US Patent 10010370 Magnetic control assemblies and systems therefor

Described here are devices and systems for applying an adjustable strength magnetic field to a magnetic device located within the body. In some variations, the devices may comprise a force modulation device comprising an adjustable shielding device. In other variations, the devices may comprise a force modulation device comprising a distance adjustment device. In some variations, the force modulation device may be adjusted by an automated control mechanism based on information from a sensor in the magnetic device.