Patents by Inventor Ping Jia
Ping Jia has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20210100466Abstract: This disclosure relates to integrated channel integrity detection and to reconstruction of electrophysiological signals. An example system includes a input channels configured to receive respective electrical signals from respective electrodes. An amplifier stage includes a plurality of differential amplifiers, each of the differential amplifiers being configured to provide an amplifier output signal based on a difference between a respective pair of the electrical signals. Channel detection logic is configured to provide channel data indicating an acceptability of each of the input channels based on an analysis of a common mode rejection of the amplifier output signals.Type: ApplicationFiled: November 23, 2020Publication date: April 8, 2021Inventors: SHAHABEDIN SHAHDOOSTFARD, QINGGUO ZENG, PING JIA, BRIAN P. GEORGE, KEVIN PONZIANI, QING LOU, DANIEL VARGHAI, JEFFREY B. ADAIR
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Patent number: 10874318Abstract: This disclosure relates to integrated channel integrity detection and to reconstruction of electrophysiological signals. An example system includes a plurality of input channels configured to receive respective electrical signals from a set of electrodes. An amplifier stage includes a plurality of differential amplifiers, each of the differential amplifiers being configured to provide an amplifier output signal based on a difference between a respective pair of the electrical signals. Channel detection logic is configured to provide channel data indicating an acceptability of each of the plurality of input channels based on an analysis of a common mode rejection of the amplifier output signals.Type: GrantFiled: March 6, 2018Date of Patent: December 29, 2020Assignee: CARDIOINSIGHT TECHNOLOGIES, INC.Inventors: Shahabedin Shahdoostfard, Qingguo Zeng, Ping Jia, Brian P. George, Kevin Ponziani, Qing Lou, Daniel Varghai, Jeffrey B. Adair
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Patent number: 10806359Abstract: One or more non-transitory computer-readable media have instructions executable by a processor and programmed to perform a method. The method includes analyzing the electrical data to locate one or more wave front lines over a given time interval. The electrical data represents electrophysiological signals distributed across a cardiac envelope for one or more time intervals. A respective trajectory is determined for each wave end of each wave front line that is located across the cardiac envelope over the given time interval. A set of connected trajectories are identified based on a duration that the trajectories are connected to each other by a respective wave front line during the given time interval. A connectivity association is characterized for the trajectories in the set of connected trajectories.Type: GrantFiled: April 27, 2017Date of Patent: October 20, 2020Assignee: CARDIOINSIGHT TECHNOLOGIES, INC.Inventors: Qingguo Zeng, Qing Lou, Ryan M. Bokan, Ping Jia, Connor S. Edel, Charulatha Ramanathan
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Publication number: 20200260978Abstract: Systems and methods can be used to provide an indication of heart function, such as an indication of mechanical function or hemodynamics of the heart, based on electrical data. For example, a method for assessing a function of the heart can include determining a time-based electrical characteristic for a plurality of points distributed across a spatial region of the heart. The plurality of points can be grouped into at least two subsets of points based on at least one of a spatial location for the plurality of points or the time-based electrical characteristics for the plurality of points. An indication of synchrony for the heart can be quantified based on relative analysis of the determined time-based electrical characteristic for each of the at least two subsets of points.Type: ApplicationFiled: May 8, 2020Publication date: August 20, 2020Inventors: CHARULATHA RAMANATHAN, HAROLD WODLINGER, MARIA STROM, STEVEN G. ARLESS, PING JIA
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Patent number: 10729345Abstract: For example, one or more non-transitory computer-readable media includes executable instructions to perform a method. The method includes defining a plurality of spatial regions distributed across a geometric surface. At least one wave front that propagates across the geometric surface is detected based on electrical data representing electrophysiological signals for each of a plurality of nodes distributed on the geometric surface over at least one time interval. An indication of conduction velocity of the wave front is determined for at least one spatial region of the plurality of spatial regions during the time interval based on a duration that the wave front resides within the at least one spatial region. Slow conduction activity is identified for the at least one spatial region based on comparing the indication of conduction velocity relative to a threshold. Conduction data is stored in memory to represent each slow conduction event.Type: GrantFiled: May 4, 2018Date of Patent: August 4, 2020Assignee: CARDIOINSIGHT TECHNOLOGIES, INC.Inventors: Qing Lou, Jeffrey B. Adair, Qingguo Zeng, Ping Jia, Ryan Bokan, Connor Edel, Rahsean Ellis, Brian P. George, Raja Ghanem, Timothy G. Laske
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Patent number: 10682066Abstract: Systems and methods can be used to provide an indication of heart function, such as an indication of mechanical function or hemodynamics of the heart, based on electrical data. For example, a method for assessing a function of the heart can include determining a time-based electrical characteristic for a plurality of points distributed across a spatial region of the heart. The plurality of points can be grouped into at least two subsets of points based on at least one of a spatial location for the plurality of points or the time-based electrical characteristics for the plurality of points. An indication of synchrony for the heart can be quantified based on relative analysis of the determined time-based electrical characteristic for each of the at least two subsets of points.Type: GrantFiled: November 7, 2017Date of Patent: June 16, 2020Assignee: CARDIOINSIGHT TECHNOLOGIES, INC.Inventors: Charulatha Ramanathan, Harold Wodlinger, Maria Strom, Steven G. Arless, Ping Jia
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Publication number: 20200170540Abstract: An example method includes applying a localization signal to a source electrode positioned within a conductive volume and a ground electrode at a known location. Electrical activity is sensed at a plurality of sensor electrodes distributed across an outer surface of the conductive volume. The locations of each of the sensor electrodes and the location of the ground electrode being stored in memory as part of geometry data. The electrical activity sensed at each of the sensor electrodes is stored in the memory as electrical measurement data. The method also includes computing a location of the source electrode by minimizing a difference between respective pairs of source voltages determined for the plurality of sensor electrodes. The source voltage for each of the sensor electrodes is determined based on the electrical measurement data and the geometry data.Type: ApplicationFiled: February 11, 2020Publication date: June 4, 2020Inventors: PING JIA, QINGGUO ZEN, CHARULATHA RAMANATHAN, RYAN BOKAN
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Publication number: 20200163570Abstract: An example method includes analyzing morphology and/or amplitude of each of a plurality of electrophysiological signals across a surface of a patient's body to identify candidate segments of each signal satisfying predetermined conduction pattern criteria. The method also includes determining a conduction timing parameter for each candidate segment in each of the electrophysiological signals.Type: ApplicationFiled: January 28, 2020Publication date: May 28, 2020Inventors: QING LOU, MEREDTH E. STONE, QINGGUO ZENG, JEFFREY B. ADAIR, CONNOR S. EDEL, PING JIA, KEVIN R. PONZIANI, BRIAN P. GEORGE, RYAN M. BOKAN, MATTHEW J. SABO, VLADIMIR A. TUROVSKIY, KETAL C. PATEL, CHARULATHA RAMANATHAN
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Patent number: 10662932Abstract: A pump comprises a housing (141) having a cavity (142) with an inlet valve (143), an apparatus (144) for raising fluid pressure in the cavity (142) and a discharge valve (145), the discharge valve (145) comprises a valve head (160) movable between an open and closed position and a valve seat (167), wherein the pump further comprises a booster piston (182) arranged in a booster cylinder (183), the booster piston (182) has a first face (191) exposed to a low pressure zone (189) and a second face (194) exposed to fluid pressure in the cavity (142), and at least one of the booster piston (182) and the booster cylinder (183) is movable relative to the other to add an opening force to the discharge valve. The pump is preferably a mud pump for circulating drilling mud through a drill string in a wellbore or a cement pump which may be of the type for pumping cement into a wellbore.Type: GrantFiled: February 13, 2015Date of Patent: May 26, 2020Assignee: National Oilwell Varco Petroleum Equipment (Shanghai) Co., Ltd.Inventors: He Zhang, Mengjin Yu, Mengxi Hu, Ping Jia
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Patent number: 10612843Abstract: A circulating fluidized bed apparatus, using fans, circulating pipes, functional branches and feeding pipes sequentially connected to form one or more circulating channels; the fans and jet streams generated thereby disperse materials into a fluidized state; the fluidized materials circulate and flow at a high speed in the circulating channels to achieve the objectives of the process, efficiently realizing operations such as drying, smashing, evaporating and distilling, concentrating, sieving, mixing, and ultraviolet sterilizing of powdered materials, realizing quick drying at normal temperature, and quickly preparing fresh plant materials into powdered materials at normal temperature. All the operations are performed by one apparatus, thus reducing equipment investment, simplifying production process steps, improving product quality, reducing production costs, and having low energy consumption, wide application and a simple structure.Type: GrantFiled: December 30, 2014Date of Patent: April 7, 2020Inventors: Ping Jia, Yunjie Yang, Wanheng Hu, Yunjing Jia
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Publication number: 20200093444Abstract: A map generator can be programmed to generate a multi-parameter graphical map by encoding at least two different physiological parameters for a geometric surface, corresponding to tissue of a patient, using different color components of a multi-dimensional color model such that each of the different physiological parameters is encoded by at least one of the different color components.Type: ApplicationFiled: October 21, 2019Publication date: March 26, 2020Inventors: QINGGUO ZENG, CHARULATHA RAMANATHAN, VENKATESH VASUDEVAN, RÉMI DUBOIS, PING JIA
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Patent number: 10575749Abstract: An example method includes analyzing morphology and/or amplitude of each of a plurality of electrophysiological signals across a surface of a patient's body to identify candidate segments of each signal satisfying predetermined conduction pattern criteria. The method also includes determining a conduction timing parameter for each candidate segment in each of the electrophysiological signals.Type: GrantFiled: April 27, 2017Date of Patent: March 3, 2020Assignee: CARDIOINSIGHT TECHNOLOGIES, INC.Inventors: Qing Lou, Meredith E. Stone, Qingguo Zeng, Jeffrey B. Adair, Connor S. Edel, Ping Jia, Kevin R. Ponziani, Brian P. George, Ryan M. Bokan, Matthew J. Sabo, Vladimir A. Turovskiy, Ketal C. Patel, Charulatha Ramanathan
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Patent number: 10568540Abstract: An example method includes applying a localization signal to a source electrode positioned within a conductive volume and a ground electrode at a known location. Electrical activity is sensed at a plurality of sensor electrodes distributed across an outer surface of the conductive volume. The locations of each of the sensor electrodes and the location of the ground electrode being stored in memory as part of geometry data. The electrical activity sensed at each of the sensor electrodes is stored in the memory as electrical measurement data. The method also includes computing a location of the source electrode by minimizing a difference between respective pairs of source voltages determined for the plurality of sensor electrodes. The source voltage for each of the sensor electrodes is determined based on the electrical measurement data and the geometry data.Type: GrantFiled: September 28, 2015Date of Patent: February 25, 2020Assignee: CARDIOINSIGHT TECHNOLOGIES, INC.Inventors: Ping Jia, Qingguo Zeng, Charulatha Ramanathan, Ryan Bokan
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Publication number: 20200038946Abstract: The semi-solid molding method of the present invention comprises six parts as the traditional method: a mold, a main machine, an injection system, a pulping machine, a quantitative feeding system, and a holding furnace; the injection system, the pulping machine, and the quantitative feeding system are combined and called integrated pulping injection system, and the system is placed in the holding furnace. In order to adapt to the difficulty of molding the semi-solid slurry to carry less heat into the mold with large wall thickness, the semi-solid mold is divided into three layers according to the function, which greatly reduces the heat absorption capacity of the mold, due to the characteristics of the constant flow pump, the holding pressure after filling can reach 0.01 MPa-30 MPa, so low pressure casting, high pressure casting, differential pressure casting, liquid die forging and semi-solid extrusion forging can be unified in one kind of main machine.Type: ApplicationFiled: June 22, 2017Publication date: February 6, 2020Applicant: FUJIAN RHEOMET LIGHT METAL CO., LTD.Inventors: Lijuan ZHU, Liang CHEN, Yujie CHEN, Ping JIA
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Patent number: 10506948Abstract: A system (10) can localize an object in a patient's body. The system (10) can include a pulse generator (18 or 30) configured to provide a localization signal to at least one electrode that is fixed to the object in the patient's body. A sensor array (22) can be configured to detect an electrical field produced in response to the localization signal and provide respective sensor signals. A map generator (42) can be configured to reconstruct electrical signals based on the respective sensor signals and geometry data representing a geometric relationship between patient anatomy and the sensor array. A location calculator (50) can determine a location where the localization signal was applied based on the reconstructed electrical signals.Type: GrantFiled: July 5, 2012Date of Patent: December 17, 2019Assignee: CARDIOINSIGHT TECHNOLOGIES, INC.Inventors: Harold Wodlinger, Charulatha Ramanathan, Ping Jia
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Patent number: 10482680Abstract: A map generator can be programmed to generate a multi-parameter graphical map by encoding at least two different physiological parameters for a geometric surface, corresponding to tissue of a patient, using different color components of a multi-dimensional color model such that each of the different physiological parameters is encoded by at least one of the different color components.Type: GrantFiled: January 17, 2014Date of Patent: November 19, 2019Assignee: CARDIOINSIGHT TECHNOLOGIES, INC.Inventors: Qingguo Zeng, Charulatha Ramanathan, Venkatesh Vasudevan, Remi Dubois, Ping Jia
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Publication number: 20190336023Abstract: For example, one or more non-transitory computer-readable media includes executable instructions to perform a method. The method includes defining a plurality of spatial regions distributed across a geometric surface. At least one wave front that propagates across the geometric surface is detected based on electrical data representing electrophysiological signals for each of a plurality of nodes distributed on the geometric surface over at least one time interval. An indication of conduction velocity of the wave front is determined for at least one spatial region of the plurality of spatial regions during the time interval based on a duration that the wave front resides within the at least one spatial region. Slow conduction activity is identified for the at least one spatial region based on comparing the indication of conduction velocity relative to a threshold. Conduction data is stored in memory to represent each slow conduction event.Type: ApplicationFiled: May 4, 2018Publication date: November 7, 2019Inventors: QING LOU, JEFFREY B. ADAIR, QINGGUO ZENG, PING JIA, RYAN BOKAN, CONNOR EDEL, RAHSEAN ELLIS, BRIAN P. GEORGE, RAJA GHANEM, TIMOTHY G. LASKE
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Publication number: 20190304186Abstract: In an example, an n-dimensional method of fundamental solution (MFS) is used to compute reconstructed electrical activity on a cardiac envelope based on geometry data and electrical data, where n is a positive integer greater than three. The electrical data represents electrical activity measured non-invasively from a plurality of locations distributed on a body surface of a patient, and the geometry data represents three-dimensional body surface geometry for the locations distributed on the body surface where the electrical activity is measured and three-dimensional heart geometry for the cardiac envelope.Type: ApplicationFiled: April 2, 2018Publication date: October 3, 2019Inventors: YONG WANG, QINGGUO ZENG, PING JIA, QING LOU
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Patent number: 10426401Abstract: An example method includes receiving monitoring data representing one or more substantially real time electrical signals based on measurements from one or more respective electrodes. The method also includes selecting at least one signal of interest (SOI) from the monitoring data, each selected SOI being associated with a respective anatomical location and storing SOI data in memory corresponding to each selected SOI. The method also includes quantifying changes between signal characteristics of real time signals acquired for one or more respective anatomical locations and the at least one SOI that is associated with each of the respective anatomical locations. An output can be generated based on the quantifying to characterize spatially local signal changes with respect to each of the respective anatomical locations.Type: GrantFiled: August 28, 2015Date of Patent: October 1, 2019Assignee: CARDIOINSIGHT TECHNOLOGIES, INC.Inventors: Ryan Bokan, Charulatha Ramanathan, Ping Jia, Meredith E. Stone
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Publication number: 20190290154Abstract: This disclosure provides one or more computer-readable media having computer-executable instructions for performing a method. The method includes storing geometry data representing a primary geometry of a cardiac envelope that includes nodes distributed across the cardiac envelope and geometry of a body surface that includes locations where electrical signals are measured. The body surface is spaced apart from the cardiac envelope. The method also includes perturbing the primary geometry of the cardiac envelope a given distance and direction to define the perturbed geometry of the cardiac envelope including nodes spaced from the nodes of the primary geometry. The method also includes computing reconstructed bipolar electrical signals on the nodes of the primary cardiac envelope based on the electrical signals measured from the body surface and the geometry data, including the primary and perturbed geometries of the cardiac envelope.Type: ApplicationFiled: March 23, 2018Publication date: September 26, 2019Inventors: YONG WANG, QING LOU, QINGGUO ZENG, PING JIA