Patents by Inventor Zongxi Li

Zongxi Li 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).

  • Publication number: 20240358860
    Abstract: Compounds, systems, and methods are provided for the design and assembly of a non-invasive, analyte sensing dressing. The dressing can be therapeutic. The dressing includes a sensor and a matrix. The sensor is capable of detecting analytes such as molecular oxygen, carbon dioxide, nitric oxides, dissolved analytes in plasma, and hydrogen ions. The matrix is at least partially permeable to the analyte. The device emits a detectable signal when the sensor is excited in the presence of the analyte. In one version of the dressing, the sensor includes a meso-unsubstituted metallated porphyrin that is sensitive towards oxygen. The metallated porphyrin can be excited when illuminated at a first wavelength, followed by emission of phosphorescence at a second wavelength whose intensity can be used as an indicator for oxygen concentration.
    Type: Application
    Filed: July 11, 2024
    Publication date: October 31, 2024
    Applicant: The General Hospital Corporation
    Inventors: Conor L. Evans, Gabriela Apiou, Alexander J. Nichols, Emmanouil Rousakis, Zongxi Li
  • Patent number: 12059481
    Abstract: Compounds, systems, and methods are provided for the design and assembly of a non-invasive, analyte sensing dressing. The dressing can be therapeutic. The dressing includes a sensor and a matrix. The sensor is capable of detecting analytes such as molecular oxygen, carbon dioxide, nitric oxides, dissolved analytes in plasma, and hydrogen ions. The matrix is at least partially permeable to the analyte. The device emits a detectable signal when the sensor is excited in the presence of the analyte. In one version of the dressing, the sensor includes a meso-unsubstituted metallated porphyrin that is sensitive towards oxygen. The metallated porphyrin can be excited when illuminated at a first wavelength, followed by emission of phosphorescence at a second wavelength whose intensity can be used as an indicator for oxygen concentration.
    Type: Grant
    Filed: January 25, 2022
    Date of Patent: August 13, 2024
    Assignee: The General Hospital Corporation
    Inventors: Conor L. Evans, Gabriela Apiou, Alexander J. Nichols, Emmanouil Rousakis, Zongxi Li
  • Publication number: 20220257797
    Abstract: Compounds, systems, and methods are provided for the design and assembly of a non-invasive, analyte sensing dressing. The dressing can be therapeutic. The dressing includes a sensor and a matrix. The sensor is capable of detecting analytes such as molecular oxygen, carbon dioxide, nitric oxides, dissolved analytes in plasma, and hydrogen ions. The matrix is at least partially permeable to the analyte. The device emits a detectable signal when the sensor is excited in the presence of the analyte. In one version of the dressing, the sensor includes a meso-unsubstituted metallated porphyrin that is sensitive towards oxygen. The metallated porphyrin can be excited when illuminated at a first wavelength, followed by emission of phosphorescence at a second wavelength whose intensity can be used as an indicator for oxygen concentration.
    Type: Application
    Filed: January 25, 2022
    Publication date: August 18, 2022
    Inventors: Conor L. Evans, Gabriela Apiou, Alexander J. Nichols, Emmanouil Rousakis, Zongxi Li
  • Patent number: 11253613
    Abstract: Compounds, systems, and methods are provided for the design and assembly of a non-invasive, analyte sensing dressing that includes a sensor and a matrix. The sensor is capable of detecting analytes such as molecular oxygen. The matrix is at least partially permeable to the analyte. In one version of the dressing, the sensor includes a meso-unsubstituted metallated porphyrin that is sensitive towards oxygen. The metallated porphyrin can be excited when illuminated at a first wavelength, followed by emission of phosphorescence at a second wavelength whose intensity can be used as an indicator for oxygen concentration. The metallated porphyrin can be prepared from a phosphorescent meso-unsubstituted porphyrin having the Formula (I): wherein M is a metal, wherein each R is independently an atom or a group of atoms, and wherein at least one R is —O(C)OR?, wherein R? is optionally substituted alkyl.
    Type: Grant
    Filed: February 11, 2020
    Date of Patent: February 22, 2022
    Assignee: The General Hospital Corporation
    Inventors: Conor L. Evans, Gabriela Apiou, Alexander J. Nichols, Emmanouil Rousakis, Zongxi Li
  • Patent number: 10905780
    Abstract: Compounds, systems, and methods are provided for the design and assembly of a non-invasive, analyte sensing dressing. The dressing can be therapeutic. The dressing includes a sensor and a matrix. The sensor is capable of detecting analytes such as molecular oxygen, carbon dioxide, nitric oxides, dissolved analytes in plasma, and hydrogen ions. The matrix is at least partially permeable to the analyte. The device emits a detectable signal when the sensor is excited in the presence of the analyte. In one version of the dressing, the sensor includes a meso-unsubstituted metallated porphyrin that is sensitive towards oxygen. The metallated porphyrin can be excited when illuminated at a first wavelength, followed by emission of phosphorescence at a second wavelength whose intensity can be used as an indicator for oxygen concentration.
    Type: Grant
    Filed: August 3, 2018
    Date of Patent: February 2, 2021
    Assignee: The General Hospital Corporation
    Inventors: Conor L. Evans, Gabriela Apiou, Alexander J. Nichols, Emmanouil Rousakis, Zongxi Li
  • Publication number: 20200171172
    Abstract: Compounds, systems, and methods are provided for the design and assembly of a non-invasive, analyte sensing dressing. The dressing can be therapeutic. The dressing includes a sensor and a matrix. The sensor is capable of detecting analytes such as molecular oxygen, carbon dioxide, nitric oxides, dissolved analytes in plasma, and hydrogen ions. The matrix is at least partially permeable to the analyte. The device emits a detectable signal when the sensor is excited in the presence of the analyte. In one version of the dressing, the sensor includes a meso-unsubstituted metallated porphyrin that is sensitive towards oxygen. The metallated porphyrin can be excited when illuminated at a first wavelength, followed by emission of phosphorescence at a second wavelength whose intensity can be used as an indicator for oxygen concentration.
    Type: Application
    Filed: February 11, 2020
    Publication date: June 4, 2020
    Inventors: Conor L. Evans, Gabriela Apiou, Alexander J. Nichols, Emmanouil Rousakis, Zongxi Li
  • Patent number: 10524707
    Abstract: In one aspect, the present disclosure provides a system A system, including a light source, a detector, and a controller in electrical communication with the light source and the detector. The controller is configured to execute a program stored in the controller to trigger the light source to emit a first pulse of light having a first pulse duration for illumination of a target, actuate the detector after a first delay time following emission of the first pulse of light to begin detecting a first signal from the target for a first detection time, and repeat the steps of triggering the light source and actuating the detector at least once, varying for each repetition at least one of the first pulse duration, the first delay time, and the first detection time.
    Type: Grant
    Filed: February 2, 2015
    Date of Patent: January 7, 2020
    Assignee: The General Hospital Corporation
    Inventors: Zongxi Li, Conor L. Evans, Alexander J. Nichols
  • Publication number: 20190382265
    Abstract: A submicron structure having a silica body defining a plurality of pores is described. The submicron body may be spherical or non-spherical, and may include a cationic polymer or co-polymer on the surface of said silica body. The submicron structure may further include an oligonucleotide and be used to deliver the oligonucleotide to a cell. The submicron structure may further include a therapeutic agent and be used to deliver the therapeutic agent to a cell. An oligonucleotide and therapeutic agent may be used together. For example, when the oligonucleotide is an siRNA, the composition may be used to decrease cellular resistance to the therapeutic agent by decreasing translation of a resistance gene.
    Type: Application
    Filed: May 30, 2019
    Publication date: December 19, 2019
    Inventors: Jeffrey I. Zink, Andre E. Nel, Tian Xia, Zhaoxia Ji, Huan Meng, Zongxi Li, Monty Liong, Min Xue, Derrick Y. Tarn, Sanaz Gardner
  • Patent number: 10343903
    Abstract: A submicron structure having a silica body defining a plurality of pores is described. The submicron body may be spherical or non-spherical, and may include a cationic polymer or co-polymer on the surface of said silica body. The submicron structure may further include an oligonucleotide and be used to deliver the oligonucleotide to a cell. The submicron structure may further include a therapeutic agent and be used to deliver the therapeutic agent to a cell. An oligonucleotide and therapeutic agent may be used together. For example, when the oligonucleotide is an siRNA, the composition may be used to decrease cellular resistance to the therapeutic agent by decreasing translation of a resistance gene.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: July 9, 2019
    Assignee: The Regents of the University of California
    Inventors: Jeffrey I. Zink, Andre E. Nel, Tian Xia, Zhaoxia Ji, Huan Meng, Zongxi Li, Monty Liong, Min Xue, Derrick Y. Tarn, Sanaz Gardner
  • Publication number: 20180344878
    Abstract: Compounds, systems, and methods are provided for the design and assembly of a non-invasive, analyte sensing dressing. The dressing can be therapeutic. The dressing includes a sensor and a matrix. The sensor is capable of detecting analytes such as molecular oxygen, carbon dioxide, nitric oxides, dissolved analytes in plasma, and hydrogen ions. The matrix is at least partially permeable to the analyte. The device emits a detectable signal when the sensor is excited in the presence of the analyte. In one version of the dressing, the sensor includes a meso-unsubstituted metallated porphyrin that is sensitive towards oxygen. The metallated porphyrin can be excited when illuminated at a first wavelength, followed by emission of phosphorescence at a second wavelength whose intensity can be used as an indicator for oxygen concentration.
    Type: Application
    Filed: August 3, 2018
    Publication date: December 6, 2018
    Inventors: Conor L. Evans, Gabriela Apiou, Alexander J. Nichols, Emmanouil Rousakis, Zongxi Li
  • Patent number: 10039842
    Abstract: Compounds, systems, and methods are provided for the design and assembly of a non-invasive, analyte sensing dressing. The dressing includes a sensor and a matrix. The sensor is capable of detecting analytes such as molecular oxygen, carbon dioxide, nitric oxides, dissolved analytes in plasma, and hydrogen ions. The device emits a detectable signal when the sensor is excited in the presence of the analyte. In one version of the dressing, the sensor includes a meso-unsubstituted metallated porphyrin that is sensitive towards oxygen. The metallated porphyrin can be excited when illuminated at a first wavelength, followed by emission of phosphorescence at a second wavelength whose intensity can be used as an indicator for oxygen concentration. The porphyrin can have the Formula (II): wherein R1 includes a moiety selected from the group consisting of alkynl groups, triazolyl groups, alkylglutamate groups, and a pair of alkylglutamate groups.
    Type: Grant
    Filed: August 23, 2017
    Date of Patent: August 7, 2018
    Assignee: The General Hospital Corporation
    Inventors: Conor L. Evans, Gabriela Apiou, Alexander J. Nichols, Emmanouil Rousakis, Zongxi Li
  • Patent number: 10016164
    Abstract: A system and method are provided for the design and assembly of a device including a sensor capable and a compatible matrix material incorporated into a dressing. The sensor is capable of detecting analytes such as molecular oxygen, carbon dioxide, nitric oxides, dissolved analytes in plasma, and hydrogen ions, and the matrix is at least partially permeable to the analyte. The device emits a detectable signal when the sensor is excited in the presence of the analyte.
    Type: Grant
    Filed: July 10, 2013
    Date of Patent: July 10, 2018
    Assignee: The General Hospital Corporation
    Inventors: Conor L. Evans, Gabriela Apiou, Reginald Birngruber, Alexander J. Nichols, Emmanouil Rousakis, Zongxi Li
  • Publication number: 20180155189
    Abstract: A submicron structure having a silica body defining a plurality of pores is described. The submicron body may be spherical or non-spherical, and may include a cationic polymer or co-polymer on the surface of said silica body. The submicron structure may further include an oligonucleotide and be used to deliver the oligonucleotide to a cell. The submicron structure may further include a therapeutic agent and be used to deliver the therapeutic agent to a cell. An oligonucleotide and therapeutic agent may be used together. For example, when the oligonucleotide is an siRNA, the composition may be used to decrease cellular resistance to the therapeutic agent by decreasing translation of a resistance gene.
    Type: Application
    Filed: September 7, 2017
    Publication date: June 7, 2018
    Inventors: Jeffrey I. Zink, Andre E. Nel, Tian Xia, Zhaoxia Ji, Huan Meng, Zongxi Li, Monty Liong, Min Xue, Derrick Y. Tarn, Sanaz Kabehie
  • Publication number: 20170348437
    Abstract: Compounds, systems, and methods are provided for the design and assembly of a non-invasive, analyte sensing dressing. The dressing can be therapeutic. The dressing includes a sensor and a matrix. The sensor is capable of detecting analytes such as molecular oxygen, carbon dioxide, nitric oxides, dissolved analytes in plasma, and hydrogen ions. The matrix is at least partially permeable to the analyte. The device emits a detectable signal when the sensor is excited in the presence of the analyte. In one version of the dressing, the sensor includes a meso-unsubstituted metallated porphyrin that is sensitive towards oxygen. The metallated porphyrin can be excited when illuminated at a first wavelength, followed by emission of phosphorescence at a second wavelength whose intensity can be used as an indicator for oxygen concentration.
    Type: Application
    Filed: August 23, 2017
    Publication date: December 7, 2017
    Inventors: Conor L. Evans, Gabriela Apiou, Alexander J. Nichols, Emmanouil Rousakis, Zongxi Li
  • Patent number: 9789206
    Abstract: Compounds, systems, and methods are provided for a non-invasive, analyte sensing dressing. The dressing includes a sensor and a matrix. The sensor is capable of detecting analytes such as molecular oxygen, carbon dioxide, nitric oxides, dissolved analytes in plasma, and hydrogen ions. The device emits a detectable signal when the sensor is excited in the presence of the analyte. The sensor may include a meso-unsubstituted metallated porphyrin that is sensitive towards oxygen. The porphyrin can be excited when illuminated at a first wavelength, followed by emission of phosphorescence at a second wavelength whose intensity is an indicator for oxygen concentration. An example metallated porphyrin has the Formula(I): wherein M is a metal, each R is independently an atom or a group of atoms, and at least one R is —OR1, wherein R1 is an atom or a group of atoms.
    Type: Grant
    Filed: June 13, 2014
    Date of Patent: October 17, 2017
    Assignee: The General Hospital Corporation
    Inventors: Conor L. Evans, Gabriela Apiou, Alexander J. Nichols, Emmanouil Rousakis, Zongxi Li
  • Publication number: 20160338631
    Abstract: In one aspect, the present disclosure provides a system A system, including a light source, a detector, and a controller in electrical communication with the light source and the detector. The controller is configured to execute a program stored in the controller to trigger the light source to emit a first pulse of light having a first pulse duration for illumination of a target, actuate the detector after a first delay time following emission of the first pulse of light to begin detecting a first signal from the target for a first detection time, and repeat the steps of triggering the light source and actuating the detector at least once, varying for each repetition at least one of the first pulse duration, the first delay time, and the first detection time.
    Type: Application
    Filed: February 2, 2015
    Publication date: November 24, 2016
    Inventors: Zongxi Li, Conor L. Evans, Alexander J. Nichols
  • Publication number: 20160159842
    Abstract: Compounds, systems, and methods are provided for the design and assembly of a non-invasive, analyte sensing dressing. The dressing can be therapeutic. The dressing includes a sensor and a matrix. The sensor is capable of detecting analytes such as molecular oxygen, carbon dioxide, nitric oxides, dissolved analytes in plasma, and hydrogen ions. The matrix is at least partially permeable to the analyte. The device emits a detectable signal when the sensor is excited in the presence of the analyte. In one version of the dressing, the sensor includes a meso-unsubstituted metallated porphyrin that is sensitive towards oxygen. The metallated porphyrin can be excited when illuminated at a first wavelength, followed by emission of phosphorescence at a second wavelength whose intensity can be used as an indicator for oxygen concentration.
    Type: Application
    Filed: June 13, 2014
    Publication date: June 9, 2016
    Inventors: Conor L. Evans, Gabriela Apiou, Alexander J. Nichols, Emmanouil Rousakis, Zongxi Li
  • Publication number: 20150182166
    Abstract: A system and method are provided for the design and assembly of a device including a sensor capable and a compatible matrix material incorporated into a dressing. The sensor is capable of detecting analytes such as molecular oxygen, carbon dioxide, nitric oxides, dissolved analytes in plasma, and hydrogen ions, and the matrix is at least partially permeable to the analyte. The device emits a detectable signal when the sensor is excited in the presence of the analyte.
    Type: Application
    Filed: July 10, 2013
    Publication date: July 2, 2015
    Inventors: Conor L. Evans, Gabriela Apiou, Reginald Birngruber, Alexander J. Nichols, Emmanouil Rousakis, Zongxi Li
  • Publication number: 20120207795
    Abstract: A submicron structure having a silica body defining a plurality of pores is described. The submicron body may be spherical or non-spherical, and may include a cationic polymer or co-polymer on the surface of said silica body. The submicron structure may further include an oligonucleotide and be used to deliver the oligonucleotide to a cell. The submicron structure may further include a therapeutic agent and be used to deliver the therapeutic agent to a cell. An oligonucleotide and therapeutic agent may be used together. For example, when the oligonucleotide is an siRNA, the composition may be used to decrease cellular resistance to the therapeutic agent by decreasing translation of a resistance gene.
    Type: Application
    Filed: March 23, 2012
    Publication date: August 16, 2012
    Applicant: The Regents of the University of California
    Inventors: Jeffrey I. Zink, Andre E. Nel, Tian Xia, Zhaoxia Ji, Huan Meng, Zongxi Li, Monty Liong, Min Xue, Derrick Y. Tarn