Patent ID: 9282880
Filing Date: 2016-03-15
CPC Classification: A61B,H02J

Claim Text:
1. A wireless power supply apparatus that wirelessly supplies power to a capsule-type medical device that is introduced into a body of a subject, wherein: the capsule-type medical device has a power receiving coil that receives an electric power by means of a change in a magnetic field; the wireless power supply apparatus comprising: a power transmission coil unit that is arranged on the subject, and that has three sets of power transmission coils that generate the magnetic field in directions that are orthogonal to each other, a drive section that applies an electric current to at least one set of the power transmission coils, and a coil selection section that selects the power transmission coils to apply the electric current to in order to cause the power receiving coil of the capsule-type medical device to generate an induced voltage.