Patents by Inventor Mark Chau

Mark Chau 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: 20160331523
    Abstract: In one representative embodiment, an implantable prosthetic device comprises a spacer body portion configured to be disposed between native leaflets of a heart, and an anchor portion configured to secure the native leaflets against the spacer body portion, wherein the prosthetic device is movable between a compressed configuration, in which the spacer body portion is radially compressed and is axially spaced relative to the anchor portion, and an expanded configuration, in which the spacer body portion expands radially outwardly relative to the compressed configuration and overlaps at least a portion of the anchor portion.
    Type: Application
    Filed: May 13, 2016
    Publication date: November 17, 2016
    Applicant: Edwards Lifesciences Corporation
    Inventors: Mark Chau, David M. Taylor, Alexander J. Siegel, Christopher J. Olson, Sergio Delgado, Alexander H. Cooper, Lauren R. Freschauf, Asher L. Metchik, Matthew T. Winston, Cristobal R. Hernandez, Emil Karapetian, Bao Khuu, Eric Dixon
  • Publication number: 20160317290
    Abstract: This disclosure pertains generally to prosthetic devices and related methods for helping to seal native heart valves and prevent or reduce regurgitation therethrough, as well as devices and related methods for implanting such prosthetic devices. In some cases, a spacer having a single anchor can be implanted within a native heart valve. In some cases, a spacer having dual anchors can be implanted within a native heart valve. In some cases, devices can be used to extend the effective length of a native heart valve leaflet.
    Type: Application
    Filed: July 7, 2016
    Publication date: November 3, 2016
    Applicant: Edwards Lifesciences Corporation
    Inventors: Mark Chau, Travis Zenyo Oba, Sergio Delgado, Robert C. Taft
  • Patent number: 9439763
    Abstract: Embodiments of prosthetic valves for implantation within a native mitral valve are provided. One embodiment of a prosthetic valve includes a radially compressible main body and a one-way valve member. In some cases, the prosthetic valves also include ventricular anchors and/or an atrial portion coupled to and disposed outside of the main body. Methods, devices, and systems for delivering such prosthetic valves to the native mitral valve and implanting them therein are also provided.
    Type: Grant
    Filed: February 3, 2014
    Date of Patent: September 13, 2016
    Assignee: Edwards Lifesciences Corporation
    Inventors: Stephen C. Geist, Robert C. Taft, Travis Oba, Sam Sok, Matthew A. Peterson, Kevin M. Golemo, Mark Chau, Seung-Beom Yi
  • Patent number: 9433500
    Abstract: A prosthetic apparatus configured for implantation in the native mitral valve region of the heart includes a main body that is self-expandable from a compressed state to a radially expanded state. The prosthetic apparatus comprises at least one ventricular anchor coupled to the main body and disposed outside of the main body for capturing a native valve leaflet between the anchor and an outer surface of the main body. In one preferred method of implantation, the prosthetic apparatus is rotated within the native mitral valve region such that a portion of the anchor moves horizontally behind adjacent chordae for anchoring the prosthetic apparatus in the native mitral valve.
    Type: Grant
    Filed: July 16, 2015
    Date of Patent: September 6, 2016
    Assignee: Edwards Lifesciences Corporation
    Inventors: Mark Chau, Marlowe E. Patterson, Seung-Beom Yi, Stephen C. Geist, Travis Oba
  • Patent number: 9414918
    Abstract: This disclosure pertains generally to prosthetic devices and related methods for helping to seal native heart valves and prevent or reduce regurgitation therethrough, as well as devices and related methods for implanting such prosthetic devices. In some cases, a spacer having a single anchor can be implanted within a native heart valve. In some cases, a spacer having dual anchors can be implanted within a native heart valve. In some cases, devices can be used to extend the effective length of a native heart valve leaflet.
    Type: Grant
    Filed: September 5, 2013
    Date of Patent: August 16, 2016
    Assignee: Edwards Lifesciences Corporation
    Inventors: Mark Chau, Travis Oba, Sergio Delgado, Robert C. Taft
  • Publication number: 20160220368
    Abstract: A system for expanding a device in a conduit or orifice of a human body includes a balloon member that is movable from a first configuration to a second configuration. External surfaces of the balloon member can collectively have a non-cylindrical cross-section relative to a main axis of the balloon member, such that the external surfaces of the balloon member generally conform to the anatomical shape of the conduit or orifice when the balloon member is in the second configuration.
    Type: Application
    Filed: April 12, 2016
    Publication date: August 4, 2016
    Inventors: Mark Chau, Travis Zenyo Oba, Tammy Huntley, Qinggang Zeng, August R. Yambao, Rafael Pintor
  • Publication number: 20160184095
    Abstract: Systems and methods for replacing a heart valve. An expansible helical anchor is formed as multiple coils to support a valve prosthesis. At least one of the coils is expandable to a second, larger diameter upon application force from within the anchor. A gap is defined between adjacent coils sufficient to prevent engagement by at least one of the adjacent coils with the native heart valve. An expansible heart valve prosthesis is provided and is configured to be delivered into the anchor and expanded inside the coils into engagement. This moves the coil from the first diameter to the second diameter while securing the anchor and prosthesis together. The system further includes a seal on the expansible heart valve prosthesis configured to engage the helical anchor and prevent blood leakage past the heart valve prosthesis after implantation of the heart valve prosthesis in the helical anchor.
    Type: Application
    Filed: August 14, 2014
    Publication date: June 30, 2016
    Inventors: Paul A. Spence, Landon H. Tompkins, Mark Chau, Alexander J. Siegel
  • Patent number: 9314334
    Abstract: A system for expanding a device in a conduit or orifice of a human body includes an expansion device that is movable from a first configuration to a second configuration. External surfaces of the expansion device can collectively have a non-cylindrical cross-section relative to a main axis of the expansion device, such that the external surfaces of the expansion device generally conform to the anatomical shape of the conduit or orifice when the expansion device is in the second configuration.
    Type: Grant
    Filed: November 25, 2013
    Date of Patent: April 19, 2016
    Assignee: Edwards Lifesciences Corporation
    Inventors: Mark Chau, Travis Oba, Tammy Huntley, Qinggang Zeng, August R. Yambao, Rafael Pintor
  • Publication number: 20150320553
    Abstract: A prosthetic apparatus configured for implantation in the native mitral valve region of the heart includes a main body that is self-expandable from a compressed state to a radially expanded state. The prosthetic apparatus comprises at least one ventricular anchor coupled to the main body and disposed outside of the main body for capturing a native valve leaflet between the anchor and an outer surface of the main body. In one preferred method of implantation, the prosthetic apparatus is rotated within the native mitral valve region such that a portion of the anchor moves horizontally behind adjacent chordae for anchoring the prosthetic apparatus in the native mitral valve.
    Type: Application
    Filed: July 16, 2015
    Publication date: November 12, 2015
    Inventors: Mark Chau, Marlowe E. Patterson, Seung-Beom Yi, Stephen C. Geist, Travis Oba
  • Publication number: 20150230921
    Abstract: A coiled anchor for docking a mitral valve prosthesis at a native mitral valve of a heart has a first end, a second end, and a central axis extending between the first and second ends, and defines an inner space coaxial with the central axis. The coiled anchor includes a coiled core including a bio-compatible metal or metal alloy and having a plurality of turns extending around the central axis in a first position, and a cover layer around the core, the cover layer including a bio-compatible material that is less rigid than the metal or metal alloy of the coiled core.
    Type: Application
    Filed: February 20, 2015
    Publication date: August 20, 2015
    Inventors: Mark Chau, Alexander J. Siegel
  • Publication number: 20150230919
    Abstract: In a representative embodiment, an implantable prosthetic heart valve device comprises an elongated body having first and second end portions, the body being configured to be implanted around a native leaflet of a heart valve such that the first end portion is on an atrial side of the leaflet and the second end portion is on a ventricular side of the leaflet and such that the body can coapt with and move away from an opposing native leaflet during operation of the heart valve. The device can further comprises a fastener configured to be mounted on a suture that extends from one of the first or second end portions, through the native leaflet and through the other of the first or second end portions such that the body is secured to the native leaflet.
    Type: Application
    Filed: February 13, 2015
    Publication date: August 20, 2015
    Applicant: EDWARDS LIFESCIENCES CORPORATION
    Inventors: Mark Chau, David M. Taylor, Alexander J. Siegel, Stanton J. Rowe, Bao Khuu, Yoon H. Kwon
  • Publication number: 20150216656
    Abstract: A heart valve prosthesis that can be quickly and easily implanted during a surgical procedure is provided. The prosthetic valve has a base stent that is deployed at a treatment site, and a valve component configured to quickly connect to the base stent. The base stent may take the form of a self- or balloon-expandable stent that expands outward against the native valve with or without leaflet excision. The valve component has a non-expandable prosthetic valve and a self- or balloon-expandable coupling stent for attachment to the base stent, thereby fixing the position of the valve component relative to the base stent. The prosthetic valve may be a commercially available to valve with a sewing ring and the coupling stent attaches to the sewing ring. The system is particularly suited for rapid deployment of heart valves in a conventional open-heart surgical environment. A catheter-based system and method for deployment is provided.
    Type: Application
    Filed: April 10, 2015
    Publication date: August 6, 2015
    Inventors: Rafael Pintor, Mark Chau, Travis Oba, August R. Yambao, Louis A. Campbell, Tammy Huntley, Qinggang Zeng, Carey L. Cristea, Faisal Kalam
  • Publication number: 20150216660
    Abstract: A quick-connect heart valve prosthesis that can be quickly and easily implanted is provided. The heart valve includes a substantially non-expandable, non-compressible prosthetic valve and a plastically-expandable coupling stent, 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 coupling stent attached thereto. The coupling stent 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 a hollow two-piece handle through which a balloon catheter passes. A valve holder is stored with the heart valve and the handle easily attaches thereto to improve valve preparation steps.
    Type: Application
    Filed: April 13, 2015
    Publication date: August 6, 2015
    Inventors: Rafael Pintor, Mark Chau, Travis Oba, August R. Yambao, Louis A. Campbell, Tammy Huntley, Qinggang Zeng, Carey L. Cristea, Faisal Kalam
  • Publication number: 20150202044
    Abstract: Embodiments of prosthetic valves for implantation within a native mitral valve are provided. A preferred embodiment of a prosthetic valve includes a radially compressible main body and a one-way valve portion. The prosthetic valve further comprises at least one ventricular anchor coupled to the main body and disposed outside of the main body. A space is provided between an outer surface of the main body and the ventricular anchor for receiving a native mitral valve leaflet. The prosthetic valve preferably includes an atrial sealing member adapted for placement above the annulus of the mitral valve. Methods and devices for delivering and implanting the prosthetic valve are also described.
    Type: Application
    Filed: August 27, 2014
    Publication date: July 23, 2015
    Inventors: Mark CHAU, Marlowe PATTERSON, Seung YI, Travis OBA, Steve GEIST, Lucian LOZONSCHI, Georg LUTTER
  • Patent number: 9084676
    Abstract: Embodiments of an apparatus for treating a deficient mitral valve include an expandable spacer configured for placement between the native leaflets of the mitral valve, the spacer anchorable to a wall of the ventricle. Methods and apparatus for delivering and implanting the prosthetic are also described.
    Type: Grant
    Filed: April 17, 2014
    Date of Patent: July 21, 2015
    Assignee: Edwards Lifesciences Corporation
    Inventors: Mark Chau, Marlowe E. Patterson, Seung-Beom Yi, Stephen C. Geist, Travis Oba
  • Publication number: 20150127096
    Abstract: A method of implanting a prosthetic mitral valve assembly using a transapical procedure is disclosed. An incision is formed in the chest in the apex of the patient's heart. A delivery catheter containing the prosthetic mitral valve assembly is advanced over a guidewire into the patient's heart. The prosthetic mitral valve assembly is deployed from the delivery catheter into the native mitral valve. The prosthetic mitral valve assembly comprises a stent having a lower portion for placement between the leaflets of a native mitral valve and an upper portion having a flared end for placement above the annulus. The prosthetic mitral valve includes a valve portion having leaflets formed of pericardial tissue. A plurality of upwardly bent prongs are provided along an outer surface of the stent for preventing upward migration of the prosthetic mitral valve assembly after deployment.
    Type: Application
    Filed: December 29, 2014
    Publication date: May 7, 2015
    Applicant: EDWARDS LIFESCIENCES CORPORATION
    Inventors: Stanton J. Rowe, Mark Chau, Son V. Nguyen
  • Patent number: 9005277
    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 coupling stent, 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 coupling stent attached thereto. The coupling stent 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 a hollow two-piece handle through which a balloon catheter passes. A valve holder is stored with the heart valve and the handle easily attaches thereto to improve valve preparation steps.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: April 14, 2015
    Assignee: Edwards Lifesciences Corporation
    Inventors: Rafael Pintor, Mark Chau, Travis Zenyo Oba, August R. Yambao, Louis A. Campbell, Tammy Huntley, Qinggang Zeng, Carey L. Cristea, Faisal Kalam
  • Patent number: 9005278
    Abstract: A heart valve prosthesis that can be quickly and easily implanted during a surgical procedure is provided. The prosthetic valve has a base stent that is deployed at a treatment site, and a valve component configured to quickly connect to the base stent. The base stent may take the form of a self- or balloon-expandable stent that expands outward against the native valve with or without leaflet excision. The valve component has a non-expandable prosthetic valve and a self- or balloon-expandable coupling stent for attachment to the base stent, thereby fixing the position of the valve component relative to the base stent. The prosthetic valve may be a commercially available valve with a sewing ring and the coupling stent attaches to the sewing ring. The system is particularly suited for rapid deployment of heart valves in a conventional open-heart surgical environment.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: April 14, 2015
    Assignee: Edwards Lifesciences Corporation
    Inventors: Rafael Pintor, Mark Chau, Travis Zenyo Oba, August R. Yambao, Louis A. Campbell, Tammy Huntley, Quinggang Zeng, Carey L. Cristea, Faisal Kalam
  • Patent number: 8986373
    Abstract: Embodiments of a method for implanting a prosthetic valve at the native mitral valve region of the heart, the prosthetic valve including a main body that is radially compressible to a radially compressed state and self-expandable from the compressed state to a radially expanded state. The prosthetic apparatus also comprises at least one ventricular anchor coupled to the main body and disposed outside of the main body with a leaflet-receiving space between the anchor and an outer surface of the main body to receive a native valve leaflet. Apparatus for delivering and implanting the prosthetic valve are also described.
    Type: Grant
    Filed: September 12, 2013
    Date of Patent: March 24, 2015
    Assignee: Edwards Lifesciences Corporation
    Inventors: Mark Chau, Marlowe E. Patterson, Seung-Beom Yi, Stephen C. Geist, Travis Oba, David L. Hauser
  • Patent number: 8926691
    Abstract: Embodiments of an apparatus for treating a deficient mitral valve include an expandable spacer configured for placement between the native leaflets of the mitral valve, the spacer anchorable to a wall of the ventricle. Methods and apparatus for delivering and implanting the prosthetic are also described.
    Type: Grant
    Filed: September 12, 2013
    Date of Patent: January 6, 2015
    Assignee: Edwards Lifesciences Corporation
    Inventors: Mark Chau, Marlowe E. Patterson, Seung-Beom Yi, Stephen C. Geist, Travis Oba