Patents by Inventor Diem Ta

Diem Ta 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: 20230049555
    Abstract: An expandable stent for implantation in a body lumen, such as an artery, is disclosed. The stent consists of a plurality of radially expandable cylindrical rings generally aligned on a common longitudinal stent axis and interconnected by one or more interconnecting links placed so that the stent is flexible in the longitudinal direction. The link pattern is optimized to enhance longitudinal flexibility and high longitudinal strength compression of the stent.
    Type: Application
    Filed: October 31, 2022
    Publication date: February 16, 2023
    Applicant: Abbott Cardiovascular Systems Inc.
    Inventors: Diem Ta, Erik Eli, Senthil Eswaran
  • Patent number: 11517457
    Abstract: An expandable stent for implantation in a body lumen, such as an artery, is disclosed. The stent consists of a plurality of radially expandable cylindrical rings generally aligned on a common longitudinal stent axis and interconnected by one or more interconnecting links placed so that the stent is flexible in the longitudinal direction. The link pattern is optimized to enhance longitudinal flexibility and high longitudinal strength compression of the stent.
    Type: Grant
    Filed: July 3, 2019
    Date of Patent: December 6, 2022
    Assignee: ABBOTT CARDIOVASCULAR SYSTEMS INC.
    Inventors: Diem Ta, Erik Eli, Senthil Eswaran
  • Publication number: 20210000625
    Abstract: An expandable stent for implantation in a body lumen, such as an artery, is disclosed. The stent consists of a plurality of radially expandable cylindrical rings generally aligned on a common longitudinal stent axis and interconnected by one or more interconnecting links placed so that the stent is flexible in the longitudinal direction. The link pattern is optimized to enhance longitudinal flexibility and high longitudinal strength compression of the stent.
    Type: Application
    Filed: July 3, 2019
    Publication date: January 7, 2021
    Applicant: ABBOTT CARDIOVASCULAR SYSTEMS INC.
    Inventors: Diem Ta, Erik Eli, Senthil Eswaran
  • Patent number: 10278844
    Abstract: Methods are disclosed including thermally processing a scaffold to increase the radial strength of the scaffold when the scaffold is deployed from a crimped state to a deployed state such as a nominal deployment diameter. The thermal processing may further maintain or increase the expansion capability of the scaffold when expanded beyond the nominal diameter.
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: May 7, 2019
    Assignee: ABBOTT CARDIOVASCULAR SYSTEMS INC.
    Inventors: Rommel Lumauig, Stephen D. Pacetti, Ni Ding, Joel Harrington, Xiao Ma, James P. Oberhauser, Jill McCoy, Chad J. Abunassar, Senthil Eswaran, Diem Ta
  • Publication number: 20190060093
    Abstract: A thin-walled scaffold has a network of rings interconnected by links. A link includes holding a radiopaque marker connects adjacent rings. The link and/or a nearby ring is modified to compensate for the thin walls when the scaffold is crimped to a balloon.
    Type: Application
    Filed: October 29, 2018
    Publication date: February 28, 2019
    Inventors: Diem TA, Chad ABUNASSAR, Senthil ESWARAN
  • Patent number: 10143573
    Abstract: A thin-walled scaffold includes a radiopaque marker connected to a link. In a first example, the marker is retained on the strut by a head at one or both ends by swaging. In a second example of a thin-walled scaffold the link is modified to avoid interference during crimping. In a third example a distal end of the thin-walled scaffold is modified to improve deliverability of the thin-walled scaffold. These features are combined in a fourth example.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: December 4, 2018
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Diem Ta, Chad Abunassar, Senthil Eswaran
  • Patent number: 9956099
    Abstract: A thin-walled scaffold includes a radiopaque marker connected to a link. In a first example, the marker is retained on the strut by a head at one or both ends by swaging. In a second example of a thin-walled scaffold the link is modified to avoid interference during crimping. In a third example a distal end of the thin-walled scaffold is modified to improve deliverability of the thin-walled scaffold. These features are combined in a fourth example.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: May 1, 2018
    Assignee: ABBOTT CARDIOVASCULAR SYSTEMS INC.
    Inventors: Diem Ta, Chad Abunassar, Senthil Eswaran, Zhicheng Lin
  • Publication number: 20180008438
    Abstract: Methods are disclosed including thermally processing a scaffold to increase the radial strength of the scaffold when the scaffold is deployed from a crimped state to a deployed state such as a nominal deployment diameter. The thermal processing may further maintain or increase the expansion capability of the scaffold when expanded beyond the nominal diameter.
    Type: Application
    Filed: August 28, 2017
    Publication date: January 11, 2018
    Inventors: Rommel Lumauig, Stephen D. Pacetti, Ni Ding, Joel Harrington, Xiao Ma, James P. Oberhauser, Jill McCoy, Chad J. Abunassar, Senthil Eswaran, Diem Ta
  • Patent number: 9861507
    Abstract: A thin-walled scaffold includes a radiopaque marker connected to a link. In a first example, the marker is retained on the strut by a head at one or both ends by swaging. In a second example of a thin-walled scaffold the link is modified to avoid interference during crimping. In a third example a distal end of the thin-walled scaffold is modified to improve deliverability of the thin-walled scaffold. These features are combined in a fourth example.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: January 9, 2018
    Assignee: ABBOTT CARDIOVASCULAR SYSTEMS INC.
    Inventors: Diem Ta, Chad Abunassar, Senthil Eswaran
  • Patent number: 9795497
    Abstract: Methods are disclosed including thermally processing a scaffold to increase the radial strength of the scaffold when the scaffold is deployed from a crimped state to a deployed state such as a nominal deployment diameter. The thermal processing may further maintain or increase the expansion capability of the scaffold when expanded beyond the nominal diameter.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: October 24, 2017
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Rommel Lumauig, Stephen D. Pacetti, Ni Ding, Joel Harrington, Xiao Ma, James P. Oberhauser, Jill McCoy, Chad J. Abunassar, Senthil Eswaran, Diem Ta
  • Patent number: 9757258
    Abstract: Methods are disclosed including thermally processing a scaffold to increase the radial strength of the scaffold when the scaffold is deployed from a crimped state to a deployed state such as a nominal deployment diameter. The thermal processing may further maintain or increase the expansion capability of the scaffold when expanded beyond the nominal diameter.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: September 12, 2017
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Rommel Lumauig, Stephen D. Pacetti, Ni Ding, Joel Harrington, Xiao Ma, James P. Oberhauser, Jill McCoy, Chad J. Abunassar, Senthil Eswaran, Diem Ta
  • Publication number: 20170172769
    Abstract: A thin-walled scaffold includes a radiopaque marker connected to a link. In a first example, the marker is retained on the strut by a head at one or both ends by swaging. In a second example of a thin-walled scaffold the link is modified to avoid interference during crimping. In a third example a distal end of the thin-walled scaffold is modified to improve deliverability of the thin-walled scaffold. These features are combined in a fourth example.
    Type: Application
    Filed: December 17, 2015
    Publication date: June 22, 2017
    Inventors: Diem Ta, Chad Abunassar, Senthil Eswaran, Zhicheng Lin
  • Publication number: 20170172768
    Abstract: A thin-walled scaffold includes a radiopaque marker connected to a link. In a first example, the marker is retained on the strut by a head at one or both ends by swaging. In a second example of a thin-walled scaffold the link is modified to avoid interference during crimping. In a third example a distal end of the thin-walled scaffold is modified to improve deliverability of the thin-walled scaffold. These features are combined in a fourth example.
    Type: Application
    Filed: December 17, 2015
    Publication date: June 22, 2017
    Inventors: Diem Ta, Chad Abunassar, Senthil Eswaran
  • Publication number: 20170172770
    Abstract: A thin-walled scaffold includes a radiopaque marker connected to a link. In a first example, the marker is retained on the strut by a head at one or both ends by swaging. In a second example of a thin-walled scaffold the link is modified to avoid interference during crimping. In a third example a distal end of the thin-walled scaffold is modified to improve deliverability of the thin-walled scaffold. These features are combined in a fourth example.
    Type: Application
    Filed: December 17, 2015
    Publication date: June 22, 2017
    Inventors: Diem Ta, Chad Abunassar, Senthil Eswaran
  • Publication number: 20160081827
    Abstract: Methods are disclosed including thermally processing a scaffold to increase the radial strength of the scaffold when the scaffold is deployed from a crimped state to a deployed state such as a nominal deployment diameter. The thermal processing may further maintain or increase the expansion capability of the scaffold when expanded beyond the nominal diameter.
    Type: Application
    Filed: September 18, 2015
    Publication date: March 24, 2016
    Inventors: Rommel Lumauig, Stephen D. Pacetti, Ni Ding, Joel Harrington, Xiao Ma, James P. Oberhauser, Jill McCoy, Chad J. Abunassar, Senthil Eswaran, Diem Ta
  • Publication number: 20080103589
    Abstract: The present invention is directed to a flexible expandable stent for implantation in a body lumen, such as a coronary artery. The stent generally includes a series of metallic cylindrical rings longitudinally aligned on a common axis of the stent and interconnected by a series of links which be polymeric or metallic. Varying configurations and patterns of the links and rings provides longitudinal and flexural flexibility to the stent while maintaining sufficient column strength to space the cylindrical rings along the longitudinal axis and providing a low crimp profile, enhanced stent security and radial stiffness.
    Type: Application
    Filed: January 7, 2008
    Publication date: May 1, 2008
    Applicant: ADVANCED CARDIOVASCULAR SYSTEMS, INC.
    Inventors: E Tina Cheng, Santosh Prabhu, Kyle Krueger, Diem Ta, Carla Pienknagura
  • Publication number: 20080009829
    Abstract: An improved stent design and stent delivery catheter assembly for repairing a main vessel and a side branch vessel forming a bifurcation. The stent includes rings aligned along a common longitudinal axis and connected by links, where the stent has one or more portals for aligning with and partially expanding into the opening to the side branch vessel. The stent is implanted at a bifurcation so that the main stent section is in the main vessel, and the portal section covers at least a portion of the opening to the side branch vessel. A second stent can be implanted in the side branch vessel and abut the expanded central section to provide full coverage of the bifurcated area in the main vessel and the side branch vessel. Radiopaque markers on the stent and on the tip of the delivery catheter assist in aligning the portal section with the opening to the side branch vessel.
    Type: Application
    Filed: July 30, 2007
    Publication date: January 10, 2008
    Applicant: ABBOTT CARDIOVASCULAR SYSTEMS INC.
    Inventors: Diem Ta, Caroline WU, Brenna Hearn, Daniel Cox, Leonard Barbod, Jessie Delgado, Stephen Pacetti, Thomas Hatten, David Wrolstad, Kenneth Armstrong, Darrin Kent
  • Publication number: 20060235506
    Abstract: An expandable stent for implantation in a body lumen, such as an artery, is disclosed. The stent consists of a plurality of radially expandable cylindrical rings generally aligned on a common longitudinal stent axis and interconnected by one or more interconnecting links placed so that the stent is flexible in the longitudinal direction. The link pattern is optimized to reduce strain on the links and enhance longitudinal flexibility and security of the stent. The stent includes a distal end ring and a proximal end ring that have a length that is shorter than the length of the body rings.
    Type: Application
    Filed: April 13, 2005
    Publication date: October 19, 2006
    Inventors: Diem Ta, Timothy Limon, Andy Denison
  • Publication number: 20060052860
    Abstract: The invention is directed to an expandable stent for implanting in a body lumen, such as a coronary artery, peripheral artery, or other body lumen. The invention provides for an intravascular stent having a plurality of cylindrical rings connected by undulating links. The stent has a high degree of flexibility in the longitudinal direction, yet has adequate vessel wall coverage and radial strength sufficient to hold open an artery or other body lumen. The stent can be compressed or crimped onto a catheter to a very low profile since the peaks that are adjacent the curved portion of the undulating link are shorter than other peaks in the same cylindrical ring to prevent overlap yet still achieve a very low profile, tightly crimped stent onto a catheter.
    Type: Application
    Filed: August 31, 2005
    Publication date: March 9, 2006
    Inventors: Andreina Gomez, Diem Ta
  • Publication number: 20050043782
    Abstract: The invention is directed to an expandable stent for implanting in a body lumen, such as a coronary artery, peripheral artery, or other body lumen. The invention provides for an intravascular stent having a plurality of cylindrical rings connected by undulating links. The stent has a high degree of flexibility in the longitudinal direction, yet has adequate vessel wall coverage and radial strength sufficient to hold open an artery or other body lumen. The stent can be compressed or crimped onto a catheter to a very low profile since the peaks that are adjacent the curved portion of the undulating link are shorter than other peaks in the same cylindrical ring to prevent overlap yet still achieve a very low profile, tightly crimped stent onto a catheter.
    Type: Application
    Filed: October 27, 2003
    Publication date: February 24, 2005
    Inventors: Andreina Gomez, Diem Ta