Patents by Inventor John A. Simpson

John A. Simpson 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: 20250032678
    Abstract: Embodiments are directed to radiopaque implantable structures (e.g., stents) formed of cobalt-based alloys that comprise cobalt, chromium, tungsten, and nickel, and methods for their manufacture. Tungsten is present above its solubility limit (about 15%) at ambient temperature, but is still only present as a super-saturated, primarily single-phase material exhibiting an FCC microcrystalline structure.
    Type: Application
    Filed: October 15, 2024
    Publication date: January 30, 2025
    Inventors: John A. Simpson, Puneet Kamal Singh Gill
  • Publication number: 20250032280
    Abstract: A stent comprising a cobalt-based alloy comprising at least 18 weight % cobalt (Co), 10-25 weight % chromium (Cr), 10-15 weight % tungsten (W), optionally, up to 2 weight % of manganese (Mn), optionally, up to 3 weight % iron (Fe), and 10-65 weight % of a metal member selected from a platinum group metal.
    Type: Application
    Filed: October 14, 2024
    Publication date: January 30, 2025
    Inventors: John A. Simpson, Puneet Kamal Singh Gill, Pamela A. Kramer-Brown
  • Patent number: 12151049
    Abstract: Embodiments are directed to radiopaque implantable structures (e.g., stents) formed of cobalt-based alloys that comprise cobalt, chromium, tungsten, and nickel, and methods for their manufacture. Tungsten is present above its solubility limit (about 15%) at ambient temperature, but is still only present as a super-saturated, primarily single-phase material exhibiting an FCC microcrystalline structure.
    Type: Grant
    Filed: October 12, 2020
    Date of Patent: November 26, 2024
    Assignee: Abbott Cardiovascular Systems, Inc.
    Inventors: John A. Simpson, Puneet Kamal Singh Gill
  • Patent number: 12150872
    Abstract: A stent comprising a cobalt-based alloy comprising 18-50 weight % cobalt (Co), 10-25 weight % chromium (Cr), 10-15 weight % tungsten (W), 0-2 weight % of manganese (Mn), 0-3 weight % iron (Fe), and 10-65 weight % metal member selected from a platinum group metal.
    Type: Grant
    Filed: July 3, 2023
    Date of Patent: November 26, 2024
    Assignee: Abbott Cardiovascular Systems, Inc.
    Inventors: John A. Simpson, Puneet Kamal Singh Gill, Pamela A. Kramer-Brown
  • Publication number: 20240181556
    Abstract: The present disclosure is directed to a multi-segment device comprising an elongate first portion comprising a first metallic material, an elongate second portion comprising a different metallic material, the first and second elongate portions being directly joined together end to end, a heat affected zone surrounding an interface of the elongate first portion and the elongate second portion, a shapeable distal end formed from at least a portion of the elongate second portion, a coil disposed about a portion of the elongate second portion.
    Type: Application
    Filed: February 7, 2024
    Publication date: June 6, 2024
    Inventors: John A. Simpson, Jeffrey F. Dooley, Matthew J. Gillick
  • Patent number: 11931817
    Abstract: The present disclosure is directed to a multi-segment device, such as an intravascular guide wire. The multi-segment device includes an elongate first portion comprising a first metallic material, an elongate second portion comprising a different metallic material, the first and second elongate portions being directly joined together end to end by a solid-state weld, and a heat affected zone surrounding an interface of the weld where the first and second portions are joined together, wherein the heat affected zone has an average thickness of less than about 0.20 mm.
    Type: Grant
    Filed: July 6, 2022
    Date of Patent: March 19, 2024
    Assignee: Abbott Cardiovascular Systems, Inc.
    Inventors: John A. Simpson, Jeffrey F. Dooley, Matthew J. Gillick
  • Publication number: 20230338173
    Abstract: A stent comprising a cobalt-based alloy comprising 18-50 weight % cobalt (Co), 10-25 weight % chromium (Cr), 10-15 weight % tungsten (W), 0-2 weight % of manganese (Mn), 0-3 weight % iron (Fe), and 10-65 weight % metal member selected from a platinum group metal.
    Type: Application
    Filed: July 3, 2023
    Publication date: October 26, 2023
    Inventors: John A. Simpson, Puneet Kamal Singh Gill, Pamela A. Kramer-Brown
  • Patent number: 11779477
    Abstract: A stent having a cobalt-based alloy, wherein the cobalt-based alloy is free of nickel (Ni), the cobalt-based alloy including 10-65 weight % metal member selected from a platinum group metal, a refractory metal, or combinations thereof, 15-25 weight % chromium (Cr), 4-7 weight % molybdenum (Mo), 0-18 weight % iron (Fe), and 22-40 weight % cobalt (Co).
    Type: Grant
    Filed: December 27, 2021
    Date of Patent: October 10, 2023
    Assignee: ABBOTT CARDIOVASCULAR SYSTEMS, INC.
    Inventors: John A. Simpson, Puneet Kamal Singh Gill, Pamela A. Kramer-Brown
  • Publication number: 20230095943
    Abstract: A method of pretinning a core wire for a guidewire having an elongate axis, comprising placing a ball of solder within a pocket in a soldering block; melting the ball of solder; holding a core wire over the ball of solder, with the elongate axis in a horizontal orientation; lowering a portion of the core wire into the ball of solder while maintaining the elongate axis in a horizontal orientation; removing the core wire from the ball of solder.
    Type: Application
    Filed: December 1, 2022
    Publication date: March 30, 2023
    Applicant: Abbott Cardiovascular System Inc.
    Inventors: John A. Simpson, Jeffrey F. Dooley, Matthew J. Gillick
  • Patent number: 11548086
    Abstract: A method of pretinning a guidewire core made of shape memory alloy and having an elongate axis, comprising: placing a ball of solder in a pocket in a soldering block; melting the ball of solder; holding a guidewire core over the ball of solder; lowering the guidewire core into the ball of solder; removing the guidewire from the ball of solder.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: January 10, 2023
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: John A. Simpson, Jeffrey F. Dooley, Matthew J. Gillick
  • Publication number: 20220331896
    Abstract: The present disclosure is directed to a multi-segment device, such as an intravascular guide wire. The multi-segment device includes an elongate first portion comprising a first metallic material, an elongate second portion comprising a different metallic material, the first and second elongate portions being directly joined together end to end by a solid-state weld, and a heat affected zone surrounding an interface of the weld where the first and second portions are joined together, wherein the heat affected zone has an average thickness of less than about 0.20 mm.
    Type: Application
    Filed: July 6, 2022
    Publication date: October 20, 2022
    Inventors: John A. Simpson, Jeffrey F. Dooley, Matthew J. Gillick
  • Patent number: 11440127
    Abstract: The present disclosure is directed to a multi-segment device, such as an intravascular guide wire. The multi-segment device includes an elongate first portion comprising a first metallic material, an elongate second portion comprising a different metallic material, the first and second elongate portions being directly joined together end to end by a solid-state weld, and a heat affected zone surrounding an interface of the weld where the first and second portions are joined together, wherein the heat affected zone has an average thickness of less than about 0.20 mm.
    Type: Grant
    Filed: June 10, 2020
    Date of Patent: September 13, 2022
    Assignee: ABBOTT CARDIOVASCULAR SYSTEMS, INC.
    Inventors: John A. Simpson, Jeffrey F. Dooley, Matthew J. Gillick
  • Publication number: 20220117762
    Abstract: A stent having a cobalt-based alloy, wherein the cobalt-based alloy is free of nickel (Ni), the cobalt-based alloy including 10-65 weight % metal member selected from a platinum group metal, a refractory metal, or combinations thereof, 15-25 weight % chromium (Cr), 4-7 weight % molybdenum (Mo), 0-18 weight % iron (Fe), and 22-40 weight % cobalt (Co).
    Type: Application
    Filed: December 27, 2021
    Publication date: April 21, 2022
    Inventors: John A. Simpson, Puneet Kamal Singh Gill, Pamela A. Kramer-Brown
  • Patent number: 11298251
    Abstract: Embodiments are directed to radiopaque implantable structures (e.g., stents) formed of cobalt-based alloys that comprise cobalt, chromium, tungsten, and nickel. Tungsten is present above its solubility limit (about 15%), but is still only present as a super-saturated, primarily single-phase material exhibiting an FCC microcrystalline structure.
    Type: Grant
    Filed: October 14, 2019
    Date of Patent: April 12, 2022
    Assignee: ABBOTT CARDIOVASCULAR SYSTEMS, INC.
    Inventors: John A. Simpson, Puneet Kamal Singh Gill, Pamela A. Kramer-Brown
  • Patent number: 11129970
    Abstract: The present disclosure is directed to multi-segment intraluminal guide wires including an elongate distal portion comprising a first metallic material (e.g., nitinol), an elongate proximal portion comprising a second metallic material (e.g., stainless steel). The distal and proximal portions may be directly joined together end to end by a solid-state weld joint. A diameter of the weld region surrounding the weld joint on either side of the weld joint may be reduced (e.g., ground down) relative to the diameter of the distal and proximal portions of the guide wire on either side of the weld region. A stiffness adjusting sleeve may be disposed over the weld joint so that a transition profile of bending stiffness across the weld region is gradual, rather than abrupt across the distal portion of the guide wire to the proximal portion of the guide wire. A polymer jacket may cover the sleeve and distal portion.
    Type: Grant
    Filed: July 23, 2018
    Date of Patent: September 28, 2021
    Assignee: ABBOTT CARDIOVASCULAR SYSTEMS, INC.
    Inventors: John A. Simpson, Bruce M. Wilson
  • Publication number: 20210106729
    Abstract: Embodiments are directed to radiopaque implantable structures (e.g., stents) formed of cobalt-based alloys that comprise cobalt, chromium, tungsten, and nickel, and methods for their manufacture. Tungsten is present above its solubility limit (about 15%) at ambient temperature, but is still only present as a super-saturated, primarily single-phase material exhibiting an FCC microcrystalline structure.
    Type: Application
    Filed: October 12, 2020
    Publication date: April 15, 2021
    Inventors: John A. Simpson, Puneet Kamal Singh Gill
  • Publication number: 20200298332
    Abstract: The present disclosure is directed to a multi-segment device, such as an intravascular guide wire. The multi-segment device includes an elongate first portion comprising a first metallic material, an elongate second portion comprising a different metallic material, the first and second elongate portions being directly joined together end to end by a solid-state weld, and a heat affected zone surrounding an interface of the weld where the first and second portions are joined together, wherein the heat affected zone has an average thickness of less than about 0.20 mm.
    Type: Application
    Filed: June 10, 2020
    Publication date: September 24, 2020
    Inventors: John A. Simpson, Jeffrey F. Dooley, Matthew J. Gillick
  • Patent number: 10717145
    Abstract: The present disclosure is directed to a multi-segment device, such as an intravascular guide wire. The multi-segment device includes an elongate first portion comprising a first metallic material, an elongate second portion comprising a different metallic material, the first and second elongate portions being directly joined together end to end by a solid-state weld, and a heat affected zone surrounding an interface of the weld where the first and second portions are joined together, wherein the heat affected zone has an average thickness of less than about 0.20 mm.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: July 21, 2020
    Assignee: Abbott Cardiovascular Systems, Inc.
    Inventors: John A. Simpson, Jeffrey F. Dooley, Matthew J. Gillick
  • Publication number: 20200122258
    Abstract: A method of pretinning a guidewire core made of shape memory alloy and having an elongate axis, comprising: placing a ball of solder in a pocket in a soldering block; melting the ball of solder; holding a guidewire core over the ball of solder; lowering the guidewire core into the ball of solder; removing the guidewire from the ball of solder.
    Type: Application
    Filed: December 20, 2019
    Publication date: April 23, 2020
    Applicant: Abbott Cardiovascular Systems Inc.
    Inventors: John A. Simpson, Jeffrey F. Dooley, Matthew J. Gillick
  • Patent number: 10556287
    Abstract: A method of pretinning a guidewire core made of shape memory alloy and having an elongate axis, comprising: placing a ball of solder in a pocket in a soldering block; melting the ball of solder; holding a guidewire core over the ball of solder; lowering the guidewire core into the ball of solder; removing the guidewire from the ball of solder.
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: February 11, 2020
    Assignee: ABBOTT CARDIOVASCULAR SYSTEMS INC.
    Inventors: John A. Simpson, Jeffrey F. Dooley, Matthew J. Gillick