公开(公告)号：US20230277303A1

公开(公告)日：2023-09-07

申请号：US18024327

申请日：2021-09-07

Applicant: NORTHWESTERN UNIVERSITY

Inventor： John A. Rogers ,  Anthony R. Banks ,  Di Lu

IPC: A61F2/24 ,  A61B5/0215 ,  A61B5/00

CPC classification number: A61F2/24 ,  A61B5/0215 ,  A61B5/686 ,  A61B5/6869

Abstract: Provided are systems and methods for wireless, LCR-based, passive sensor systems for catheter or other implantable deployment using collapsible electromechanics. Each sensor system includes a deformable coil and a capacitive pressure sensor, collectively forming a LCR circuit having a self-resonant frequency. Multiple sensor systems may be implanted in a collapsible artificial valve to non-invasively detect the status of the collapsible artificial valve. Specifically, when the collapsible artificial valve is implanted in a mammal subject, antennas may be disposed on the skin of the mammal subject to wirelessly measure the self-resonant frequencies of the LCR circuits of the sensor systems. Thus, the blood pressure of the mammal subject may be calculated based on the self-resonant frequencies measured by the antenna, and the status of the collapsible artificial valve may be determined based on the blood pressure.

公开(公告)号：US20220364914A1

公开(公告)日：2022-11-17

申请号：US17623935

申请日：2020-07-02

Applicant: NORTHWESTERN UNIVERSITY

Inventor： Kyeongha Kwon ,  Seung Yun Heo ,  Anthony R. Banks ,  John A. Rogers

IPC: G01J1/42 ,  G01J1/02 ,  G01J1/46

Abstract: A system for measuring a radiant exposure of electromagnetic radiation includes an accumulation detection module having a detector and configured to continuously monitor an electromagnetic radiation received by the detector; and an adaptive circuit configured to periodically interrogate the accumulation detection module; adjust a frequency of interrogation of the accumulation detection module based on an intensity of the electromagnetic radiation received by the detector; and autonomously transmit information related to an amount of the electromagnetic radiation received by the detector to a remote device.

公开(公告)号：US11860031B2

公开(公告)日：2024-01-02

申请号：US17623935

申请日：2020-07-02

Applicant: NORTHWESTERN UNIVERSITY

Inventor： Kyeongha Kwon ,  Seung Yun Heo ,  Anthony R. Banks ,  John A. Rogers

IPC: G01J1/42 ,  G01J1/02 ,  G01J1/46

CPC classification number: G01J1/429 ,  G01J1/0204 ,  G01J1/46

Abstract: A system for measuring a radiant exposure of electromagnetic radiation includes an accumulation detection module having a detector and configured to continuously monitor an electromagnetic radiation received by the detector; and an adaptive circuit configured to periodically interrogate the accumulation detection module; adjust a frequency of interrogation of the accumulation detection module based on an intensity of the electromagnetic radiation received by the detector; and autonomously transmit information related to an amount of the electromagnetic radiation received by the detector to a remote device.

公开(公告)号：US20240407654A1

公开(公告)日：2024-12-12

申请号：US18274040

申请日：2022-01-31

Applicant: NORTHWESTERN UNIVERSITY

Inventor： John A. Rogers ,  Anthony R. Banks ,  Kyeongha Kwon

IPC: A61B5/0205 ,  A61B5/00 ,  A61B5/01 ,  A61B5/021 ,  A61B5/026

Abstract: An implantable, wireless cardiac hemodynamics monitor system includes a bio-sensing module and a wireless electronic subsystem. The bio-sensing module is implanted in a heart or an artery of the mammal subject to continuously monitor cardiac functions of the mammal subject. The wireless electronic subsystem is implanted between a fat layer and a dermis layer of a skin of the mammal subject and electrically connected to the bio-sensing module through insulated flexible wires. the wireless electronic subsystem is wirelessly communicated to an external wireless power transfer (WPT) module and an external user interface module. In operation, the wireless electronic subsystem is used to wirelessly receive power transferred from the external WPT module, and provide the power to the bio-sensing module; and to obtain sensing signals of the cardiac functions monitored by the bio-sensing module, and wirelessly transmit the sensing signals obtained to the external user interface module.

公开(公告)号：US20240110827A1

公开(公告)日：2024-04-04

申请号：US18534841

申请日：2023-12-11

Applicant: NORTHWESTERN UNIVERSITY

Inventor： Kyeongha Kwon ,  Seung Yun Heo ,  Anthony R. Banks ,  John A. Rogers

IPC: G01J1/42 ,  G01J1/02 ,  G01J1/46

CPC classification number: G01J1/429 ,  G01J1/0204 ,  G01J1/46

Abstract: A system for measuring a radiant exposure of electromagnetic radiation comprises an accumulation detection module (ADM) comprising a detector and configured to continuously monitor an electromagnetic radiation received by the detector; and an adaptive circuit configured to periodically interrogate the ADM; adjust a frequency of interrogation of the ADM based on an intensity of the electromagnetic radiation received by the detector; and autonomously transmit information related to an amount of the electromagnetic radiation received by the detector to a remote device.

公开(公告)号：US20240023882A1

公开(公告)日：2024-01-25

申请号：US18031389

申请日：2021-10-18

Applicant: NORTHWESTERN UNIVERSITY

Inventor： John A. Rogers ,  Anthony R. Banks ,  Surabhi Rao Madhvapathy ,  Heling Wang ,  Yonggang Huang ,  Shuai Xu

IPC: A61B5/00 ,  A61B5/145 ,  G01N25/56

CPC classification number: A61B5/443 ,  A61B5/4875 ,  A61B5/6832 ,  A61B5/14521 ,  A61B5/002 ,  G01N25/56 ,  A61B2562/164 ,  A61B2562/166 ,  A61B2562/0271

Abstract: This invention relates to a soft, battery-free, flexible, non-invasive, reusable hydration sensor adherable to even small-areas and curvilinear surfaces of a body. The hydration sensor measures volumetric water content in skin as a function of depth, and wirelessly transmits data to a portable smart device. The hydration sensor includes a top layer for thermal, chemical and mechanical isolation of the hydration sensor from an environment; a bottom layer operably placed on a target area of interest on the skin; and a flexible printed circuit board (f-PCB) disposed between the top layer and the bottom layer. The f-PCB contains electronics for sensing and wireless communication. The bottom layer operably serves as a direct interface between the f-PCB and the skin and comprises a flexible adhesive for attaching the hydration sensor to the skin.

公开(公告)号：US20230255483A1

公开(公告)日：2023-08-17

申请号：US18009384

申请日：2021-06-10

Applicant: NORTHWESTERN UNIVERSITY

Inventor： John A. Rogers ,  Anthony R. Banks ,  Kyeongha Kwon ,  Jan-kai Chang

IPC: A61B5/00 ,  A61B5/01

CPC classification number: A61B5/0008 ,  A61B5/01 ,  A61B5/442 ,  A61B5/443 ,  A61B5/445 ,  A61B2562/0271 ,  A61B2562/164 ,  A61B2562/227

Abstract: The invention relates to a hydration sensor comprising a sensing module operably disposed on a target area of interest of skin of a living subject for detecting data associated with thermal properties of the skin; and a wireless platform coupled with the sensing module for wireless data transmission between the sensing module and an external device. The sensing module comprises a thermal actuator for operably heating the target area of interest thereof; and a sensing circuit for simultaneously detecting a transient temperature change thereof to determine thermal properties of the skin.