Patents by Inventor Lilip Lau

Lilip Lau 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).

  • Cardiac harness
    Publication number: 20040147805
    Abstract: A cardiac harness for treating or preventing congestive heart failure is configured to be placed about at least a portion of a patient's heart so as to apply a mild compressive force on the heart. In one embodiment, the cardiac harness is configured so that the variation of load as a function of expansion through a selected range of expansion is represented generally in the form y=ax+b, and the value of “a” does not increase as the percent expansion increases.
    Type: Application
    Filed: October 31, 2003
    Publication date: July 29, 2004
    Inventors: Lilip Lau, Anuja Patel
  • Device for treating heart failure
    Publication number: 20040143156
    Abstract: A cardiac harness is configured to fit about a portion of a patient's heart so as to exert a compressive force on the heart during at least a portion of the cardiac cycle. The harness can be constructed of a plurality of individual modules assembled ex vivo or in vivo. The modules can have different physical characteristics, such as having different compliance, and may or may not include spring hinges. Portions of a cardiac harness can be connected to each other using a coupling mechanism such as, for example, a zip coupler.
    Type: Application
    Filed: January 9, 2004
    Publication date: July 22, 2004
    Inventors: Lilip Lau, William Hartigan, Anuja Patel
  • Device for treating heart failure
    Publication number: 20040143155
    Abstract: A cardiac harness is configured to fit about a portion of a patient's heart so as to exert a compressive force on the heart during at least a portion of the cardiac cycle. The harness can be constructed of a plurality of individual modules assembled ex vivo or in vivo. The modules can have different physical characteristics, such as having different compliance, and may or may not include spring hinges. Portions of a cardiac harness can be connected to each other using a coupling mechanism such as, for example, a zip coupler.
    Type: Application
    Filed: January 9, 2004
    Publication date: July 22, 2004
    Inventors: Lilip Lau, William Hartigan, Anuja Patel
  • Cardiac harness
    Publication number: 20040143154
    Abstract: A cardiac harness for treating or preventing congestive heart failure is configured to be placed about at least a portion of a patient's heart so as to apply a mild compressive force on the heart. In one embodiment, the cardiac harness comprises a plurality of spaced apart conductive panels arranged so that there is no electrical continuity circumferentially around the harness. In an additional embodiment, a cardiac harness is provided that is insulated so as not to conduct electricity circumferentially about the harness.
    Type: Application
    Filed: September 5, 2003
    Publication date: July 22, 2004
    Inventors: Lilip Lau, James Hong, Steven Meyer, Matthew G. Fishler, Craig Mar, Anuja H. Patel, Sieu Duong
  • Expandable cardiac harness for treating congestive heart failure
    Publication number: 20040106848
    Abstract: A cardiac harness for treating congestive heart failure is disclosed. The harness applies elastic, compressive reinforcement on the left ventricle to reduce deleterious wall tension and to resist shape change of the ventricle during the mechanical cardiac cycle. Rather than imposing a dimension beyond which the heart cannot expand, the harness provides no hard limit over the range of diastolic expansion of the ventricle. Instead, the harness follows the contour of the heart throughout diastole and continuously exerts gentle resistance to stretch. Also disclosed is a method of delivering the cardiac harness to the heart minimally invasively.
    Type: Application
    Filed: October 23, 2003
    Publication date: June 3, 2004
    Inventors: Lilip Lau, Bill Hartigan
  • Expandable stents and method for making same
    Publication number: 20040098080
    Abstract: The invention is directed to an expandable stent for implantation in a body lumen, such as an artery, and a method for making it from a single length of tubing. The stent consists of a plurality of radially expandable cylindrical elements generally aligned on a common axis and interconnected by one or more interconnective elements. The individual radially expandable cylindrical elements consist of ribbon-like material disposed in an undulating pattern. Portions of the expanded stent project outwardly into engagement with the vessel wall to more securely attach the stent.
    Type: Application
    Filed: July 24, 2003
    Publication date: May 20, 2004
    Inventors: Lilip Lau, William M. Hartigan, John J. Frantzen
  • Device for treating heart failure
    Patent number: 6723041
    Abstract: A cardiac harness is configured to fit about a portion of a patient's heart so as to exert a compressive force on the heart during at least a portion of the cardiac cycle. The harness can be constructed of a plurality of individual modules assembled ex vivo or in vivo. The modules can have different physical characteristics, such as having different compliance, and may or may not include spring hinges. Portions of a cardiac harness can be connected to each other using a coupling mechanism such as, for example, a zip coupler.
    Type: Grant
    Filed: September 10, 2002
    Date of Patent: April 20, 2004
    Inventors: Lilip Lau, William Hartigan, Anuja Patel
  • Expandable cardiac harness for treating congestive heart failure
    Patent number: 6702732
    Abstract: A cardiac harness for treating congestive heart failure is disclosed. The harness applies elastic, compressive reinforcement on the left ventricle to reduce deleterious wall tension and to resist shape change of the ventricle during the mechanical cardiac cycle. Rather than imposing a dimension beyond which the heart cannot expand, the harness provides no hard limit over the range of diastolic expansion of the ventricle. Instead, the harness follows the contour of the heart throughout diastole and continuously exerts gentle resistance to stretch. Also disclosed is a method of delivering the cardiac harness to the heart minimally invasively.
    Type: Grant
    Filed: August 8, 2000
    Date of Patent: March 9, 2004
    Assignee: Paracor Surgical, Inc.
    Inventors: Lilip Lau, Bill Hartigan
  • Expandable stents and method for making same
    Patent number: 6689159
    Abstract: The invention is directed to an expandable stent for implantation in a body lumen, such as an artery, and a method for making it from a single length of tubing. The stent consists of a plurality of radially expandable cylindrical elements generally aligned on a common axis and interconnected by one or more interconnective elements. The individual radially expandable cylindrical elements consist of ribbon-like material disposed in an undulating pattern. Portions of the expanded stent project outwardly into engagement with the vessel wall to more securely attach the stent.
    Type: Grant
    Filed: May 1, 2003
    Date of Patent: February 10, 2004
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Lilip Lau, William M. Hartigan, John J. Frantzen
  • Expandable cardiac harness for treating congestive heart failure
    Patent number: 6682474
    Abstract: A cardiac harness for treating congestive heart failure is disclosed. The harness applies elastic, compressive reinforcement on the left ventricle to reduce deleterious wall tension and to resist shape change of the ventricle during the mechanical cardiac cycle. Rather than imposing a dimension beyond which the heart cannot expand, the harness provides no hard limit over the range of diastolic expansion of the ventricle. Instead, the harness follows the contour of the heart throughout diastole and continuously exerts gentle resistance to stretch. Also disclosed is a method of delivering the cardiac harness to the heart minimally invasively.
    Type: Grant
    Filed: September 10, 2001
    Date of Patent: January 27, 2004
    Assignee: Paracor Surgical, Inc.
    Inventors: Lilip Lau, Bill Hartigan
  • Expandable cardiac harness for treating congestive heart failure
    Patent number: 6663558
    Abstract: A cardiac harness for treating congestive heart failure is disclosed. The harness applies elastic, compressive reinforcement on the left ventricle to reduce deleterious wall tension and to resist shape change of the ventricle during the mechanical cardiac cycle. Rather than imposing a dimension beyond which the heart cannot expand, the harness provides no hard limit over the range of diastolic expansion of the ventricle. Instead, the harness follows the contour of the heart throughout diastole and continuously exerts gentle resistance to stretch. Also disclosed is a method of delivering the cardiac harness to the heart minimally invasively.
    Type: Grant
    Filed: September 10, 2001
    Date of Patent: December 16, 2003
    Assignee: Paracor Surgical, Inc.
    Inventors: Lilip Lau, Bill Hartigan
  • Procedures for introducing stents and stent-grafts
    Publication number: 20030208260
    Abstract: This invention is a medical device and a method of using it. The device is a foldable stent or stent-graft which may be percutaneously delivered with (or on) a catheter, typically an endovascular catheter, to a body cavity or lumen and then expanded. It may also be delivered or via surgical (or other) techniques. The expandable stent structure utilizes torsional members which distribute bending and folding loads in such a way that the stent is not plastically deformed. The stent's configuration allows it to be folded or otherwise compressed to a very small diameter prior to deployment without changing the length of the stent. The graft component cooperating with the stent is tubular and preferably is blood-compatible material which may, if desired, be reinforced with fibers. The stent is able to provide collapsible support for otherwise frangible graft material.
    Type: Application
    Filed: May 9, 2003
    Publication date: November 6, 2003
    Inventors: Lilip Lau, Charles T. Maroney, William M. Hartigan, Sharon Lam
  • Expandable stents and method for making same
    Publication number: 20030195615
    Abstract: The invention is directed to an expandable stent for implantation in a body lumen, such as an artery, and a method for making it from a single length of tubing. The stent consists of a plurality of radially expandable cylindrical elements generally aligned on a common axis and interconnected by one or more interconnective elements. The individual radially expandable cylindrical elements consist of ribbon-like material disposed in an undulating pattern. Portions of the expanded stent project outwardly into engagement with the vessel wall to more securely attach the stent.
    Type: Application
    Filed: May 1, 2003
    Publication date: October 16, 2003
    Inventors: Lilip Lau, William M. Hartigan, John J. Frantzen
  • Expandable stents and method for making same
    Publication number: 20030195612
    Abstract: The invention is directed to an expandable stent for implantation in a body lumen, such as an artery, and a method for making it from a single length of tubing. The stent consists of a plurality of radially expandable cylindrical elements generally aligned on a common axis and interconnected by one or more interconnective elements. The individual radially expandable cylindrical elements consist of ribbon-like material disposed in an undulating pattern. Portions of the expanded stent project outwardly into engagement with the vessel wall to more securely attach the stent.
    Type: Application
    Filed: May 1, 2003
    Publication date: October 16, 2003
    Inventors: Lilip Lau, William M. Hartigan, John J. Frantzen
  • Expandable stents and method for making same
    Patent number: 6629991
    Abstract: The invention is directed to an expandable stent for implantation in a body lumen, such as an artery, and a method for making it from a single length of tubing. The stent consists of a plurality of radially expandable cylindrical elements generally aligned on a common axis and interconnected by one or more interconnective elements. The individual radially expandable cylindrical elements consist of ribbon-like material disposed in an undulating pattern. Portions of the expanded stent project outwardly into engagement with the vessel wall to more securely attach the stent.
    Type: Grant
    Filed: June 1, 1999
    Date of Patent: October 7, 2003
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Lilip Lau, William M. Hartigan, John J. Frantzen
  • Expandable stents and method for making same stent delivery system
    Patent number: 6626933
    Abstract: The invention is directed to an expandable stent for implantation in a body lumen, such as an artery, and a method for making it from a single length of tubing. The stent consists of a plurality of radially expandable cylindrical elements generally aligned on a common axis and interconnected by one or more interconnective elements. The individual radially expandable cylindrical elements consist of ribbon-like material disposed in an undulating pattern. Portions of the expanded stent project outwardly into engagement with the vessel wall to more securely attach the stent.
    Type: Grant
    Filed: June 1, 1999
    Date of Patent: September 30, 2003
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Lilip Lau, William M. Hartigan, John J. Frantzen
  • Method of deploying a stent in a body lumen
    Patent number: 6620193
    Abstract: The invention is directed to an expandable stent for implantation in a body lumen, such as an artery, and a method for making it from a single length of tubing. The stent consists of a plurality of radially expandable cylindrical elements generally aligned on a common axis and interconnected by one or more interconnective elements. The individual radially expandable cylindrical elements consist of ribbon-like material disposed in an undulating pattern. Portions of the expanded stent project outwardly into engagement with the vessel wall to more securely attach the stent.
    Type: Grant
    Filed: June 1, 1999
    Date of Patent: September 16, 2003
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Lilip Lau, William M. Hartigan, John J. Frantzen
  • Expandable cardiac harness for treating congestive heart failure
    Patent number: 6612979
    Abstract: A cardiac harness for treating congestive heart failure is disclosed. The harness applies elastic, compressive reinforcement on the left ventricle to reduce deleterious wall tension and to resist shape change of the ventricle during the mechanical cardiac cycle. Rather than imposing a dimension beyond which the heart cannot expand, the harness provides no hard limit over the range of diastolic expansion of the ventricle. Instead, the harness follows the contour of the heart throughout diastole and continuously exerts gentle resistance to stretch. Also disclosed is a method of delivering the cardiac harness to the heart minimally invasively.
    Type: Grant
    Filed: September 14, 2001
    Date of Patent: September 2, 2003
    Assignee: Paracor Surgical, Inc.
    Inventors: Lilip Lau, Bill Hartigan
  • Expandable cardiac harness for treating congestive heart failure
    Patent number: 6612978
    Abstract: A cardiac harness for treating congestive heart failure is disclosed. The harness applies elastic, compressive reinforcement on the left ventricle to reduce deleterious wall tension and to resist shape change of the ventricle during the mechanical cardiac cycle. Rather than imposing a dimension beyond which the heart cannot expand, the harness provides no hard limit over the range of diastolic expansion of the ventricle. Instead, the harness follows the contour of the heart throughout diastole and continuously exerts gentle resistance to stretch. Also disclosed is a method of delivering the cardiac harness to the heart minimally invasively.
    Type: Grant
    Filed: September 10, 2001
    Date of Patent: September 2, 2003
    Assignee: Paracor Surgical, Inc.
    Inventors: Lilip Lau, Bill Hartigan
  • Procedures for introducing stents and stent-grafts
    Patent number: 6613072
    Abstract: This invention is a medical device and a method of using it. The device is a foldable stent or stent-graft which may be percutaneously delivered with (or on) a catheter, typically an endovascular catheter, to a body cavity or lumen and then expanded. The stent's configuration allows it to be folded or otherwise compressed to a very small diameter prior to deployment without changing the length of the stent. The deployment procedures may involve the use of an outer sleeve to maintain the stent or stent-graft at a reduced diameter or may involve one or more external or internal “slip-lines” or “tether wires” to hold and then to release the device. A removal slip line for holding the stent in the deployable configuration can be woven along longitudinal fold line using the sack knot.
    Type: Grant
    Filed: July 18, 1997
    Date of Patent: September 2, 2003
    Assignee: Gore Enterprise Holdings, Inc.
    Inventors: Lilip Lau, Charles T. Maroney, William M. Hartigan, Sharon Lam