CAPSULE TYPE MEDICAL DEVICE, ITS GUIDANCE SYSTEM AND GUIDANCE METHOD AND EXAMINEE INSERTION DEVICE

摘要

A propulsive movement along a longitudinal axis direction and a change in a propulsive direction are carried out easily, accurately and constantly while a guidance system is simply constituted. A capsule type medical device (201) introduced into the body of an examinee and guided by an external magnetic field, comprising an almost tubular capsule (202), a propulsion mechanism (207) for converting a rotation movement around the longitudinal axis R of the capsule (202) into a propulsive movement along the longitudinal axis R, a magnet (205) housed in the capsule (202) and provided so as to be able to switch its magnetic pole direction between a direction along the longitudinal axis R and a direction crossing that direction, and a fixing unit (212) for fixing the magnet (205) to the capsule (202) in each state of switched direction of the magnetic pole.