Patents by Inventor Nga Doan

Nga Doan 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: 11849956
    Abstract: A device for delivering an implant (e.g., an embolic micro-coil) to a vascular disorder of a patient includes a delivery pusher, a moveable element, and first and second elongate members. The delivery pusher defines a lumen between its proximal and distal ends. The moveable element (e.g., a floating tube or a floating coil) defines a passageway therethrough and is disposed within the lumen of the delivery pusher. The first and second elongate members (e.g., core wires) are also disposed within the lumen of the delivery pusher. A portion of each elongate member passes through the passageway of the moveable element. Movement of the first elongate member in a first direction (e.g., retraction of the first elongate member from a locked to an unlocked configuration) causes a time-delayed or lost motion movement of the second elongate member in the same (i.e., first) direction, which releases the implant from the delivery pusher.
    Type: Grant
    Filed: July 16, 2021
    Date of Patent: December 26, 2023
    Assignee: Arissa Medical, Inc.
    Inventors: Amiel Richard Aguilar, Crystal K. Sein-Lwin, Nga Doan, Berchell John Yee
  • Patent number: 11819215
    Abstract: In various aspects, the invention relates to an embolic device for treating aneurysms or other vascular disorders that exhibits improved filling and/or neck blockage over conventional devices. As one example, the embolic device can include a structure that is wound into a spiral shape. In some cases, the spirally wound embolic device includes alternating narrow portions and link portions. As another example, the embolic device can be formed from a structure wound to form an infinity shape or, in some cases, multiple infinity shapes. In instances with multiple infinity shapes, the infinity shapes can be arranged either parallel or perpendicular to each other. In certain aspects, the embolic device can include two different embolic devices that are attached by an interconnect element, such that the two devices are attached but have independent freedom of motion when placed within a vascular disorder.
    Type: Grant
    Filed: April 4, 2019
    Date of Patent: November 21, 2023
    Assignee: INCUMEDx Inc.
    Inventors: Amiel R. Aguilar, Crystal K. Sein-Lwin, Nga Doan, Regina C. Velasco
  • Publication number: 20220000487
    Abstract: A device for delivering an implant (e.g., an embolic micro-coil) to a vascular disorder of a patient includes a delivery pusher, a moveable element, and first and second elongate members. The delivery pusher defines a lumen between its proximal and distal ends. The moveable element (e.g., a floating tube or a floating coil) defines a passageway therethrough and is disposed within the lumen of the delivery pusher. The first and second elongate members (e.g., core wires) are also disposed within the lumen of the delivery pusher. A portion of each elongate member passes through the passageway of the moveable element. Movement of the first elongate member in a first direction (e.g., retraction of the first elongate member from a locked to an unlocked configuration) causes a time-delayed or lost motion movement of the second elongate member in the same (i.e., first) direction, which releases the implant from the delivery pusher.
    Type: Application
    Filed: July 16, 2021
    Publication date: January 6, 2022
    Inventors: Amiel Richard Aguilar, Crystal K. Sein-Lwin, Nga Doan, Berchell John Yee
  • Patent number: 11090055
    Abstract: A device for delivering an implant (e.g., an embolic micro-coil) to a vascular disorder of a patient includes a delivery pusher, a moveable element, and first and second elongate members. The delivery pusher defines a lumen between its proximal and distal ends. The moveable element (e.g., a floating tube or a floating coil) defines a passageway therethrough and is disposed within the lumen of the delivery pusher. The first and second elongate members (e.g., core wires) are also disposed within the lumen of the delivery pusher. A portion of each elongate member passes through the passageway of the moveable element. Movement of the first elongate member in a first direction (e.g., retraction of the first elongate member from a locked to an unlocked configuration) causes a time-delayed or lost motion movement of the second elongate member in the same (i.e., first) direction, which releases the implant from the delivery pusher.
    Type: Grant
    Filed: April 6, 2018
    Date of Patent: August 17, 2021
    Assignee: INCUMEDx Inc.
    Inventors: Amiel Richard Aguilar, Crystal Kay Sein-Lwin, Nga Doan, Berchell John Yee
  • Patent number: 10966727
    Abstract: A device for delivering an implant (e.g., an embolic micro-coil) to a vascular disorder of a patient includes a delivery pusher, a moveable element, and first and second elongate members. The delivery pusher defines a lumen between its proximal and distal ends. The moveable element (e.g., a floating tube or a floating coil) defines a passageway therethrough and is disposed within the lumen of the delivery pusher. The first and second elongate members (e.g., core wires) are also disposed within the lumen of the delivery pusher. A portion of each elongate member passes through the passageway of the moveable element. Movement of the first elongate member in a first direction (e.g., retraction of the first elongate member from a locked to an unlocked configuration) causes a time-delayed or lost motion movement of the second elongate member in the same (i.e., first) direction, which releases the implant from the delivery pusher.
    Type: Grant
    Filed: July 18, 2018
    Date of Patent: April 6, 2021
    Assignee: INCUMEDx, Inc.
    Inventors: Amiel Richard Aguilar, Crystal Kay Sein-Lwin, Nga Doan, Berchell John Yee
  • Publication number: 20190307546
    Abstract: In various aspects, the invention relates to an embolic device for treating aneurysms or other vascular disorders that exhibits improved filling and/or neck blockage over conventional devices. As one example, the embolic device can include a structure that is wound into a spiral shape. In some cases, the spirally wound embolic device includes alternating narrow portions and link portions. As another example, the embolic device can be formed from a structure wound to form an infinity shape or, in some cases, multiple infinity shapes. In instances with multiple infinity shapes, the infinity shapes can be arranged either parallel or perpendicular to each other. In certain aspects, the embolic device can include two different embolic devices that are attached by an interconnect element, such that the two devices are attached but have independent freedom of motion when placed within a vascular disorder.
    Type: Application
    Filed: April 4, 2019
    Publication date: October 10, 2019
    Inventors: Amiel R. Aguilar, Crystal K. Sein-Lwin, Nga Doan, Regina C. Velasco
  • Publication number: 20180317924
    Abstract: A device for delivering an implant (e.g., an embolic micro-coil) to a vascular disorder of a patient includes a delivery pusher, a moveable element, and first and second elongate members. The delivery pusher defines a lumen between its proximal and distal ends. The moveable element (e.g., a floating tube or a floating coil) defines a passageway therethrough and is disposed within the lumen of the delivery pusher. The first and second elongate members (e.g., core wires) are also disposed within the lumen of the delivery pusher. A portion of each elongate member passes through the passageway of the moveable element. Movement of the first elongate member in a first direction (e.g., retraction of the first elongate member from a locked to an unlocked configuration) causes a time-delayed or lost motion movement of the second elongate member in the same (i.e., first) direction, which releases the implant from the delivery pusher.
    Type: Application
    Filed: July 18, 2018
    Publication date: November 8, 2018
    Inventors: Amiel Richard Aguilar, Crystal Kay Sein-Lwin, Nga Doan, Berchell John Yee
  • Patent number: 10052108
    Abstract: A device for delivering an implant (e.g., an embolic micro-coil) to a vascular disorder of a patient includes a delivery pusher, a moveable element, and first and second elongate members. The delivery pusher defines a lumen between its proximal and distal ends. The moveable element (e.g., a floating tube or a floating coil) defines a passageway therethrough and is disposed within the lumen of the delivery pusher. The first and second elongate members (e.g., core wires) are also disposed within the lumen of the delivery pusher. A portion of each elongate member passes through the passageway of the moveable element. Movement of the first elongate member in a first direction (e.g., retraction of the first elongate member from a locked to an unlocked configuration) causes a time-delayed or lost motion movement of the second elongate member in the same (i.e., first) direction, which releases the implant from the delivery pusher.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: August 21, 2018
    Assignee: INCUMEDx, Inc.
    Inventors: Amiel Richard Aguilar, Crystal Kay Sein-Lwin, Nga Doan, Berchell John Yee
  • Publication number: 20180228493
    Abstract: A device for delivering an implant (e.g., an embolic micro-coil) to a vascular disorder of a patient includes a delivery pusher, a moveable element, and first and second elongate members. The delivery pusher defines a lumen between its proximal and distal ends. The moveable element (e.g., a floating tube or a floating coil) defines a passageway therethrough and is disposed within the lumen of the delivery pusher. The first and second elongate members (e.g., core wires) are also disposed within the lumen of the delivery pusher. A portion of each elongate member passes through the passageway of the moveable element. Movement of the first elongate member in a first direction (e.g., retraction of the first elongate member from a locked to an unlocked configuration) causes a time-delayed or lost motion movement of the second elongate member in the same (i.e., first) direction, which releases the implant from the delivery pusher.
    Type: Application
    Filed: April 6, 2018
    Publication date: August 16, 2018
    Inventors: Amiel Richard Aguilar, Crystal Kay Sein-Lwin, Nga Doan, Berchell John Yee
  • Publication number: 20170119399
    Abstract: A device for delivering an implant (e.g., an embolic micro-coil) to a vascular disorder of a patient includes a delivery pusher, a moveable element, and first and second elongate members. The delivery pusher defines a lumen between its proximal and distal ends. The moveable element (e.g., a floating tube or a floating coil) defines a passageway therethrough and is disposed within the lumen of the delivery pusher. The first and second elongate members (e.g., core wires) are also disposed within the lumen of the delivery pusher. A portion of each elongate member passes through the passageway of the moveable element. Movement of the first elongate member in a first direction (e.g., retraction of the first elongate member from a locked to an unlocked configuration) causes a time-delayed or lost motion movement of the second elongate member in the same (i.e., first) direction, which releases the implant from the delivery pusher.
    Type: Application
    Filed: October 30, 2015
    Publication date: May 4, 2017
    Inventors: Amiel Richard Aguilar, Crystal Kay Sein-Lwin, Nga Doan, Berchell John Yee
  • Publication number: 20120123449
    Abstract: A novel bridge clip tissue connector includes two clips separated by a bridge portion. The clips allow for the connecting of tissue at two positions that are maintained by the bridge portion. The connector can be used for performing a wide variety of surgical procedures, including anastomosis and a horizontal mattress suture-like connection.
    Type: Application
    Filed: January 24, 2012
    Publication date: May 17, 2012
    Applicant: MEDTRONIC, INC
    Inventors: Laurent Schaller, John D. Nguyen, Liem Ho, Nga Doan, Cong Thach
  • Patent number: 8118822
    Abstract: A novel bridge clip tissue connector includes two clips separated by a bridge portion. The clips allow for the connecting of tissue at two positions that are maintained by the bridge portion. The connector can be used for performing a wide variety of surgical procedures, including anastomosis and a horizontal mattress suture-like connection.
    Type: Grant
    Filed: April 5, 2001
    Date of Patent: February 21, 2012
    Assignee: Medtronic, Inc.
    Inventors: Laurent Schaller, John D. Nguyen, Liem Ho, Nga Doan, Cong Thach
  • Patent number: 7963973
    Abstract: A tissue connector assembly comprising a multiple loop fastener movable between an open configuration and a closed configuration and a restraining device attached to the fastener for restraining the fastener in its open configuration provides for a self-closing, multiple suture fastener. A needle may be releasably attached to the fastener. A method for connecting tissues is also disclosed. The method includes inserting a fastener through tissue with the fastener being biased in an open position by a restraining device secured to the fastener, threading the fastener through more than one stitch, and removing the restraining device from the fastener.
    Type: Grant
    Filed: September 2, 2005
    Date of Patent: June 21, 2011
    Assignee: Medtronic, Inc.
    Inventors: John D. Nguyen, Liem Ho, Cong Thach, Laurent Schaller, Nga Doan
  • Patent number: 7847703
    Abstract: An electrical connector apparatus for use with a field device includes a housing having a first end and a second end, an electrical feedthrough subassembly, and a visual indicator viewable from outside the housing. The first end of the housing is configured to mechanically connect to the field device. The electrical feedthrough subassembly extends through at least a portion of the housing and includes a plurality of electrical conductors configured to provide a removable electrical connection at the second end of the housing and a flameproof barrier disposed between the first and second ends of the housing. The visual indicator has a plurality of illumination modes indicative of a power state of the electrical feedthrough subassembly.
    Type: Grant
    Filed: November 18, 2008
    Date of Patent: December 7, 2010
    Assignee: Rosemount Inc.
    Inventors: Dirk Bauschke, Todd Larson, Douglas Wayne Arntson, Nga Doan
  • Publication number: 20100123591
    Abstract: An electrical connector apparatus for use with a field device includes a housing having a first end and a second end, an electrical feedthrough subassembly, and a visual indicator viewable from outside the housing. The first end of the housing is configured to mechanically connect to the field device. The electrical feedthrough subassembly extends through at least a portion of the housing and includes a plurality of electrical conductors configured to provide a removable electrical connection at the second end of the housing and a flameproof barrier disposed between the first and second ends of the housing. The visual indicator has a plurality of illumination modes indicative of a power state of the electrical feedthrough subassembly.
    Type: Application
    Filed: November 18, 2008
    Publication date: May 20, 2010
    Applicant: Rosemount Inc.
    Inventors: Dirk Bauschke, Todd Larson, Douglas Wayne Arntson, Nga Doan
  • Publication number: 20060004389
    Abstract: A tissue connector assembly comprising a multiple loop fastener movable between an open configuration and a closed configuration and a restraining device attached to the fastener for restraining the fastener in its open configuration provides for a self-closing, multiple suture fastener. A needle may be releasably attached to the fastener. A method for connecting tissues is also disclosed. The method includes inserting a fastener through tissue with the fastener being biased in an open position by a restraining device secured to the fastener, threading the fastener through more than one stitch, and removing the restraining device from the fastener.
    Type: Application
    Filed: September 2, 2005
    Publication date: January 5, 2006
    Inventors: John Nguyen, Liem Ho, Cong Thach, Laurent Schaller, Nga Doan
  • Patent number: 6945980
    Abstract: A tissue connector assembly comprising a multiple loop fastener movable between an open configuration and a closed configuration and a restraining device attached to the fastener for restraining the fastener in its open configuration provides for a self-closing, multiple suture fastener. A needle may be releasably attached to the fastener. A method for connecting tissues is also disclosed. The method includes inserting a fastener through tissue with the fastener being biased in an open position by a restraining device secured to the fastener, threading the fastener through more than one stitch, and removing the restraining device from the fastener.
    Type: Grant
    Filed: April 5, 2001
    Date of Patent: September 20, 2005
    Assignee: Medtronic, Inc.
    Inventors: John D. Nguyen, Liem Ho, Cong Thach, Laurent Schaller, Nga Doan
  • Publication number: 20050065601
    Abstract: An annuloplasty system for repairing a valve in a patient's heart comprises a surgical implant including a member having first and second end portions. The implant member further is configured and/or adapted to form a partial ring along a portion of one of the valve annulae of a patient's heart such as the mitral or tricuspid valve annulus. The implant member is axially elastic such that it can axially expand and contract and includes first and second anchors extending from the end portions of the implant member. The anchors are adapted to anchor the implant in tissue such as the mitral or tricuspid valve annulus. The system can facilitate tissue plication (e.g., of the posterior annulus of the mitral valve or the annulus of the tricuspid valve) and reinforcement of a valve annulus.
    Type: Application
    Filed: November 10, 2004
    Publication date: March 24, 2005
    Inventors: Andrew Lee, Norman Fung, John Nguyen, Nga Doan, Laurent Schaller
  • Publication number: 20010018592
    Abstract: A novel bridge clip tissue connector includes two clips separated by a bridge portion. The clips allow for the connecting of tissue at two positions that are maintained by the bridge portion. The connector can be used for performing a wide variety of surgical procedures, including anastomosis and a horizontal mattress suture-like connection.
    Type: Application
    Filed: April 5, 2001
    Publication date: August 30, 2001
    Inventors: Laurent Schaller, John D. Nguyen, Liem Ho, Nga Doan, Cong Thach
  • Publication number: 20010018593
    Abstract: A tissue connector assembly comprising a multiple loop fastener movable between an open configuration and a closed configuration and a restraining device attached to the fastener for restraining the fastener in its open configuration provides for a self-closing, multiple suture fastener. A needle may be releasably attached to the fastener. A method for connecting tissues is also disclosed. The method includes inserting a fastener through tissue with the fastener being biased in an open position by a restraining device secured to the fastener, threading the fastener through more than one stitch, and removing the restraining device from the fastener.
    Type: Application
    Filed: April 5, 2001
    Publication date: August 30, 2001
    Inventors: John D. Nguyen, Liem Ho, Cong Thach, Laurent Schaller, Nga Doan