Patients with hydrocephalus usually require shunt surgery, among which the most common is the ventriculoperitoneal shunt. The shunt tube used in this surgery typically features a reservoir, often referred to by patients as a "water basket". Patients are frequently required to press this reservoir to promote the excess cerebral spinal fluid to flow through the shunt tube into the abdominal cavity, where it is absorbed by the omentum. If the reservoir is not pressed, the shunt tube may become blocked, potentially requiring the surgery to be performed again.