Patent ID: 8346343

Claim:
A medical-device magnetic guiding and position detecting system comprising: a medical device capable of being disposed in the body of a subject, the medical device including at least one magnet and a circuit including an internal coil; a first magnetic field generating unit disposed outside a subject in order to generate a first magnetic field that acts on the internal coil; a magnetic field sensor for detecting an induction magnetic field induced in the internal coil due to the first magnetic field; a position detecting means for acquiring position information of the internal coil on the basis of the detected information from the magnetic field sensor; at least one pair of opposing coils for generating a second magnetic field that acts on the at least one magnet to guide the medical device; and a plurality of coil driving units for driving the opposing coils; wherein one opposing coil of the at least one pair of opposing coils is disposed opposite to an other opposing coil of the at least one pair of opposing coils with the medical device interposed therebetween, the first magnetic field generating unit is disposed on substantially the same plane as that on which the one opposing coil is disposed or in the vicinity of the other opposing coil, the magnetic field sensor is disposed on substantially the same plane as that on which the one opposing coil is disposed or in the vicinity of the other opposing coil, and the opposing coils forming each of the at least one pair are independently driven by the respective coil driving units for preventing the other opposing coil from generating a mutual induction magnetic field which has an opposite phase to the first magnetic field which is generated by having the magnetic field which is generated from the first magnetic field generating unit pass through the one opposing coil.