Patents by Inventor Brian Steffens

Brian Steffens 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: 20220023520
    Abstract: An oxygenator apparatus for use in an extracorporeal circuit. The apparatus includes a housing and a membrane assembly disposed within the housing. The membrane assembly includes a first plurality of gas exchange elements disposed in a first zone and a second plurality of gas exchange elements disposed in a second zone. The second zone is arranged concentrically around the first zone. The first and second plurality of gas exchange elements are fluidly open along a body and fluidly separated along a distal end. The first zone is configured to be fluidly coupled to an oxygen source and the second zone is configured to be fluidly coupled to a negative pressure source. A blood flow path includes a generally radial flow through the first zone to add oxygen to the blood and the second zone to separate gaseous micro emboli from the blood through the plurality of gas exchange elements.
    Type: Application
    Filed: October 8, 2021
    Publication date: January 27, 2022
    Applicant: Medtronic, Inc.
    Inventors: John Knoll, Neil Nye, Brian Steffens, Michael Van Driel
  • Patent number: 11141517
    Abstract: An oxygenator apparatus for use in an extracorporeal circuit. The apparatus includes a housing and a membrane assembly disposed within the housing. The membrane assembly includes a first plurality of gas exchange elements disposed in a first zone and a second plurality of gas exchange elements disposed in a second zone. The second zone is arranged concentrically around the first zone. The first and second plurality of gas exchange elements are fluidly open along a body and fluidly separated along a distal end. The first zone is configured to be fluidly coupled to an oxygen source and the second zone is configured to be fluidly coupled to a negative pressure source. A blood flow path includes a generally radial flow through the first zone to add oxygen to the blood and the second zone to separate gaseous micro emboli from the blood through the plurality of gas exchange elements.
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: October 12, 2021
    Assignee: Medtronic, Inc.
    Inventors: John I. Knoll, Neil Nye, Brian Steffens, Michael Van Driel
  • Publication number: 20210162110
    Abstract: Systems and methods for monitoring oxygenator performance in extracorporeal circuit systems or the like. More particularly, the disclosure relates to systems and methods including a controller programmed to determine oxygenator apparatus flow impedance as a function of an inlet pressure measurement, an outlet pressure measurement and a blood flow rate measurement. The systems and methods may include a communication device that receives signals from the controller to communicate information regarding oxygenator apparatus performance.
    Type: Application
    Filed: February 11, 2021
    Publication date: June 3, 2021
    Applicant: Medtronic Vascular, Inc.
    Inventors: Brian Steffens, James Beavers, John Knoll, Todd Romine
  • Patent number: 10940257
    Abstract: Systems and methods for monitoring oxygenator performance in extracorporeal circuit systems or the like. More particularly, the disclosure relates to systems and methods including a controller programmed to determine oxygenator apparatus flow impedance as a function of an inlet pressure measurement, an outlet pressure measurement and a blood flow rate measurement. The systems and methods may include a communication device that receives signals from the controller to communicate information regarding oxygenator apparatus performance.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: March 9, 2021
    Assignee: Medtronic Vascular, Inc.
    Inventors: Brian Steffens, James Beavers, John Knoll, Todd Romine
  • Publication number: 20200129687
    Abstract: An oxygenator apparatus for use in an extracorporeal circuit. The apparatus includes a housing and a membrane assembly disposed within the housing. The membrane assembly includes a first plurality of gas exchange elements disposed in a first zone and a second plurality of gas exchange elements disposed in a second zone. The second zone is arranged concentrically around the first zone. The first and second plurality of gas exchange elements are fluidly open along a body and fluidly separated along a distal end. The first zone is configured to be fluidly coupled to an oxygen source and the second zone is configured to be fluidly coupled to a negative pressure source. A blood flow path includes a generally radial flow through the first zone to add oxygen to the blood and the second zone to separate gaseous micro emboli from the blood through the plurality of gas exchange elements.
    Type: Application
    Filed: October 25, 2018
    Publication date: April 30, 2020
    Inventors: John I. Knoll, Neil Nye, Brian Steffens, Michael Van Driel
  • Publication number: 20180126057
    Abstract: Systems and methods for monitoring oxygenator performance in extracorporeal circuit systems or the like. More particularly, the disclosure relates to systems and methods including a controller programmed to determine oxygenator apparatus flow impedance as a function of an inlet pressure measurement, an outlet pressure measurement and a blood flow rate measurement. The systems and methods may include a communication device that receives signals from the controller to communicate information regarding oxygenator apparatus performance.
    Type: Application
    Filed: November 7, 2017
    Publication date: May 10, 2018
    Inventors: Brian Steffens, James Beavers, John Knoll, Todd Romine
  • Patent number: 8795591
    Abstract: An apparatus for oxygenating blood including a housing and an oxygenator bundle. The housing defines a primary chamber, a blood inlet port open to the primary chamber, and a blood outlet region. The outlet region includes a blood outlet port, an outlet chamber open to the outlet port, and a partition. The partition establishes spaced apart, first and second passageways from the primary chamber to the outlet chamber. The oxygenator bundle is disposed within the primary chamber. A blood flow path is formed from the blood inlet port, through the oxygenator bundle and to the blood outlet port, and includes first and second outlet flow paths within the outlet chamber via the first and second passageways, respectively. The first and second outlet blood flow paths merge at the blood outlet port. A dual port blood outlet is created, increasing mixing of blood immediately upstream of the outlet port.
    Type: Grant
    Filed: February 15, 2012
    Date of Patent: August 5, 2014
    Assignee: Medtronic, Inc.
    Inventors: Stephen Roller, Christopher Plott, Alford McLevish, Gregory Hake, Brian Steffens
  • Publication number: 20140050617
    Abstract: An apparatus for oxygenating blood including a housing and an oxygenator bundle. The housing defines a primary chamber, a blood inlet port open to the primary chamber, and a blood outlet region. The outlet region includes a blood outlet port, an outlet chamber open to the outlet port, and a partition. The partition establishes spaced apart, first and second passageways from the primary chamber to the outlet chamber. The oxygenator bundle is disposed within the primary chamber. A blood flow path is formed from the blood inlet port, through the oxygenator bundle and to the blood outlet port, and includes first and second outlet flow paths within the outlet chamber via the first and second passageways, respectively. The first and second outlet blood flow paths merge at the blood outlet port. A dual port blood outlet is created, increasing mixing of blood immediately upstream of the outlet port.
    Type: Application
    Filed: February 15, 2012
    Publication date: February 20, 2014
    Applicant: Medtronic, Inc.
    Inventors: Stephen Roller, Chistopher Plott, Alford McLevish, Gregory Hake, Brian Steffens
  • Publication number: 20130209314
    Abstract: An apparatus for oxygenating blood including a housing and an oxygenator bundle. The housing defines a primary chamber, a blood inlet port open to the primary chamber, and a blood outlet region. The outlet region includes a blood outlet port, an outlet chamber open to the outlet port, and a partition. The partition establishes spaced apart, first and second passageways from the primary chamber to the outlet chamber. The oxygenator bundle is disposed within the primary chamber. A blood flow path is formed from the blood inlet port, through the oxygenator bundle and to the blood outlet port, and includes first and second outlet flow paths within the outlet chamber via the first and second passageways, respectively. The first and second outlet blood flow paths merge at the blood outlet port. A dual port blood outlet is created, increasing mixing of blood immediately upstream of the outlet port.
    Type: Application
    Filed: February 15, 2012
    Publication date: August 15, 2013
    Applicant: Medtronic, Inc.
    Inventors: Stephen Roller, Chistopher Plott, Alford McLevish, Gregory Hake, Brian Steffens
  • Publication number: 20080044852
    Abstract: The present invention provides biological compositions and methods for making the same.
    Type: Application
    Filed: April 26, 2007
    Publication date: February 21, 2008
    Inventors: Tessy Kanayinkal, Laura Yonce, Debra Mullins-Hirte, Trevor Huang, Rohit Cariappa, Kenneth Merte, James Keogh, Kevin McIntosh, Brian Steffens, Asha Nayak, Erick Johnson