ENCAPSULATED MEDICAL DEVICE

摘要

There is provided an encapsulated medical device capable of accurately detecting a position where biological information is acquired by imaging in the biological body and the like. A circular loop antenna (23) built in an encapsulated endoscope (3) moving in the living body transmits a high-frequency signal, which is received by a plurality of antennas (11a to 11i) arranged on the living body surface. A CPU (36) sets the position and the direction of the initial state of the antenna (23) and performs estimation of the position and the direction so as to calculate newly estimated position and direction and update the position and the direction of the initial state. For the updated position and the direction, the estimation is performed similarly. This processing is repeated until the shift amount of the position updated by the estimation becomes sufficiently small. This enables an accurate position estimation.