A continuous infusion pain pump is a device that sends numbing medicine to decrease pain. It is usually used to reduce pain in the area where you had surgery.
A small tube (catheter) may be placed into or near where the doctor cut your skin (your incision). Or the doctor may place the catheter near a group of nerves that supply feeling to the area where you had surgery. The tube connects to the pump outside your body, and a small pouch inside the pump holds the medicine. The pump is set to give you a steady flow of medicine for several days after surgery to help manage your pain.
This type of pump is small and portable. You can clip it to the waistband of your pants. Or you can carry it in a small handbag.