Patents by Inventor Diem Uyen Ta

Diem Uyen 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: 20240130876
    Abstract: This invention is directed to an expandable stent for implantation in a body lumen, such as an artery, and a method for making it from a single length of tubing. The stent consists of a plurality of radially expandable cylindrical elements generally aligned on a common axis and interconnected by one or more links. A Y-shaped member is comprised of a U-shaped member and a link having a curved portion and a straight portion to improve the flexibility and thereby improve the fatigue performance of the Y-link junction.
    Type: Application
    Filed: September 28, 2023
    Publication date: April 25, 2024
    Applicant: Abbott Cardiovascular Systems Inc.
    Inventors: Diem Uyen Ta, Senthil K. Eswaran, Nianjiong Joan Bei
  • Patent number: 11844712
    Abstract: This invention is directed to an expandable stent for implantation in a body lumen, such as an artery, and a method for making it from a single length of tubing. The stent consists of a plurality of radially expandable cylindrical elements generally aligned on a common axis and interconnected by one or more links. A Y-shaped member is comprised of a U-shaped member and a link having a curved portion and a straight portion to improve the flexibility and thereby improve the fatigue performance of the Y-link junction.
    Type: Grant
    Filed: July 26, 2022
    Date of Patent: December 19, 2023
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Diem Uyen Ta, Senthil K. Eswaran, Nianjiong Joan Bei
  • Publication number: 20220395385
    Abstract: This invention is directed to an expandable stent for implantation in a body lumen, such as an artery, and a method for making it from a single length of tubing. The stent consists of a plurality of radially expandable cylindrical elements generally aligned on a common axis and interconnected by one or more links. A Y-shaped member is comprised of a U-shaped member and a link having a curved portion and a straight portion to improve the flexibility and thereby improve the fatigue performance of the Y-link junction.
    Type: Application
    Filed: July 26, 2022
    Publication date: December 15, 2022
    Applicant: Abbott Cardiovascular Systems Inc.
    Inventors: Diem Uyen Ta, Senthil K. Eswaran, Nianjiong Joan Bei
  • Patent number: 11426296
    Abstract: This invention is directed to an expandable stent for implantation in a body lumen, such as an artery, and a method for making it from a single length of tubing. The stent consists of a plurality of radially expandable cylindrical elements generally aligned on a common axis and interconnected by one or more links. A Y-shaped member is comprised of a U-shaped member and a link having a curved portion and a straight portion to improve the flexibility and thereby improve the fatigue performance of the Y-link junction.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: August 30, 2022
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Diem Uyen Ta, Senthil K. Eswaran, Nianjiong Joan Bei
  • Patent number: 11304833
    Abstract: The invention is directed to an expandable stent for implantation in a body lumen, such as an artery, and a method for making it from a single length of tubing. The stent consists of a plurality of radially expandable cylindrical elements generally aligned on a common axis and interconnected by one or more links. A Y-shaped member comprised of a link and a U-shaped member has relief dimples formed in the curved portion of a valley to reduce localized stress and thereby reduce fatigue failure that can lead to link structure failure.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: April 19, 2022
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Diem Uyen Ta, Senthil Kumar Eswaran
  • Publication number: 20200188146
    Abstract: The invention is directed to an expandable stent for implantation in a body lumen, such as an artery, and a method for making it from a single length of tubing. The stent consists of a plurality of radially expandable cylindrical elements generally aligned on a common axis and interconnected by one or more links. A Y-shaped member comprised of a link and a U-shaped member has relief dimples formed in the curved portion of a valley to reduce localized stress and thereby reduce fatigue failure that can lead to link structure failure.
    Type: Application
    Filed: February 26, 2020
    Publication date: June 18, 2020
    Applicant: Abbott Cardiovascular Systems Inc.
    Inventors: Diem Uyen Ta, Senthil Kumar Eswaran
  • Patent number: 10596018
    Abstract: An expandable stent for implanting in a body lumen, such as a coronary artery, peripheral artery, or other body lumen. In one aspect, the stent includes a butterfly pattern to which connecting links are attached. In another aspect, the stent embodies a non-directional structure.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: March 24, 2020
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventor: Diem Uyen Ta
  • Patent number: 10575973
    Abstract: The invention is directed to an expandable stent for implantation in a body lumen, such as an artery, and a method for making it from a single length of tubing. The stent consists of a plurality of radially expandable cylindrical elements generally aligned on a common axis and interconnected by one or more links. A Y-shaped member comprised of a link and a U-shaped member has relief dimples formed in the curved portion of a valley to reduce localized stress and thereby reduce fatigue failure that can lead to link structure failure.
    Type: Grant
    Filed: April 11, 2018
    Date of Patent: March 3, 2020
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Diem Uyen Ta, Senthil Kumar Eswaran
  • Publication number: 20200060854
    Abstract: This invention is directed to an expandable stent for implantation in a body lumen, such as an artery, and a method for making it from a single length of tubing. The stent consists of a plurality of radially expandable cylindrical elements generally aligned on a common axis and interconnected by one or more links. A Y-shaped member is comprised of a U-shaped member and a link having a curved portion and a straight portion to improve the flexibility and thereby improve the fatigue performance of the Y-link junction.
    Type: Application
    Filed: October 30, 2019
    Publication date: February 27, 2020
    Applicant: Abbott Cardiovascular Systems Inc.
    Inventors: Diem Uyen Ta, Senthil K. Eswaran, Nianjiong Joan Bei
  • Patent number: 10463514
    Abstract: This invention is directed to an expandable stent for implantation in a body lumen, such as an artery, and a method for making it from a single length of tubing. The stent consists of a plurality of radially expandable cylindrical elements generally aligned on a common axis and interconnected by one or more links. A Y-shaped member is comprised of a U-shaped member and a link having a curved portion and a straight portion to improve the flexibility and thereby improve the fatigue performance of the Y-link junction.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: November 5, 2019
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Diem Uyen Ta, Senthil K. Eswaran, Nianjiong Joan Bei
  • Publication number: 20190314174
    Abstract: The invention is directed to an expandable stent for implantation in a body lumen, such as an artery, and a method for making it from a single length of tubing. The stent consists of a plurality of radially expandable cylindrical elements generally aligned on a common axis and interconnected by one or more links. A Y-shaped member comprised of a link and a U-shaped member has relief dimples formed in the curved portion of a valley to reduce localized stress and thereby reduce fatigue failure that can lead to link structure failure.
    Type: Application
    Filed: April 11, 2018
    Publication date: October 17, 2019
    Applicant: Abbott Cardiovascular Systems Inc.
    Inventors: Diem Uyen Ta, Senthil Kumar Eswaran
  • Patent number: 10238513
    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 sufficient radial strength 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 inside radii of curvature of some of the peaks and valleys allow the stent to be crimped to a very low profile onto a catheter and increase radial strength over prior art stents.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: March 26, 2019
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Diem Uyen Ta, Erik D. Eli, Nianjiong Joan Bei
  • Publication number: 20190021889
    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 sufficient radial strength 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 inside radii of curvature of some of the peaks and valleys allow the stent to be crimped to a very low profile onto a catheter and increase radial strength over prior art stents.
    Type: Application
    Filed: July 19, 2017
    Publication date: January 24, 2019
    Applicant: Abbott Cardiovascular Systems Inc.
    Inventors: Diem Uyen Ta, Erik D. Eli, Nianjiong Joan Bei
  • Publication number: 20180369001
    Abstract: This invention is directed to an expandable stent for implantation in a body lumen, such as an artery, and a method for making it from a single length of tubing. The stent consists of a plurality of radially expandable cylindrical elements generally aligned on a common axis and interconnected by one or more links. A Y-shaped member is comprised of a U-shaped member and a link having a curved portion and a straight portion to improve the flexibility and thereby improve the fatigue performance of the Y-link junction.
    Type: Application
    Filed: June 27, 2017
    Publication date: December 27, 2018
    Applicant: Abbott Cardiovascular Systems Inc.
    Inventors: Diem Uyen Ta, Senthil K. Eswaran, Joan Bei
  • Publication number: 20170312106
    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: June 12, 2017
    Publication date: November 2, 2017
    Applicant: Abbott Cardiovascular Systems Inc.
    Inventors: Andreina P. Gomez, Diem Uyen Ta
  • Patent number: 9675480
    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: Grant
    Filed: August 31, 2012
    Date of Patent: June 13, 2017
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Andreina P. Gomez, Diem Uyen Ta
  • Publication number: 20170143521
    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: February 3, 2017
    Publication date: May 25, 2017
    Applicant: Abbott Cardiovascular Systems Inc.
    Inventors: Diem Uyen Ta, Timothy A. Limon, Andy E. Denison
  • Patent number: 9603727
    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: Grant
    Filed: January 9, 2014
    Date of Patent: March 28, 2017
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Diem Uyen Ta, Timothy A. Limon, Andy E. Denison
  • Publication number: 20170042710
    Abstract: An expandable stent for implanting in a body lumen, such as a coronary artery, peripheral artery, or other body lumen. In one aspect, the stent includes a butterfly pattern to which connecting links are attached. In another aspect, the stent embodies a non-directional structure.
    Type: Application
    Filed: October 27, 2016
    Publication date: February 16, 2017
    Applicant: Abbott Cardiovascular Systems Inc.
    Inventor: Diem Uyen Ta
  • Patent number: 9504587
    Abstract: An expandable stent for implanting in a body lumen, such as a coronary artery, peripheral artery, or other body lumen. In one aspect, the stent includes a butterfly pattern to which connecting links are attached. In another aspect, the stent embodies a non-directional structure.
    Type: Grant
    Filed: September 10, 2014
    Date of Patent: November 29, 2016
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventor: Diem Uyen Ta