公开(公告)号：US20210252291A1

公开(公告)日：2021-08-19

申请号：US16790443

申请日：2020-02-13

Applicant: Advanced Neuromodulation Systems, Inc.

Inventor： Daran DeShazo ,  Steven Boor ,  Gavin L Rade

IPC: A61N1/36 ,  A61N1/39 ,  A61N1/05 ,  A61N1/362 ,  A61B5/04 ,  A61N1/02 ,  A61N2/00 ,  A61B18/14 ,  A61B18/00

Abstract: An implantable medical device (IMD) includes multiple stimulation engines (SEs) for independently stimulating respective electrode sets of a lead system. A voltage multiplier (VM) is configured to generate an adjustable target voltage at an output node. Each stimulation engine includes first switching circuitry to switchably connect an anodic node of the SE to the VM output node and second switching circuitry to switchably connect a cathodic node of the SE to a current sink circuit. Discharge switching circuitry may be disposed between the anodic and cathodic nodes of each SE. A selector and associated digital control logic block are operative to generate control signals for independently controlling respective SEs such that each SE may be activated to stimulate or discharge a corresponding select set of electrodes independently from or in concert with remaining SEs.

公开(公告)号：US11839760B2

公开(公告)日：2023-12-12

申请号：US17720239

申请日：2022-04-13

Applicant: ADVANCED NEUROMODULATION SYSTEMS, INC.

Inventor： Steven Boor ,  Daran DeShazo ,  Gavin L Rade

IPC: A61N1/08 ,  H02M3/07 ,  A61N1/36 ,  H02M1/44

CPC classification number: A61N1/086 ,  A61N1/36125 ,  A61N1/36157 ,  H02M1/44 ,  H02M3/07

Abstract: A system and method are provided that include a power supply having positive and negative terminals. The negative terminal defines a reference ground. First and second electrodes are positioned within a patient and configured to be located proximate to tissue of interest that is associated with a target region. A control circuit is configured to control delivery of current for a therapy between the first and second electrodes. A current regulator (CR) circuit is connected to, and configured to control current flow through, at least the first electrode during delivery of the therapy under direction of the control circuit. A floating power supply is connected across power supply terminals of the CR circuit. The CR circuit and floating power supply are coupled to a floating ground node that is electrically separate from the reference ground.