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公开(公告)号：US20230293783A1
公开(公告)日：2023-09-21
申请号：US18118359
申请日：2023-03-07
Applicant: UNIVERSITY OF HOUSTON SYSTEM
Inventor： Ji Chen , Jianfeng Zheng
CPC classification number: A61L31/088 , A61L31/14 , A61L2400/00 , A61L2420/06
Abstract: Embodiments of the present disclosure pertain to implantable medical devices that are operational for mitigating radiofrequency (RF)-induced heating. The implantable medical devices generally include a ferrite material that is associated with at least one component of the implantable medical device and operational to reduce the RF-induced heating of the implantable medical device. Additional embodiments of the present disclosure pertain to methods of mitigating radiofrequency (RF)-induced heating of an implantable medical device by applying a ferrite material to at least one component of the implantable medical device. Thereafter, the ferrite material reduces the RF-induced heating of the medical device. In some embodiments, the methods of the present disclosure also include a step of implanting the implantable medical device into a subject, such as a human being.
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2.发明公开公开(公告)号：US20240288518A1
公开(公告)日：2024-08-29
申请号：US18656546
申请日：2024-05-06
Applicant: University of Houston System
Inventor： Ji Chen , Jianfeng Zheng
CPC classification number: G01R33/288 , G01N25/00 , H03F1/565 , H03F3/20 , H03F2200/387
Abstract: In an embodiment, the present disclosure pertains to electric field generators that include a signal generator electrically connected to a power amplifier, a impedance matching circuit electrically connected to the power amplifier, and a power divider electrically connected to the impedance matching circuit and to at least one of a first wall, a second wall, a third wall, a fourth wall, or a base area. In an additional embodiment, the present disclosure pertains to method of determining radio frequency (RF)-induced heating on a medical device utilizing an electric field generator of the present disclosure. Additional embodiments of the present disclosure pertain to methods of making electric field generators for testing a medical device.
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Patent Agency Ranking
公开(公告)号：US11266444B2
公开(公告)日：2022-03-08
申请号：US16248738
申请日：2019-01-15
Applicant: University of Houston System
Inventor： Ji Chen
Abstract: The present invention provides an external fixation device and method thereof. The device includes at least an insert for inserting into a patient's tissue such as a bone. The insert is fastened to a fastening assembly which comprises at least a RF heat source member during MRI scanning of the patient. At least a part of the RF heat source member's surface is covered with an absorption material to reduce the direct or indirect transfer of RF induced heat from the member to the insert. The absorption material has an electric conductivity greater than 10−4 S/m.
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公开(公告)号：US12013449B2
公开(公告)日：2024-06-18
申请号：US17549503
申请日：2021-12-13
Applicant: University of Houston System
Inventor： Ji Chen , Jianfeng Zheng
CPC classification number: G01R33/288 , G01N25/00 , H03F1/565 , H03F3/20 , H03F2200/387
Abstract: In an embodiment, the present disclosure pertains to electric field generators that include a signal generator electrically connected to a power amplifier, a impedance matching circuit electrically connected to the power amplifier, and a power divider electrically connected to the impedance matching circuit and to at least one of a first wall, a second wall, a third wall, a fourth wall, or a base area. In an additional embodiment, the present disclosure pertains to method of determining radio frequency (RF)-induced heating on a medical device utilizing an electric field generator of the present disclosure. Additional embodiments of the present disclosure pertain to methods of making electric field generators for testing a medical device.
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公开(公告)号：US10756575B2
公开(公告)日：2020-08-25
申请号：US15749637
申请日：2016-08-03
Applicant: University of Houston System
Inventor： Xiyao Xin , Ji Chen , David R. Jackson
Abstract: A wireless power transfer system may provide coils that are respectively position on upper and lower ends of a pipe to allow power to be wirelessly transferred. Additionally, the system may also provide a soft ferrite layer placed on the upper and lower pipe sections to enhance the magnetic coupling so that the wireless power transfer efficiency can be maintained at a sufficient level when the coil separation is relatively large. Notably, this ferrite layer may span most or the entirely of the region between the coils to further enhance performance. In some cases, a ferrite core may be position between the coils and the pipe as well. In some cases, the pipe may include a tool section that may be non-conductive or results in a discontinuity in the ferrite layer. However, the setup of the system allows power to be wirelessly transferred despite such discontinuity.
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公开(公告)号：US20220187391A1
公开(公告)日：2022-06-16
申请号：US17549503
申请日：2021-12-13
Applicant: University of Houston System
Inventor： Ji Chen
Abstract: In an embodiment, the present disclosure pertains to electric field generators that include a signal generator electrically connected to a power amplifier, a impedance matching circuit electrically connected to the power amplifier, and a power divider electrically connected to the impedance matching circuit and to at least one of a first wall, a second wall, a third wall, a fourth wall, or a base area. In an additional embodiment, the present disclosure pertains to method of determining radio frequency (RF)-induced heating on a medical device utilizing an electric field generator of the present disclosure. Additional embodiments of the present disclosure pertain to methods of making electric field generators for testing a medical device.
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公开(公告)号：US20180233277A1
公开(公告)日：2018-08-16
申请号：US15749637
申请日：2016-08-03
Applicant: University of Houston System
Inventor： Xiyao Xin , Ji Chen , David R. Jackson
Abstract: A wireless power transfer system may provide coils that are respectively position on upper and lower ends of a pipe to allow power to be wirelessly transferred. Additionally, the system may also provide a soft ferrite layer placed on the upper and lower pipe sections to enhance the magnetic coupling so that the wireless power transfer efficiency can be maintained at a sufficient level when the coil separation is relatively large. Notably, this ferrite layer may span most or the entirely of the region between the coils to further enhance performance. In some cases, a ferrite core may be position between the coils and the pipe as well. In some cases, the pipe may include a tool section that may be non-conductive or results in a discontinuity in the ferrite layer. However, the setup of the system allows power to be wirelessly transferred despite such discontinuity.
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