Patents by Inventor Randall J. Lee

Randall J. Lee 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: 20240081903
    Abstract: Described here are devices, systems, and methods for closing the left atrial appendage. The methods described here utilize a closure device for closing the left atrial appendage and guides or expandable elements with ablation or abrading elements to ablate or abrade the left atrial appendage. In general, these methods include positioning a balloon at least partially within the atrial appendage, positioning a closure assembly of a closure device around an exterior of the atrial appendage, inflating the balloon, partially closing the closure assembly, ablating the interior tissue of the atrial appendage with the inflated balloon, removing the balloon from the atrial appendage, and closing the atrial appendage with the closure assembly.
    Type: Application
    Filed: November 20, 2023
    Publication date: March 14, 2024
    Applicant: AtriCure, Inc.
    Inventors: Gregory W. FUNG, Randall J. LEE, Russell PONG, Robert L. CLARK, III, Arnold M. ESCANO
  • Publication number: 20240016979
    Abstract: A novel injectable human amniotic membrane (hAM) matrix to enhance cardiac repair and/or regeneration following myocardial injury (MI) and wound healing has been developed. The invention disclosed herein provides human amniotic membranes isolated from human placenta and engineered to be a thermo-responsible, injectable gel at temperature ranges that fall within body temperature. The ultrasound-guided injection of hAM matrix into a rodent model of myocardial infarction significantly improved cardiac contractility, as measured by ejection fraction (EF), and decreased fibrosis. The disclosure provided herein demonstrates the specific engineering injectable hAM matrices and their efficacy in attenuating degenerative changes in cardiac function following MI, which has broad applications in wound healing and tissue regeneration.
    Type: Application
    Filed: December 22, 2021
    Publication date: January 18, 2024
    Applicant: The Regents of the University of California
    Inventors: Song Li, Randall J. Lee, Jeff Henry
  • Patent number: 11844566
    Abstract: Described here are devices, systems, and methods for closing the left atrial appendage. The methods described here utilize a closure device for closing the left atrial appendage and guides or expandable elements with ablation or abrading elements to ablate or abrade the left atrial appendage. In general, these methods include positioning a balloon at least partially within the atrial appendage, positioning a closure assembly of a closure device around an exterior of the atrial appendage, inflating the balloon, partially closing the closure assembly, ablating the interior tissue of the atrial appendage with the inflated balloon, removing the balloon from the atrial appendage, and closing the atrial appendage with the closure assembly.
    Type: Grant
    Filed: October 2, 2020
    Date of Patent: December 19, 2023
    Assignee: AtriCure, Inc.
    Inventors: Gregory W. Fung, Randall J. Lee, Russell Pong, Robert L. Clark, III, Arnold M. Escano
  • Publication number: 20210205010
    Abstract: Described here are devices, systems, and methods for closing the left atrial appendage. The methods described here utilize a closure device for closing the left atrial appendage and guides or expandable elements with ablation or abrading elements to ablate or abrade the left atrial appendage. In general, these methods include positioning a balloon at least partially within the atrial appendage, positioning a closure assembly of a closure device around an exterior of the atrial appendage, inflating the balloon, partially closing the closure assembly, ablating the interior tissue of the atrial appendage with the inflated balloon, removing the balloon from the atrial appendage, and closing the atrial appendage with the closure assembly.
    Type: Application
    Filed: October 2, 2020
    Publication date: July 8, 2021
    Inventors: Gregory W. FUNG, Randall J. LEE, Russell PONG, Robert L. CLARK, III, Arnold M. ESCANO
  • Publication number: 20210121077
    Abstract: Described herein are devices, systems, and methods for sensing a physical parameter of an individual. In some embodiments, a physical parameter of an individual comprises an ECG sensed from the individual. In some embodiments, a physical parameter comprises a heart rate of an individual. In some embodiments, a physical parameter comprises a blood pressure of an individual. Generally, devices, systems, and methods described herein for physical parameter measurement include an application specific integrated circuit configured to facilitate effective physical parameter measurement.
    Type: Application
    Filed: January 4, 2021
    Publication date: April 29, 2021
    Inventors: Randall J. LEE, Allan W. MAY
  • Patent number: 10799288
    Abstract: Described here are devices, systems, and methods for closing the left atrial appendage. The methods described here utilize a closure device for closing the left atrial appendage and guides or expandable elements with ablation or abrading elements to ablate or abrade the left atrial appendage. In general, these methods include positioning a balloon at least partially within the atrial appendage, positioning a closure assembly of a closure device around an exterior of the atrial appendage, inflating the balloon, partially closing the closure assembly, ablating the interior tissue of the atrial appendage with the inflated balloon, removing the balloon from the atrial appendage, and closing the atrial appendage with the closure assembly.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: October 13, 2020
    Assignee: SentreHEART LLC
    Inventors: Gregory W. Fung, Randall J. Lee, Russell Pong, Robert L. Clark, III, Arnold M. Escano
  • Patent number: 10675437
    Abstract: Aspects of the present disclosure include a catheter, such as an endovascular catheter configured for catheter rotation during a catheterization procedure, e.g., an endovascular catheterization procedure. The catheter includes a first tubular member and a second tubular member surrounding at least a portion of the central portion of the first tubular member, where the first and second tubular members are rotatable with respect to each other. Methods for performing a catheterization and kits that include the catheter are also provided.
    Type: Grant
    Filed: March 10, 2014
    Date of Patent: June 9, 2020
    Assignee: The Regents of the University of California
    Inventors: Andrew Boyle, David Majure, Randall J. Lee
  • Publication number: 20190262067
    Abstract: Described here are devices, systems, and methods for closing the left atrial appendage. The methods described here utilize a closure device for closing the left atrial appendage and guides or expandable elements with ablation or abrading elements to ablate or abrade the left atrial appendage. In general, these methods include positioning a balloon at least partially within the atrial appendage, positioning a closure assembly of a closure device around an exterior of the atrial appendage, inflating the balloon, partially closing the closure assembly, ablating the interior tissue of the atrial appendage with the inflated balloon, removing the balloon from the atrial appendage, and closing the atrial appendage with the closure assembly.
    Type: Application
    Filed: February 28, 2019
    Publication date: August 29, 2019
    Inventors: Gregory W. FUNG, Randall J. LEE, Russell PONG, Robert L. CLARK, III, Arnold M. ESCANO
  • Patent number: 10383684
    Abstract: Apparatus and methods are provided for accessing a region within a patient's body and performing a procedure therein that includes a catheter including a tubular member comprising a proximal end, a distal end sized for introduction into a patient's body, an imaging assembly on the distal end, and a substantially transparent expandable member attached to the tubular member distal end such the imaging assembly is disposed within an interior of the expandable member, the imaging assembly imaging through a surface of the expandable member. The tubular member includes a drainage lumen communicating one or more drainage ports on the tubular member distal end proximal to the balloon for aspirating fluid from the patient's body. The catheter may be used to access a pericardial space and an ablation probe may be introduced through the catheter to treat heart tissue while fluid is infused and/or aspirated via the drainage ports.
    Type: Grant
    Filed: February 29, 2016
    Date of Patent: August 20, 2019
    Inventors: Randall J. Lee, Stephen A. Leeflang, Christian S. Eversull
  • Publication number: 20190125891
    Abstract: The present invention provides compositions and methods for targeting an extracellular matrix derived (EMD) peptide predominantly to an injured tissue, as opposed to an uninjured tissue in vivo. The targeted EMD peptide facilitates the repair and/or regeneration of the injured tissue by providing a surface for cells to attach and grow, thereby facilitating the repair and/or regeneration of the injured tissue.
    Type: Application
    Filed: January 8, 2019
    Publication date: May 2, 2019
    Inventors: Randall J. Lee, Shirley Mihardja, Manley Huang, James W. Larrick
  • Patent number: 10258408
    Abstract: Described here are devices, systems, and methods for closing the left atrial appendage. The methods described here utilize a closure device for closing the left atrial appendage and guides or expandable elements with ablation or abrading elements to ablate or abrade the left atrial appendage. In general, these methods include positioning a balloon at least partially within the atrial appendage, positioning a closure assembly of a closure device around an exterior of the atrial appendage, inflating the balloon, partially closing the closure assembly, ablating the interior tissue of the atrial appendage with the inflated balloon, removing the balloon from the atrial appendage, and closing the atrial appendage with the closure assembly.
    Type: Grant
    Filed: October 31, 2014
    Date of Patent: April 16, 2019
    Assignee: SentreHEART, Inc.
    Inventors: Gregory W. Fung, Randall J. Lee, Russell Pong, Robert L. Clark, III, Arnold M. Escano
  • Publication number: 20180298088
    Abstract: This invention provides compositions of matter, articles of manufacture and methods for delivering and/or affixing a stem cell to a target tissue. This invention also provides related nucleic acids, vectors, cells, methods of production, and kits.
    Type: Application
    Filed: June 19, 2018
    Publication date: October 18, 2018
    Inventors: Lawrence G. Lum, Randall J. Lee
  • Patent number: 9907856
    Abstract: Provided are compositions for repairing an injured tissue. The composition includes carboxymethylcellulose conjugated to an extracellular matrix derived peptide, and a methylcellulose. Also provided are kits and methods for using the subject compositions.
    Type: Grant
    Filed: July 2, 2014
    Date of Patent: March 6, 2018
    Assignee: The Regents of the University of California
    Inventors: Shirley Sulastri Mihardja, Jose Antonio Gonzales, Randall J. Lee
  • Patent number: 9782258
    Abstract: Cardiomyopathy may be treated by distributing space-occupying agent within the myocardium in a pattern about one or more chambers of the heart, such that the space-modifying agent integrates into and thickens at least part of the cardiac wall about the chamber so as globally to reduce wall stress and stabilize or even reduce chamber size. Some patterns also cause a beneficial global reshaping of the chamber. These changes occur quickly and are sustainable, and have a rapid and sustainable therapeutic effect on cardiac function. Over time the relief of wall stress reduces oxygen consumption and promotes healing. Moreover, various long-term therapeutic effects may be realized depending on the properties of the space-occupying agent, including combinations with other therapeutic materials. Specific cardiac conditions treatable by these systems and methods include, for example, dilated cardiomyopathy (with or without overt aneurismal formations), congestive heart failure, and ventricular arrhythmias.
    Type: Grant
    Filed: September 7, 2007
    Date of Patent: October 10, 2017
    Assignees: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA, CARDIOPOLYMERS, INC., HENRY FORD HEALTH SYSTEM
    Inventors: Hani N. Sabbah, Randall J. Lee, Andrew G. Hinson
  • Publication number: 20170073402
    Abstract: This invention provides compositions of matter, articles of manufacture and methods for delivering and/or affixing a stem cell to a target tissue. This invention also provides related nucleic acids, vectors, cells, methods of production, and kits.
    Type: Application
    Filed: November 2, 2016
    Publication date: March 16, 2017
    Inventors: Lawrence G. Lum, Randall J. Lee
  • Publication number: 20170035902
    Abstract: The present invention provides compositions and methods for targeting an extracellular matrix derived (EMD) peptide predominantly to an injured tissue, as opposed to an uninjured tissue in vivo. The targeted EMD peptide facilitates the repair and/or regeneration of the injured tissue by providing a surface for cells to attach and grow, thereby facilitating the repair and/or regeneration of the injured tissue.
    Type: Application
    Filed: October 21, 2016
    Publication date: February 9, 2017
    Inventors: Randall J. Lee, Shirley Mihardja, Manley Huang, James W. Larrick
  • Publication number: 20160338831
    Abstract: Cardiomyopathy may be treated by distributing space-occupying agent within the myocardium in a pattern about one or more chambers of the heart, such that the space-modifying agent integrates into and thickens at least part of the cardiac wall about the chamber so as globally to reduce wall stress and stabilize or even reduce chamber size. Some patterns also cause a beneficial global reshaping of the chamber. These changes occur quickly and are sustainable, and have a rapid and sustainable therapeutic effect on cardiac function. Over time the relief of wall stress reduces oxygen consumption and promotes healing. Moreover, various long-term therapeutic effects may be realized depending on the properties of the space-occupying agent, including combinations with other therapeutic materials. Specific cardiac conditions treatable by these systems and methods include, for example, dilated cardiomyopathy (with or without overt aneurismal formations), congestive heart failure, and ventricular arrhythmias.
    Type: Application
    Filed: May 22, 2016
    Publication date: November 24, 2016
    Inventors: Hani N. Sabbah, Randall J. Lee, Andrew G. Hinson
  • Publication number: 20160249978
    Abstract: Apparatus and methods are provided for accessing a region within a patient's body and performing a procedure therein that includes a catheter including a tubular member comprising a proximal end, a distal end sized for introduction into a patient's body, an imaging assembly on the distal end, and a substantially transparent expandable member attached to the tubular member distal end such the imaging assembly is disposed within an interior of the expandable member, the imaging assembly imaging through a surface of the expandable member. The tubular member includes a drainage lumen communicating one or more drainage ports on the tubular member distal end proximal to the balloon for aspirating fluid from the patient's body. The catheter may be used to access a pericardial space and an ablation probe may be introduced through the catheter to treat heart tissue while fluid is infused and/or aspirated via the drainage ports.
    Type: Application
    Filed: February 29, 2016
    Publication date: September 1, 2016
    Inventors: Randall J. Lee, Stephen A. Leeflang, Christian S. Eversull
  • Publication number: 20160237167
    Abstract: This invention provides compositions of matter, articles of manufacture and methods for delivering and/or affixing a stem cell to a target tissue. This invention also provides related nucleic acids, vectors, cells, methods of production, and kits.
    Type: Application
    Filed: February 12, 2015
    Publication date: August 18, 2016
    Inventors: Lawrence G. Lum, Randall J. Lee
  • Patent number: 9375313
    Abstract: Cardiomyopathy may be treated by distributing space-occupying agent within the myocardium in a pattern about one or more chambers of the heart, such that the space-modifying agent integrates into and thickens at least part of the cardiac wall about the chamber so as globally to reduce wall stress and stabilize or even reduce chamber size. Some patterns also cause a beneficial global reshaping of the chamber. These changes occur quickly and are sustainable, and have a rapid and sustainable therapeutic effect on cardiac function. Over time the relief of wall stress reduces oxygen consumption and promotes healing. Moreover, various long-term therapeutic effects may be realized depending on the properties of the space-occupying agent, including combinations with other therapeutic materials. These techniques may also be used to treat localized conditions, whether or not they have progressed to cardiomyopathy.
    Type: Grant
    Filed: September 7, 2007
    Date of Patent: June 28, 2016
    Assignees: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA, HEARTFORD HEALTH SYSTEM, CARDIOPOLYMERS, INC.
    Inventors: Hani N. Sabbah, Randall J. Lee, Andrew G. Hinson