Heimlich Maneuver

The Heimlich maneuver is a rapid first aid technique used for respiratory tract foreign body asphyxia. Its principle is to use the impact on the soft tissue under the abdomen diaphragm to generate upward pressure, compress the lower parts of the two lungs, and thus drive the residual air in the lungs to form an airflow. This impactful and directional airflow can move up the trachea and expel foreign objects such as food and hard lumps that block the trachea and throat, saving the person.

The unit is designed for unsupervised public use: controls are recessed or shielded, moving parts are enclosed, and the interface is operable by a child of about six with no instruction. Where a screen is used, the language can be switched without changing the hardware, and the content can be replaced on site.

The Heimlich emergency method was invented by Professor Heimlich in 1974. It is a rapid first aid technique used for respiratory foreign body asphyxia. Imagine a person's lungs as a balloon, with the trachea being the mouthpiece of the balloon. If the mouthpiece is blocked by a foreign object, you can squeeze the balloon with your hand, causing the air inside the compressed balloon to move upward and flush out the foreign object blocking the mouthpiece. This is the physics principle of the Haydn abdominal impact method.