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).
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Publication number: 20240358860Abstract: 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: ApplicationFiled: July 11, 2024Publication date: October 31, 2024Applicant: The General Hospital CorporationInventors: Conor L. Evans, Gabriela Apiou, Alexander J. Nichols, Emmanouil Rousakis, Zongxi Li
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Patent number: 12059481Abstract: 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: GrantFiled: January 25, 2022Date of Patent: August 13, 2024Assignee: The General Hospital CorporationInventors: Conor L. Evans, Gabriela Apiou, Alexander J. Nichols, Emmanouil Rousakis, Zongxi Li
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Publication number: 20220257797Abstract: 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: ApplicationFiled: January 25, 2022Publication date: August 18, 2022Inventors: Conor L. Evans, Gabriela Apiou, Alexander J. Nichols, Emmanouil Rousakis, Zongxi Li
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Patent number: 11253613Abstract: 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: GrantFiled: February 11, 2020Date of Patent: February 22, 2022Assignee: The General Hospital CorporationInventors: Conor L. Evans, Gabriela Apiou, Alexander J. Nichols, Emmanouil Rousakis, Zongxi Li
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Patent number: 10905780Abstract: 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: GrantFiled: August 3, 2018Date of Patent: February 2, 2021Assignee: The General Hospital CorporationInventors: Conor L. Evans, Gabriela Apiou, Alexander J. Nichols, Emmanouil Rousakis, Zongxi Li
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Publication number: 20200171172Abstract: 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: ApplicationFiled: February 11, 2020Publication date: June 4, 2020Inventors: Conor L. Evans, Gabriela Apiou, Alexander J. Nichols, Emmanouil Rousakis, Zongxi Li
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Patent number: 10524707Abstract: 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: GrantFiled: February 2, 2015Date of Patent: January 7, 2020Assignee: The General Hospital CorporationInventors: Zongxi Li, Conor L. Evans, Alexander J. Nichols
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Publication number: 20190382265Abstract: 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: ApplicationFiled: May 30, 2019Publication date: December 19, 2019Inventors: Jeffrey I. Zink, Andre E. Nel, Tian Xia, Zhaoxia Ji, Huan Meng, Zongxi Li, Monty Liong, Min Xue, Derrick Y. Tarn, Sanaz Gardner
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Patent number: 10343903Abstract: 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: GrantFiled: September 7, 2017Date of Patent: July 9, 2019Assignee: The Regents of the University of CaliforniaInventors: Jeffrey I. Zink, Andre E. Nel, Tian Xia, Zhaoxia Ji, Huan Meng, Zongxi Li, Monty Liong, Min Xue, Derrick Y. Tarn, Sanaz Gardner
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Publication number: 20180344878Abstract: 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: ApplicationFiled: August 3, 2018Publication date: December 6, 2018Inventors: Conor L. Evans, Gabriela Apiou, Alexander J. Nichols, Emmanouil Rousakis, Zongxi Li
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Patent number: 10039842Abstract: 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: GrantFiled: August 23, 2017Date of Patent: August 7, 2018Assignee: The General Hospital CorporationInventors: Conor L. Evans, Gabriela Apiou, Alexander J. Nichols, Emmanouil Rousakis, Zongxi Li
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Patent number: 10016164Abstract: 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: GrantFiled: July 10, 2013Date of Patent: July 10, 2018Assignee: The General Hospital CorporationInventors: Conor L. Evans, Gabriela Apiou, Reginald Birngruber, Alexander J. Nichols, Emmanouil Rousakis, Zongxi Li
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Publication number: 20180155189Abstract: 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: ApplicationFiled: September 7, 2017Publication date: June 7, 2018Inventors: Jeffrey I. Zink, Andre E. Nel, Tian Xia, Zhaoxia Ji, Huan Meng, Zongxi Li, Monty Liong, Min Xue, Derrick Y. Tarn, Sanaz Kabehie
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Publication number: 20170348437Abstract: 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: ApplicationFiled: August 23, 2017Publication date: December 7, 2017Inventors: Conor L. Evans, Gabriela Apiou, Alexander J. Nichols, Emmanouil Rousakis, Zongxi Li
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Patent number: 9789206Abstract: 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: GrantFiled: June 13, 2014Date of Patent: October 17, 2017Assignee: The General Hospital CorporationInventors: Conor L. Evans, Gabriela Apiou, Alexander J. Nichols, Emmanouil Rousakis, Zongxi Li
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Publication number: 20160338631Abstract: 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: ApplicationFiled: February 2, 2015Publication date: November 24, 2016Inventors: Zongxi Li, Conor L. Evans, Alexander J. Nichols
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Publication number: 20160159842Abstract: 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: ApplicationFiled: June 13, 2014Publication date: June 9, 2016Inventors: Conor L. Evans, Gabriela Apiou, Alexander J. Nichols, Emmanouil Rousakis, Zongxi Li
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Publication number: 20150182166Abstract: 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: ApplicationFiled: July 10, 2013Publication date: July 2, 2015Inventors: Conor L. Evans, Gabriela Apiou, Reginald Birngruber, Alexander J. Nichols, Emmanouil Rousakis, Zongxi Li
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Publication number: 20120207795Abstract: 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: ApplicationFiled: March 23, 2012Publication date: August 16, 2012Applicant: The Regents of the University of CaliforniaInventors: Jeffrey I. Zink, Andre E. Nel, Tian Xia, Zhaoxia Ji, Huan Meng, Zongxi Li, Monty Liong, Min Xue, Derrick Y. Tarn