EXTERNAL CHARGER FOR AN IMPLANTABLE MEDICAL DEVICE FOR DETERMINING POSITION AND OPTIMIZING POWER TRANSMISSION USING RESONANT FREQUENCY AS DETERMINED FROM AT LEAST ONE SENSE COIL

• Main Authors: STOUFFER THOMAS W, FREIDIN LEV, AGHASSIAN DANIEL
• Format: Patent
• Language: Chinese; English
• Published: 05.02.2019
• Subjects: ELECTROTHERAPY; HUMAN NECESSITIES; HYGIENE; MAGNETOTHERAPY; MEDICAL OR VETERINARY SCIENCE; RADIATION THERAPY; ULTRASOUND THERAPY

A charging system for an Implantable Medical Device (IMD) is disclosed having a charging coil and one or more sense coils. The charging coil and one or more sense coils are preferably housed in a charging coil assembly coupled to an electronics module by a cable. The charging coil is preferably a wire winding, while the one or more sense coils are concentric with the charging coil and preferably formed in one or more traces of a circuit board. One or more voltages induced on the one or more sense coils can be used to determine the resonant frequency of the charging coil/IMD coupled system. Thedetermined resonant frequency can then be used to determine the position of the charging coil relative to the IMD. The magnetic field produced from the charging coil may also be driven at the resonant frequency to optimize power transfer to the IMD. 公开了种用于可植入医疗设备(IMD)的充电系统，其具有充电线圈和个或多个感测线圈。充电线圈和个或多个感测线圈优选地被容纳在通过电缆耦合到电子模块的充电线圈组件中。充电线圈优选地是导线绕组，而个或多个感测线圈与充电线圈同心并且优选地在电路板的个或多个迹线中形成。在个或多个感测线圈上感应出的个或多个电压可以用于确定充电线圈/IMD耦合系统的谐振频率。