INTRA-BODY MEDICAL DEVICES FOR USE IN MRI ENVIRONMENTS

摘要

An MRI-compatible intrabody device includes an elongated flexible shaft having a distal end portion, an opposite proximal end portion, an electrical connector interface configured to be in electrical communication with an MRI scanner, and a tracking coil assembly adjacent the shaft distal end portion. The tracking coil assembly includes a first spool having opposing first and second end walls and a second spool having opposing third and fourth end walls. The second spool is in end-to-end relationship with the first spool such that the second and third end walls are in adjacent, spaced-apart relationship. A tracking coil is wound around the first spool, and a coaxial cable is wound around the second spool. An outer conductor of the coaxial cable is connected to one end of the tracking coil and the inner conductor of the coaxial cable is connected to an opposite end of the tracking coil.

主权项

1. A tracking coil assembly for use with an intrabody medical device, comprising:
a first spool having opposing first and second end walls; a tracking coil wound around the first spool between the opposing first and second end walls; a second spool having opposing third and fourth end walls, wherein the second spool is in end-to-end relationship with the first spool such that the second and third end walls are in adjacent, spaced-apart relationship; and a coaxial cable wound around the second spool, wherein an outer conductor of the coaxial cable is connected to one end of the tracking coil and wherein an inner conductor of the coaxial cable is connected to an opposite end of the tracking coil.