US Patent 10362991 Convertible basket catheter

This disclosure is directed to a catheter having a basket-shaped electrode assembly at the distal end of the catheter body formed from a plurality of spines with electrodes. The basket-shaped electrode assembly structural elements at the proximal and distal ends. The structural elements may maintain the spines in a desired spatial relationship with each other and/or may couple the distal ends of the spines to a pulling member. The basket-shaped electrode assembly has expanded arrangement in which the spines bow outwards and a collapsed arrangement in which the spines are arranged generally along a longitudinal axis of the catheter body.