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1. (WO2018204586) COREWIRE FOR MAPPING CATHETER FOR INTRAVASCULAR CATHETER SYSTEM

Pub. No.:    WO/2018/204586    International Application No.:    PCT/US2018/030802
Publication Date: Fri Nov 09 00:59:59 CET 2018 International Filing Date: Fri May 04 01:59:59 CEST 2018
IPC: A61B 5/042
Applicants: CRYTERION MEDICAL, INC.
Inventors: JUNG, Eugene, J., Jr.
SCHULTHEIS, Eric, A.
CADAVONA, Brent, D.
Title: COREWIRE FOR MAPPING CATHETER FOR INTRAVASCULAR CATHETER SYSTEM
Abstract:
A mapping catheter (230) for an intravascular catheter assembly (10) includes a corewire (454) that at least partially extends through a central lumen (223). The corewire (454) includes a proximal core (464) and a distal core (466). The proximal core (454) and the distal core (466) are secured to one another at a core junction (468). The proximal core (464) and the distal core (466) can be formed from materials so that the proximal core (464) has a stiffness that is greater than a stiffness of the distal core (466). A ratio of the stiffness of the proximal core (464) to a stiffness of the distal core (466) can be at least approximately 1.5:1, 2:1, 2.5:1, or 3:1, or approximately 30:1 1. The proximal core (464) can be formed from stainless steel and the distal core (466) can be formed from nickel titanium. The proximal core (464) and the distal core (466) can be welded to one another at the core junction (468). The corewire (454) can include a linear or helical groove (968) that can retain a conductor array (980A, 980E).