximal portions of the splines 14; and a filament-wrapped distal tip comprising an encapsulant and a filament for securably affixing the distal portions of the splines 14 in a predetermined angular relationship at the distal tip. The anchor 18 is affixed to the distal end 20B of the first elongate tubular member 20, the splines 14 comprise a superelastic material, and the basket assembly 12 has a radially expanded non-cylindrical shape.