?:definition
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Devices designed to be placed on a person\'s abdomen to facilitate a maneuver (known as Heimlich maneuver) intended to generate a pressure to move and expel an obstructing foreign body in that person\'s airway (i.e., to relieve choking). These devices usually include a head with a central bulge to be placed against the upper abdomen and a rod and two handles; the device is used by being pulled inward and upward to generate the desired expulsion pressure on the lungs.
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