Patents by Inventor Robert A. Stevenson

Robert A. Stevenson 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: 20250256113
    Abstract: A filtered feedthrough comprises an insulator sealed in a ferrule opening. A terminal pin sealed in an insulator via hole has a first end that extends outwardly beyond an insulator device side. A filter capacitor has a square- or rectangularly-shaped dielectric supporting interleaved active and ground electrode plates. A passageway extending through the dielectric has an internal metallization. An external metallization is contacted to opposed longitudinal sides of the dielectric outer surface. The capacitor ground electrode plates extend to the opposed external metallizations. The outwardly extending terminal pin end is connected to the internal metallization in the dielectric passageway which in turn is connected to the active electrode plates. A conductive material connects the capacitor external metallization at one of the longitudinal sides to an oxide-resistant surface on the ferrule while the other external metallization is connected to an oxidized surface of the ferrule.
    Type: Application
    Filed: May 1, 2025
    Publication date: August 14, 2025
    Inventor: Robert A. Stevenson
  • Patent number: 12343548
    Abstract: An AIMD includes a ceramic base closed with a ceramic lid, both cooperatively separating body fluid and device sides. The lid and circuit board both have active and conductive pathways. A circuit board has active and ground conductive pathways. An anisotropic conductive layer disposed between the lid device side and the circuit board has a first thickness where a first conductive particle is in electrical contact with the lid and the circuit board active conductive pathways electrically connected to the active terminal of an electronic component on the circuit board, a second thickness where a second conductive particle is in electrical contact with the lid and the circuit board ground conductive pathways electrically connected to the ground terminal of the electronic component. The anisotropic conductive layer has a third, greater thickness where no conductive particles are in electrical contact with the lid and circuit board conductive active and ground pathways.
    Type: Grant
    Filed: August 7, 2024
    Date of Patent: July 1, 2025
    Assignee: Greatbatch Ltd.
    Inventors: Robert A. Stevenson, Christine A Frysz, Keith W. Seitz, Brian P Hohl, Marc Gregory Martino
  • Publication number: 20250144431
    Abstract: A filtered feedthrough comprises an insulator sealed in a ferrule opening. A terminal pin sealed in an insulator via hole has a first end that extends outwardly beyond an insulator device side. A filter capacitor adjacent to the insulator device side has a dielectric supporting interleaved active and ground electrode plates. A passageway extending through the dielectric has an internal metallization. An external metallization is on a terminated portion as opposed to an unterminated portion of the dielectric outer surface. The capacitor ground electrode plates extend to the external metallization at the terminated portion, but they do not extend to the unterminated outer surface portion. The outwardly extending terminal pin end is connected to the internal metallization in the dielectric passageway which in turn is connected to the active electrode plates. A conductive material connects the capacitor external metallization at the terminated dielectric outer surface portion to a system ground.
    Type: Application
    Filed: October 21, 2024
    Publication date: May 8, 2025
    Inventor: Robert A. Stevenson
  • Patent number: 12292355
    Abstract: An ostomy leakage detection system includes a sensing accessory, a wearable subsystem, a charging dock, and a mobile application. The sensing accessory includes a sensor region comprising a plurality of sensors for measuring resistance of an ostomy appliance, a connector region for connecting to the wearable subsystem, and a tail region extending between the sensor region and the connector region.
    Type: Grant
    Filed: May 20, 2021
    Date of Patent: May 6, 2025
    Assignee: HOLLISTER INCORPORATED
    Inventors: Jonas P. Carlsson, Ryan S. Park, Christina Augustyn, Kyle A. Matthews, Scott E. Liddle, Lauren M. Lattanzi, Stephanie Musinsky, Anthony B. Smith, Robert A. Stevenson
  • Publication number: 20250114622
    Abstract: A self-centering ceramic washer is positioned between a feedthrough and a filter circuit board. The washer has openings through which first and second terminal pins extend. A first opening has an inner arcuate portion contacting the first terminal pin and an outer perimeter portion exposing the braze sealing the terminal pin to the insulator. A second opening has an inner arcuate portion contacting the second terminal pin and an outer perimeter portion exposing the braze sealing the terminal pin to the insulator. In an imaginary configuration with the first and second washer openings superimposed one on top of the other, the cumulative arcuate distance of the inner arcuate portions about one of the terminal pins, subtracting overlap, results in a gap between the superimposed washer openings that is less than a diameter of the first and second terminal pins so that the washer is prevented from lateral movement.
    Type: Application
    Filed: December 10, 2024
    Publication date: April 10, 2025
    Applicant: Greatbatch Ltd.
    Inventors: Jason Woods, Robert A. Stevenson, Christine A. Frysz, Thomas Marzano, Keith W. Seitz
  • Publication number: 20250114621
    Abstract: A self-centering ceramic washer is positioned between a feedthrough and a filter circuit board. The washer has openings through which first and second terminal pins extend. A first opening has an inner arcuate portion contacting the first terminal pin and an outer perimeter portion exposing the braze sealing the terminal pin to the insulator. A second opening has an inner arcuate portion contacting the second terminal pin and an outer perimeter portion exposing the braze sealing the terminal pin to the insulator. In an imaginary configuration with the first and second washer openings superimposed one on top of the other, the cumulative arcuate distance of the inner arcuate portions about one of the terminal pins, subtracting overlap, results in a gap between the superimposed washer openings that is less than a diameter of the first and second terminal pins so that the washer is prevented from lateral movement.
    Type: Application
    Filed: April 11, 2024
    Publication date: April 10, 2025
    Inventors: Jason Woods, Robert A. Stevenson, Christine A. Frysz, Thomas Marzano, Keith W. Seitz
  • Patent number: 12272899
    Abstract: A feedthrough terminal pin connector assembly for an active implantable medical device (AIMD) includes first and second terminal pin connectors, each comprising a sidewall having an exterior surface spaced from an interior surface defining a connector opening extending along a longitudinal axis. At least a first portion of the sidewall is electrically conductive. An electrically conductive compliant structure is supported by the electrically conductive portion of the sidewall in each of the first and second connector openings. A common housing contains the first and second terminal pin connectors with an insulative material electrically isolating the first and second electrically conductive sidewall portions from each other. The common housing is configured to be supported on a circuit board having at least a first and a second electrical circuits with the first and second electrically conductive portions being electrically connected to the respective first and second electrical circuits.
    Type: Grant
    Filed: June 7, 2024
    Date of Patent: April 8, 2025
    Assignee: Greatbatch Ltd.
    Inventors: Thomas Marzano, Keith W. Seitz, Robert A. Stevenson, Christine A. Frysz, Marc Gregory Martino
  • Patent number: 12268889
    Abstract: A self-centering ceramic washer is positioned between a feedthrough and a filter circuit board. The washer has openings through which first and second terminal pins extend. A first opening has an inner arcuate portion contacting the first terminal pin and an outer perimeter portion exposing the braze sealing the terminal pin to the insulator. A second opening has an inner arcuate portion contacting the second terminal pin and an outer perimeter portion exposing the braze sealing the terminal pin to the insulator. In an imaginary configuration with the first and second washer openings superimposed one on top of the other, the cumulative arcuate distance of the inner arcuate portions about one of the terminal pins, subtracting overlap, results in a gap between the superimposed washer openings that is less than a diameter of the first and second terminal pins so that the washer is prevented from lateral movement.
    Type: Grant
    Filed: April 11, 2024
    Date of Patent: April 8, 2025
    Assignee: Greatbatch Ltd.
    Inventors: Jason Woods, Robert A. Stevenson, Christine A. Frysz, Thomas Marzano, Keith W. Seitz
  • Patent number: 12246183
    Abstract: A self-centering washer is positioned between a feedthrough and a filter circuit board. The washer has openings through which first and second terminal pins extend. A first opening has an inner arcuate portion contacting the first terminal pin and an outer perimeter portion exposing the braze sealing the terminal pin to the insulator. A second opening has an inner arcuate portion contacting the second terminal pin and an outer perimeter portion exposing the braze sealing the terminal pin to the insulator. In an imaginary configuration with the first and second washer openings superimposed one on top of the other, the cumulative arcuate distance of the inner arcuate portions about one of the terminal pins, subtracting overlap, results in a gap between the superimposed washer openings that is less than a diameter of the first and second terminal pins so that the washer is prevented from lateral movement.
    Type: Grant
    Filed: April 10, 2024
    Date of Patent: March 11, 2025
    Assignee: Greatbatch Ltd.
    Inventors: Jason Woods, Robert A. Stevenson, Christine A. Frysz, Thomas Marzano, Keith W. Seitz
  • Patent number: 12218458
    Abstract: A circuit board for an active implantable medical device (AIMD) has a circuit board land connected to at least one electrical circuit. A hermetic feedthrough terminal pin connector for the AIMD includes an electrical insulator hermetically sealed to an opening of an electrically conductive ferrule. A terminal pin of the feedthrough extends outwardly beyond the insulator. A terminal pin connector has an electrically conductive connector housing that is connected to the circuit board land by an electrical connection material. At least one electrically conductive prong supported by the connector housing contacts and compresses against the feedthrough terminal pin to thereby make a removable electrical connection between the circuit board and the terminal pin. An insulative material loaded with electrically insulative nanoparticles coats at least a portion of the sidewall of the connector housing and the electrical connection material connecting the connector housing to the circuit board land.
    Type: Grant
    Filed: October 4, 2023
    Date of Patent: February 4, 2025
    Assignee: Greatbatch Ltd.
    Inventors: Thomas Marzano, Keith W. Seitz, Christine A. Frysz, Robert A. Stevenson
  • Publication number: 20240390688
    Abstract: An AIMD includes a ceramic base closed with a ceramic lid, both cooperatively separating body fluid and device sides. The lid and circuit board both have active and conductive pathways. A circuit board has active and ground conductive pathways. An anisotropic conductive layer disposed between the lid device side and the circuit board has a first thickness where a first conductive particle is in electrical contact with the lid and the circuit board active conductive pathways electrically connected to the active terminal of an electronic component on the circuit board, a second thickness where a second conductive particle is in electrical contact with the lid and the circuit board ground conductive pathways electrically connected to the ground terminal of the electronic component. The anisotropic conductive layer has a third, greater thickness where no conductive particles are in electrical contact with the lid and circuit board conductive active and ground pathways.
    Type: Application
    Filed: August 7, 2024
    Publication date: November 28, 2024
    Inventors: Robert A. Stevenson, Christine A. Frysz, Keith W. Seitz, Brian P. Hohl, Marc Gregory Martino
  • Patent number: 12149021
    Abstract: A hermetic feedthrough terminal pin connector for an active implantable medical device (AIMD) includes an electrical insulator hermetically sealed to an opening of an electrically conductive ferrule. A feedthrough terminal pin is hermetically sealed to and disposed through the insulator, the feedthrough terminal pin extending outwardly beyond the insulator on the inside of the casing of the AIMD. A circuit board is disposed on the inside of the casing of the AIMD. A terminal pin connector includes: an electrically conductive connector housing disposed on the circuit board, wherein the connector housing is electrically connected to at least one electrical circuit disposed on the circuit board; and at least one electrically conductive prong supported by the connector housing, the at least one prong contacting and compressed against the feedthrough terminal pin, the at least one prong making a removable electrical connection.
    Type: Grant
    Filed: December 23, 2021
    Date of Patent: November 19, 2024
    Assignee: Greatbatch Ltd.
    Inventors: Thomas Marzano, Keith W. Seitz, Robert A. Stevenson, Christine A. Frysz, Marc Gregory Martino
  • Patent number: 12102831
    Abstract: The present invention changes the magnet-mode of an active implantable medical device (AIMD) using a static strip magnet comprising at least a first, second and third magnet. The electronic circuits of the AIMD have been programmed to register when the static strip magnet has been swiped across the AIMD so that when the magnetic field-detection sensor detects a defined north and south polarity sequence of the first, second and third magnets, the electronic circuits have been programmed to enter into magnet-mode with electrical stimulation therapy of the body tissue and/or electrical sensing of biological signals from the body tissue being suspended, maintained in a preset mode, or placed in a programmed mode.
    Type: Grant
    Filed: January 27, 2023
    Date of Patent: October 1, 2024
    Assignee: Greatbatch Ltd.
    Inventors: Michael C. Steckner, Robert A. Stevenson
  • Publication number: 20240322483
    Abstract: A feedthrough terminal pin connector assembly for an active implantable medical device (AIMD) includes first and second terminal pin connectors, each comprising a sidewall having an exterior surface spaced from an interior surface defining a connector opening extending along a longitudinal axis. At least a first portion of the sidewall is electrically conductive. An electrically conductive compliant structure is supported by the electrically conductive portion of the sidewall in each of the first and second connector openings. A common housing contains the first and second terminal pin connectors with an insulative material electrically isolating the first and second electrically conductive sidewall portions from each other. The common housing is configured to be supported on a circuit board having at least a first and a second electrical circuits with the first and second electrically conductive portions being electrically connected to the respective first and second electrical circuits.
    Type: Application
    Filed: June 7, 2024
    Publication date: September 26, 2024
    Inventors: Thomas Marzano, Keith W. Seitz, Robert A. Stevenson, Christine A. Frysz, Marc Gregory Martino
  • Patent number: 12064639
    Abstract: A feedthrough for an AIMD includes a ferrule with an insulator hermetically sealing a ferrule opening, both cooperatively separating a body fluid side from a device side. A circuit board disposed adjacent to the insulator device side has a ground plate or ground trace electrically connected to a circuit board ground conductive pathway disposed in a circuit board ground via hole. An anisotropic conductive layer disposed between the circuit board and the insulator device side has an electrically insulative matrix supporting a plurality of electrically conductive particles. The anisotropic conductive layer has a first thickness where at least one first electrically conductive particle is longitudinally aligned and in electrical contact with the ferrule and the circuit board ground conductive pathway electrically connected to the at least one circuit board ground plate or ground trace.
    Type: Grant
    Filed: February 2, 2021
    Date of Patent: August 20, 2024
    Assignee: Greatbatch Ltd.
    Inventors: Robert A. Stevenson, Christine A. Frysz, Keith W. Seitz, Brian P Hohl, Marc Gregory Martino
  • Patent number: 12017065
    Abstract: A hermetically sealed feedthrough assembly for an active implantable medical device having an oxide-resistant electrical attachment for connection to an EMI filter, an EMI filter circuit board, an AIMD circuit board, or AIMD electronics. The oxide-resistant electrical attachment, including an oxide-resistant coating layer that is disposed on the device side surface of the hermetic seal ferrule over which an optional ECA stripe may be provided. The optional ECA stripe may comprise one of a thermal-setting electrically conductive adhesive, an electrically conductive polymer, an electrically conductive epoxy, an electrically conductive silicone, an electrically conductive polyamide, or an electrically conductive polyimide, such as those manufactured by Ablestick Corporation. The oxide-free coating layer may comprise one of gold, platinum, palladium, silver, iridium, rhenium, rhodium, tantalum, tungsten, niobium, zirconium, vanadium, and combinations or alloys thereof.
    Type: Grant
    Filed: May 10, 2021
    Date of Patent: June 25, 2024
    Assignee: Greatbatch Ltd.
    Inventors: Christine A. Frysz, Robert A. Stevenson, Jason Woods
  • Publication number: 20240189781
    Abstract: A hollow expansion chamber of the present invention is configured to temporarily contain an expansion of bubbles during an aeration process for aerating a liquid, where a chamber body of the expansion chamber has a rounded shape. When moving circumferentially downward along the chamber body starting from a maximum inside diameter, the rounded shape of a bottom portion has a first integral transition that is a tangential transition to a first frustoconical shape. Continuing moving circumferentially downward, the first frustoconical shape has a second integral transition to a second frustoconical shape. The second frustoconical shape at a distal end has a bottom opening configured to fit within an opened bottleneck. The first frustoconical shape may have a minimum angle of 5 degrees relative to a horizontal plane. The second integral transition may be a radial second integral transition having an inside surface radius of at least 0.25 inches.
    Type: Application
    Filed: February 19, 2024
    Publication date: June 13, 2024
    Inventors: Robert A. Stevenson, Wendy L. Stevenson, Ryan A. Stevenson, Jennifer L. Stevenson
  • Patent number: 11980766
    Abstract: A self-centering washer is positioned between the feedthrough and filter capacitor of a filtered feedthrough. The washer has openings through which first and second terminal pins extend. A first opening has an inner arcuate portion contacting the first terminal pin and an outer perimeter portion exposing the braze sealing the terminal pin to the insulator. A second opening has an inner arcuate portion contacting the second terminal pin and an outer perimeter portion exposing the braze sealing the terminal pin to the insulator. In an imaginary configuration with the first and second washer openings superimposed one on top of the other, the cumulative arcuate distance of the inner arcuate portions about one of the terminal pins, subtracting overlap, results in a gap between the superimposed washer openings that is less than a diameter of the first and second terminal pins so that the washer is prevented from lateral movement.
    Type: Grant
    Filed: October 6, 2023
    Date of Patent: May 14, 2024
    Assignee: Greatbatch Ltd.
    Inventors: Jason Woods, Robert A. Stevenson, Christine A. Frysz, Thomas Marzano, Keith W. Seitz
  • Publication number: 20240115867
    Abstract: The high-voltage and/or high-frequency pulse dielectric breakdown strength (DBS) of an implantable medical device is increased by strategically positioning insulation materials on or adjacent to the external surfaces of a filter capacitor. Dielectric breakdown strength is further increased by adding polymeric or ceramic nanoscale metal oxide insulative powders to the insulation materials.
    Type: Application
    Filed: October 5, 2023
    Publication date: April 11, 2024
    Inventors: Robert A. Stevenson, Christine A. Frysz, Keith W. Seitz, Thomas Marzano, Jason Woods
  • Patent number: D1031368
    Type: Grant
    Filed: August 26, 2021
    Date of Patent: June 18, 2024
    Inventors: Robert A. Stevenson, Wendy L. Stevenson, Jennifer L. Stevenson, Ryan A. Stevenson