Patents by Inventor Don Q. Ngo-Chu

Don Q. Ngo-Chu 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: 20230038560
    Abstract: A catheter that includes a mechanism for deflecting a distal portion of a catheter may include a deflection knob including a first thread, a rod including a second thread that is coupled to the first thread, and a puller wire that is connected to the rod. The rod may additionally include a pocket to which the puller wire may be connected via a joining feature that may be secured in the pocket and attached to a proximal end of the puller wire. The joining feature may include a first ferrule joined, e.g., crimped, to the proximal end of the puller wire and a second ferrule secured, e.g., bonded, in the pocket and joined, e.g., crimped, to the first ferrule.
    Type: Application
    Filed: October 17, 2022
    Publication date: February 9, 2023
    Inventors: Don Q. NGO-CHU, Susan AYER, Christopher T. BEECKLER, Kevin J. HERRERA, Joseph T. KEYES
  • Publication number: 20220339407
    Abstract: An apparatus includes a bod, an actuation assembly, and a guide catheter extending distally from the body. The guide catheter includes an open proximal end, an open distal end, a rigid proximal portion, a bendable distal portion, and a pull wire extending from the bendable distal portion to the rigid proximal portion. A proximal end of the pull wire is coupled with the actuation assembly. The actuation assembly is operable to translate the pull wire relative to the rigid proximal portion to thereby articulate the bendable distal portion.
    Type: Application
    Filed: May 19, 2022
    Publication date: October 27, 2022
    Inventors: George L. Matlock, Don Q. Ngo-Chu, Tuan Pham, John H. Thinnes, JR.
  • Patent number: 11471650
    Abstract: A catheter that includes a mechanism for deflecting a distal portion of a catheter may include a deflection knob including a first thread, a rod including a second thread that is coupled to the first thread, and a puller wire that is connected to the rod. The rod may additionally include a pocket to which the puller wire may be connected via a joining feature that may be secured in the pocket and attached to a proximal end of the puller wire. The joining feature may include a first ferrule joined, e.g., crimped, to the proximal end of the puller wire and a second ferrule secured, e.g., bonded, in the pocket and joined, e.g., crimped, to the first ferrule.
    Type: Grant
    Filed: September 3, 2020
    Date of Patent: October 18, 2022
    Assignee: BIOSENSE WEBSTER (ISRAEL) LTD.
    Inventors: Don Q. Ngo-Chu, Susan Ayer, Christopher T. Beeckler, Kevin J. Herrera, Joseph T. Keyes
  • Patent number: 11376401
    Abstract: An apparatus includes a bod, an actuation assembly, and a guide catheter extending distally from the body. The guide catheter includes an open proximal end, an open distal end, a rigid proximal portion, a bendable distal portion, and a pull wire extending from the bendable distal portion to the rigid proximal portion. A proximal end of the pull wire is coupled with the actuation assembly. The actuation assembly is operable to translate the pull wire relative to the rigid proximal portion to thereby articulate the bendable distal portion.
    Type: Grant
    Filed: April 17, 2018
    Date of Patent: July 5, 2022
    Assignee: Acclarent, Inc.
    Inventors: George L. Matlock, Don Q. Ngo-Chu, Tuan Pham, John H. Thinnes, Jr.
  • Patent number: 11027105
    Abstract: An apparatus includes an instrument body, a shaft assembly, a dilation catheter, a guidewire, and a proximal deflection actuation assembly. The dilation catheter includes an expandable dilator and is slidable relative to the shaft assembly to thereby position the dilator distally relative to the distal end of the shaft assembly. The proximal deflection actuation assembly is positioned at the proximal end of the shaft assembly and is operable to selectively deflect the length of the shaft assembly relative to the longitudinal axis of the instrument body to thereby deflect the longitudinal axis of the shaft assembly away from the longitudinal axis of the instrument body.
    Type: Grant
    Filed: July 11, 2018
    Date of Patent: June 8, 2021
    Assignees: Biosense Webster (Israel) Ltd., Acclarent, Inc.
    Inventors: George L. Matlock, Yehuda Algawi, Ilya Sitnitsky, Andres C. Altmann, Ygal Zucker, Don Q. Ngo-Chu, Vadim Gliner, Christopher T. Beeckler, John H. Thinnes, Jr., Assaf Govari
  • Publication number: 20210154450
    Abstract: An apparatus includes a body, a shaft assembly, a deflection actuation assembly, and a dilation catheter. The shaft assembly includes a rigid proximal portion and a flexible distal portion. The deflection actuation assembly includes a rotary actuator and a first translatable actuation member at least partially disposed within the first rotary actuator. A second translatable actuation member extends through the shaft assembly and couples the first translatable actuation member with the flexible distal portion of the shaft assembly. The first rotary actuator is rotatable about a longitudinal axis to thereby drive the first and second translatable actuation members longitudinally. The flexible distal portion is configured to deflect away from the longitudinal axis in response to translation of the first and second translatable actuation members longitudinally. The dilation catheter is slidable relative to the shaft assembly and includes an expandable dilator.
    Type: Application
    Filed: November 30, 2020
    Publication date: May 27, 2021
    Inventors: George L. Matlock, Yehuda Algawi, Ilya Sitnitsky, Andres C. Altmann, Ygal Zucker, Don Q. Ngo-Chu, Vadim Gliner, Christopher T. Beeckler, John H. Thinnes, JR., Assaf Govari
  • Patent number: 10967159
    Abstract: A catheter system and method of dilating first and second anatomies includes a guide catheter extending along a longitudinal axis that has a breakaway distal end portion with a conduit in communication with the lumen. The conduit is configured to guide a dilation catheter at a first predetermined angle relative to the longitudinal axis and a second predetermined angle relative to the longitudinal axis for respectively dilating the first and second anatomies. The breakaway distal end portion includes first and second guide segments at least partially defining the conduit and respectively extending the first and predetermined angles to first and second distal openings. The second guide segment is removably connected to the first guide segment for selectively guiding the dilation catheter along the second predetermined angle when connected and along the first predetermined angle when disconnected.
    Type: Grant
    Filed: June 15, 2018
    Date of Patent: April 6, 2021
    Assignee: Acclarent, Inc.
    Inventors: George L. Matlock, Don Q. Ngo-Chu, Jetmir Palushi, Tuan Pham, Henry F. Salazar, David A. Smith, Jr., John H. Thinnes, Jr.
  • Publication number: 20210085929
    Abstract: A dilation apparatus includes a handle assembly, a dilator, a guidewire, and a steering assembly. The dilator is connected to the handle assembly and is configured to transition between an unexpanded state and an expanded state. The guidewire is longitudinally fixed relative to the dilator. The steering assembly is configured to laterally deflect at least a portion of the guidewire relative to the handle assembly. The steering assembly includes an actuator coupled with the handle assembly and a pull wire extending between the actuator and guidewire. A portion of the pull wire is attached to the guidewire. The actuator is configured to move the pull wire relative to the handle assembly in order to laterally deflect the at least a portion of the guidewire.
    Type: Application
    Filed: October 8, 2020
    Publication date: March 25, 2021
    Inventors: Don Q. Ngo-Chu, Jetmir Palushi, Itzhak Fang, Henry F. Salazar, David A. Smith, JR.
  • Publication number: 20210085925
    Abstract: A catheter that includes a mechanism for deflecting a distal portion of a catheter is disclosed. The catheter may comprise a deflection knob including a first thread, a rod including a second thread that is coupled to the first thread, and a puller wire that is connected to the rod. The rod may additionally include a pocket to which the puller wire may be connected via a joining feature that may be secured in the pocket and attached to a proximal end of the puller wire. The joining feature may comprise a first ferrule joined, e.g., crimped, to the proximal end of the puller wire and a second ferrule secured, e.g., bonded, in the pocket and joined, e.g., crimped, to the first ferrule.
    Type: Application
    Filed: September 3, 2020
    Publication date: March 25, 2021
    Inventors: Don Q. NGO-CHU, Susan AYER, Christopher T. BEECKLER, Kevin J. HERRERA, Joseph T. KEYES
  • Publication number: 20210077185
    Abstract: An irrigated electrophysiology balloon catheter with flexible-circuit electrodes is disclosed. To help prevent fluids, e.g., irrigation fluid or air, from passing between a space between an inner tubular shaft and an outer tubular shaft of the catheter, a first seal and a second seal may be provided about locations where the inner tubular shaft emerges from the outer tubular shaft. The materials and dimensions of these seals are instrumental in ensuring that the seals are sufficiently robust such that they do not fail during use of the catheter. Additionally, the flexible-circuit electrodes may include substrates adhered to the balloon. Delamination of these substrates may be prevented by use of a reinforcement component that extends the length of the balloon.
    Type: Application
    Filed: August 21, 2020
    Publication date: March 18, 2021
    Inventors: Don Q. NGO-CHU, Christopher T. BEECKLER, Cuong PHAM, Kevin J. HERRERA
  • Patent number: 10894149
    Abstract: A dilation catheter system includes a body, a guidewire, and a dilation catheter having an elongate shaft. The dilation catheter system may include a locking mechanism to prevent the guidewire from moving relative to the elongate shaft or to lock the guidewire to the dilation catheter to form a fixed wire unit. The dilation catheter system may include a stabilizing tube extending from an actuator, to provide rigidity to the guidewire. The dilation catheter may include a grip element having a plurality of grip features disposed thereon. The dilation catheter may include a cap biased toward a first longitudinal position and movable to a second longitudinal position. A guide catheter secured to the cap is prevented from changing angular orientation in the first longitudinal position and is free to change angular orientation in the second longitudinal position.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: January 19, 2021
    Assignee: Acclarent, Inc.
    Inventors: Randy S. Chan, John Anastasiadis, Samantha M. Weber, Ketan P. Muni, Don Q. Ngo-Chu
  • Patent number: 10888382
    Abstract: An apparatus includes a processing assembly, a plurality of field generators, and a patient tracking assembly. The patient tracking assembly includes a sensor assembly and a communication assembly. The sensor assembly includes a first body, a first sensor, and an electrical conduit. The first body selectively attaches to a patient. The first sensor is mounted to the first body and generates a signal in response to movement within an electromagnetic field. The communication assembly includes a second body and a cable. The second body rotates relative to the first body from a first rotational position to a second rotational position. The cable extends away from the second body. The cable communicates with the processing assembly. The electrical conduit couples the first sensor with the cable while the casing is in the first rotational position and the second rotational position.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: January 12, 2021
    Assignee: Acclarent, Inc.
    Inventors: Don Q. Ngo-Chu, Nawid E. Mehrzai, Azhang Hamlekhan, Jetmir Palushi, Fatemeh Akbarian, Ian Farrington, Anthanasios Papadakis
  • Patent number: 10881377
    Abstract: A dilation instrument and method of imaging an anatomy within a patient includes a dilation catheter having a catheter body, a fluid conduit extending along the catheter body, a dilator, and at least one ultrasonic transducer. The catheter body is configured to distally extend from an instrument body and move relative to the instrument body. The dilator is connected to the catheter body in fluid communication with the fluid conduit and configured to receive a fluid from the fluid conduit and thereby inflate from a contracted state to an expanded state. The at least one ultrasonic transducer positioned on the catheter body and configured to electrically connect to an ultrasonic generator. The at least one ultrasonic transducer is configured to emit a source ultrasonic signal toward an anatomy within a patient for producing a diagnostic or a therapeutic effect.
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: January 5, 2021
    Assignee: Acclarent, Inc.
    Inventors: Babak Ebrahimi, Don Q. Ngo-Chu, Jetmir Palushi, Ehsan Shameli
  • Patent number: 10874839
    Abstract: An apparatus includes a body, a shaft assembly, a deflection actuation assembly, and a dilation catheter. The shaft assembly includes a rigid proximal portion and a flexible distal portion. The deflection actuation assembly includes a rotary actuator and a first translatable actuation member at least partially disposed within the first rotary actuator. A second translatable actuation member extends through the shaft assembly and couples the first translatable actuation member with the flexible distal portion of the shaft assembly. The first rotary actuator is rotatable about a longitudinal axis to thereby drive the first and second translatable actuation members longitudinally. The flexible distal portion is configured to deflect away from the longitudinal axis in response to translation of the first and second translatable actuation members longitudinally. The dilation catheter is slidable relative to the shaft assembly and includes an expandable dilator.
    Type: Grant
    Filed: July 11, 2018
    Date of Patent: December 29, 2020
    Assignees: Acclarent, Inc., Biosense Webster (Israel) Ltd.
    Inventors: George L. Matlock, Yehuda Algawi, Ilya Sitnitsky, Andres C. Altmann, Ygal Zucker, Don Q. Ngo-Chu, Vadim Gliner, Christopher T. Beeckler, John H. Thinnes, Jr., Assaf Govari
  • Patent number: 10857333
    Abstract: A dilation apparatus includes a handle assembly, a dilator, a guidewire, and a steering assembly. The dilator is connected to the handle assembly and is configured to transition between an unexpanded state and an expanded state. The guidewire is longitudinally fixed relative to the dilator. The steering assembly is configured to laterally deflect at least a portion of the guidewire relative to the handle assembly. The steering assembly includes an actuator coupled with the handle assembly and a pull wire extending between the actuator and guidewire. A portion of the pull wire is attached to the guidewire. The actuator is configured to move the pull wire relative to the handle assembly in order to laterally deflect the at least a portion of the guidewire.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: December 8, 2020
    Assignee: Acclarent, Inc.
    Inventors: Don Q. Ngo-Chu, Jetmir Palushi, Itzhak Fang, Henry F. Salazar, David A. Smith, Jr.
  • Publication number: 20200315852
    Abstract: A system effectively narrows a patulous Eustachian tube (ET) of a patient with a guide catheter, instrument, and insert. The guide catheter includes a shaft, a lumen and a distal end configured to provide access the ET when the guide catheter is inserted into a head of the patient. The instrument comprises a shaft. The insert comprises a body configured to radially expand and retract between a non-expanded state and an expanded state. The insert is sized and shaped to be received within the first lumen when in the non-expanded state and is operable to expand to the expanded state to substantially reduce an effective diameter of the ET.
    Type: Application
    Filed: June 23, 2020
    Publication date: October 8, 2020
    Inventors: Don Q. Ngo-Chu, Jetmir Palushi, Ketan P. Muni
  • Patent number: 10736784
    Abstract: A system effectively narrows a patulous Eustachian tube (ET) of a patient with a guide catheter, instrument, and insert. The guide catheter includes a shaft, a lumen and a distal end configured to provide access the ET when the guide catheter is inserted into a head of the patient. The instrument comprises a shaft. The insert comprises a body configured to radially expand and retract between a non-expanded state and an expanded state. The insert is sized and shaped to be received within the first lumen when in the non-expanded state and is operable to expand to the expanded state to substantially reduce an effective diameter of the ET.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: August 11, 2020
    Assignee: Acclarent, Inc.
    Inventors: Don Q. Ngo-Chu, Jetmir Palushi, Ketan P. Muni
  • Publication number: 20200155226
    Abstract: Shown and described is electrophysiology catheter end effector having a balloon with three expandable membranes attached to each other such that wiring (for the electrodes or other sensors on the membrane surfaces) no longer extend from inside the first membrane yet at the same time is captured between the first membrane and a second membrane.
    Type: Application
    Filed: October 18, 2019
    Publication date: May 21, 2020
    Inventors: Jace P. Valls, Diana S. Gallardo, Charles E. Perkins, Don Q. Ngo-Chu
  • Patent number: 10639462
    Abstract: A catheter includes an articulation assembly that enables the distal end of the catheter to bend away from the longitudinal axis of a proximal portion of the catheter. The catheter may include a dilation catheter or a guide catheter. The articulation assembly may provide bending in response to changes in electrical current and/or in response to changes in temperature. In addition, or in the alternative, the articulation assembly may provide bending in response to translation of a wire member.
    Type: Grant
    Filed: October 18, 2016
    Date of Patent: May 5, 2020
    Assignee: Acclarent, Inc.
    Inventors: George L. Matlock, Don Q. Ngo-Chu, Randy S. Chan
  • Patent number: 10631890
    Abstract: A surgical instrument and method of removing a portion of a tissue mass includes a shaft, a cutting member, and an aspiration vent. The shaft has a shaft lumen, a shaft window, and a shaft edge. The cutting member is disposed within the shaft lumen and is configured to cyclically move from a first position to a second position relative to the shaft. The cutting member includes a cutting window opening, a cutting edge, and a suction lumen to cut the tissue portion with the cutting member in the first position. The aspiration vent extends through at least one of the shaft or the cutting member for fluid communication with the suction lumen to suction an airflow for urging the tissue portion away from the cutting edge and along the suction lumen.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: April 28, 2020
    Assignee: Acclarent, Inc.
    Inventors: Jetmir Palushi, Fatemeh Akbarian, Itzhak Fang, Don Q. Ngo-Chu, Henry F. Salazar