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：US20210096111A1

公开(公告)日：2021-04-01

申请号：US17120920

申请日：2020-12-14

申请人： THE REGENTS OF THE UNIVERSITY OF MICHIGAN

发明人： Yogesh B. GIANCHANDANI ,  Yutao QIN ,  Weilin LIAO ,  Hsueh-Tsung LU ,  Declan WINSHIP

IPC分类号： G01N30/60 ,  G01N30/46 ,  G01N30/08

摘要： A progressive cellular architectures has been presented for vapor-phase chemical analyzers. The progressive cellular architecture consists of a series of heterogeneous micro-gas chromatography cells. Each individual cell targets vapor species within a specific volatility range by using a unique combination of a preconcentrator and a separation column. The cells are connected progressively in series to cover a broad range of volatile analyte chemical vapors. Valves may inadvertently absorb or adsorb and subsequently release target chemical analyte molecules, thereby interfering with quantitative analysis. Therefore, the inlet to the cells is configured without a valve.