US 12,403,324 B2
Wearable medical device (WMD) implementing adaptive techniques to save power
David P. Finch, Bothell, WA (US); Erick M. Roane, Bellevue, WA (US); Kenneth F. Cowan, Kirkland, WA (US); Derek J. Valleroy, Seattle, WA (US); and Gregory T. Kavounas, Bellevue, WA (US)
Assigned to West Affum Holdings DAC, Dublin (IE)
Filed by West Affum Holdings DAC, Dublin (IE)
Filed on Feb. 28, 2022, as Appl. No. 17/682,245.
Application 17/682,245 is a continuation of application No. 16/453,488, filed on Jun. 26, 2019, granted, now 11,260,238.
Prior Publication US 2022/0296909 A1, Sep. 22, 2022
Int. Cl. A61B 5/364 (2021.01); A61B 5/024 (2006.01); A61B 5/282 (2021.01); A61B 5/308 (2021.01); A61N 1/04 (2006.01); A61N 1/39 (2006.01)
CPC A61N 1/3987 (2013.01) [A61B 5/024 (2013.01); A61B 5/282 (2021.01); A61B 5/308 (2021.01); A61B 5/364 (2021.01); A61N 1/0484 (2013.01); A61N 1/3993 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A wearable medical device to monitor a heart rhythm of a patient, comprising:
a support structure to be worn by the patient;
a plurality of electrocardiography (ECG) electrodes coupled to the support structure and arranged to contact the patient's skin when the patient is wearing the support structure; and
a processor configured with:
a first mode to perform a first arrhythmia detection analysis using ECG data of one or more ECG channels derived from output signals of the plurality of ECG electrodes; and
a second mode to perform a second arrhythmia detection analysis using ECG data of two or more ECG channels derived from output signals of the plurality of ECG electrodes;
wherein performing the first arrhythmia detection analysis dissipates less power than performing the second arrhythmia detection analysis; and
wherein the ECG data is sensed at a lower fidelity in the first mode, and the ECG data is sensed at a higher fidelity in the second mode, wherein the lower fidelity comprises using fewer of the ECG channels, a lower gain level, and a lower data rate for continuous ECG analysis, and the higher fidelity comprises using more of the ECG channels, a higher gain level, and a higher data rate for complex ECG analysis.