公开(公告)号：US20230337933A1

公开(公告)日：2023-10-26

申请号：US18194862

申请日：2023-04-03

申请人： GE Precision Healthcare LLC

发明人： Jianye Ning ,  Xin Xie ,  Yu Liu ,  Chunlai Xiao ,  Sheng Tong ,  Dongliang Yang ,  Kai Wang

IPC分类号： A61B5/055 ,  A61B5/053

CPC分类号： A61B5/055 ,  A61B5/053

摘要： An impedance tuner in a magnetic resonance system include at least one of an amplitude tuning circuit and a phase tuning circuit. The amplitude tuning circuit includes M serially-connected amplitude tuners. Each amplitude tuner includes at least one microwave transmission line and a first switch circuit connected in parallel, wherein the first switch circuit controls the at least one microwave transmission line to be in an on state or an off state, respectively, and the value of M is a positive integer greater than or equal to 1. The phase tuning circuit includes a phase tuner, and the phase tuner includes P second microwave transmission lines and a second switch circuit, wherein the second switch circuit controls the P second microwave transmission lines to be in an on state or an off state, respectively, and the value of P is a positive integer greater than or equal to 2.

公开(公告)号：US20230320606A1

公开(公告)日：2023-10-12

申请号：US18190622

申请日：2023-03-27

申请人： Tallinn University of Technology

发明人： Olev Märtens ,  Anar Abdullayev ,  Margus Metshein ,  Antoine Gautier ,  Antoine Frappe ,  Andrei Krivošei ,  Marek Rist ,  Paul Annus ,  Benoit Larras ,  Deepu John ,  Barry Cardiff

IPC分类号： A61B5/029 ,  A61B5/053 ,  A61B5/0265

CPC分类号： A61B5/0265 ,  A61B5/029 ,  A61B5/053

摘要： The impedance cardiography device comprises an impedance measuring unit, connected to the human body to be measured, a differentiator, a comparator and a microcontroller integrated with an analog-to-digital converter, characterized by that the device further comprises two peak voltage detection units with different polarities (positive and negative), the strobing outputs of them being connected to the digital (binary) inputs of the microcontroller and the analog hold outputs to the inputs of the analog-to-digital converter.

公开(公告)号：US11768196B2

公开(公告)日：2023-09-26

申请号：US16625603

申请日：2018-07-06

申请人： President and Fellows of Harvard College

发明人： Donhee Ham ,  Jeffrey T. Abbott ,  Hongkun Park ,  Wenxuan Wu

IPC分类号： G01N33/487 ,  C12M1/42 ,  C12N13/00 ,  G01N27/00 ,  A61B5/053 ,  A61B5/24 ,  A61N1/18 ,  B82Y15/00

CPC分类号： G01N33/48728 ,  A61B5/053 ,  A61B5/24 ,  A61N1/18 ,  C12M35/02 ,  C12N13/00 ,  G01N27/00 ,  A61B2562/0285 ,  B82Y15/00

摘要： Methods and systems for stimulating and monitoring electrogenic cells are described. Some systems for stimulating electrogenic cells are based on the injection of electric currents into the cells via electrodes connected to the cells. Such stimulators may comprise an impedance element having an input terminal and an output terminal coupled to an electrode, and a voltage follower coupled between the input terminal and the output terminal of the impedance element, the voltage follower being configured to maintain a substantially constant voltage between the input terminal and the output terminal of the impedance element. The impedance element may comprise one or more switched capacitors at least in some embodiments. In some embodiments, the voltage follower may be implemented using a source follower.

公开(公告)号：US11766187B2

公开(公告)日：2023-09-26

申请号：US16668911

申请日：2019-10-30

申请人： Empatica Srl

发明人： Simone Tognetti ,  Ivan Cenci ,  Daniele Resnati ,  Maurizio Garbarino ,  Matteo Lai

IPC分类号： A61B5/053 ,  A61B5/0205 ,  A61B5/0533 ,  A61B5/0531 ,  A61B5/00 ,  A61B5/024

CPC分类号： A61B5/053 ,  A61B5/0205 ,  A61B5/0531 ,  A61B5/0533 ,  A61B5/681 ,  A61B5/6802 ,  A61B5/02405 ,  A61B5/02438 ,  A61B2562/0215 ,  A61B2562/0219

摘要： An apparatus for measuring electrodermal activity can include a first electrode in contact with a first portion and a second electrode in contact with a second portion of a stratum corneum, and in electronic communication with the second electrode through the stratum corneum. A processing module is electrically coupled to the first electrode and the second electrode and is operable to (a) bias the first electrode at a first voltage V+ and the second electrode at a second voltage V− (b) measure a current flowing between the first electrode and the second electrode, the current corresponding to the conductance of the stratum corneum, (c) subtract a compensation current from the measured current (d) measure a resulting current producing an amplified output voltage (e) measure a conductance of the stratum corneum, and (f) adjust at least one of the first voltage, the second voltage and the compensation current to desaturate the output voltage.

公开(公告)号：US11751775B2

公开(公告)日：2023-09-12

申请号：US16999597

申请日：2020-08-21

申请人： DePuy Synthes Products, Inc.

发明人： David Armbruster

IPC分类号： A61B5/053 ,  G16H50/20 ,  A61B5/00 ,  A61B17/64

CPC分类号： A61B5/053 ,  A61B5/0002 ,  A61B5/746 ,  A61B17/64 ,  G16H50/20

摘要： A device, having a housing; a power source configured to supply electrical power to a conductive percutaneous implant in a circuit including the conductive percutaneous implant and tissue of a patient adjacent to the conductive percutaneous implant; an electrical sensor configured to generate a signal indicative of at least one electrical parameter of the circuit; and at least one data processing system having one or more processors configured to receive the signal and analyze the signal to determine at least one of a presence or change of infection of the tissue, and pass a control signal to the power source to vary the electrical power responsive to determining at least one of the presence or change of infection of the tissue.

公开(公告)号：US11744521B2

公开(公告)日：2023-09-05

申请号：US17011231

申请日：2020-09-03

申请人： ZOLL MEDICAL CORPORATION

发明人： Shane S. Volpe ,  Thomas E. Kaib

IPC分类号： A61B5/00 ,  A61N1/39 ,  A41D13/12 ,  A61N1/04 ,  A61B5/053 ,  A61B5/113 ,  A61B5/349 ,  A61B5/0205 ,  A61B5/024

CPC分类号： A61B5/7221 ,  A41D13/1281 ,  A61B5/0205 ,  A61B5/053 ,  A61B5/1135 ,  A61B5/349 ,  A61B5/6804 ,  A61B5/6844 ,  A61B5/742 ,  A61N1/046 ,  A61N1/0484 ,  A61N1/3925 ,  A61N1/3968 ,  A61N1/3975 ,  A61N1/3987 ,  A61B5/02438 ,  A61B5/6805 ,  A61B5/7455 ,  A61N1/3931

摘要： A wearable therapeutic device to facilitate care of a subject is provided. The wearable therapeutic device can include a garment having a sensing electrode. The garment includes at least one of an inductive element and a capacitive element, and a controller identifies an inductance of the inductive element or a capacitance of the capacitive element, and determines a confidence level of information received from the sensing electrode based on the inductance or the capacitance. The wearable therapeutic device also includes an alarm module coupled with the controller and configured to provide a notification to a subject based on the confidence level.

公开(公告)号：US11737678B2

公开(公告)日：2023-08-29

申请号：US16403397

申请日：2019-05-03

申请人： Impedimed Limited

发明人： Scott Chetham ,  Andrew William Ward ,  James McFarlane Kennedy

IPC分类号： A61B5/053 ,  A61B5/00 ,  A61B5/0537 ,  A61B5/0535

CPC分类号： A61B5/0537 ,  A61B5/0022 ,  A61B5/053 ,  A61B5/0535 ,  A61B5/6801 ,  A61B5/7203 ,  A61B5/7221 ,  A61B5/7225 ,  A61B5/7257 ,  A61B5/7278 ,  A61B5/746 ,  A61B5/7475 ,  A61B5/7495 ,  A61B2562/08 ,  A61B2562/166

摘要： Apparatus for performing impedance measurements on a subject. The apparatus includes a first processing system for determining an impedance measurement procedure and determining instructions corresponding to the measurement procedure. A second processing system is provided for receiving the instructions, using the instructions to generate control signals, with the control signals being used to apply one or more signals to the subject. The second processing system then receives first data indicative of the one or more signals applied to the subject, second data indicative of one or more signals measured across the subject and performs at least preliminary processing of the first and second data to thereby allow impedance values to be determined.

公开(公告)号：US20230255512A1

公开(公告)日：2023-08-17

申请号：US18133137

申请日：2023-04-11

申请人： NATIONAL UNIVERSITY OF IRELAND, GALWAY

发明人： Sinead HUGHES ,  Siobhan KELLEHER

IPC分类号： A61B5/11 ,  A61B5/053 ,  A61B5/00 ,  G16H10/60 ,  G16H50/20

CPC分类号： A61B5/1107 ,  A61B5/053 ,  A61B5/4836 ,  G16H10/60 ,  G16H50/20

摘要： A system to determine status of a pelvic condition in a subject characterised by abnormal contractility activity of a target pelvic structure is described. The system comprises a sensing module to measure electrical activity of the subject's pelvis at a plurality of time points during the subject's hormonal cycle, a signal processing module configured to receive electrical activity measurements from the sensing module and isolate from the electrical activity measurements electrical contractility parameter measurements representative of the target pelvic structure, and a processor module operably connected to the signal processing module. The processor is configured to receive as an input the electrical contractility parameter measurements representative of the target pelvic structure, generate a data profile of the subject comprising the electrical contractility parameter measurements representative of the target pelvic structure, compare the data profile with a database of reference data profiles comprising reference data profiles of subjects with different pelvic condition status, output the status of the pelvic condition in the subject based on the comparison. In any embodiment, the signal processing module is configured to isolate from the electrical activity measurements slow wave electrical contractility parameter measurements representative of the target pelvic structure. Systems and methods for treating pelvic conditions comprising stimulation of a pelvic structure to normalise pelvic structure contractility are also described.

公开(公告)号：US20230226376A1

公开(公告)日：2023-07-20

申请号：US18110304

申请日：2023-02-15

申请人： DALHOUSIE UNIVERSITY

发明人： James Leonard ROBAR

IPC分类号： A61N5/10 ,  A61B5/11 ,  A61N7/02 ,  A61B90/18 ,  A61B5/05 ,  A61B34/20 ,  A61B90/14 ,  G01V3/08 ,  A61B5/053 ,  A61B5/00

CPC分类号： A61N5/1049 ,  A61B5/1126 ,  A61N7/02 ,  A61B90/18 ,  A61B5/05 ,  A61B34/20 ,  A61B90/14 ,  G01V3/08 ,  G01V3/088 ,  A61B5/053 ,  A61B5/746 ,  A61N5/1039 ,  A61B2562/0214 ,  A61B34/30

摘要： Systems and methods are described for the monitoring of patient motion via the detection of changes in capacitance, as measured using a capacitance position sensing electrode array. The changes in capacitance may be processed to determine a corresponding positional offset, for example, using a calibration data set relating capacitance to offset for each electrode of the array. The detected positional offset may be employed to provide feedback to a surgeon or operator of a medical device, or directly to the medical device for the control thereof. A medical procedure may be interrupted when the positional offset is detected to exceed a threshold. Alternatively, the detected positional offset may be employed to manually or automatically reconfigure a medical device to compensate for the detected change in position. Various configurations of capacitive position sensing devices are disclosed, including embodiment in incorporating capacitive sensing electrodes with a mask or other support structure.

公开(公告)号：US11701021B2

公开(公告)日：2023-07-18

申请号：US16598400

申请日：2019-10-10

申请人： Medtronic, Inc.

发明人： Megan Schmidt ,  Lars Mattison

IPC分类号： A61B5/053 ,  A61B5/00 ,  A61B18/14 ,  A61B90/00 ,  A61B18/00

CPC分类号： A61B5/053 ,  A61B5/6853 ,  A61B18/1492 ,  A61B2018/00577 ,  A61B2018/00791 ,  A61B2018/00875 ,  A61B2090/065

摘要： A method and system for lesion formation assessment in tissue that has undergone an ablation procedure. In one embodiment, a method of assessing lesion formation comprises: recording a baseline impedance measurement from an area of tissue with a medical device; ablating the area of tissue with the medical device; recording a post-treatment impedance measurement from the area of tissue with the medical device; identifying at least one amplitude characteristic of the baseline impedance measurement and identifying at least one amplitude characteristic of the post-treatment impedance measurement; comparing the at least one amplitude characteristic of the baseline impedance measurement and the at least one amplitude characteristic of the post-treatment impedance measurement; generating an indication of efficacy based on the comparison, the indication of efficacy being one of sufficient lesion formation and insufficient lesion formation; and re-ablating the area of tissue if the indication of efficacy is insufficient lesion formation.