Medtronic, Inc.

Lockheed Martin Corporation

Lockheed Martin Corpora Tion

Andrew Thomas Fried

Venkat R Gaddam

Brett Otteson

Robert J Monson

Douglas W Brown

Alfred A Zinn

Charles M Nowell, Jr

Robert M Schulzetenberg

Mehmet Arcan Erturk

Rick C Stevens

Todd V Smith

Kunal J Paralikar

Randall Mark Stoltenberg

Randall M Stoltenberg

Jerome Chang

Janet Creaser

Prathyusha Marri

Nicholas K Johnson

Bruce T Peacock

Tim Stachowiak

Sidney Hu

Yohan Kim

Steve Deininger

Charles Nowell

A wireless power transfer system in which the driver and control circuitry are located within the electromagnetic field of the power transmission antenna, e.g., a charging coil. The power transfer system may be contained in a flexible housing, which change shape using one or more hinges, be formed of a conformable material and so on. Changes in the relative location of the antenna and the circuitry may cause interference in the circuitry and loading of the antenna, which in turn may impact the electromagnetic field output by the antenna. The wireless power system may include sensors that provide an indication of an amount of deformation of the system. The driver circuitry of this disclosure may receive an indication of the relative location of the circuitry to the antenna and compensate for changes in the output electromagnetic field caused by changes in the relative location.

Flexible recharger with integrated electronics

Disclosed is a system for recharging a selected power source wirelessly, such as through a power transmission. The power source may be positioned within a subject and be charged wirelessly through the subject, such as tissue of the subject. A thermal transfer system is provided to transfer or transport thermal energy from a first position to a second position, such as away from the subject.

Thermal transfer system and method

An implantable electrical stimulation medical system is disclosed. The system includes an implantable medical device having electrical circuitry configured to perform electrical stimulation, a nonstandard implantable medical lead, and an adapter matrix. The adapter matrix electrically interfaces with the electrical circuitry and the nonstandard implantable medical lead to provide electrical stimulation from the implantable medical device to the nonstandard implantable medical lead.

Implantable medical lead systems and adapters

Devices and methods described herein facilitate rapid wireless recharging, while reducing risk of injury, damage, or discomfort caused by heat generated during recharging. The embodiments described herein are useful in a variety of context, including for IoT devices, personal electronics, electric vehicles, and medical devices, among others. Such devices can prevent localized overheating of the device.

Wireless recharging devices and methods based on thermal boundary conditions

Devices and methods described herein facilitate rapid wireless recharging, while reducing risk of injury, damage, or discomfort caused by heat generated during recharging. The embodiments described herein are useful in a variety of context, including for IoT devices, personal electronics, electric vehicles, and medical devices, among others.

Estimating and controlling skin temperature with low temperature thermal conductivity recharger

Devices, systems, and techniques are described to detect when a power transmitting and receiving system is in an inefficient position, which may cause a thermal response that less desirable than a more efficient position. The system may power transmitting device configured to wirelessly transfer electromagnetic energy to a power receiving device. Processing circuitry of the system may compute a target output power deliverable by the power transmitting device for a first duration and control the power transmitting device to output the target output power based in part on a heat limit. The processing circuitry may further calculate an energy transfer efficiency to the power receiving unit, update an adjustment factor based on the calculated energy transfer efficiency, and apply the adjustment factor to the heat limit for a subsequent duration.

Implant location detection and adaptive temperature control

The instant application relates to inductive charging of devices subject to migration. Embodiments described herein provide charging to devices at variable depths and locations to accommodate both net displacement of an implantable device as well as angular rotation of the implantable device by selecting appropriate sets or subsets of available field generation coils.

System and methods of decreasing the directional sensitivity of axially aligned rechargeable implant

Devices and methods described herein relate to wireless recharging from a distance, and increasing the efficiency of such charging by intelligently or autonomously changing the rectification mode of the implanted device.

Recharge system extending depth and area of useful recharge via dynamically adjusted rectification mode

Systems and methods for improved user experience with rechargers for implantable medical devices. An external charging device for providing power to a rechargeable implantable device can determine a firmware state of the external charging device during recharging of the rechargeable implantable device, display a searching indication using a light indicator when the firmware state is determined to be in a searching state, display a charging indication using the light indicator when the firmware state is determined to be a charging state, and display an error indication using the light indicator when the firmware state is determined to be an error state. An optional user device application can provide complementary graphical user interfaces according to the firmware states.

User centered system for recharging implanted neurostimulator

A method for controlling charging a power source of an implantable medical device (IMD) in a patient including determining a power being delivered to a primary coil of an external charging device for recharging, determining an estimated power delivered to the IMD power source an estimated heat generated by the primary coil based on a resistance of the primary coil determined as function of at least one of a recharge frequency, a temperature of the primary coil, and a current supplied to the primary coil, calculating an estimated heat generated by the IMD by subtracting the estimated heat generated by the primary coil and the estimated power delivered stored by the rechargeable power source from the power being delivered to a primary coil; and controlling based on the heat generated by the IMD, the power being delivered by the primary coil of the external charging device.

Recharge algorithm for accurate heat control estimation in presence of ferrite and electronics

Techniques for estimating the temperature of an external portion of a medical device are described. In an example, processing circuitry may determine a temperature sensed by at least one temperature sensor of an internal portion of the device, and determine, based on an algorithm that incorporates the temperature of the internal portion of the device, an estimated temperature of a second portion of the device, wherein the algorithm is representative of an estimated temperature difference between the first portion of the device and the second portion of the device based at least in part on a dynamic transfer function that operates in a time-domain.

Estimating the temperature of a housing of a device

Devices and methods described herein facilitate rapid wireless recharging, while reducing risk of injury, damage, or discomfort caused by heat generated during recharging. The embodiments described herein are useful in a variety of context, including for IoT devices, personal electronics, electric vehicles, and medical devices, among others. Such devices can prevent localized over-heating of the device.

Growing community of inventors

Saint Paul, MN, United States of America

Andrew Thomas Fried