Patents by Inventor Tai D. Tieu

Tai D. Tieu 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: 20240108352
    Abstract: An implant delivery system may have a pusher. The pusher may have an elongated shape. A distal end of the pusher may be configured to connect to an implant. The implant delivery system may have a tether connected to the pusher and to the implant. The implant delivery system may have a heating element mounted over the tether biased to contract a first surface of the heating element towards a second surface of the pusher. The implant delivery system may have an expander disposed between the first surface of the heating element and the second surface of the pusher. The expander may be configured to melt, allowing the first surface to contact the second surface, upon activation of the heating element.
    Type: Application
    Filed: December 13, 2023
    Publication date: April 4, 2024
    Applicant: MicroVention, Inc.
    Inventors: Tai D. Tieu, Hideo Morita, Helen Nguyen
  • Patent number: 11931277
    Abstract: Implant engagement mechanisms are disclosed for maintaining engagement with a stent until it has been fully deployed and expanded from a catheter or sheath. The apparatus, method and system involving these engagement mechanisms allow a physician to withdraw or retract a sheath prior to full deployment, thereby allowing for redeployment of the stent at a more desirable position.
    Type: Grant
    Filed: April 2, 2021
    Date of Patent: March 19, 2024
    Assignee: MicroVention, Inc.
    Inventors: Ponaka Pung, Tai D. Tieu, Ross Soltanian, Helen Nguyen, Oanh Nguyen, Britney Ngo
  • Patent number: 11857196
    Abstract: A system and method of delivering and detaching an implant within a body of a patient is described. A tether connects an implant with a delivery device. The delivery device includes a heater coil through which the tether passes. The inner diameter of the heater coil is about the same size or slightly larger than the outer diameter of the tether, allowing the tether to more efficiently break the tether during delivery.
    Type: Grant
    Filed: February 16, 2021
    Date of Patent: January 2, 2024
    Assignee: MicroVention, Inc.
    Inventors: Tai D. Tieu, Hideo Morita, Helen Nguyen
  • Patent number: 11801058
    Abstract: The present specification discloses improved liquid embolic compositions, methods of making such liquid embolic compositions, and methods and uses for such liquid embolic compositions.
    Type: Grant
    Filed: March 4, 2021
    Date of Patent: October 31, 2023
    Assignee: AccuMedical Beijing Ltd.
    Inventors: Tai D. Tieu, Hideo Morita
  • Publication number: 20230310185
    Abstract: A stent with varying porosity is described. The stent can be comprised of multiple stents attached together. A braided stent may have selected regions of increased thickness. The stent may be comprised of wires that are welded together at their ends in order to minimize vessel trauma. The stent may comprise a helically wound radiopaque wire wound through the stent.
    Type: Application
    Filed: June 5, 2023
    Publication date: October 5, 2023
    Applicant: MicroVention, Inc.
    Inventors: Ponaka Pung, Helen Nguyen, Tai D. Tieu
  • Patent number: 11696843
    Abstract: A stent with varying porosity is described. The stent can be comprised of multiple stents attached together. A braided stent may have selected regions of increased thickness. The stent may be comprised of wires that are welded together at their ends in order to minimize vessel trauma. The stent may comprise a helically wound radiopaque wire wound through the stent.
    Type: Grant
    Filed: September 15, 2020
    Date of Patent: July 11, 2023
    Assignee: MicroVention, Inc.
    Inventors: Ponaka Pung, Helen Nguyen, Tai D. Tieu
  • Publication number: 20230132550
    Abstract: In one embodiment according to the present invention, a stent is described having a generally cylindrical body formed from a single woven nitinol wire. The distal and proximal ends of the stent include a plurality of loops, some of which include marker members used for visualizing the position of the stent. In another embodiment, the previously described stent includes an inner flow diverting layer.
    Type: Application
    Filed: December 21, 2022
    Publication date: May 4, 2023
    Applicant: Terumo Corporation
    Inventors: Shirley Vong, Priscilla Tsai, Cang Lam, Ross Soltanian, Greg Bak-Boychuk, Tai D. Tieu, Ponaka Pung, Arnold Tuason, Heather Griffith
  • Patent number: 11564819
    Abstract: In one embodiment according to the present invention, a stent is described having a generally cylindrical body formed from a single woven nitinol wire. The distal and proximal ends of the stent include a plurality of loops, some of which include marker members used for visualizing the position of the stent. In another embodiment, the previously described stent includes an inner flow diverting layer.
    Type: Grant
    Filed: August 7, 2020
    Date of Patent: January 31, 2023
    Assignee: Terumo Corporation
    Inventors: Shirley Vong, Priscilla Tsai, Cang Lam, Ross Soltanian, Greg Bak-Boychuk, Tai D. Tieu, Ponaka Pung, Arnold Tuason, Heather Griffith
  • Publication number: 20220280163
    Abstract: The present specification discloses improved liquid embolic compositions, methods of making such liquid embolic compositions, and methods and uses for such liquid embolic compositions.
    Type: Application
    Filed: March 4, 2021
    Publication date: September 8, 2022
    Applicant: AccuMedical Beijing Ltd.
    Inventors: Tai D. Tieu, Hideo Morita
  • Patent number: 11351046
    Abstract: In one embodiment according to the present invention, a stent is described having a generally cylindrical body formed from a single woven nitinol wire. The distal and proximal ends of the stent include a plurality of loops, some of which include marker members used for visualizing the position of the stent. In another embodiment, the previously described stent includes an inner flow diverting layer.
    Type: Grant
    Filed: October 1, 2019
    Date of Patent: June 7, 2022
    Assignee: Terumo Corporation
    Inventors: Tai D. Tieu, Gregory M. Cruise, Heather Griffith, Helen Nguyen, Minh Nguyen, Ponaka Pung, Shirley Vong
  • Patent number: 11291566
    Abstract: In one embodiment according to the present invention, a stent is described having a generally cylindrical body formed from a single woven nitinol wire. The distal and proximal ends of the stent include a plurality of loops, some of which include marker members used for visualizing the position of the stent. In another embodiment, the previously described stent includes an inner flow diverting layer.
    Type: Grant
    Filed: April 29, 2021
    Date of Patent: April 5, 2022
    Assignee: Terumo Corporation
    Inventors: Tai D. Tieu, Gregory M. Cruise, Heather Griffith, Helen Nguyen, Minh Nguyen, Ponaka Pung, Shirley Vong
  • Publication number: 20210346181
    Abstract: In one embodiment according to the present invention, a stent is described having a generally cylindrical body formed from a single woven nitinol wire. The distal and proximal ends of the stent include a plurality of loops, some of which include marker members used for visualizing the position of the stent. In another embodiment, the previously described stent includes an inner flow diverting layer.
    Type: Application
    Filed: July 19, 2021
    Publication date: November 11, 2021
    Applicant: Terumo Corporation
    Inventors: Tai D. Tieu, Gregory M. Cruise, Heather Griffith, Helen Nguyen, Minh Nguyen, Ponaka Pung, Shirley Vong
  • Patent number: 11134954
    Abstract: A braided embolization apparatus is disclosed. In at least one embodiment, a plurality of individual strands are braided together as an embolic braid having a proximal end and an opposing distal end, the embolic braid forming an elongated primary shape capable of being inserted into a catheter. During use of the apparatus, upon the distal end of the embolic braid subsequently exiting the catheter, the embolic braid is configured for moving into a shape memorized secondary shape capable of filling a target area of a patient's vascular system.
    Type: Grant
    Filed: February 1, 2021
    Date of Patent: October 5, 2021
    Inventors: Tai D. Tieu, Jonathan D. Perez
  • Publication number: 20210244552
    Abstract: In one embodiment according to the present invention, a stent is described having a generally cylindrical body formed from a single woven nitinol wire. The distal and proximal ends of the stent include a plurality of loops, some of which include marker members used for visualizing the position of the stent. In another embodiment, the previously described stent includes an inner flow diverting layer.
    Type: Application
    Filed: April 29, 2021
    Publication date: August 12, 2021
    Applicant: Terumo Corporation
    Inventors: Tai D. Tieu, Gregory M. Cruise, Heather Griffith, Helen Nguyen, Minh Nguyen, Ponaka Pung, Shirley Vong
  • Publication number: 20210220158
    Abstract: Implant engagement mechanisms are disclosed for maintaining engagement with a stent until it has been fully deployed and expanded from a catheter or sheath. The apparatus, method and system involving these engagement mechanisms allow a physician to withdraw or retract a sheath prior to full deployment, thereby allowing for redeployment of the stent at a more desirable position.
    Type: Application
    Filed: April 2, 2021
    Publication date: July 22, 2021
    Applicant: MicroVention, Inc.
    Inventors: Ponaka Pung, Tai D. Tieu, Ross Soltanian, Helen Nguyen, Oanh Nguyen, Britney Ngo
  • Publication number: 20210161539
    Abstract: A system and method of delivering and detaching an implant within a body of a patient is described. A tether connects an implant with a delivery device. The delivery device includes a heater coil through which the tether passes. The inner diameter of the heater coil is about the same size or slightly larger than the outer diameter of the tether, allowing the tether to more efficiently break the tether during delivery.
    Type: Application
    Filed: February 16, 2021
    Publication date: June 3, 2021
    Applicant: MicroVention, Inc.
    Inventors: Tai D. Tieu, Hideo Morita, Helen Nguyen
  • Patent number: 11000394
    Abstract: Implant engagement mechanisms are disclosed for maintaining engagement with a stent until it has been fully deployed and expanded from a catheter or sheath. The apparatus, method and system involving these engagement mechanisms allow a physician to withdraw or retract a sheath prior to full deployment, thereby allowing for redeployment of the stent at a more desirable position.
    Type: Grant
    Filed: January 10, 2019
    Date of Patent: May 11, 2021
    Assignee: MicroVention, Inc.
    Inventors: Ponaka Pung, Tai D. Tieu, Ross Soltanian, Helen Nguyen, Oanh Nguyen, Britney Ngo
  • Publication number: 20210030570
    Abstract: A stent with varying porosity is described. The stent can be comprised of multiple stents attached together. A braided stent may have selected regions of increased thickness. The stent may be comprised of wires that are welded together at their ends in order to minimize vessel trauma. The stent may comprise a helically wound radiopaque wire wound through the stent.
    Type: Application
    Filed: September 15, 2020
    Publication date: February 4, 2021
    Applicant: MicroVention, Inc.
    Inventors: Ponaka Pung, Helen Nguyen, Tai D. Tieu
  • Publication number: 20200368049
    Abstract: In one embodiment according to the present invention, a stent is described having a generally cylindrical body formed from a single woven nitinol wire. The distal and proximal ends of the stent include a plurality of loops, some of which include marker members used for visualizing the position of the stent. In another embodiment, the previously described stent includes an inner flow diverting layer.
    Type: Application
    Filed: August 7, 2020
    Publication date: November 26, 2020
    Applicant: Terumo Corporation
    Inventors: Shirley Vong, Priscilla Tsai, Cang Lam, Ross Soltanian, Greg Bak-Boychuk, Tai D. Tieu, Ponaka Pung, Arnold Tuason, Heather Griffith
  • Patent number: 10806610
    Abstract: A stent with varying porosity is described. The stent can be comprised of multiple stents attached together. A braided stent may have selected regions of increased thickness. The stent may be comprised of wires that are welded together at their ends in order to minimize vessel trauma. The stent may comprise a helically wound radiopaque wire wound through the stent.
    Type: Grant
    Filed: July 2, 2018
    Date of Patent: October 20, 2020
    Assignee: MicroVention, Inc.
    Inventors: Ponaka Pung, Helen Nguyen, Tai D. Tieu