ALEXANDRIA, Va., July 16 -- United States Patent no. 12,357,534, issued on July 15, was assigned to ZOLL Medical Corp. (Chelmsford, Mass.).

"Chest compliance directed chest compressions" was invented by Gary A. Freeman (Waltham, Mass.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Among other things, in one aspect, we describe a system for assisting with cardiopulmonary resuscitation (CPR). The system includes at least one sensor; and one or more processors configured for calculating a chest compliance relationship based on data received from the at least one sensor, and determining a neutral position of chest compression based at least in part on a feature of the chest compliance relationship. The system ca...