Patent ID: 6052614
Filing Date: 2000-04-18
Classification: A61B,Y10S

Abstract:
An electrocardiograph (""ECG"") sensor and sensor control system for use with magnetic resonance imaging machines (""MRI""), to minimize artifacts in both the MRI and ECG signals comprising:a) an ECG electronics sensor module which generates an output signal in response to a patient's ECG including at least one RF filter, a lead select network coupled to said RF filter, an amplifier coupled to said lead select network, a slew rate filter coupled to said amplifier, a pulse width modulator and a fiber optic transmitter coupled to said slew rate filter, a status encode circuit having an output and at least one input, said output of said status encode circuit coupled to said amplifier, a first input of said status encode circuit coupled to the output of said amplifier, a lead select decoder having an input and an output, said output of said lead select decoder connected to both said lead select network and to a second input of said status encode circuit, a battery power supply connected to a third input of said status encode circuit, and a fiber optic receiver connected to said battery power supply and said input of said lead select decoder;b) a Faraday shield surrounding said ECG electronics sensor module;c) at least three electrodes;d) at least three high resistant leads for coupling each of said electrodes and said RF filter;e) an ECG monitor having a fiber optic receiver and transmitter, a display and a control means for controlling and processing information received from said ECG electronics sensor module; andf) at least one first fiber optic cable coupling said fiber optic transmitter of said ECG electronic sensor module and said fiber optic receiver of said ECG monitor and at least one second fiber optic cable coupling said fiber optic transmitter of said ECG monitor to said fiber optic receiver of said ECG electronic sensor module.