US 11,730,965 B2
Drive-sense circuit (DSC) serviced electrocardiogram (ECG) leads
John Christopher Price, Austin, TX (US); Shayne X. Short, College Station, TX (US); and Timothy W. Markison, Mesa, AZ (US)
Assigned to SIGMASENSE, LLC., Wilmington, DE (US)
Filed by SIGMASENSE, LLC., Wilmington, DE (US)
Filed on Sep. 30, 2021, as Appl. No. 17/489,958.
Application 17/489,958 is a continuation of application No. 16/891,543, filed on Jun. 3, 2020, granted, now 11,504,535.
Prior Publication US 2022/0016422 A1, Jan. 20, 2022
Int. Cl. A61N 1/362 (2006.01); A61N 1/375 (2006.01); A61N 1/37 (2006.01)
CPC A61N 1/3624 (2013.01) [A61N 1/3702 (2013.01); A61N 1/3752 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An electrocardiogram (ECG) system comprising:
a drive-sense circuit (DSC) operably coupled and configured to provide a sensor signal via an electrode that is coupled to an ECG lead and simultaneously to sense the sensor signal via the electrode to sense cardiac electrical activity of a cardiovascular system of a subject that is coupled from the subject into the ECG lead based on the ECG lead being in contact with a bodily portion of the subject, the DSC including:
a comparator configured to produce an error signal based on comparison of a reference signal to the sensor signal, wherein the reference signal is received at a first input of the comparator, and the sensor signal is received at a second input of the comparator;
a dependent current supply configured to generate the sensor signal based on the error signal and to provide the sensor signal via the electrode and the second input of the comparator; and
an analog to digital converter (ADC) configured to process the error signal to generate a digital signal that is representative of the cardiac electrical activity of the cardiovascular system of the subject that is sensed via the electrode that is coupled to the ECG lead;
memory that stores operational instructions; and
one or more processing modules operably coupled to the DSC and the memory, wherein, when enabled, the one or more processing modules is configured to execute the operational instructions to process the digital signal generated by the DSC to determine the cardiac electrical activity of the cardiovascular system of the subject that is sensed via the electrode that is coupled to the ECG lead.