公开(公告)号：US20230352988A1

公开(公告)日：2023-11-02

申请号：US18330152

申请日：2023-06-06

Applicant: Medtronic, Inc.

Inventor： Andrew Thomas Fried ,  Douglas W. Brown ,  Charles M. Nowell ,  Robert J. Monson ,  Venkat R. Gaddam ,  Brett Otteson

IPC: H02J7/02 ,  A61N1/378 ,  H02J50/80 ,  H02J50/10 ,  H02J7/00

CPC classification number: H02J50/80 ,  A61N1/3787 ,  H02J7/0047 ,  H02J7/02 ,  H02J50/10

Abstract: 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.

公开(公告)号：US20230310869A1

公开(公告)日：2023-10-05

申请号：US17711916

申请日：2022-04-01

Applicant: Medtronic, Inc.

Inventor： Andrew Thomas Fried ,  Robert J. Monson

IPC: A61N1/378 ,  H02J50/10 ,  H02J50/00 ,  C09K5/06

CPC classification number: A61N1/3787 ,  H02J50/10 ,  H02J50/005 ,  C09K5/063

Abstract: A charging device includes a coil configured to wirelessly transfer energy to an implantable medical device. The charging device includes a phase change material. The charging device may include a ground plane. The phase change material is incorporated in the charging device, and a flexibility of the charging device is associated with a state of the phase change material. The ground plane is conformable to one or more surfaces of a target subject. The charging device may include a heat reduction assembly. The heat reduction assembly includes a material disposed in contact with the coil. The phase change material absorbs at least a portion of heat generated by the coil.

公开(公告)号：US12217900B2

公开(公告)日：2025-02-04

申请号：US17393860

申请日：2021-08-04

Applicant: Medtronic, Inc.

Inventor： Robert J. Monson ,  Andrew T. Fried

IPC: H01F27/28 ,  H02J7/02 ,  H02J50/10 ,  H05K7/20

Abstract: 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.

公开(公告)号：US20210393968A1

公开(公告)日：2021-12-23

申请号：US17350547

申请日：2021-06-17

Applicant: Medtronic, Inc.

Inventor： Robert J. Monson ,  Andrew T. Fried ,  Jeffrey P. Bodner ,  Jonathon E. Giftakis ,  Venkat R. Gaddam ,  Jacob P. Komarek

IPC: A61N1/378 ,  A61N1/372 ,  H02J50/00 ,  H02J50/20 ,  H02J7/02 ,  H02J50/80

Abstract: This disclosure describes devices, systems, and techniques for recharging power sources using RF energy received by one or more antennae. In one example, an implantable medical device includes a rechargeable power supply and an antenna configured to receive radio frequency (RF) energy having one or more frequencies within at least one of a first range from 1 MHz to 20 MHz or a second range from 100 MHz to 700 MHz. The implantable medical device may also include charging circuitry configured to convert the RF energy to a direct current (DC) power and charge the rechargeable power supply with the DC power.