Leucotome

A leucotome is a surgical instrument used for performing lobotomies. It was created by Nobel-winning Portuguese neurologist Egas Moniz in 1937.

Physician Walter Freeman used the leucotome in many of his operations in place of an icepick, his original instrument of choice, but the leucotome commonly broke off inside the patient's skull when subjected to the stresses involved in Freeman's technique. It was replaced by the orbitoclast.