ELECTROCARDIOGRAM NOISE REDUCTION

摘要

Methods and systems of catheterization include a flexible catheter adapted for insertion into a heart of a living subject. The catheter has a lumen for passing an electrically conductive fluid therethrough with the fluid exiting the catheter at the distal portion. The lumen is connectable to an irrigation pump to form a fluid communication therewith. A fluid reservoir connected to the lumen supplies the fluid to the catheter. Electrocardiogram circuitry is connectable to the subject for monitoring electrical activity in the heart. An electrically conductive cable diverts induced charges in the fluid from the catheter electrodes, for example by connection to an isolated ground of the electrocardiogram.

主权项

1. A catheterization system, comprising:
a flexible catheter adapted for insertion into a heart of a living subject, having a distal portion and a lumen for passing an electrolyte-containing fluid therethrough to exit the catheter at the distal portion, the lumen connectable to an irrigation pump to form a fluid communication therewith; a fluid reservoir connected to the irrigation pump for supplying the electrolyte-containing fluid to the catheter; electrocardiogram circuitry connectable to the subject for monitoring electrical activity in the heart, the electrocardiogram circuitry having an input; and an electrically conductive cable linking the electrolyte-containing fluid with the input of the electrocardiogram circuitry.