Patents by Inventor Christopher Chia

Christopher Chia 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: 20200375735
    Abstract: Embodiments of the present disclosure provide a delivery apparatus for a prosthetic heart valve. Disclosed steerable catheters can include a handle, a steerable shaft extending from the handle, and a pull wire. The shaft can include a main lumen, an inner polymeric layer surrounding the main lumen, a braided layer surrounding the inner polymeric layer, and an outer polymeric layer surrounding the braided layer, the outer polymeric layer defining a pull wire lumen. The pull wire can extend from the handle and through the pull wire lumen and can have a distal end portion coupled to a distal end portion of the shaft.
    Type: Application
    Filed: August 17, 2020
    Publication date: December 3, 2020
    Applicant: Edwards Lifesciences Corporation
    Inventors: Philippe Marchand, David M. Taylor, Robert Milich, David J. Evans, Christopher Chia, Ronaldo C. Cayabyab, Robert Bowes
  • Publication number: 20200368021
    Abstract: Embodiments of the present disclosure provide a delivery apparatus for a prosthetic heart valve. Disclosed delivery apparatuses can include a handle, a first shaft extending from the handle, a second shaft disposed around the first shaft, and a valve cover. The valve cover can be coupled to a distal end portion of the first shaft and can be configured to house a prosthetic heart valve in a radially compressed state. The valve cover can have an outer diameter greater than an outer diameter of the second shaft, and the first shaft and valve cover can be movable together in an axial direction relative to the second shaft.
    Type: Application
    Filed: August 12, 2020
    Publication date: November 26, 2020
    Applicant: Edwards Lifesciences Corporation
    Inventors: Philippe Marchand, David M. Taylor, Robert Milich, David J. Evans, Christopher Chia, Ronaldo C. Cayabyab, Robert Bowes
  • Patent number: 10278815
    Abstract: An assembly includes a prosthetic heart valve and a delivery apparatus for implanting the prosthetic heart valve within the native aortic valve of a patient. The prosthetic heart valve has a radially compressible and expandable metallic stent and a flexible valvular structure mounted within the stent. The delivery apparatus has a handle, a first shaft having a proximal end portion and a distal end portion, a second shaft extending co-axially through the first shaft and having a proximal end portion and a distal end portion, the proximal end portions of the first and second shafts extending distally from the handle, a valve cover coupled to the distal end portion of the first shaft, and a nose piece coupled to the distal end portion of the second shaft.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: May 7, 2019
    Assignee: Edwards Lifesciences Corporation
    Inventors: Philippe Marchand, David M. Taylor, Robert Milich, David J. Evans, Christopher Chia, Ronaldo C. Cayabyab, Robert Bowes
  • Publication number: 20190110895
    Abstract: Embodiments of the present disclosure provide an introducer device for introducing a medical device into a patient's vasculature. In one embodiment, the introducer device comprises a housing, a distal sheath adapted to be inserted into a patient's vasculature with the housing positioned outside of the patient's vasculature, a hemostatic seal mounted within the housing, and a tube positioned within the housing and movable longitudinally relative to the hemostatic seal between a proximal position and a distal position. In the proximal position, a distal end of the tube is positioned proximal to the hemostatic seal with the hemostatic seal closed. In the distal position, the distal end of the tube extends through the hemostatic seal and permits the medical device to be inserted through the housing and into the patient's vasculature without contacting the hemostatic seal.
    Type: Application
    Filed: December 11, 2018
    Publication date: April 18, 2019
    Inventors: Philippe Marchand, David M. Taylor, Robert Milich, David J. Evans, Christopher Chia, Ronaldo C. Cayabyab, Robert Bowes
  • Patent number: 10179048
    Abstract: Embodiments of the present disclosure provide a delivery apparatus for delivering a prosthetic heart valve to a native valve site via the human vasculature without the need for a separate introducer sheath. The delivery apparatus is particularly well-suited for advancing a prosthetic valve through the aorta (i.e., in a retrograde approach) for replacing a stenotic aortic valve.
    Type: Grant
    Filed: February 11, 2016
    Date of Patent: January 15, 2019
    Assignee: Edwards Lifesciences Corporation
    Inventors: Philippe Marchand, David M. Taylor, Robert Milich, David J. Evans, Christopher Chia, Ronaldo C. Cayabyab, Robert Bowes
  • Publication number: 20180303608
    Abstract: An assembly includes a prosthetic heart valve and a delivery apparatus for implanting the prosthetic heart valve within the native aortic valve of a patient. The prosthetic heart valve has a radially compressible and expandable metallic stent and a flexible valvular structure mounted within the stent. The delivery apparatus has a handle, a first shaft having a proximal end portion and a distal end portion, a second shaft extending co-axially through the first shaft and having a proximal end portion and a distal end portion, the proximal end portions of the first and second shafts extending distally from the handle, a valve cover coupled to the distal end portion of the first shaft, and a nose piece coupled to the distal end portion of the second shaft.
    Type: Application
    Filed: June 25, 2018
    Publication date: October 25, 2018
    Inventors: Philippe Marchand, David M. Taylor, Robert Milich, David J. Evans, Christopher Chia, Ronaldo C. Cayabyab, Robert Bowes
  • Patent number: 10010418
    Abstract: An assembly includes a prosthetic heart valve and a delivery apparatus for implanting the prosthetic heart valve within the native aortic valve of a patient. The prosthetic heart valve has a radially compressible and expandable metallic stent and a flexible valvular structure mounted within the stent. The delivery apparatus has a handle, a first shaft having a proximal end portion and a distal end portion, a second shaft extending co-axially through the first shaft and having a proximal end portion and a distal end portion, the proximal end portions of the first and second shafts extending distally from the handle, a valve cover coupled to the distal end portion of the first shaft, and a nose piece coupled to the distal end portion of the second shaft.
    Type: Grant
    Filed: August 14, 2017
    Date of Patent: July 3, 2018
    Assignee: Edwards Lifesciences Corporation
    Inventors: Philippe Marchand, David M. Taylor, Robert Milich, David J. Evans, Christopher Chia, Ronaldo Cayabyab, Robert Bowes
  • Publication number: 20180036124
    Abstract: A delivery apparatus for a prosthetic heart valve includes a shaft, an inner balloon, and an outer balloon. The shaft has a lumen extending from a proximal end portion to a distal end portion and a plurality of openings formed in the distal end portion. The shaft is configured such that a fluid can flow through the lumen and the openings. The inner balloon has end portions and a center portion disposed between the end portions. The inner balloon is mounted on the distal end portion of the shaft and is in fluid communication with the openings of the shaft. When the inner balloon is inflated with the fluid, the end portions expand farther radially outwardly than the center portion. The outer balloon is mounted to the shaft and disposed over the inner balloon. The outer balloon is configured to fully expand after the inner balloon at least partially expands.
    Type: Application
    Filed: October 20, 2017
    Publication date: February 8, 2018
    Applicant: Edwards Lifesciences Corporation
    Inventors: Tri D. Tran, Ronaldo C. Cayabyab, David J. Evans, Sean Chow, Christopher Chia, Tamir S. Levi
  • Publication number: 20170360560
    Abstract: An assembly includes a prosthetic heart valve and a delivery apparatus for implanting the prosthetic heart valve within the native aortic valve of a patient. The prosthetic heart valve has a radially compressible and expandable metallic stent and a flexible valvular structure mounted within the stent. The delivery apparatus has a handle, a first shaft having a proximal end portion and a distal end portion, a second shaft extending co-axially through the first shaft and having a proximal end portion and a distal end portion, the proximal end portions of the first and second shafts extending distally from the handle, a valve cover coupled to the distal end portion of the first shaft, and a nose piece coupled to the distal end portion of the second shaft.
    Type: Application
    Filed: August 14, 2017
    Publication date: December 21, 2017
    Applicant: Edwards Lifesciences Corporation
    Inventors: Philippe Marchand, David M. Taylor, Robert Milich, David J. Evans, Christopher Chia, Ronaldo Cayabyab, Robert Bowes
  • Patent number: 9795477
    Abstract: Described herein are systems and methods from delivering prosthetic devices, such as prosthetic heart valves, through the body and into the heart for implantation therein. The prosthetic devices delivered with the delivery systems disclosed herein are, for example, radially expandable from a radially compressed state mounted on the delivery system to a radially expanded state for implantation using an inflatable balloon of the delivery system. Exemplary delivery routes through the body and into the heart include transfemoral routes, transapical routes, and transaortic routes, among others.
    Type: Grant
    Filed: April 22, 2016
    Date of Patent: October 24, 2017
    Assignee: Edwards Lifesciences Corporation
    Inventors: Tri D. Tran, Ronaldo C. Cayabyab, David J. Evans, Sean Chow, Christopher Chia
  • Publication number: 20160235532
    Abstract: Described herein are systems and methods from delivering prosthetic devices, such as prosthetic heart valves, through the body and into the heart for implantation therein. The prosthetic devices delivered with the delivery systems disclosed herein are, for example, radially expandable from a radially compressed state mounted on the delivery system to a radially expanded state for implantation using an inflatable balloon of the delivery system. Exemplary delivery routes through the body and into the heart include transfemoral routes, transapical routes, and transaortic routes, among others.
    Type: Application
    Filed: April 22, 2016
    Publication date: August 18, 2016
    Inventors: Tri D. Tran, Ronaldo C. Cayabyab, David J. Evans, Sean Chow, Christopher Chia
  • Publication number: 20160158009
    Abstract: Embodiments of the present disclosure provide a delivery apparatus for delivering a prosthetic heart valve to a native valve site via the human vasculature without the need for a separate introducer sheath. The delivery apparatus is particularly well-suited for advancing a prosthetic valve through the aorta (i.e., in a retrograde approach) for replacing a stenotic aortic valve.
    Type: Application
    Filed: February 11, 2016
    Publication date: June 9, 2016
    Inventors: Philippe Marchand, David M. Taylor, Robert Milich, David J. Evans, Christopher Chia, Ronaldo C. Cayabyab, Robert Bowes
  • Patent number: 9339384
    Abstract: Described herein are systems and methods from delivering prosthetic devices, such as prosthetic heart valves, through the body and into the heart for implantation therein. The prosthetic devices delivered with the delivery systems disclosed herein are, for example, radially expandable from a radially compressed state mounted on the delivery system to a radially expanded state for implantation using an inflatable balloon of the delivery system. Exemplary delivery routes through the body and into the heart include transfemoral routes, transapical routes, and transaortic routes, among others.
    Type: Grant
    Filed: July 26, 2012
    Date of Patent: May 17, 2016
    Assignee: Edwards Lifesciences Corporation
    Inventors: Tri D. Tran, Ronaldo Cayabyab, David J. Evans, Sean Chow, Christopher Chia
  • Publication number: 20140058502
    Abstract: Embodiments of the present disclosure provide a delivery apparatus for delivering a prosthetic heart valve to a native valve site via the human vasculature without the need for a separate introducer sheath. The delivery apparatus is particularly well-suited for advancing a prosthetic valve through the aorta (i.e., in a retrograde approach) for replacing a stenotic aortic valve.
    Type: Application
    Filed: October 29, 2013
    Publication date: February 27, 2014
    Applicant: Edwards Lifesciences Corporation
    Inventors: Philippe Marchand, David M. Taylor, Robert Milich, David J. Evans, Christopher Chia, Ronaldo Cayabyab, Robert Bowes
  • Patent number: 8568472
    Abstract: Embodiments of the present disclosure provide a delivery apparatus for delivering a prosthetic heart valve to a native valve site via the human vasculature. The delivery apparatus is particularly well-suited for advancing a prosthetic valve through the aorta (i.e., in a retrograde approach) for replacing a stenotic aortic valve.
    Type: Grant
    Filed: September 10, 2007
    Date of Patent: October 29, 2013
    Assignee: Edwards Lifesciences Corporation
    Inventors: Philippe Marchand, David M. Taylor, Robert Milich, Jr., David J. Evans, Christopher Chia, Ronaldo C. Cayabyab, Robert Royal Bowes
  • Publication number: 20130030519
    Abstract: Described herein are systems and methods from delivering prosthetic devices, such as prosthetic heart valves, through the body and into the heart for implantation therein. The prosthetic devices delivered with the delivery systems disclosed herein are, for example, radially expandable from a radially compressed state mounted on the delivery system to a radially expanded state for implantation using an inflatable balloon of the delivery system. Exemplary delivery routes through the body and into the heart include transfemoral routes, transapical routes, and transaortic routes, among others.
    Type: Application
    Filed: July 26, 2012
    Publication date: January 31, 2013
    Applicant: EDWARDS LIFESCIENCES CORPORATION
    Inventors: Tri D. Tran, Ronaldo Cayabyab, David J. Evans, Sean Chow, Christopher Chia
  • Publication number: 20080065011
    Abstract: Embodiments of the present disclosure provide a delivery apparatus for delivering a prosthetic heart valve to a native valve site via the human vasculature. The delivery apparatus is particularly well-suited for advancing a prosthetic valve through the aorta (i.e., in a retrograde approach) for replacing a stenotic aortic valve.
    Type: Application
    Filed: September 10, 2007
    Publication date: March 13, 2008
    Inventors: Philippe Marchand, David M. Taylor, Robert Milich, David J. Evans, Christopher Chia, Ronaldo C. Cayabyab, Robert Royal Bowes
  • Patent number: 6704690
    Abstract: A library monitoring system includes a number of borrowable items. Each item has a radio frequency identification device mounted thereon and the radio frequency identification device has a unique identification code. A processing unit is coupled to a database containing an indication of the location of each library item and is coupled to a borrowing location, a borrowed item returning location and the returned item sorting location. The borrowed item returning location includes a receptacle into which the borrowed item is inserted. The receptacle includes an antenna which detects an insertion of library item having a radio frequency identification device mounted thereon. The borrowed item returning location responds to the insertion of a library item into the receptacle detects the identification code and sends the identification code corresponding to the returned library item to the processing unit.
    Type: Grant
    Filed: December 8, 2000
    Date of Patent: March 9, 2004
    Assignees: St. Logitrack Pte Ltd., The National Library Board
    Inventors: Soo Keong Koh, Moon Ming Seah, Teck Khiam Christopher Chia
  • Publication number: 20020197364
    Abstract: A method of producing a liquid product packed in cans or bottles or other suitable containers is disclosed. The method includes injecting one or more of nitrogen, carbon dioxide and nitrous oxide gas into the liquid product. One preferred feature of the method is to chill the liquid product prior to injecting gas. Another preferred feature is to add liquid nitrogen to the head spaces of filled containers before closing the containers. A liquid product which includes nitrogen, carbon dioxide and nitrous oxide is also disclosed.
    Type: Application
    Filed: September 3, 2002
    Publication date: December 26, 2002
    Inventor: Christopher Chia Shyong Pan
  • Publication number: 20010016800
    Abstract: A library monitoring system includes a number of borrowable items. Each item has a radio frequency identification device mounted thereon and the radio frequency identification device has a unique identification code. A processing unit is coupled to a database containing an indication of the location of each library item and is coupled to a borrowing location, a borrowed item returning location and the returned item sorting location. The borrowed item returning location includes a receptacle into which the borrowed item is inserted. The receptacle includes an antenna which detects an insertion of library item having a radio frequency identification device mounted thereon. The borrowed item returning location responds to the insertion of a library item into the receptacle detects the identification code and sends the identification code corresponding to the returned library item to the processing unit.
    Type: Application
    Filed: December 8, 2000
    Publication date: August 23, 2001
    Applicant: ST LOGITRACK PTE LTD.
    Inventors: Soo Keong Koh, Moon Ming Seah, Teck Khiam Christopher Chia