Patents by Inventor Steven J. May

Steven J. May 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: 11344735
    Abstract: Medical devices include a separate enclosure that houses a battery and electrically isolates the battery from external conditions such as any metal enclosures and ultimately isolates the battery from body fluids. Thus, the separate enclosure attaches to a housing of a medical device and provides for modularity of the battery which allows, for instance, different size batteries to be used with the same medical device design. The separate enclosure further prevents stimulation current from leaking back to the battery housing by providing the electrical isolation.
    Type: Grant
    Filed: June 22, 2019
    Date of Patent: May 31, 2022
    Assignee: MEDTRONIC, INC.
    Inventors: Erik J. Hovland, Rajesh V. Iyer, Steven J. May, Gordon O. Munns, Wesley A. Santa
  • Patent number: 11065460
    Abstract: In some examples, a battery assembly for an implantable medical device may include an electrode stack comprising a plurality of electrode plates. The plurality of electrode plates may comprise a first electrode plate including a first tab extending from the first electrode plate and a second electrode plate including a second tab extending from the second electrode plate, an alignment member extending through the first tab and the second tab, and a weld on a side of the electrode stack extending from the first tab to the second tab, wherein the weld penetrates into the alignment member.
    Type: Grant
    Filed: May 30, 2019
    Date of Patent: July 20, 2021
    Assignee: Medtronic, Inc.
    Inventors: Hailiang Zhao, Steven J. May
  • Publication number: 20200381693
    Abstract: In some examples, a battery assembly for an implantable medical device may include an electrode stack comprising a plurality of electrode plates. The plurality of electrode plates may comprise a first electrode plate including a first tab extending from the first electrode plate and a second electrode plate including a second tab extending from the second electrode plate, an alignment member extending through the first tab and the second tab, and a weld on a side of the electrode stack extending from the first tab to the second tab, wherein the weld penetrates into the alignment member.
    Type: Application
    Filed: May 30, 2019
    Publication date: December 3, 2020
    Inventors: Hailiang Zhao, Steven J. May
  • Publication number: 20190308023
    Abstract: Medical devices include a separate enclosure that houses a battery and electrically isolates the battery from external conditions such as any metal enclosures and ultimately isolates the battery from body fluids. Thus, the separate enclosure attaches to a housing of a medical device and provides for modularity of the battery which allows, for instance, different size batteries to be used with the same medical device design. The separate enclosure further prevents stimulation current from leaking back to the battery housing by providing the electrical isolation.
    Type: Application
    Filed: June 22, 2019
    Publication date: October 10, 2019
    Inventors: Erik J. Hovland, Rajesh V. Iyer, Steven J. May, Gordon O. Munns, Wesley A. Santa
  • Patent number: 10328273
    Abstract: Medical devices include a separate enclosure that houses a battery and electrically isolates the battery from external conditions such as any metal enclosures and ultimately isolates the battery from body fluids. Thus, the separate enclosure attaches to a housing of a medical device and provides for modularity of the battery which allows, for instance, different size batteries to be used with the same medical device design. The separate enclosure further prevents stimulation current from leaking back to the battery housing by providing the electrical isolation.
    Type: Grant
    Filed: November 10, 2015
    Date of Patent: June 25, 2019
    Assignee: MEDTRONIC, INC.
    Inventors: Erik J. Hovland, Rajesh V. Iyer, Steven J. May, Gordon O. Munns, Wesley A. Santa
  • Patent number: 10209323
    Abstract: Ferromagnetic Group III-V semiconductor/non-magnetic Group III-V semiconductor heterojunctions, with a magnetodiode device, to detect heterojunction magnetoresistance responsive to an applied magnetic field.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: February 19, 2019
    Assignee: Northwestern University
    Inventors: Bruce W. Wessels, Steven J. May
  • Patent number: 9954245
    Abstract: A mandrel for use in a battery assembly may include a positive mandrel portion and a negative mandrel portion. Each of the mandrel portions may include a connector element coupling region and an electrode coupling region. The connector element coupling region may be configured to be coupled to a connector element and the electrode coupling region may be configured to be coupled to an electrode.
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: April 24, 2018
    Assignee: MEDTRONIC, INC.
    Inventors: Jay T. Rassat, Michael J. Nidelkoff, Jeffrey J. Clayton, Seth M. Humphrys, Paul B. Aamodt, Steven J. May
  • Publication number: 20170269172
    Abstract: Ferromagnetic Group III-V semiconductor/non-magnetic Group III-V semiconductor heterojunctions, with a magnetodiode device, to detect heterojunction magnetoresistance responsive to an applied magnetic field.
    Type: Application
    Filed: March 31, 2017
    Publication date: September 21, 2017
    Inventors: Bruce W. Wessels, Steven J. May
  • Patent number: 9612299
    Abstract: Ferromagnetic Group III-V semiconductor/non-magnetic Group III-V semiconductor heterojunctions, with a magnetodiode device, to detect heterojunction magnetoresistance responsive to an applied magnetic field.
    Type: Grant
    Filed: May 5, 2015
    Date of Patent: April 4, 2017
    Assignee: Northwestern University
    Inventors: Bruce W. Wessels, Steven J. May
  • Patent number: 9362570
    Abstract: A battery assembly for a medical device includes an elongate cathode, an elongate anode, an electrolyte, and an elongate housing assembly encapsulating the cathode, the anode, and the electrolyte. The battery assembly also includes a first electrode exposed from and electrically insulated from the housing assembly. One of the anode and the cathode is electrically coupled to the first electrode, and the other of the anode and the cathode is electrically coupled to the housing assembly. Respective axes of the cathode and the anode are substantially parallel to an axis of the housing assembly, and the cathode and anode each include a flat portion that face each other.
    Type: Grant
    Filed: October 13, 2014
    Date of Patent: June 7, 2016
    Assignee: Medtronic, Inc.
    Inventors: Jeffrey S. Lund, Steven J. May, Donald R. Merritt, Hailiang Zhao
  • Publication number: 20160129264
    Abstract: Medical devices include a separate enclosure that houses a battery and electrically isolates the battery from external conditions such as any metal enclosures and ultimately isolates the battery from body fluids. Thus, the separate enclosure attaches to a housing of a medical device and provides for modularity of the battery which allows, for instance, different size batteries to be used with the same medical device design. The separate enclosure further prevents stimulation current from leaking back to the battery housing by providing the electrical isolation.
    Type: Application
    Filed: November 10, 2015
    Publication date: May 12, 2016
    Inventors: Erik J. Hovland, Rajesh V. Iyer, Steven J. May, Gordon O. Munns, Wesley A. Santa
  • Patent number: 9299962
    Abstract: An encasement for an electrochemical cell and method of making such encasement is discloses. The design of the encasement results in an encasement having an area of high stress located away from the weld zone area of the encasement, where the cover and the case are welded together.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: March 29, 2016
    Assignee: Medtronic, Inc.
    Inventors: Hailiang Zhao, Steven J. May, Markus W. Reiterer, Bernard F. Heller
  • Publication number: 20160018486
    Abstract: Ferromagnetic Group III-V semiconductor/non-magnetic Group III-V semiconductor heterojunctions, with a magnetodiode device, to detect heterojunction magnetoresistance responsive to an applied magnetic field.
    Type: Application
    Filed: May 5, 2015
    Publication date: January 21, 2016
    Inventors: Bruce W. Wessels, Steven J. May
  • Publication number: 20150372336
    Abstract: A mandrel for use in a battery assembly may include a positive mandrel portion and a negative mandrel portion. Each of the mandrel portions may include a connector element coupling region and an electrode coupling region. The connector element coupling region may be configured to be coupled to a connector element and the electrode coupling region may be configured to be coupled to an electrode.
    Type: Application
    Filed: August 31, 2015
    Publication date: December 24, 2015
    Inventors: Jay T. RASSAT, Michael J. Nidelkoff, Jeffrey J. Clayton, Seth M. Humphrys, Paul B. Aamodt, Steven J. May
  • Patent number: 9130223
    Abstract: A mandrel for use in a battery assembly may include a positive mandrel portion and a negative mandrel portion. Each of the mandrel portions may include a connector element coupling region and an electrode coupling region. The connector element coupling region may be configured to be coupled to a connector element and the electrode coupling region may be configured to be coupled to an electrode.
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: September 8, 2015
    Assignee: Medtronic, Inc.
    Inventors: Jay T. Rassat, Michael J. Nidelkoff, Jeffrey J. Clayton, Seth M. Humphrys, Paul B. Aamodt, Steven J. May
  • Patent number: 9099720
    Abstract: A battery assembly for a medical device includes an elongate cathode, an elongate anode, an electrolyte, and an elongate housing assembly encapsulating the cathode, the anode, and the electrolyte. The battery assembly also includes a first electrode exposed from and electrically insulated from the housing assembly. One of the anode and the cathode is electrically coupled to the first electrode, and the other of the anode and the cathode is electrically coupled to the housing assembly. Respective axes of the cathode and the anode are substantially parallel to an axis of the housing assembly, and the cathode and anode each include a flat portion that face each other.
    Type: Grant
    Filed: August 28, 2009
    Date of Patent: August 4, 2015
    Assignee: Medtronic, Inc.
    Inventors: Jeffrey S. Lund, Steven J. May, Donald R. Merritt, Hailiang Zhao
  • Patent number: 9024370
    Abstract: Ferromagnetic Group III-V semiconductor/non-magnetic Group III-V semiconductor heterojunctions, with a magnetodiode device, to detect heterojunction magnetoresistance responsive to an applied magnetic field.
    Type: Grant
    Filed: April 29, 2011
    Date of Patent: May 5, 2015
    Assignee: Northwestern University
    Inventors: Bruce W. Wessels, Steven J. May
  • Publication number: 20150030916
    Abstract: A battery assembly for a medical device includes an elongate cathode, an elongate anode, an electrolyte, and an elongate housing assembly encapsulating the cathode, the anode, and the electrolyte. The battery assembly also includes a first electrode exposed from and electrically insulated from the housing assembly. One of the anode and the cathode is electrically coupled to the first electrode, and the other of the anode and the cathode is electrically coupled to the housing assembly. Respective axes of the cathode and the anode are substantially parallel to an axis of the housing assembly, and the cathode and anode each include a flat portion that face each other.
    Type: Application
    Filed: October 13, 2014
    Publication date: January 29, 2015
    Inventors: Jeffrey S. LUND, Steven J. MAY, Donald R. MERRITT, Hailiang ZHAO
  • Publication number: 20130302665
    Abstract: An encasement for an electrochemical cell and method of making such encasement is discloses. The design of the encasement results in an encasement having an area of high stress located away from the weld zone area of the encasement, where the cover and the case are welded together.
    Type: Application
    Filed: March 14, 2013
    Publication date: November 14, 2013
    Applicant: MEDTRONIC, INC.
    Inventors: Hailiang Zhao, Steven J. May, Markus W. Reiterer, Bernard F. Heller
  • Publication number: 20130288116
    Abstract: A mandrel for use in a battery assembly may include a positive mandrel portion and a negative mandrel portion. Each of the mandrel portions may include a connector element coupling region and an electrode coupling region. The connector element coupling region may be configured to be coupled to a connector element and the electrode coupling region may be configured to be coupled to an electrode.
    Type: Application
    Filed: April 26, 2012
    Publication date: October 31, 2013
    Applicant: Medtronic, Inc.
    Inventors: Jay T. Rassat, Michael J. Nidelkoff, Jeffrey J. Clayton, Seth M. Humphrys, Paul B. Aamodt, Steven J. May