AN ECG SYSTEM FOR USE IN ECG SIGNAL MEASUREMENT OF INTRA-CARDIAC ECG USING A CATHETER

摘要

An ECG system is used in ECG signal measurement of intra-cardiac ECG using a catheter. The system includes a lead signal switch for disconnecting an amplifier input terminal from a reference point and reconnecting the input terminal to a patient limb electrode. An ECG signal processor amplifies the difference of a chest lead signal electronically connected to a catheter, and a patient limb signal provided by the reconnecting of the input terminal.