Is it ensure, insure, or assure?
1975, named for U.S. physician Henry Jay Heimlich (b. 1920).
Heimlich maneuver n.
An emergency technique used to eject an object, such as food, from the trachea of a choking person. The technique employs a firm upward thrust just below the rib cage to force air from the lungs up through the trachea, thus dislodging the obstruction.