CATHETER WITH AN ELECTROMAGNETIC GUIDANCE SENSOR

摘要

The present invention relates to an electrophysiology catheter (102) (an electrode catheter) having an electromagnetic sensor (18) designed internally into the top portion (20). The catheter is a size 7 French or 8 French of metal braided construction with preferably three lumens (22, 24, 26). The catheter (102) has a deflectable tip (20) utilizing an offset lumen with a puller wire, a non-compressible coil in the body section, and a compressible TEFLON sheath (39) in the tip section. The electromagnetic sensor (18) is mounted internally in the catheter tip (20) by a combination of a hole drilled (36) in the three lumen tip, and a hollow bridging that covers the electromagnetic sensor (18) and connects the tip electrode (12) to the catheter shaft (102). The tip electrode (12) is secured to the end of the bridging tube (90) by an etched TEFLON ring which mates the electrode stem to the inside of the ring.