Implantable medical devices (IMDs) are described. The IMDs are configured to wirelessly receive power from an electromagnetic field provided by an external charger. The IMDs include a conductive case and a header that is typically non-conductive, and which houses a three dimensional antenna structure configured to couple with the external magnetic field. Currents induced in the antenna structure are used to provide power to the IMD. The three dimensional antenna structure may be configured as a cage structure comprising a first loop antenna proximate and parallel to the front of the header, a second loop antenna proximate and parallel to the back of the header, and a third loop antenna proximate and parallel to the top of the header. The three dimensional antenna structure allows the IMD to effectively receive power from different directions, for example, if the orientation of the IMD is flipped or otherwise shifted within the patient's body.

This document discusses, among other things, systems and methods for managing pain of a subject. A system includes one or more physiological sensors configured to sense a physiological signal indicative of patient brain activity. The physiological signals may include an electroencephalography signal, a magnetoencephalography signal, or a brain-evoked potential. The system may extract from the brain activity signal one or more signal metrics indicative of strength or pattern of brain electromagnetic activity associated with pain, and generate a pain score using the one or more signal metrics. The pain score can be output to a patient or a process. The system may select an electrode configuration for pain-relief electrostimulation based on the pain score, and deliver a closed-loop pain therapy according to the selected electrode configuration.

The present disclosure provides devices, systems, and methods for spinal cord stimulation. In some exemplary embodiments, a lead is provided. In one exemplary embodiment, the lead includes a paddle and an electrode array distributed in the paddle. The electrode array includes a first column of electrodes and a second column of electrodes. The first column of electrodes and the second column of electrodes are symmetric about the midline of the paddle. The first column of electrodes includes a first electrode, a second electrode, and a third electrode. The second column of electrodes includes a fourth electrode corresponding to the first electrode, a fifth electrode corresponding to the second electrode, and a sixth electrode corresponding to the third electrode. A vertical inter-electrode distance between the first electrode and the second electrode is larger than that between the second electrode and the third electrode.

A neural stimulator system which generates stimulation from an implantable stimulator circuit which generates stimulation outputs which mimic biological signals. The user/operator can select stimulation generated from recorded waveforms, or by selecting the characteristics for generating stimulation based on randomized inter-pulse-intervals (IPI). A control unit controls the operation of the implantable stimulator circuit, and receives sets of stimulation parameters based on user input from a user input device executing application specific programming.

A method for assisting and tracking a user with a neurological disorder includes receiving, from a user interface, a selection of a physical activity that the user wishes to perform. The method further includes sending a control signal to a neurostimulation device, the control signal including instructions for the neurostimulation device to implement a neurostimulation therapy regimen corresponding to the selected physical activity that the user wishes to perform. The method also includes receiving an activity feedback signal from at least one sensor, the activity feedback signal including information regarding performance of the selected physical activity when performed by the user. The method further includes sending a monitoring signal to a remotely located caregiver device, the monitoring signal including activity data derived from the information regarding performance of the selected physical activity.

An implantable medical device (IMD) includes one or more stimulation engines (SEs) and selectively connectable output switching circuitry for driving a plurality of output nodes associated with a respective plurality of electrodes of the IMD's lead system when implanted in a patient. The output switching circuitry may be configured to facilitate self-test mode (STM) functionality in the IMD (e.g., when it is in a hermetically sealed package) by using a dual mode switch in series with a stimulation engine selection switch with respect to each output node in the output switching circuitry under mode selection control.

Systems and methods for treating a patient having a blood glucose abnormality, such as type 2 diabetes (T2D), using an electrical signal are disclosed. A representative method for treating a patient includes, based at least in part on a patient indication of a blood glucose abnormality, positioning at least one implantable signal delivery device proximate to a target location at the patient's spinal cord within a vertebral range of from about C8 to about T12. The method further includes directing an electrical signal to the target location via the implantable signal delivery device, wherein the electrical signal has a frequency in a frequency range of from 1.2 kHz to 100 kHz.

Techniques for providing therapy to a patient via electrical stimulation are described. The techniques include, for example, determining, relative to a start time of providing the electrical stimulation, one or more efficacy times that correspond to an efficacy indicator, determining, according to the efficacy times, efficacy data items for the patient, comparing the efficacy data items with the efficacy indicator, and generating, based on the comparison, a prediction of an expected response to the therapy manifesting in the patient at a prospective time.

Methods and systems for providing sub-perception spinal cord stimulation are described. In some examples, the stimulation current is shared among three or more anodes and three or more cathodes to provide virtual poles that are configured to cover a relatively large area of the patient's neural tissue that contains the “sweet spot” for treating the patient's pain. Covering a relatively large area mitigates the need to perform time-intensive sweet spot searching. In some examples, one or more stimulation parameters are varied while the stimulation is being provided.

Systems, devices, and methods for remote monitoring and managing of patients with chronic pain are discussed. A remote monitoring system comprises a cloud-computing device and a remote device. The cloud-computing device receives patient data including physiological or functional information sensed by sensors, and provides on-demand cloud-based services including establishing a correspondence between one or more physiological or functional states and one or more pain levels, detecting patient physiological or functional state, predicting a pain level, detecting a patient behavior, generating a recommendation for adjusting sensor operations based on the patient behavior, and storing patient data and other information in a cloud storage. The remote device can access the cloud storage and the cloud-based services, provide the stored information to an authorized user or the patient, control an implantable device to initiate or adjust a neuromodulation therapy, or adjust sensor operations.