Patents by Inventor Thomas Chien

Thomas Chien 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).

  • Patent number: 11883282
    Abstract: A prosthetic heart valve configured to replace a native heart valve and having a support frame configured to be reshaped into an expanded form in order to receive and/or support an expandable prosthetic heart valve therein is disclosed, together with methods of using same. The prosthetic heart valve may be configured to have a generally rigid and/or expansion-resistant configuration when initially implanted to replace a native valve (or other prosthetic heart valve), but to assume a generally expanded form when subjected to an outward force such as that provided by a dilation balloon or other mechanical expander.
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: January 30, 2024
    Assignee: EDWARDS LIFESCIENCES CORPORATION
    Inventors: Visith Chung, Da-Yu Chang, Brian S. Conklin, Grace Myong Kim, Louis A. Campbell, Donald E. Bobo, Jr., Myron Howanec, Jr., David S. Lin, Peng Norasing, Francis M. Tran, Mark Van Nest, Thomas Chien, Harvey H. Chen, Isidro L. Guerrero, Derrick Johnson, Paul A. Schmidt, Cindy Woo
  • Publication number: 20230404752
    Abstract: A prosthetic heart valve configured to replace a native heart valve and having a support frame configured to be reshaped into an expanded form in order to receive and/or support an expandable prosthetic heart valve therein is disclosed, together with methods of using same. The prosthetic heart valve may be configured to have a generally rigid and/or expansion-resistant configuration when initially implanted to replace a native valve (or other prosthetic heart valve), but to assume a generally expanded form when subjected to an outward force such as that provided by a dilation balloon or other mechanical expander.
    Type: Application
    Filed: September 6, 2023
    Publication date: December 21, 2023
    Inventors: Visith Chung, Da-Yu Chang, Brian S. Conklin, Grace Myong Kim, Louis A. Campbell, Donald E. Bobo, JR., Myron Howanec, JR., David S. Lin, Peng Norasing, Francis M. Tran, Mark Van Nest, Thomas Chien, Harvey H. Chen, Isidro L. Guerrero, Derrick Johnson, Paul A. Schmidt, Cindy Woo
  • Publication number: 20230389977
    Abstract: An ablation apparatus for creating a lesion in target tissue, the ablation apparatus including a handle, an elongate shaft extending from the handle to a distal tip, where the shaft includes a first portion, an ablation portion distal to the first portion and having an outer sheath, and at least one ablation energy element disposed within the outer sheath, where a space is formed between the at least one ablation energy element and the outer sheath. The ablation apparatus further includes a thermally conductive liner disposed within the space.
    Type: Application
    Filed: August 12, 2023
    Publication date: December 7, 2023
    Applicant: Adagio Medical, Inc.
    Inventors: Alexei Babkin, Thomas Chien, Kevin D. RUPP, Steven W. Kovalcheck
  • Patent number: 11751930
    Abstract: An ablation apparatus for creating a lesion in target tissue, the ablation apparatus including a handle, an elongate shaft extending from the handle to a distal tip, where the shaft includes a first portion, an ablation portion distal to the first portion and having an outer sheath, and at least one ablation energy element disposed within the outer sheath, where a space is formed between the at least one ablation energy element and the outer sheath. The ablation apparatus further includes a thermally conductive liner disposed within the space.
    Type: Grant
    Filed: January 8, 2019
    Date of Patent: September 12, 2023
    Assignee: ADAGIO MEDICAL, INC.
    Inventors: Alexei V. Babkin, Thomas Chien, Kevin D. Rupp, Steven W. Kovalcheck
  • Publication number: 20230200986
    Abstract: A prosthetic heart valve configured to replace a native heart valve and having a support frame configured to be reshaped into an expanded form in order to receive and/or support an expandable prosthetic heart valve therein is disclosed, together with methods of using same. The prosthetic heart valve may be configured to have a generally rigid and/or expansion-resistant configuration when initially implanted to replace a native valve (or other prosthetic heart valve), but to assume a generally expanded form when subjected to an outward force such as that provided by a dilation balloon or other mechanical expander.
    Type: Application
    Filed: February 13, 2023
    Publication date: June 29, 2023
    Inventors: Visith Chung, Da-Yu Chang, Brian S. Conklin, Grace Myong Kim, Louis A. Campbell, Donald E. Bobo, JR., Myron Howanec, JR., David S. Lin, Peng Norasing, Francis M. Tran, Mark Van Nest, Thomas Chien, Harvey H. Chen, Isidro L. Guerrero, Derrick Johnson, Paul A. Schmidt, Cindy Woo
  • Publication number: 20230072121
    Abstract: A quick-connect heart valve prosthesis that can be quickly and easily implanted during a surgical procedure is provided. The heart valve includes a substantially non-expandable, non-compressible prosthetic valve and a plastically-expandable frame, thereby enabling attachment to the annulus without sutures. A small number of guide sutures may be provided for aortic valve orientation. The prosthetic valve may be a commercially available valve with a sewing ring with the frame attached thereto. The frame may expand from a conical deployment shape to a conical expanded shape, and may include web-like struts connected between axially-extending posts. A system and method for deployment includes an integrated handle shaft and balloon catheter. A valve holder is stored with the heart valve and the handle shaft easily attaches thereto to improve valve preparation steps.
    Type: Application
    Filed: October 13, 2022
    Publication date: March 9, 2023
    Inventors: Rafael Pintor, Michael J. Scott, Thomas Chien, Harvey H. Chen, August R. Yambao, Lawrence J. Farhat, Andrew Phung, William C. Brunnett, Carey L. Cristea, Sara M. Walls, Kevin W. Zheng, Faisal Kalam, Qinggang Zeng
  • Patent number: 11576772
    Abstract: A prosthetic heart valve configured to replace a native heart valve and having a support frame configured to be reshaped into an expanded form in order to receive and/or support an expandable prosthetic heart valve therein is disclosed, together with methods of using same. The prosthetic heart valve may be configured to have a generally rigid and/or expansion-resistant configuration when initially implanted to replace a native valve (or other prosthetic heart valve), but to assume a generally expanded form when subjected to an outward force such as that provided by a dilation balloon or other mechanical expander.
    Type: Grant
    Filed: January 27, 2020
    Date of Patent: February 14, 2023
    Assignee: Edwards Lifesciences Corporation
    Inventors: Visith Chung, Da-Yu Chang, Brian S. Conklin, Grace Myong Kim, Louis A. Campbell, Donald E. Bobo, Jr., Myron Howanec, Jr., David S. Lin, Peng Norasing, Francis M. Tran, Mark Van Nest, Thomas Chien, Harvey H. Chen, Isidro L. Guerrero, Derrick Johnson, Paul A. Schmidt
  • Patent number: 11471279
    Abstract: A quick-connect heart valve prosthesis that can be quickly and easily implanted during a surgical procedure is provided. The heart valve includes a substantially non-expandable, non-compressible prosthetic valve and a plastically-expandable frame, thereby enabling attachment to the annulus without sutures. A small number of guide sutures may be provided for aortic valve orientation. The prosthetic valve may be a commercially available valve with a sewing ring with the frame attached thereto. The frame may expand from a conical deployment shape to a conical expanded shape, and may include web-like struts connected between axially-extending posts. A system and method for deployment includes an integrated handle shaft and balloon catheter. A valve holder is stored with the heart valve and the handle shaft easily attaches thereto to improve valve preparation steps.
    Type: Grant
    Filed: July 24, 2020
    Date of Patent: October 18, 2022
    Assignee: Edwards Lifesciences Corporation
    Inventors: Rafael Pintor, Michael J. Scott, Thomas Chien, Harvey H. Chen, August R. Yambao, Lawrence J. Farhat, Andrew Phung, William C. Brunnett, Carey L. Cristea, Sara M. Walls, Kevin W. Zheng, Faisal Kalam, Qinggang Zeng
  • Publication number: 20210059737
    Abstract: An ablation apparatus for creating a lesion in target tissue, the ablation apparatus including a handle, an elongate shaft extending from the handle to a distal tip, where the shaft includes a first portion, an ablation portion distal to the first portion and having an outer sheath, and at least one ablation energy element disposed within the outer sheath, where a space is formed between the at least one ablation energy element and the outer sheath. The ablation apparatus further includes a thermally conductive liner disposed within the space.
    Type: Application
    Filed: January 8, 2019
    Publication date: March 4, 2021
    Applicant: ADAGIO MEDICAL, INC.
    Inventors: Alexei V. BABKIN, Thomas CHIEN, Kevin D. RUPP, Steven W. KOVALCHECK
  • Patent number: 10864031
    Abstract: A method of creating a lesion in cardiac tissue where the method includes deploying a distal treatment section of an ablation catheter into a heart chamber and manipulating the distal treatment section against the cardiac tissue and into a curved shape that encloses a plurality of vessel entries in the heart chamber. The method further includes commencing a first application of ablation energy from the distal treatment section to the cardiac tissue and halting the first application of ablation energy to the cardiac tissue. The first application of ablation energy causes formation of a first continuous lesion in the cardiac tissue that encloses the plurality of vessel entries.
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: December 15, 2020
    Assignee: Adagio Medical, Inc.
    Inventors: Meital Mazor, James L. Cox, Alexei Babkin, Steven W. Kovalcheck, Thomas Chien, Nicolei King
  • Publication number: 20200352713
    Abstract: A quick-connect heart valve prosthesis that can be quickly and easily implanted during a surgical procedure is provided. The heart valve includes a substantially non-expandable, non-compressible prosthetic valve and a plastically-expandable frame, thereby enabling attachment to the annulus without sutures. A small number of guide sutures may be provided for aortic valve orientation. The prosthetic valve may be a commercially available valve with a sewing ring with the frame attached thereto. The frame may expand from a conical deployment shape to a conical expanded shape, and may include web-like struts connected between axially-extending posts. A system and method for deployment includes an integrated handle shaft and balloon catheter. A valve holder is stored with the heart valve and the handle shaft easily attaches thereto to improve valve preparation steps.
    Type: Application
    Filed: July 24, 2020
    Publication date: November 12, 2020
    Inventors: Rafael Pintor, Michael J. Scott, Thomas Chien, Harvey H. Chen, August R. Yambao, Lawrence J. Farhat, Andrew Phung, William C. Brunnett, Carey L. Cristea, Sara M. Walls, Kevin W. Zheng, Faisal Kalam, Qinggang Zeng
  • Publication number: 20200155309
    Abstract: A prosthetic heart valve configured to replace a native heart valve and having a support frame configured to be reshaped into an expanded form in order to receive and/or support an expandable prosthetic heart valve therein is disclosed, together with methods of using same. The prosthetic heart valve may be configured to have a generally rigid and/or expansion-resistant configuration when initially implanted to replace a native valve (or other prosthetic heart valve), but to assume a generally expanded form when subjected to an outward force such as that provided by a dilation balloon or other mechanical expander.
    Type: Application
    Filed: January 27, 2020
    Publication date: May 21, 2020
    Inventors: Visith Chung, Da-Yu Chang, Brian S. Conklin, Grace Myong Kim, Louis A. Campbell, Donald E. Bobo, JR., Myron Howanec, JR., David S. Lin, Peng Norasing, Francis M. Tran, Mark Van Nest, Thomas Chien, Harvey H. Chen, Isidro L. Guerrero, Derrick Johnson, Paul A. Schmidt
  • Publication number: 20200093593
    Abstract: A prosthetic heart valve configured to replace a native heart valve and having a support frame configured to be reshaped into an expanded form in order to receive and/or support an expandable prosthetic heart valve therein is disclosed, together with methods of using same. The prosthetic heart valve may be configured to have a generally rigid and/or expansion-resistant configuration when initially implanted to replace a native valve (or other prosthetic heart valve), but to assume a generally expanded form when subjected to an outward force such as that provided by a dilation balloon or other mechanical expander.
    Type: Application
    Filed: November 25, 2019
    Publication date: March 26, 2020
    Inventors: Visith Chung, Da-Yu Chang, Brian S. Conklin, Grace Myong Kim, Louis A. Campbell, Donald E. Bobo, JR., Myron Howanec, David S. Lin, Peng Norasing, Francis M. Tran, Mark Van Nest, Thomas Chien, Harvey H. Chen, Isidro L. Guerrero, Derrick Johnson, Paul A. Schmidt
  • Publication number: 20180303535
    Abstract: A cryoablation catheter for creating at least one lesion in tissue, the catheter having an elongate shaft with an intermediate section and a distal tip movable relative to the intermediate section. The catheter also includes at least one elongate control member extending along the intermediate section and secured to the distal tip where the elongate control member is movable relative to the intermediate section for causing movement of the distal tip relative to the intermediate section and at least one energy delivery member extending along the intermediate section to the distal tip where the at least one energy delivery member includes a linear first configuration and an elliptical second configuration. Manipulation of the control member adjusts the shape of the at least one energy delivery member.
    Type: Application
    Filed: May 23, 2016
    Publication date: October 25, 2018
    Inventors: Xiaoyu Yu, Steven Kovalcheck, Thomas Chien, Alexei Babkin, Nicolei King
  • Patent number: 9919137
    Abstract: An inflation system having two pressure vessels integrated into a balloon catheter. A pressurized chamber and a vacuum chamber are integrally attached to proximal end of the balloon catheter and activated by a common valve or switch. Pressure or vacuum is selectively transmitted to the balloon depending on the valve/switch position. The working fluid may be air, or a combination of air and saline with an intermediate piston/cylinder assembly. The balloon catheter may be a part of a heart valve delivery system with a balloon-expandable heart valve crimped onto the balloon.
    Type: Grant
    Filed: August 27, 2014
    Date of Patent: March 20, 2018
    Assignee: Edwards Lifesciences Corporation
    Inventors: Harvey H. Chen, Andrew Phung, Thomas Chien, Da-Yu Chang
  • Publication number: 20170151008
    Abstract: A method of creating a lesion in cardiac tissue where the method includes deploying a distal treatment section of an ablation catheter into a heart chamber and manipulating the distal treatment section against the cardiac tissue and into a curved shape that encloses a plurality of vessel entries in the heart chamber. The method further includes commencing a first application of ablation energy from the distal treatment section to the cardiac tissue and halting the first application of ablation energy to the cardiac tissue. The first application of ablation energy causes formation of a first continuous lesion in the cardiac tissue that encloses the plurality of vessel entries.
    Type: Application
    Filed: November 28, 2016
    Publication date: June 1, 2017
    Inventors: Meital Mazor, James L. Cox, Alexei Babkin, Steven W. Kovalcheck, Thomas Chien, Nicolei King
  • Patent number: 9504563
    Abstract: A quick-connect heart valve prosthesis that can be quickly and easily implanted during a surgical procedure is provided. The heart valve includes a substantially non-expandable, non-compressible prosthetic valve and a plastically-expandable frame, thereby enabling attachment to the annulus without sutures. A small number of guide sutures may be provided for aortic valve orientation. The prosthetic valve may be a commercially available valve with a sewing ring with the frame attached thereto. The frame may expand from a conical deployment shape to a conical expanded shape, and may include web-like struts connected between axially-extending posts. A system and method for deployment includes an integrated handle shaft and balloon catheter. A valve holder is stored with the heart valve and the handle shaft easily attaches thereto to improve valve preparation steps.
    Type: Grant
    Filed: January 27, 2014
    Date of Patent: November 29, 2016
    Assignee: Edwards Lifesciences Corporation
    Inventors: Rafael Pintor, Michael J. Scott, Thomas Chien, Harvey H. Chen, August R. Yambao, Lawrence J. Farhat, Andrew Phung, William C. Brunnett, Carey L. Cristea, Sara M. Walls, Kevin W. Zheng, Faisal Kalam, Qinggang Zeng
  • Patent number: 9242068
    Abstract: An infusion catheter includes a catheter body having a proximal end, a distal end, and two or more lumens extending therethrough. The infusion catheter also includes an infusion tube having a proximal end, a distal end, and one or more ports disposed therethrough. The first lumen of the catheter body is in fluid communication with the lumen of the infusion tube. A central member has a distal end connected to the distal end of the infusion tube, a proximal end, and a proximal portion slidably received in the second lumen of the catheter body. The infusion tube is disposed relative to the central member such that axial advancement of the central member relative to the catheter body radially collapses the infusion tube over the central member and axial retraction of the central member relative to the catheter body radially expands the infusion tube about the central member.
    Type: Grant
    Filed: July 17, 2009
    Date of Patent: January 26, 2016
    Assignee: Covidien LP
    Inventors: Michael Thai, Thomas Chien, Kelvin Ning, Robert Mcrae
  • Publication number: 20150066137
    Abstract: An inflation system having two pressure vessels integrated into a balloon catheter. A pressurized chamber and a vacuum chamber are integrally attached to proximal end of the balloon catheter and activated by a common valve or switch. Pressure or vacuum is selectively transmitted to the balloon depending on the valve/switch position. The working fluid may be air, or a combination of air and saline with an intermediate piston/cylinder assembly. The balloon catheter may be a part of a heart valve delivery system with a balloon-expandable heart valve crimped onto the balloon.
    Type: Application
    Filed: August 27, 2014
    Publication date: March 5, 2015
    Inventors: Harvey H. Chen, Andrew Phung, Thomas Chien, Da-Yu Chang
  • Publication number: 20140200661
    Abstract: A quick-connect heart valve prosthesis that can be quickly and easily implanted during a surgical procedure is provided. The heart valve includes a substantially non-expandable, non-compressible prosthetic valve and a plastically-expandable frame, thereby enabling attachment to the annulus without sutures. A small number of guide sutures may be provided for aortic valve orientation. The prosthetic valve may be a commercially available valve with a sewing ring with the frame attached thereto. The frame may expand from a conical deployment shape to a conical expanded shape, and may include web-like struts connected between axially-extending posts. A system and method for deployment includes an integrated handle shaft and balloon catheter. A valve holder is stored with the heart valve and the handle shaft easily attaches thereto to improve valve preparation steps.
    Type: Application
    Filed: January 27, 2014
    Publication date: July 17, 2014
    Applicant: EDWARDS LIFESCIENCES CORPORATION
    Inventors: Rafael Pintor, Michael J. Scott, Thomas Chien, Harvey H. Chen, August R. Yambao, Lawrence J. Farhat, Andrew Phung, William C. Brunnett, Carey L. Cristea, Sara M. Walls, Kevin W. Zheng, Faisal Kalam, Qinggang Zeng