公开(公告)号：US20200306550A1

公开(公告)日：2020-10-01

申请号：US16370357

申请日：2019-03-29

Applicant: ADVANCED NEUROMODULATION SYSTEMS, INC.

Inventor： Daran DeShazo ,  Steven Boor ,  Vidhi Desai

IPC: A61N1/372 ,  A61N1/36 ,  A61N1/05

Abstract: Embodiments are directed to an implantable medical device comprising therapeutic stimulation circuitry for controlling delivery of a medical therapy to a patient, the therapeutic stimulation circuitry having at least one lead having electrodes for delivering the medical therapy. The implantable medical device further comprises measurement circuitry for determining characteristics of the at least one lead, a processor for controlling the IMD according to executable code, and memory for storing data and executable code, wherein the executable code comprises instructions for causing the processor to receive a plurality of voltage measurements associated with the electrodes, and calculate values for an impedance model of the electrode/tissue interface.

公开(公告)号：US20200306543A1

公开(公告)日：2020-10-01

申请号：US16364975

申请日：2019-03-26

Applicant: ADVANCED NEUROMODULATION SYSTEMS, INC.

Inventor： Steven Boor ,  Daran DeShazo ,  Gavin L. Rade

IPC: A61N1/36 ,  H03K5/02 ,  A61N1/372 ,  A61N1/08

Abstract: Embodiments are directed to an implantable medical device comprising stimulation circuitry for controlling delivery of a medical therapy to a patient, a processor for controlling the IMD according to executable code, and a power source. The implantable medical device may further include current regulator circuitry comprising electrode selection circuitry that is configured to select electrodes for use during a discharge mode, and a programmable current regulator configured to provide an exponentially decreasing discharge current to the selected electrodes from the power source. A current output of a programmable current regulator may be decreased in precalculated steps to create the exponentially decreasing discharge current applied to the selected electrodes.