公开(公告)号：US20230404427A1

公开(公告)日：2023-12-21

申请号：US18210980

申请日：2023-06-16

申请人： THE REGENTS OF THE UNIVERSITY OF MICHIGAN

发明人： Duxin SUN ,  Yogesh GIANCHANDANI ,  Tao LI ,  Jeremy FELTON ,  Hsueh-Tsung LU ,  Alexander BENKEN ,  Partha DUTTA ,  Xiangyu ZHAO ,  Manjunath PAI

IPC分类号： A61B5/06 ,  A61B5/00 ,  A61B5/07

CPC分类号： A61B5/067 ,  A61B5/6861 ,  A61B5/4839 ,  A61B5/073 ,  A61B2010/0061

摘要： A method is presented for tracking an ingestible device in a gastrointestinal tract of a subject. The method includes: measuring acceleration of the ingestible device as it traverses through the gastrointestinal tract, for example using an accelerometer disposed in the ingestible device; computing a metric from the acceleration measurements obtained by the accelerometer over a given period of time; and identifying a location in the gastrointestinal tract based in part on the metric.

公开(公告)号：US20240011593A1

公开(公告)日：2024-01-11

申请号：US18035062

申请日：2020-11-06

申请人： THE REGENTS OF THE UNIVERSITY OF MICHIGAN ,  TOTALENERGIES ONETECH

发明人： Yogesh B. GIANCHANDANI ,  Alexander BENKEN ,  Neeharika VELLALURU ,  Partha DUTTA ,  John-Richard ORDONEZ-VARELA ,  Aurelie LE-BEULZE ,  Jean-Gregoire BOERO-ROLLO

IPC分类号： F16L55/40

CPC分类号： F16L55/40 ,  F16L2101/30

摘要： In various aspects, the present disclosure provides an example autonomous microsystem for immersion into a fluid. The autonomous microsystem includes electronics, a power source, and a packaging system that surrounds the electronics and the power source. The electronics can be configured to sense and record one or more environmental conditions. The packaging system may include a deformable shell that defines an internal space and a plurality of filler particles disposed in the internal space and configured to control a density of the autonomous microsystem in relation to the fluid. The filler particles may comprise a low-density material having a bulk density greater than or equal to about 100 kg/m3 and less than or equal to about 1,000 kg/m3 and have a packing density greater than or equal to about 1011/m3 and less than or equal to about 1021/m3.

公开(公告)号：US20220326136A1

公开(公告)日：2022-10-13

申请号：US17763733

申请日：2020-10-02

申请人： TOTAL S.E. ,  THE REGENTS OF THE UNIVERSITY OF MICHIGAN

发明人： Yogesh B. GIANCHANDANI ,  Tao LI ,  Partha DUTTA ,  Alexander BENKEN ,  John-Richard ORDONEZ-VARELA

IPC分类号： G01N15/08 ,  G01N33/24

摘要： Investigating the permeability and porosity of geological samples is a routine element of geological studies, and is of particular interest in the oil and gas industry. Core-flood experiments are commonly performed on rock samples to measure transport characteristics in the laboratory. This disclosure reports the design and implementation of a high resolution distributed pressure measurement system for core-flood experiments. A series of microfabricated pressure sensors can be embedded in bolts that are housed within the pressurized polymer sheath that encases a rock core. A feedthrough technology has been developed to provide lead transfer between the sensors and system electronics across a 230-bar pressure difference. The system has been successfully benchtop tested with fluids such as synthetic oil and/or gas. Pressure measurements were recorded over a dynamic range of 20 bar with a resolution as small as 0.3 mbar.