Implantable medical device

摘要

An implantable medical device assembly that contains magnetic material with a saturation magnetization of at least about 0.15 Tesla and which has a direct current permeability at a static magnetic field value of 1.5 Tesla of at least 1.1. When the magnetic material and is simultaneously subjected to an alternating current electromagnetic field with a frequency of 64 megahertz and a static magnetic field of 1.5 Tesla, it has a magnetization of less than 100 electromagnetic units per cubic centimeter.