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).
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Publication number: 20230049555Abstract: 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: ApplicationFiled: October 31, 2022Publication date: February 16, 2023Applicant: Abbott Cardiovascular Systems Inc.Inventors: Diem Ta, Erik Eli, Senthil Eswaran
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Patent number: 11517457Abstract: 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: GrantFiled: July 3, 2019Date of Patent: December 6, 2022Assignee: ABBOTT CARDIOVASCULAR SYSTEMS INC.Inventors: Diem Ta, Erik Eli, Senthil Eswaran
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Publication number: 20210000625Abstract: 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: ApplicationFiled: July 3, 2019Publication date: January 7, 2021Applicant: ABBOTT CARDIOVASCULAR SYSTEMS INC.Inventors: Diem Ta, Erik Eli, Senthil Eswaran
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Patent number: 10278844Abstract: 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: GrantFiled: August 28, 2017Date of Patent: May 7, 2019Assignee: 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
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Publication number: 20190060093Abstract: 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: ApplicationFiled: October 29, 2018Publication date: February 28, 2019Inventors: Diem TA, Chad ABUNASSAR, Senthil ESWARAN
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Patent number: 10143573Abstract: 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: GrantFiled: December 17, 2015Date of Patent: December 4, 2018Assignee: Abbott Cardiovascular Systems Inc.Inventors: Diem Ta, Chad Abunassar, Senthil Eswaran
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Patent number: 9956099Abstract: 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: GrantFiled: December 17, 2015Date of Patent: May 1, 2018Assignee: ABBOTT CARDIOVASCULAR SYSTEMS INC.Inventors: Diem Ta, Chad Abunassar, Senthil Eswaran, Zhicheng Lin
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Publication number: 20180008438Abstract: 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: ApplicationFiled: August 28, 2017Publication date: January 11, 2018Inventors: Rommel Lumauig, Stephen D. Pacetti, Ni Ding, Joel Harrington, Xiao Ma, James P. Oberhauser, Jill McCoy, Chad J. Abunassar, Senthil Eswaran, Diem Ta
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Patent number: 9861507Abstract: 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: GrantFiled: December 17, 2015Date of Patent: January 9, 2018Assignee: ABBOTT CARDIOVASCULAR SYSTEMS INC.Inventors: Diem Ta, Chad Abunassar, Senthil Eswaran
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Patent number: 9795497Abstract: 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: GrantFiled: September 18, 2015Date of Patent: October 24, 2017Assignee: 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
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Patent number: 9757258Abstract: 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: GrantFiled: September 18, 2015Date of Patent: September 12, 2017Assignee: 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
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Publication number: 20170172769Abstract: 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: ApplicationFiled: December 17, 2015Publication date: June 22, 2017Inventors: Diem Ta, Chad Abunassar, Senthil Eswaran, Zhicheng Lin
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Publication number: 20170172768Abstract: 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: ApplicationFiled: December 17, 2015Publication date: June 22, 2017Inventors: Diem Ta, Chad Abunassar, Senthil Eswaran
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Publication number: 20170172770Abstract: 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: ApplicationFiled: December 17, 2015Publication date: June 22, 2017Inventors: Diem Ta, Chad Abunassar, Senthil Eswaran
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Publication number: 20160081827Abstract: 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: ApplicationFiled: September 18, 2015Publication date: March 24, 2016Inventors: Rommel Lumauig, Stephen D. Pacetti, Ni Ding, Joel Harrington, Xiao Ma, James P. Oberhauser, Jill McCoy, Chad J. Abunassar, Senthil Eswaran, Diem Ta
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Publication number: 20080103589Abstract: 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: ApplicationFiled: January 7, 2008Publication date: May 1, 2008Applicant: ADVANCED CARDIOVASCULAR SYSTEMS, INC.Inventors: E Tina Cheng, Santosh Prabhu, Kyle Krueger, Diem Ta, Carla Pienknagura
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Publication number: 20080009829Abstract: 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: ApplicationFiled: July 30, 2007Publication date: January 10, 2008Applicant: 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
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Publication number: 20060235506Abstract: 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: ApplicationFiled: April 13, 2005Publication date: October 19, 2006Inventors: Diem Ta, Timothy Limon, Andy Denison
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Publication number: 20060052860Abstract: 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: ApplicationFiled: August 31, 2005Publication date: March 9, 2006Inventors: Andreina Gomez, Diem Ta
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Publication number: 20050043782Abstract: 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: ApplicationFiled: October 27, 2003Publication date: February 24, 2005Inventors: Andreina Gomez, Diem Ta