US 12,446,818 B2
Techniques for identifying and analyzing events-of-interest indicated by physiological parameters
Fred W. Chapman, Newcastle, WA (US); and Robert G. Walker, Seattle, WA (US)
Assigned to Stryker Corporation, Portage, MI (US)
Filed by Stryker Corporation, Kalamazoo, MI (US)
Filed on Sep. 20, 2022, as Appl. No. 17/949,080.
Claims priority of provisional application 63/246,734, filed on Sep. 21, 2021.
Prior Publication US 2023/0090464 A1, Mar. 23, 2023
Int. Cl. A61B 5/33 (2021.01); A61B 5/00 (2006.01); A61B 5/361 (2021.01); A61B 5/363 (2021.01); A61N 1/39 (2006.01)
CPC A61B 5/33 (2021.01) [A61B 5/361 (2021.01); A61B 5/363 (2021.01); A61B 5/742 (2013.01); A61N 1/39044 (2017.08); A61N 1/395 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A monitor-defibrillator, comprising:
a detection circuit configured to detect an electrocardiogram (ECG) of an individual;
a discharge circuit configured to output a first electrical shock to the individual at a first time and to output a second electrical shock to the individual at a second time, the second time being after the first time;
a display configured to output a report summarizing the first electrical shock, the first time, the second electrical shock, and the second time; and
a processor configured to:
identify a pre-shock segment of the ECG, the pre-shock segment being before the first time;
determine that the pre-shock segment of the ECG is indicative of a shockable arrhythmia, the shockable arrhythmia comprising ventricular fibrillation (VF) or ventricular tachycardia (VT);
based on determining that the pre-shock segment of the ECG is indicative of the shockable arrhythmia, cause the discharge circuit to output the first electrical shock;
identify a post-shock segment of the ECG, the post-shock segment beginning within ten seconds of the first time and ending before the second time;
determine that the post-shock segment of the ECG is indicative of the shockable arrhythmia temporarily resolving; and
in response to determining that the post-shock segment of the ECG is indicative of the shockable arrhythmia temporarily resolving, cause the discharge circuit to output the second electrical shock at the same vector as the first electrical shock.