ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,420,107, issued on Sept. 23, was assigned to ZOLL Medical Corp. (Chelmsford, Mass.).

"Wearable cardiac device to monitor physiological response to activity" was invented by Kent Volosin (Mars, Pa.) and Ramu Perumal (Gibsonia, Pa.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A patient-worn ambulatory cardiac monitoring device for monitoring a patient during a patient activity includes at least one physiological sensor configured to detect signals indicative of cardiac activity, an activity sensor and associated circuitry configured to monitor patient movements, and a vibrational sensor configured to monitor a cardio-vibrational signal of the patient. ...