Setpoint Medical Corporation

Massachusetts Institute of Technology

Jesse M Simon

Michael Allen Faltys

Jacob Arial Levine

Yiming Liu

Ralph J Zitnik

Steven R Hall

Joshua Chambers

Leadless, implantable microstimulators for treating chronic inflammation. These devices can include a static magnetic field detector (e.g., non-Hall effect sensors/detectors, including those based on a Wiegand effect or generating pulses at a predetermined frequency range and using a detection circuit to determine the decay rate of the pulses), to trigger an emergency shut off of the microstimulator. Also described are methods and apparatuses for regulating the temperature of an implant based applied power from a charger (e.g., voltage across the charger when unloaded and when loaded by the implant) to yield a power control loop correlated with the power drawn by the implant to determine temperature of the implant. A negotiation protocol can exchange data between the charger and the implant (e.g., type of charger, type of implant, nature of the coupling between the two, etc.) to set target power control loop parameters to estimate and regulate implant temperature.

Implantable neurostimulator having power control and thermal regulation and methods of use

A system for treating chronic inflammation may include an implantable microstimulator, a wearable charger, and optionally an external controller. The implantable microstimulator may be implemented as a leadless neurostimulator implantable in communication with a cervical region of a vagus nerve. The microstimulator can address several types of stimulation including regular dose delivery. The wearable charger may be worn around the subject's neck to rapidly (<10 minutes per week) charge an implanted microstimulator. The external controller may be configured as a prescription pad that controls the dosing and activity of the microstimulator.

Neural stimulation devices and systems for treatment of chronic inflammation

Methods and apparatuses for stimulation of the vagus nerve to treat inflammation including adjusting the stimulation based on one or more metric sensitive to patient response. The one or more metrics may include heart rate variability, level of T regulatory cells, particularly memory T regulatory cells, temperature, etc. Stimulation may be provided through an implantable microstimulator.

Control of vagal stimulation

Methods and apparatuses (e.g., devices and systems) for vagus nerve stimulation, including (but not limited to) sub-diaphragmatic vagus nerve stimulation. In particular, the methods and apparatuses described herein may be used to stimulate the posterior sub-diaphragmatic vagus nerve to treat inflammation and/or inflammatory disorders. The implantable microstimulators described herein may be leadless and batteryless.

Batteryless implantable microstimulators

Leadless, implantable microstimulators for treating chronic inflammation. These devices can include a static magnetic field detector (e.g., non-Hall effect sensors/detectors, including those based on a Wiegand effect or generating pulses at a predetermined frequency range and using a detection circuit to determine the decay rate of the pulses), to trigger an emergency shut off of the micro stimulator. Also described are methods and apparatuses for regulating the temperature of an implant based applied power from a charger (e.g., voltage across the charger when unloaded and when loaded by the implant) to yield a power control loop correlated with the power drawn by the implant to determine temperature of the implant. A negotiation protocol can exchange data between the charger and the implant (e.g., type of charger, type of implant, nature of the coupling between the two, etc.) to set target power control loop parameters to estimate and regulate implant temperature.

A nerve cuff for establishing a nerve block on a nerve can have a cuff body with a channel for receiving a nerve, a reservoir for holding a drug, and an elongate opening slit extending the length of the cuff body that can be opened to provide access to the channel and can be closed to enclose the cuff body around the nerve. The nerve cuff can also include an electrode for detecting and measuring electrical signals generated by the nerve. A controller can be used to control delivery of the drug based on the electrical signals generated by the nerve.

Systems and methods for establishing a nerve block

A system for treating chronic inflammation may include an implantable microstimulator, a wearable charger, and optionally an external controller. The implantable microstimulator may be implemented as a leadless neurostimulator implantable in communication with a cervical region of a vagus nerve. The microstimulator can address several types of stimulation including regular dose delivery. The wearable charger may be worn around the subject's neck to rapidly (&#x3c;10 minutes per week) charge an implanted microstimulator. The external controller may be configured as a prescription pad that controls the dosing and activity of the microstimulator.

Methods and apparatuses (e.g., devices and systems) for vagus nerve stimulation, including (but not limited to) sub-diaphragmatic vagus nerve stimulation. In particular, the methods and apparatuses described herein may be used to stimulate the posterior sub-diaphragmatic vagus nerve to treat inflammation and/or inflammatory disorders. The implantable microstimulators described herein may be inductively charged and/or communicated with using the external charger. The implant may include a receiving antenna wrapped around the battery and/or the housing of the microstimulator/microregulator and/or may include a high magnetic permeability material in order to serve as a magnetic core for the antenna coil. Wearable inductive chargers/communication devices for inductively communicating with (including charging) an implanted microstimulator are described herein, which may include magnetically conductive material to enhance communication with an implant, including sub-diaphragmatic implants. Also described herein are inductive chargers/communication devices, including belts, and pads (e.g., mattresses) able to recharge an implanted neurostimulation device.

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Los Angeles, CA, United States of America

Jesse M Simon