The way the doctors pump your stomach for alcohol poisoning is the stick a long tube down your throat and into your stomach.
The tube is attached to a syringe like tool which they use which creates suction to draw the alcohol out of your stomach and into a bag.
Instruments used when performing a gastric lavage, commonly referred to as "pumping the stomach."
Plastic tubing is inserted into the patient's mouth, down the throat and into the stomach.
Syringe removes foreign material from the stomach.
Below is a picture of a stomach pump tool that doctors use to pump your stomach with.