Patents by Inventor Keith A. Knisley

Keith A. Knisley 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).

  • Patent number: 11938294
    Abstract: The present disclosure relates to implantable encapsulation devices for housing a biological moiety or a therapeutic device that contains a biological moiety. Particularly, aspects of the present disclosure are directed to an implantable apparatus that includes a distal end, a proximal end, a manifold including at least one access port positioned either at the distal end or the proximal end, and a plurality of containment tubes affixed to the manifold and in fluid communication with the at least one access port. Additionally, the encapsulation device may contain a flush port and a tube that are fluidly connected to the manifold. The containment tubes may contain therein a biological moiety (e.g., cells) or a therapeutic device (e.g. a cell encapsulation member).
    Type: Grant
    Filed: January 10, 2022
    Date of Patent: March 26, 2024
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: Edward H. Cully, Edward Gunzel, Keith Knisley, Greg Rusch, Lauren Zambotti
  • Patent number: 11504454
    Abstract: The invention is an improved biocompatible surface for a variety of medical purposes. The biocompatible surface employs a unique tight microstructure that demonstrates enhanced cellular response in the body, particularly when placed in contact with blood. As a blood contact surface, the present invention can be beneficially employed in a wide variety of implantable devices and in many other devices and equipment that come in contact with blood.
    Type: Grant
    Filed: May 18, 2015
    Date of Patent: November 22, 2022
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: Keith A. Knisley, Vishnu T. Marla, Rachel Radspinner, Paul A. Silvagni, Jason J. Strid, Michael J. Vonesh
  • Publication number: 20220126076
    Abstract: The present disclosure relates to implantable encapsulation devices for housing a biological moiety or a therapeutic device that contains a biological moiety. Particularly, aspects of the present disclosure are directed to an implantable apparatus that includes a distal end, a proximal end, a manifold including at least one access port positioned either at the distal end or the proximal end, and a plurality of containment tubes affixed to the manifold and in fluid communication with the at least one access port. Additionally, the encapsulation device may contain a flush port and a tube that are fluidly connected to the manifold. The containment tubes may contain therein a biological moiety (e.g., cells) or a therapeutic device (e.g. a cell encapsulation member).
    Type: Application
    Filed: January 10, 2022
    Publication date: April 28, 2022
    Inventors: Edward H. Cully, Edward Gunzel, Keith Knisley, Greg Rusch, Lauren Zambotti
  • Publication number: 20210268245
    Abstract: The present disclosure relates to implantable encapsulation devices for housing a biological moiety or a therapeutic device that contains a biological moiety. Particularly, aspects of the present disclosure are directed to an implantable apparatus that includes a distal end, a proximal end, a manifold including at least one access port positioned either at the distal end or the proximal end, and a plurality of containment tubes affixed to the manifold and in fluid communication with the at least one access port. Additionally, the encapsulation device may contain a flush port and a tube that are fluidly connected to the manifold. The containment tubes may contain therein a biological moiety (e.g., cells) or a therapeutic device (e.g. a cell encapsulation member).
    Type: Application
    Filed: May 19, 2021
    Publication date: September 2, 2021
    Inventors: Edward H. Cully, Edward Gunzel, Keith Knisley, Greg Rusch, Lauren Zambotti
  • Patent number: 11052230
    Abstract: The present disclosure relates to implantable encapsulation devices for housing a biological moiety or a therapeutic device that contains a biological moiety. Particularly, aspects of the present disclosure are directed to an implantable apparatus that includes a distal end, a proximal end, a manifold including at least one access port positioned either at the distal end or the proximal end, and a plurality of containment tubes affixed to the manifold and in fluid communication with the at least one access port. Additionally, the encapsulation device may contain a flush port and a tube that are fluidly connected to the manifold. The containment tubes may contain therein a biological moiety (e.g., cells) or a therapeutic device (e.g. a cell encapsulation member).
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: July 6, 2021
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: Edward H. Cully, Edward Gunzel, Keith Knisley, Greg Rusch, Lauren Zambotti
  • Publication number: 20180126134
    Abstract: The present disclosure relates to implantable encapsulation devices for housing a biological moiety or a therapeutic device that contains a biological moiety. Particularly, aspects of the present disclosure are directed to an implantable apparatus that includes a distal end, a proximal end, a manifold including at least one access port positioned either at the distal end or the proximal end, and a plurality of containment tubes affixed to the manifold and in fluid communication with the at least one access port. Additionally, the encapsulation device may contain a flush port and a tube that are fluidly connected to the manifold. The containment tubes may contain therein a biological moiety (e.g., cells) or a therapeutic device (e.g. a cell encapsulation member).
    Type: Application
    Filed: November 7, 2017
    Publication date: May 10, 2018
    Inventors: Edward H. Cully, Edward Gunzel, Keith Knisley, Greg Rusch, Lauren Zambotti
  • Patent number: 9775933
    Abstract: The invention is an improved biocompatible surface for a variety of medical purposes. The biocompatible surface employs a unique tight microstructure that demonstrates enhanced cellular response in the body, particularly when placed in contact with blood. As a blood contact surface, the present invention can be beneficially employed in a wide variety of implantable devices and in many other devices and equipment that come in contact with blood.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: October 3, 2017
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: Keith A. Knisley, Vishnu T. Marla, Rachel Radspinner, Paul A. Silvagni, Jason J. Strid, Michael J. Vonesh
  • Publication number: 20150258250
    Abstract: The invention is an improved biocompatible surface for a variety of medical purposes. The biocompatible surface employs a unique tight microstructure that demonstrates enhanced cellular response in the body, particularly when placed in contact with blood. As a blood contact surface, the present invention can be beneficially employed in a wide variety of implantable devices and in many other devices and equipment that come in contact with blood.
    Type: Application
    Filed: May 18, 2015
    Publication date: September 17, 2015
    Inventors: Keith A. Knisley, Vishnu T. Marla, Rachel Radspinner, Paul A. Silvagni, Jason J. Strid, Michael J. Vonesh
  • Publication number: 20130231733
    Abstract: The invention is an improved biocompatible surface for a variety of medical purposes. The biocompatible surface employs a unique tight microstructure that demonstrates enhanced cellular response in the body, particularly when placed in contact with blood. As a blood contact surface, the present invention can be beneficially employed in a wide variety of implantable devices and in many other devices and equipment that come in contact with blood.
    Type: Application
    Filed: February 22, 2013
    Publication date: September 5, 2013
    Applicant: W. L. GORE & ASSOCIATES, INC.
    Inventors: KEITH A. KNISLEY, VISHNU T. MARLA, RACHEL RADSPINNER, PAUL A. SILVAGNI, JASON J. STRID, MICHAEL J. VONESH
  • Patent number: 5173160
    Abstract: New synthesis and analysis procedures for novel crosslinked polyamines and ampholytes. Polyamines are crosslinked with tartaric acid ester, malonic acid ester, or polycarboxylic acid esters of the citric acid cycle. The resulting crosslinked polyamine may further react with other compounds such as an .alpha., .beta.-unsaturated or .alpha.-halo unsaturated carboxylic acids to prepare new ampholyte mixtures. The resulting novel ampholytes exhibit greater heterogeneity and complexity than presently prepared ampholytes, and can be used in analytical and preparative isoelectric focusing processes.Novel ampholyte analysis process entails analyzing chemical compounds, usually ampholytes, used in isoelectric focusing processes. The ampholyte is isoelectrically focused on an immobilized pH gradient, and then immersed in a picric acid solution to cGOVERNMENT OWNERSHIPThe funding for the subject matter described herein was partially provided by the U.S. Government under Grant Nos. NAS 9-17403 and NIH AI-20590. The U.S.
    Type: Grant
    Filed: February 27, 1991
    Date of Patent: December 22, 1992
    Assignee: Board of Regents, The University of Texas System
    Inventors: L. Scott Rodkey, Keith A. Knisley