Henry Heimlich from a heart attack in his home in Hyde Park, Cincinnati, on December 12. He was 96 years old. Henry Heimlich Henry Judah Heimlich (; February 3, 1920 – December 17, 2016) was an American thoracic surgeon and medical researcher. He is widely credited as the inventor of the Heimlich maneuver, a technique of abdominal thrusts for stopping choking, described in "Emergency Medicine" in 1974. He also invented the Micro Trach portable oxygen system for ambulatory patients and the Heimlich Chest Drain Valve, or "flutter valve", which drains blood and air out of the chest cavity. Heimlich was born in
Henry Dewar (physician) friend of the Newcastle physician John Clark, and Trotter's criticism of Clark has been given as one possible reason for the personal attacks included with the scientific and practical arguments Dewar gave. A scale or chemical slide rule mentioned by Thomas Charles Hope as "Dr. Dewar's" has been considered to be unpublished work of Henry Dewar. "An inquiry into the principles by which the importance of foreign commerce ought to be estimated" (1808) was an economic pamphlet. It was taken to be a comment on the Continental System, and a reply to William Spence. Spence's "Britain Independent of Commerce" (1807)