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).
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Publication number: 20200368049Abstract: 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: ApplicationFiled: August 7, 2020Publication date: November 26, 2020Applicant: Terumo CorporationInventors: Shirley Vong, Priscilla Tsai, Cang Lam, Ross Soltanian, Greg Bak-Boychuk, Tai D. Tieu, Ponaka Pung, Arnold Tuason, Heather Griffith
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Patent number: 10806610Abstract: 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: GrantFiled: July 2, 2018Date of Patent: October 20, 2020Assignee: MicroVention, Inc.Inventors: Ponaka Pung, Helen Nguyen, Tai D. Tieu
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Patent number: 10765540Abstract: 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: GrantFiled: May 16, 2019Date of Patent: September 8, 2020Assignee: Terumo CorporationInventors: Shirley Vong, Priscilla Tsai, Cang Lam, Ross Soltanian, Greg Bak-Boychuk, Tai D. Tieu, Ponaka Pung, Arnold Tuason, Heather Griffith
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Publication number: 20200030127Abstract: 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: ApplicationFiled: October 1, 2019Publication date: January 30, 2020Applicant: Terumo CorporationInventors: Tai D. Tieu, Gregory M. Cruise, Heather Griffin, Helen Nguyen, Minh Nguyen, Ponaka Pung, Shirley Vong
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Patent number: 10543113Abstract: 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: GrantFiled: March 3, 2017Date of Patent: January 28, 2020Assignee: Terumo CorporationInventors: Shirley Vong, Priscilla Tsai, Cang Lam, Ross Soltanian, Greg Bak-Boychuk, Tai D. Tieu, Ponaka Pung, Arnold Tuason, Heather Griffith
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Patent number: 10463515Abstract: 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: GrantFiled: October 13, 2017Date of Patent: November 5, 2019Assignee: Terumo CorporationInventors: Tai D. Tieu, Gregory M. Cruise, Heather Griffin, Helen Nguyen, Minh Nguyen, Ponaka Pung, Shirley Vong
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Publication number: 20190269533Abstract: 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: ApplicationFiled: May 16, 2019Publication date: September 5, 2019Applicant: Terumo CorporationInventors: Shirley Vong, Priscilla Tsai, Cang Lam, Ross Soltanian, Greg Bak-Boychuk, Tai D. Tieu, Ponaka Pung, Arnold Tuason, Heather Griffith
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Publication number: 20190231302Abstract: 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: ApplicationFiled: April 3, 2019Publication date: August 1, 2019Applicant: MicroVention, Inc.Inventor: Tai D. Tieu
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Patent number: 10335297Abstract: 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: GrantFiled: August 25, 2016Date of Patent: July 2, 2019Assignee: Terumo CorporationInventors: Shirley Vong, Priscilla Tsai, Cang Lam, Ross Soltanian, Greg Bak-Boychuk, Tai D. Tieu, Ponaka Pung, Arnold Tuason, Heather Griffith
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Patent number: 10299755Abstract: 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: GrantFiled: December 18, 2015Date of Patent: May 28, 2019Assignee: MicroVention, Inc.Inventor: Tai D. Tieu
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Publication number: 20190142617Abstract: 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: ApplicationFiled: January 10, 2019Publication date: May 16, 2019Applicant: MicroVention, Inc.Inventors: Ponaka Pung, Tai D. Tieu, Ross Soltanian, Helen Nguyen, Oanh Nguyen, Britney Ngo
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Publication number: 20190038294Abstract: 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: ApplicationFiled: October 5, 2018Publication date: February 7, 2019Applicant: MicroVention, Inc.Inventors: Tai D. Tieu, Hideo Morita, Helen Nguyen
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Patent number: 10182931Abstract: 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: GrantFiled: September 19, 2016Date of Patent: January 22, 2019Assignee: MicroVention, Inc.Inventors: Ponaka Pung, Tai D. Tieu, Ross Soltanian, Helen Nguyen, Oanh Nguyen, Britney Ngo
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Publication number: 20180311056Abstract: 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: ApplicationFiled: July 2, 2018Publication date: November 1, 2018Applicant: MicroVention, Inc.Inventors: Ponaka Pung, Helen Nguyen, Tai D. Tieu
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Patent number: 10058330Abstract: 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: GrantFiled: May 11, 2012Date of Patent: August 28, 2018Assignee: MicroVention, Inc.Inventors: Matthew Fitz, Tai D. Tieu, Shawn O'Leary
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Patent number: 10039655Abstract: 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: GrantFiled: January 12, 2016Date of Patent: August 7, 2018Assignee: MicroVention, Inc.Inventors: Ponaka Pung, Helen Nguyen, Tai D. Tieu
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Patent number: 9968358Abstract: 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: GrantFiled: April 15, 2010Date of Patent: May 15, 2018Assignee: MicroVention, Inc.Inventors: Tai D. Tieu, Hideo Morita, Helen Nguyen
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Publication number: 20180036155Abstract: 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: ApplicationFiled: October 13, 2017Publication date: February 8, 2018Applicant: MicroVention, Inc.Inventors: Tai D. Tieu, Gregory M. Cruise, Heather Griffin, Helen Nguyen, Minh Nguyen, Ponaka Pung, Shirley Vong
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Patent number: 9867725Abstract: 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: GrantFiled: December 5, 2011Date of Patent: January 16, 2018Assignee: MicroVention, Inc.Inventors: Tai D. Tieu, Gregory M. Cruise, Heather Griffith, Helen Nguyen, Minh Nguyen, Ponaka Pung, Shirley Vong
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Publication number: 20180008439Abstract: 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: ApplicationFiled: December 5, 2011Publication date: January 11, 2018Inventors: Tai D. Tieu, Gregory M. Cruise, Heather Griffith, Helen Nguyen, Minh Nguyen, Ponaka Pung, Shirley Vong