Patent ID: 9456761
Filing Date: 2016-10-04
CPC Classification: A61B

Claim Text:
1. An apparatus for coupling physiological signals acquired from a patient to a physiological processing circuit in a patient monitor, the apparatus comprising: a plurality of first ECG signal conductors each first ECG signal conductor having an input end configured to be coupled to a respective one of a plurality of lead wires, each lead wire being configured to connect to a respective one of a plurality of physiological signal sensors, and each of said plurality of first ECG signal conductors having an output end configured to be coupled to a respective one of a plurality of second ECG signal conductors configured to connect with the patient monitor; a plurality of electromagnetic shields, each of the plurality of shields being configured and disposed to electromagnetically shield a corresponding one of the first ECG signal conductors; a common shield configured to shield all of the plurality of second ECG signal conductors; a plurality of ohmic resistors configured to resistively interconnect the plurality of electromagnetic shields with each other and with the common shield, the plurality of ohmic resistors being connected with the electromagnetic shields such that all of the electromagnetic shields are resistively interconnected such that currents flowing from any one of the electromagnetic shields to any other of the electromagnetic shields are attenuated by at least one of the ohmic resistors and the plurality of ohmic resistors being connected between each of the electromagnetic shields and the common shield such that currents flowing between any one of the electromagnetic shields and the common shield are attenuated by at least one of the ohmic resistors.