What is used at home as a tool for pressing CPR?

Well ... I'm not afraid of your jokes. There is a story in the history of cardiopulmonary resuscitation, which even promoted the development of a new resuscitation technology. In a small village in Italy, two old people lived a happy life. Unfortunately, her husband had a heart attack. One day, he suddenly fell in the bathroom. His wife has been trained in CPR and knows how to judge respiratory and cardiac arrest and how to perform CPR. However, CPR is a laborious activity. Because of her fat figure, it is inconvenient for the old woman to bend over. In desperation, she picked up the toilet plug in the corner to clear the drain pipe, put it on her husband's chest, and held its handle to push him. This simple and unintentional lifting has the same effect as chest compressions. Due to the correct first aid in prime time, the husband recovered his breathing and heartbeat in a very short time. Yes, it's the toilet plunger! Later, after research, it was found that the toilet plunger can form negative pressure between compressions in the chest cavity, promote blood return, and be more conducive to resuscitation, thus inventing the heart pump. The concept of active compression-decompression cardiopulmonary resuscitation (ACD- CPR) was also put forward. Of course, we don't usually use this kind of thing when we do CPR with our bare hands.