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).
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Publication number: 20200375735Abstract: 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: ApplicationFiled: August 17, 2020Publication date: December 3, 2020Applicant: Edwards Lifesciences CorporationInventors: Philippe Marchand, David M. Taylor, Robert Milich, David J. Evans, Christopher Chia, Ronaldo C. Cayabyab, Robert Bowes
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Publication number: 20200368021Abstract: 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: ApplicationFiled: August 12, 2020Publication date: November 26, 2020Applicant: Edwards Lifesciences CorporationInventors: Philippe Marchand, David M. Taylor, Robert Milich, David J. Evans, Christopher Chia, Ronaldo C. Cayabyab, Robert Bowes
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Patent number: 10278815Abstract: 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: GrantFiled: June 25, 2018Date of Patent: May 7, 2019Assignee: Edwards Lifesciences CorporationInventors: Philippe Marchand, David M. Taylor, Robert Milich, David J. Evans, Christopher Chia, Ronaldo C. Cayabyab, Robert Bowes
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Publication number: 20190110895Abstract: 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: ApplicationFiled: December 11, 2018Publication date: April 18, 2019Inventors: Philippe Marchand, David M. Taylor, Robert Milich, David J. Evans, Christopher Chia, Ronaldo C. Cayabyab, Robert Bowes
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Patent number: 10179048Abstract: 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: GrantFiled: February 11, 2016Date of Patent: January 15, 2019Assignee: Edwards Lifesciences CorporationInventors: Philippe Marchand, David M. Taylor, Robert Milich, David J. Evans, Christopher Chia, Ronaldo C. Cayabyab, Robert Bowes
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Publication number: 20180303608Abstract: 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: ApplicationFiled: June 25, 2018Publication date: October 25, 2018Inventors: Philippe Marchand, David M. Taylor, Robert Milich, David J. Evans, Christopher Chia, Ronaldo C. Cayabyab, Robert Bowes
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Patent number: 10010418Abstract: 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: GrantFiled: August 14, 2017Date of Patent: July 3, 2018Assignee: Edwards Lifesciences CorporationInventors: Philippe Marchand, David M. Taylor, Robert Milich, David J. Evans, Christopher Chia, Ronaldo Cayabyab, Robert Bowes
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Publication number: 20180036124Abstract: 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: ApplicationFiled: October 20, 2017Publication date: February 8, 2018Applicant: Edwards Lifesciences CorporationInventors: Tri D. Tran, Ronaldo C. Cayabyab, David J. Evans, Sean Chow, Christopher Chia, Tamir S. Levi
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Publication number: 20170360560Abstract: 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: ApplicationFiled: August 14, 2017Publication date: December 21, 2017Applicant: Edwards Lifesciences CorporationInventors: Philippe Marchand, David M. Taylor, Robert Milich, David J. Evans, Christopher Chia, Ronaldo Cayabyab, Robert Bowes
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Patent number: 9795477Abstract: 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: GrantFiled: April 22, 2016Date of Patent: October 24, 2017Assignee: Edwards Lifesciences CorporationInventors: Tri D. Tran, Ronaldo C. Cayabyab, David J. Evans, Sean Chow, Christopher Chia
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Publication number: 20160235532Abstract: 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: ApplicationFiled: April 22, 2016Publication date: August 18, 2016Inventors: Tri D. Tran, Ronaldo C. Cayabyab, David J. Evans, Sean Chow, Christopher Chia
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Publication number: 20160158009Abstract: 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: ApplicationFiled: February 11, 2016Publication date: June 9, 2016Inventors: Philippe Marchand, David M. Taylor, Robert Milich, David J. Evans, Christopher Chia, Ronaldo C. Cayabyab, Robert Bowes
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Patent number: 9339384Abstract: 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: GrantFiled: July 26, 2012Date of Patent: May 17, 2016Assignee: Edwards Lifesciences CorporationInventors: Tri D. Tran, Ronaldo Cayabyab, David J. Evans, Sean Chow, Christopher Chia
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Publication number: 20140058502Abstract: 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: ApplicationFiled: October 29, 2013Publication date: February 27, 2014Applicant: Edwards Lifesciences CorporationInventors: Philippe Marchand, David M. Taylor, Robert Milich, David J. Evans, Christopher Chia, Ronaldo Cayabyab, Robert Bowes
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Patent number: 8568472Abstract: 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: GrantFiled: September 10, 2007Date of Patent: October 29, 2013Assignee: Edwards Lifesciences CorporationInventors: Philippe Marchand, David M. Taylor, Robert Milich, Jr., David J. Evans, Christopher Chia, Ronaldo C. Cayabyab, Robert Royal Bowes
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Publication number: 20130030519Abstract: 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: ApplicationFiled: July 26, 2012Publication date: January 31, 2013Applicant: EDWARDS LIFESCIENCES CORPORATIONInventors: Tri D. Tran, Ronaldo Cayabyab, David J. Evans, Sean Chow, Christopher Chia
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Publication number: 20080065011Abstract: 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: ApplicationFiled: September 10, 2007Publication date: March 13, 2008Inventors: Philippe Marchand, David M. Taylor, Robert Milich, David J. Evans, Christopher Chia, Ronaldo C. Cayabyab, Robert Royal Bowes
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Patent number: 6704690Abstract: 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: GrantFiled: December 8, 2000Date of Patent: March 9, 2004Assignees: St. Logitrack Pte Ltd., The National Library BoardInventors: Soo Keong Koh, Moon Ming Seah, Teck Khiam Christopher Chia
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Publication number: 20020197364Abstract: 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: ApplicationFiled: September 3, 2002Publication date: December 26, 2002Inventor: Christopher Chia Shyong Pan
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Publication number: 20010016800Abstract: 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: ApplicationFiled: December 8, 2000Publication date: August 23, 2001Applicant: ST LOGITRACK PTE LTD.Inventors: Soo Keong Koh, Moon Ming Seah, Teck Khiam Christopher Chia