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: 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
  • Patent number: 10765540
    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: May 16, 2019
    Date of Patent: September 8, 2020
    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: 20200030127
    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: October 1, 2019
    Publication date: January 30, 2020
    Applicant: Terumo Corporation
    Inventors: Tai D. Tieu, Gregory M. Cruise, Heather Griffin, Helen Nguyen, Minh Nguyen, Ponaka Pung, Shirley Vong
  • Patent number: 10543113
    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: March 3, 2017
    Date of Patent: January 28, 2020
    Assignee: 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: 10463515
    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 13, 2017
    Date of Patent: November 5, 2019
    Assignee: Terumo Corporation
    Inventors: Tai D. Tieu, Gregory M. Cruise, Heather Griffin, Helen Nguyen, Minh Nguyen, Ponaka Pung, Shirley Vong
  • Publication number: 20190269533
    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: May 16, 2019
    Publication date: September 5, 2019
    Applicant: 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: 20190231302
    Abstract: A system and method for quickly detaching an implant and for locating the detachment zone of a detachable implant. A sensor determines a sudden change in the local environment as the sensor passes from within a microcatheter to being exposed to the vasculature. The sensor may be a temperature sensor, ultrasonic sensor, pressure sensor or the like. If the detachable implant assembly uses a heater coil to detach the implant, the heater coil may be used as a sensor. Additionally, the implant itself may be used as a sensor if a change in electrical resistance is detectable as the implant exits the microcatheter and changes shape.
    Type: Application
    Filed: April 3, 2019
    Publication date: August 1, 2019
    Applicant: MicroVention, Inc.
    Inventor: Tai D. Tieu
  • Patent number: 10335297
    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 25, 2016
    Date of Patent: July 2, 2019
    Assignee: 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: 10299755
    Abstract: A system and method for quickly detaching an implant and for locating the detachment zone of a detachable implant. A sensor determines a sudden change in the local environment as the sensor passes from within a microcatheter to being exposed to the vasculature. The sensor may be a temperature sensor, ultrasonic sensor, pressure sensor or the like. If the detachable implant assembly uses a heater coil to detach the implant, the heater coil may be used as a sensor. Additionally, the implant itself may be used as a sensor if a change in electrical resistance is detectable as the implant exits the microcatheter and changes shape.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: May 28, 2019
    Assignee: MicroVention, Inc.
    Inventor: Tai D. Tieu
  • Publication number: 20190142617
    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: January 10, 2019
    Publication date: May 16, 2019
    Applicant: MicroVention, Inc.
    Inventors: Ponaka Pung, Tai D. Tieu, Ross Soltanian, Helen Nguyen, Oanh Nguyen, Britney Ngo
  • Publication number: 20190038294
    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: October 5, 2018
    Publication date: February 7, 2019
    Applicant: MicroVention, Inc.
    Inventors: Tai D. Tieu, Hideo Morita, Helen Nguyen
  • Patent number: 10182931
    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: September 19, 2016
    Date of Patent: January 22, 2019
    Assignee: MicroVention, Inc.
    Inventors: Ponaka Pung, Tai D. Tieu, Ross Soltanian, Helen Nguyen, Oanh Nguyen, Britney Ngo
  • Publication number: 20180311056
    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: July 2, 2018
    Publication date: November 1, 2018
    Applicant: MicroVention, Inc.
    Inventors: Ponaka Pung, Helen Nguyen, Tai D. Tieu
  • Patent number: 10058330
    Abstract: One embodiment according to the present invention includes an occlusion device in which the support structure or frame expands circumferentially within the lumen to secure an expansile plug or embolic material. Once in place, the expansile plug or embolic material expands, thereby occluding the target lumen. Another embodiment according to the present invention includes a radially expandable support structure having a closed portion for capturing subsequently delivered embolic material, such as embolic coils. For example, the structure may have a closed portion at its distal end or at its middle (forming an hourglass shape). Additionally, the closed portion may be formed from the support structure itself or from a discrete, second layer that is attached within the support structure.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: August 28, 2018
    Assignee: MicroVention, Inc.
    Inventors: Matthew Fitz, Tai D. Tieu, Shawn O'Leary
  • Patent number: 10039655
    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: January 12, 2016
    Date of Patent: August 7, 2018
    Assignee: MicroVention, Inc.
    Inventors: Ponaka Pung, Helen Nguyen, Tai D. Tieu
  • Patent number: 9968358
    Abstract: In one embodiment, the present invention relates to a mechanically releasable delivery system. More specifically, this embodiment includes an implantable device secured by tether at a distal end of the delivery system. The tether is fixed to the implantable device and looped around a selectively slidable mandrel. When the mandrel is retracted to expose its distal end, the looped tether slides off the mandrel, freeing the implantable device. Alternately, the tether can be fixed to the delivery system, wrapped around a portion of the implantable device and looped on to the slidable mandrel. Preferably, movement of the mandrel is controlled by an actuation control on the handle of the delivery system, allowing the user to selectively release the implantable device during a medical procedure.
    Type: Grant
    Filed: April 15, 2010
    Date of Patent: May 15, 2018
    Assignee: MicroVention, Inc.
    Inventors: Tai D. Tieu, Hideo Morita, Helen Nguyen
  • Publication number: 20180036155
    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: October 13, 2017
    Publication date: February 8, 2018
    Applicant: MicroVention, Inc.
    Inventors: Tai D. Tieu, Gregory M. Cruise, Heather Griffin, Helen Nguyen, Minh Nguyen, Ponaka Pung, Shirley Vong
  • Patent number: 9867725
    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: December 5, 2011
    Date of Patent: January 16, 2018
    Assignee: MicroVention, Inc.
    Inventors: Tai D. Tieu, Gregory M. Cruise, Heather Griffith, Helen Nguyen, Minh Nguyen, Ponaka Pung, Shirley Vong
  • Publication number: 20180008439
    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 5, 2011
    Publication date: January 11, 2018
    Inventors: Tai D. Tieu, Gregory M. Cruise, Heather Griffith, Helen Nguyen, Minh Nguyen, Ponaka Pung, Shirley Vong