An implant includes a housing that houses circuitry that is electrically coupled to one or more electrodes. The implant includes an antenna that is electrically coupled to the circuitry. The antenna has a pre-treatment state in which the antenna is not shaped to receive wireless power for treating a subject, and a treatment state in which the antenna is shaped to receive wireless power and to anchor the implant with respect to a nerve of the subject. Other embodiments are also described.

Devices, systems, and methods for coupling with an implantable neurostimulator for delivering one or more electrical pulses to a target region within a patient's body are disclosed herein. A device, such as a charger, can include: a power source for storing electrical energy; a resonant circuit that can have a plurality of selectable natural frequencies; a driver coupled to the power source and the resonant circuit; and a processor coupled to the resonant circuit to control the natural frequency of the resonant circuit. The processor can determine the natural frequency of the implantable neurostimulator, and can control the resonant circuit according to the determined natural frequency of the neurostimulator.

A system is provided for wireless transmission of data and/or power using an on-body antenna apparatus (40) and an implant device inside the body. The system comprises the implant device and the on-body antenna apparatus (40) as well as an antenna control system. The implant device, is for use within the body and comprises an implant antenna (16) arranged to receive wirelessly transmitted power and/or to wirelessly transmit data. The on-body antenna apparatus (40) is arranged to transmit power and/or data acting as a radiative antenna, wherein the on-body antenna apparatus (40) comprises a pair of patch antennas (42) arranged to be placed on the surface of the body (44) spaced apart from one another to form an antenna circuit that is coupled by the body tissue around and between the patch antennas (42). The antenna control system is for providing power to the on-body antenna apparatus (40) and/or for handling communications between the on-body antenna apparatus (40) and the implant antenna (16), wherein the antenna control system is arranged to drive the on-body antenna apparatus (40).

An implantable medical electrical lead includes an electrode assembly in which an electrical junction between a first conductor and an inner surface of a first electrode of the assembly is wedged within a first channel of at least one core member of the assembly, around which the first electrode extends. The at least one core member is formed from an insulating material, and the first channel may be one of a plurality of longitudinally extending channels arrayed around a circumference of a central lumen of the assembly, which is defined by the at least one core member. The first conductor extends along a length of the assembly, for example, defined between the first electrode and a second electrode thereof, in a helical path that travels around the central lumen.

A system and method for selecting leadwire stimulation parameters includes a processor iteratively performing, for each of a plurality of values for a particular stimulation parameter, each value corresponding to a respective current field: (a) shifting the current field longitudinally and/or rotationally to a respective plurality of locations about the leadwire; and (b) for each of the respective plurality of locations, obtaining clinical effect information regarding a respective stimulation of the patient tissue produced by the respective current field at the respective location; and displaying a graph plotting the clinical effect information against values for the particular stimulation parameter and locations about the leadwire, and/or based on the obtained clinical effect information, identifying an optimal combination of a selected value for the particular stimulation parameter and selected location about the leadwire at which to perform a stimulation using the selected value.

Systems, devices, and methods are discussed herein for wirelessly transmitting power and/or data to an implanted device, such as an implanted electrostimulator device. In an example, the subject matter includes a layered transmitter device with multiple conductive planes and excitation features. The transmitter device can be tuned to identify and apply device parameters for efficient wireless communication with a deeply implanted device. The transmitter is generally configured for midfield powering applications by providing signals that give rise to propagating signals inside of body tissue.

The present wireless remote control device is a type of equipment with non-tethered optical stimulation. The characteristic of this device is designed to utilize a magnetic resonance technique to modify the deficits of the conventional magnetic induction or radio-frequency power source. Compared to the other devices of photostimulation, the advantages are as follow: there is a strong and even electromagnetic power; the cost is cheaper than the previous others; the device uses the receiver coil on an animal's head to receive the magnetic power from the transformation of the electrical power in the outside big coil, and thus the weight of the receiver coil on the head is very light. The light and miniaturized coil on the head without battery could give animals more convenience in freely movement, and the behavior of animals can be controlled by the effective extent of the electromagnetic field through photostimulation.

A neuromodulation system includes a conductive element, a magnetic field generator, a power module and a computer processor. The conductive element located internal a patient's body. At least a portion of the conductive element is positioned adjacent to a target tissue. The magnetic field generator is positioned external to the patient's body. The magnetic field generator generates a time varying magnetic field for inducing stimulation of the target tissue in combination with the conductive element to produce stimulation that is larger than that which would occur in the absence of the conductive element. The power module supplies power to the magnetic field generator. The computer processor controls the time varying magnetic field provided by the magnetic field generator according to at least one set of stimulation parameters.

The present disclosure relates to subcutaneous direct current (DC) nerve conduction block. A subcutaneous electrode can be implanted under a subject's skin between the subject's skin and a neural structure within the subject's body. The subcutaneous electrode can be coupled to a current generator. A DC can be configured by the current generator and delivered through the subcutaneous electrode to block conduction in the neural structure. The subcutaneous electrode eliminates an effect of an impedance of the subject's skin on the DC. The DC can be returned to the current generator by a return electrode.

An example method includes obtaining an image of a lead implanted in a patient, the lead including one or more electrodes positioned along a longitudinal axis of the lead and a plurality of orientation markers; determining, in the image, respective locations of the electrodes and respective locations of the orientation markers; obtaining a template model corresponding to the lead; determining a transform between the determined locations of the one or more electrodes and the plurality of orientation markers and locations of corresponding electrodes and orientation markers in the template model; and determining the rotational orientation of the lead based on the transform.