Patents by Inventor Hoa D. Nguyen

Hoa D. Nguyen 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: 20250228579
    Abstract: The invention provides a device for generating shock waves. The device may comprise an elongated tube and a conductive sheath circumferentially mounted around the elongated tube. The device may further comprise first and second insulated wires extending along the outer surface of the elongated tube. A portion of the first insulated wire is removed to form a first inner electrode, which is adjacent to a first side edge of the conductive sheath. A portion of the second insulated wire is removed to form a second inner electrode, which is adjacent to a second side edge of the conductive sheath. Responsive to a high voltage being applied across the first inner electrode and the second inner electrode, a first shock wave is created across the first side edge and the first inner electrode, and a second shock wave is created across the second side edge and the second inner electrode.
    Type: Application
    Filed: January 16, 2025
    Publication date: July 17, 2025
    Applicant: Shockwave Medical, Inc.
    Inventors: Hoa D. NGUYEN, KHANH VO
  • Publication number: 20250169835
    Abstract: The present disclosure provides a catheter for treating lesions in a body lumen, such as calcified lesions and occlusions in vasculature. When a voltage is applied across the conductive elements, current flows across an arcing region, from one electrode element to another, to produce shock waves and cavitation bubbles. As a treatment continues, the conductive elements slowly erode at the arcing region where current flows between the electrodes. To increase the lifespan of the electrode assembly, the distal edges of the conductive elements may be shaped to promote erosion of the sheaths in a predetermined or semi-controlled pattern.
    Type: Application
    Filed: November 29, 2023
    Publication date: May 29, 2025
    Applicant: Shockwave Medical, Inc.
    Inventors: Anna-Elodie KERLO, Hester CHAN, Hoa D. NGUYEN, Chi LONG, Huy phan, Leela Goel, Tommy NGUYEN
  • Publication number: 20250160864
    Abstract: Catheter devices for treating occlusions in body lumen are described herein. The catheter devices may include a tubular body having a distal end, an distal portion elastically connected to the distal end of the tubular body, an impactor connected to the distal portion and separated by a space from the distal end of the tubular body, a distal shock wave emitter located adjacent to the space and connected to a power source, and an enclosure at least partially surrounding each of the distal end of the tubular body, the elastic distal portion, the impactor, and the distal shock wave emitter. The impactor may be configured to move in response to shock waves generated from the distal shock wave emitter, such that a length of the space in the proximal-distal direction increases by between 0.05 mm and 0.6 mm.
    Type: Application
    Filed: November 17, 2023
    Publication date: May 22, 2025
    Applicant: Shockwave Medical, Inc.
    Inventors: Hoa D. Nguyen, Patrick Stephens
  • Patent number: 12245782
    Abstract: Disclosed herein shock wave catheters comprising one or more shock wave electrodes for cracking calcifications located within blood vessels. In some variations, a shock wave catheter has first and second shock wave electrodes each circumferentially disposed over the outer surface of the catheter. In certain variations, the first electrode has a recess and the second electrode has a protrusion that is received by the recess and a spark gap is located along the separation between the recess and the protrusion. The second electrode can also have a recess that receives a protrusion from a third shock wave electrode, where the separation between the second and third electrodes along the separation between the recess and the protrusion forms a second spark gap. A shock wave can be initiated across these spark gaps when a voltage is applied over the electrodes.
    Type: Grant
    Filed: June 26, 2024
    Date of Patent: March 11, 2025
    Assignee: SHOCKWAVE MEDICAL, INC.
    Inventors: Hoa D. Nguyen, John M. Adams
  • Patent number: 12232754
    Abstract: Described herein is a shock wave device for the treatment of vascular occlusions. The shock wave device includes an outer covering and an inner member inner connected at a distal end of the device. First and second conductive wires extend along the length of the device within the volume between the outer covering and the inner member. A conductive emitter band circumscribes the ends of the first and second wires to form a first spark gap between the end of the first wire and the emitter band and a second spark gap between the end of the second wire and the emitter band. When the volume is filled with conductive fluid and a high voltage pulse is applied across the first and second wires, first and second shock waves can be initiated from the first and second spark gaps.
    Type: Grant
    Filed: February 20, 2024
    Date of Patent: February 25, 2025
    Assignee: SHOCKWAVE MEDICAL, INC.
    Inventor: Hoa D. Nguyen
  • Patent number: 12232752
    Abstract: The invention provides a device for generating shock waves. The device may comprise an elongated tube and a conductive sheath circumferentially mounted around the elongated tube. The device may further comprise first and second insulated wires extending along the outer surface of the elongated tube. A portion of the first insulated wire is removed to form a first inner electrode, which is adjacent to a first side edge of the conductive sheath. A portion of the second insulated wire is removed to form a second inner electrode, which is adjacent to a second side edge of the conductive sheath. Responsive to a high voltage being applied across the first inner electrode and the second inner electrode, a first shock wave is created across the first side edge and the first inner electrode, and a second shock wave is created across the second side edge and the second inner electrode.
    Type: Grant
    Filed: February 27, 2023
    Date of Patent: February 25, 2025
    Assignee: SHOCKWAVE MEDICAL, INC.
    Inventors: Hoa D. Nguyen, Khanh Vo
  • Publication number: 20250000531
    Abstract: The invention provides a system for treating an occlusion within a body lumen. The system may comprise an insulated outer sheath; an elongated conductive tube, wherein the insulated outer sheath is circumferentially mounted around the elongated conductive tube; and an insulated wire having a helically coiled portion at a distal end of the insulated wire. The coiled portion includes an exposed distal tip, and a distal portion of the elongated conductive tube is circumferentially mounted around the distal coiled portion of the insulated wire. When a voltage is applied across the insulated wire and the elongated conductive tube, a current is configured to flow from the exposed distal tip of the insulated wire to the elongated conductive tube to generate a plurality of cavitation bubbles. In an alternate embodiment, an elongated central electrode is used in place of the conductive tube.
    Type: Application
    Filed: September 12, 2024
    Publication date: January 2, 2025
    Applicant: Shockwave Medical, Inc.
    Inventors: Hoa D. NGUYEN, Camilo Perez SAAIBI
  • Publication number: 20250000530
    Abstract: Described herein are shock wave devices and methods for the treatment of calcified heart valves. One variation of a shock wave device may comprise an elongated flexible tube carried by a sheath. The tube may have a fluid input end, which may be located near a proximal end of the sheath. The tube may include a loop portion. The loop portion may be configured to be at least partially accommodated within a cusp of the heart valve. The tube may be fillable with a conductive fluid. In some variations, the shock wave device may include an array of electrode pairs associated with a plurality of wires positioned within the loop portion of a tube. The electrode pairs may be electrically connectable to a voltage source and configured to generate shock waves in the conductive fluid in response to voltage pulses.
    Type: Application
    Filed: August 15, 2024
    Publication date: January 2, 2025
    Applicant: Shockwave Medical, Inc.
    Inventors: Rainier BETELIA, Hoa D. NGUYEN, Camilo Perez SAAIBI, Adam R. TANNER
  • Patent number: 12144516
    Abstract: Described herein are shock wave devices and methods for the treatment of calcified heart valves. One variation of a shock wave device may comprise an elongated flexible tube carried by a sheath. The tube may have a fluid input end, which may be located near a proximal end of the sheath. The tube may include a loop portion. The loop portion may be configured to be at least partially accommodated within a cusp of the heart valve. The tube may be fillable with a conductive fluid. In some variations, the shock wave device may include an array of electrode pairs associated with a plurality of wires positioned within the loop portion of a tube. The electrode pairs may be electrically connectable to a voltage source and configured to generate shock waves in the conductive fluid in response to voltage pulses.
    Type: Grant
    Filed: November 7, 2022
    Date of Patent: November 19, 2024
    Assignee: SHOCKWAVE MEDICAL, INC.
    Inventors: Rainier Betelia, Hoa D. Nguyen, Camilo Perez Saaibi, Adam R. Tanner
  • Publication number: 20240341787
    Abstract: Disclosed herein shock wave catheters comprising one or more shock wave electrodes for cracking calcifications located within blood vessels. In some variations, a shock wave catheter has first and second shock wave electrodes each circumferentially disposed over the outer surface of the catheter. In certain variations, the first electrode has a recess and the second electrode has a protrusion that is received by the recess and a spark gap is located along the separation between the recess and the protrusion. The second electrode can also have a recess that receives a protrusion from a third shock wave electrode, where the separation between the second and third electrodes along the separation between the recess and the protrusion forms a second spark gap. A shock wave can be initiated across these spark gaps when a voltage is applied over the electrodes.
    Type: Application
    Filed: June 26, 2024
    Publication date: October 17, 2024
    Applicant: Shockwave Medical, Inc.
    Inventors: Hoa D. NGUYEN, John M. ADAMS
  • Patent number: 12114874
    Abstract: The invention provides a system for treating an occlusion within a body lumen. The system may comprise an insulated outer sheath; an elongated conductive tube, wherein the insulated outer sheath is circumferentially mounted around the elongated conductive tube; and an insulated wire having a helically coiled portion at a distal end of the insulated wire. The coiled portion includes an exposed distal tip, and a distal portion of the elongated conductive tube is circumferentially mounted around the distal coiled portion of the insulated wire. When a voltage is applied across the insulated wire and the elongated conductive tube, a current is configured to flow from the exposed distal tip of the insulated wire to the elongated conductive tube to generate a plurality of cavitation bubbles. In an alternate embodiment, an elongated central electrode is used in place of the conductive tube.
    Type: Grant
    Filed: January 31, 2023
    Date of Patent: October 15, 2024
    Assignee: Shockwave Medical, Inc.
    Inventors: Hoa D. Nguyen, Camilo Perez Saaibi
  • Patent number: 12064129
    Abstract: Disclosed herein shock wave catheters comprising one or more shock wave electrodes for cracking calcifications located within blood vessels. In some variations, a shock wave catheter has first and second shock wave electrodes each circumferentially disposed over the outer surface of the catheter. In certain variations, the first electrode has a recess and the second electrode has a protrusion that is received by the recess and a spark gap is located along the separation between the recess and the protrusion. The second electrode can also have a recess that receives a protrusion from a third shock wave electrode, where the separation between the second and third electrodes along the separation between the recess and the protrusion forms a second spark gap. A shock wave can be initiated across these spark gaps when a voltage is applied over the electrodes.
    Type: Grant
    Filed: April 20, 2022
    Date of Patent: August 20, 2024
    Assignee: SHOCKWAVE MEDICAL, INC.
    Inventors: Hoa D. Nguyen, John M. Adams
  • Publication number: 20240188975
    Abstract: Described herein is a shock wave device for the treatment of vascular occlusions. The shock wave device includes an outer covering and an inner member inner connected at a distal end of the device. First and second conductive wires extend along the length of the device within the volume between the outer covering and the inner member. A conductive emitter band circumscribes the ends of the first and second wires to form a first spark gap between the end of the first wire and the emitter band and a second spark gap between the end of the second wire and the emitter band. When the volume is filled with conductive fluid and a high voltage pulse is applied across the first and second wires, first and second shock waves can be initiated from the first and second spark gaps.
    Type: Application
    Filed: February 20, 2024
    Publication date: June 13, 2024
    Applicant: Shockwave Medical, Inc.
    Inventor: Hoa D. NGUYEN
  • Patent number: 11950793
    Abstract: Described herein is a shock wave device for the treatment of vascular occlusions. The shock wave device includes an outer covering and an inner member inner connected at a distal end of the device. First and second conductive wires extend along the length of the device within the volume between the outer covering and the inner member. A conductive emitter band circumscribes the ends of the first and second wires to form a first spark gap between the end of the first wire and the emitter band and a second spark gap between the end of the second wire and the emitter band. When the volume is filled with conductive fluid and a high voltage pulse is applied across the first and second wires, first and second shock waves can be initiated from the first and second spark gaps.
    Type: Grant
    Filed: February 7, 2023
    Date of Patent: April 9, 2024
    Assignee: SHOCKWAVE MEDICAL, INC.
    Inventor: Hoa D. Nguyen
  • Publication number: 20230293197
    Abstract: The invention provides a device for generating shock waves. The device may comprise an elongated tube and a conductive sheath circumferentially mounted around the elongated tube. The device may further comprise first and second insulated wires extending along the outer surface of the elongated tube. A portion of the first insulated wire is removed to form a first inner electrode, which is adjacent to a first side edge of the conductive sheath. A portion of the second insulated wire is removed to form a second inner electrode, which is adjacent to a second side edge of the conductive sheath. Responsive to a high voltage being applied across the first inner electrode and the second inner electrode, a first shock wave is created across the first side edge and the first inner electrode, and a second shock wave is created across the second side edge and the second inner electrode.
    Type: Application
    Filed: February 27, 2023
    Publication date: September 21, 2023
    Applicant: Shockwave Medical, Inc.
    Inventors: Hoa D. NGUYEN, KHANH VO
  • Publication number: 20230218892
    Abstract: Intraoral appliances are disclosed that provide electrical stimulation to tissue in a patient's oral cavity in a manner that reduces apnea events during sleep. A representative appliance can induce a current or currents through tissue and/or anatomical structures in a manner that maintains upper airway tone and/or patency.
    Type: Application
    Filed: December 22, 2022
    Publication date: July 13, 2023
    Inventors: Walter Joseph Stevens, David Herron, Chang Yeul Lee, Ling-Kang Tong, Paul Thomas Hichwa, Hoa D. Nguyen, Nishant Srivastava, Eymard Julio Burlaza
  • Publication number: 20230190316
    Abstract: Described herein is a shock wave device for the treatment of vascular occlusions. The shock wave device includes an outer covering and an inner member inner connected at a distal end of the device. First and second conductive wires extend along the length of the device within the volume between the outer covering and the inner member. A conductive emitter band circumscribes the ends of the first and second wires to form a first spark gap between the end of the first wire and the emitter band and a second spark gap between the end of the second wire and the emitter band. When the volume is filled with conductive fluid and a high voltage pulse is applied across the first and second wires, first and second shock waves can be initiated from the first and second spark gaps.
    Type: Application
    Filed: February 7, 2023
    Publication date: June 22, 2023
    Applicant: Shockwave Medical, Inc.
    Inventor: Hoa D. NGUYEN
  • Publication number: 20230181203
    Abstract: The invention provides a system for treating an occlusion within a body lumen. The system may comprise an insulated outer sheath; an elongated conductive tube, wherein the insulated outer sheath is circumferentially mounted around the elongated conductive tube; and an insulated wire having a helically coiled portion at a distal end of the insulated wire. The coiled portion includes an exposed distal tip, and a distal portion of the elongated conductive tube is circumferentially mounted around the distal coiled portion of the insulated wire. When a voltage is applied across the insulated wire and the elongated conductive tube, a current is configured to flow from the exposed distal tip of the insulated wire to the elongated conductive tube to generate a plurality of cavitation bubbles. In an alternate embodiment, an elongated central electrode is used in place of the conductive tube.
    Type: Application
    Filed: January 31, 2023
    Publication date: June 15, 2023
    Applicant: Shockwave Medical, Inc.
    Inventors: Hoa D. NGUYEN, Camilo Perez SAAIBI
  • Publication number: 20230165598
    Abstract: The present disclosure provides a catheter for treating lesions in a body lumen, such as calcified lesions and occlusions in vasculature. The catheter can include a dual-layer electrode assembly having a first conductive sheath and a second conductive sheath arranged circumferentially therearound. In some implementations, a first conductive sheath can be a flat coil. When a voltage is applied across the conductive sheaths, current flows across an arcing region, for example, from the distal side edge of the first sheath to the distal side edge of the second sheath to produce shock waves and/or cavitation bubbles. As a treatment continues, the sheaths slowly erode at the arcing region where current flows between the sheaths. To increase the lifespan of the electrode assembly, the distal side edges of the sheaths may be shaped to promote erosion of the sheaths in a predetermined or semi-controlled pattern.
    Type: Application
    Filed: November 29, 2022
    Publication date: June 1, 2023
    Inventors: Hoa D. NGUYEN, Anna-Elodie KERLO, Chi LONG, Hester CHAN, Huy PHAN, Leela GOEL, Tommy NGUYEN
  • Patent number: 11622780
    Abstract: The invention provides a device for generating shock waves. The device may comprise an elongated tube and a conductive sheath circumferentially mounted around the elongated tube. The device may further comprise first and second insulated wires extending along the outer surface of the elongated tube. A portion of the first insulated wire is removed to form a first inner electrode, which is adjacent to a first side edge of the conductive sheath. A portion of the second insulated wire is removed to form a second inner electrode, which is adjacent to a second side edge of the conductive sheath. Responsive to a high voltage being applied across the first inner electrode and the second inner electrode, a first shock wave is created across the first side edge and the first inner electrode, and a second shock wave is created across the second side edge and the second inner electrode.
    Type: Grant
    Filed: June 4, 2020
    Date of Patent: April 11, 2023
    Assignee: SHOCKWAVE MEDICAL, INC.
    Inventors: Hoa D. Nguyen, Khanh Vo