Granted Patent B2

US 12,635,953 · App. 18/508,047 · Granted May 26, 2026

Inventors: Marina Brockway (St. Paul, MN); Brian Brockway (St. Paul, MN); David Christopher Olson (New Brighton, MN); Steven D. Goedeke (New Brighton, MN); Michael C. Garrett (Northbrook, IL)

Assignee: Cardionomix, Inc.

A61B5/7217A61B5/28A61B5/33A61B5/339A61B5/346A61B5/725A61B2562/046

Abstract

Claims (17)

1 . A denoising system for denoising an ECG waveform, the system comprising:

an ECG electrode array configured to obtain ECG signals from a patient;

one or more processors configured to be communicatively coupled to the ECG electrode array, the one or more processors configured to, upon execution of stored instructions on a non-transitory computer-readable medium:

determine whether an ECG signal received from the ECG electrode array comprises transitory noise caused by application of electrical stimulation by an electrical stimulation device;

if it is determined that the ECG signal does not comprise transitory noise caused by application of electrical stimulation by the electrical stimulation device,

cause the ECG signal to be output for display on the patient monitor without modifying the ECG signal; and

if it is determined that the ECG signal comprises transitory noise caused by application of electrical stimulation by an electrical stimulation device, digitize the ECG signal using an analog-to-digital converter;

denoise the digitized ECG signal, wherein denoising the digitized ECG signal comprises removing values in memory locations corresponding to portions of the digitized ECG signal having the transitory noise and interpolating the portions of the digitized ECG signal having the transitory noise to replace the removed values with modified values based on said interpolating to reconstruct the ECG signal as a denoised ECG signal;

convert the denoised ECG signal to an analog signal using a digital-to-analog converter; and

output the denoised ECG signal for display on a patient monitor.

2 . The system of claim 1 , wherein the denoising system comprises a stimulation detection subsystem configured to make the determination of whether the ECG signal comprises the transitory noise caused by application of electrical stimulation by the electrical stimulation device.

3 . The system of claim 2 , wherein the stimulation detection subsystem is configured to make the determination based on a received blanking pulse signal indicative of application of electrical stimulation by the electrical stimulation device.

4 . The system of claim 3 , wherein the blanking pulse signal is generated by the electrical stimulation device and transmitted to the denoising system through a physical electrical connection.

5 . The system of claim 2 , wherein the stimulation detection subsystem is configured to make the determination based on characteristics of the ECG signal.

6 . The system of claim 1 , wherein the denoised ECG signal has a quality of signal reconstruction of greater than 95%.

7 . The system of claim 1 , wherein the one or more processors are further configured to refine the reconstructed ECG signal using a linear phase filter to create the denoised ECG signal, and wherein the linear phase filter comprises one or more of: a low pass filter, a band pass filter, and a notch filter.

8 . The system of claim 1 , wherein the denoising system comprises one or more switches configured to open and close based on the determination of whether the ECG signal received from the ECG electrode array comprises transitory noise.

Assignments (7)

Continuity (5)

References Cited (400)