公开(公告)号：US20230397831A1

公开(公告)日：2023-12-14

申请号：US18249880

申请日：2021-10-22

Applicant: Washington University ,  Northwestern University

Inventor： Mitchell Pet ,  Matthew MacEwan ,  John Rogers ,  Changsheng Wu ,  Di Lu ,  Wubin Bai ,  Hexia Guo ,  Shuo Li ,  Hany Arafa

IPC: A61B5/026 ,  A61B5/1455 ,  A61B5/00

CPC classification number: A61B5/0261 ,  A61B5/1455 ,  A61B5/0075

Abstract: A wearable probe includes a sensor module and a control module. The sensor module includes a transmission source to transmit signals into the tissue at a source position, and two detectors to detect a result of the signals, the two detectors including a first detector positioned at a first separation distance from the source position and a second detector positioned at a second separation distance from the source position. The control module includes a controller and a battery to power the controller and the sensor module. The control module includes a processor, a memory including instructions, and a communications interface. The instructions cause the processor to control the sensor module to transmit signals into the tissue and detect results of the signals with the at least two detectors, receive the detected results, store the detected results in the memory, and transmit the detected results to a remote device.

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.