公开(公告)号：US20220320890A1

公开(公告)日：2022-10-06

申请号：US17410796

申请日：2021-08-24

Applicant: Advanced Neuromodulation Systems, Inc.

Inventor： Hongxuan Zhang ,  Li Sun ,  Luis Ortiz-Hernandez

IPC: H02J7/00 ,  H02J50/12 ,  H02J50/20 ,  A61N1/378

Abstract: An implantable medical device (IMD) is configured to provide stimulation therapy to a patient. The IMD includes a rechargeable battery, pulse generating circuitry powered by the rechargeable battery and an inductive coupling element including at least one inductor operative to accept radio frequency (RF) power from an external charger and generate a charging voltage. A temperature sensor is configured to measure a temperature of at least a part of the IMD and output measured temperature data. A waveform generating circuit for converting measured temperature data to a waveform signal for controlling a recharging current for the rechargeable battery. The inductive coupling element is configured to communicate the waveform signal to the external charger.

公开(公告)号：US20220226659A1

公开(公告)日：2022-07-21

申请号：US17411930

申请日：2021-08-25

Applicant: Advanced Neuromodulation Systems, Inc.

Inventor： Hongxuan Zhang ,  Li Sun ,  Luis Ortiz-Hernandez

IPC: A61N1/378 ,  A61N1/372 ,  H02J50/80 ,  H02J50/10 ,  H02J50/20 ,  H02J7/00

Abstract: An implantable medical device (IMD) includes a rechargeable battery, pulse generating circuitry, an inductive coupling element including at least one inductor operative to accept radio frequency (RF) power from an external charger and generate a charging current. A recharging circuit generates a recharge current for recharging the rechargeable battery, the recharge current being based on the charging current generated from the inductive coupling element. The recharging circuitry is operable to detect a recharging level of the rechargeable battery. A temperature sensor is configured to measure a temperature of at least a part of the IMD and output measured temperature data. A control circuit controls the charging current received at the recharging circuitry to limit the charging current based upon the recharging level and to limit the charging current for a period of time based upon the measured temperature data to communicate a temperature level to the external charger.