Patents by Inventor Clifton Alferness

Clifton Alferness 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: 7179282
    Abstract: An intravascular support device includes a support or reshaper wire, a proximal anchor and a distal anchor. The support wire engages a vessel wall to change the shape of tissue adjacent the vessel in which the intravascular support is placed. The anchors and support wire are designed such that the vessel in which the support is placed remains open and can be accessed by other devices if necessary. The device provides a minimal metal surface area to blood flowing within the vessel to limit the creation of thrombosis. The anchors can be locked in place to secure the support within the vessel.
    Type: Grant
    Filed: May 2, 2003
    Date of Patent: February 20, 2007
    Assignee: Cardiac Dimensions, Inc.
    Inventors: Clifton A. Alferness, John M. Adams, Mark L. Mathis, David G. Reuter, Cruz Beeson, Leonard Kowalsky
  • Patent number: 7166071
    Abstract: The present disclosure is directed to a cardiac reinforcement device (CRD) and method for the treatment of cardiomyopathy. The CRD provides for reinforcement of the walls of the heart by constraining cardiac expansion, beyond a predetermined limit, during diastolic expansion of the heart. A CRD of the invention can be applied to the epicardium of the heart to locally constrain expansion of the cardiac wall or to circumferentially constrain the cardiac wall during cardiac expansion.
    Type: Grant
    Filed: September 23, 2003
    Date of Patent: January 23, 2007
    Assignee: Acorn Cardiovascular, Inc.
    Inventor: Clifton A. Alferness
  • Patent number: 7163507
    Abstract: The present disclosure is directed to a cardiac reinforcement device (CRD) and method for the treatment of cardiomyopathy. The CRD provides for reinforcement of the walls of the heart by constraining cardiac expansion, beyond a predetermined limit, during diastolic expansion of the heart. A CRD of the invention can be applied to the epicardium of the heart to locally constrain expansion of the cardiac wall or to circumferentially constrain the cardiac wall during cardiac expansion.
    Type: Grant
    Filed: September 23, 2003
    Date of Patent: January 16, 2007
    Assignee: Acorn Cardiovascular, Inc.
    Inventor: Clifton A. Alferness
  • Publication number: 20070004962
    Abstract: A cardiac support device comprising a jacket of flexible and biocompatible material having a first axis for alignment generally parallel to a longitudinal axis of a patient's heart and a second axis that is transverse to the first axis. The material exhibits an amount of expansion in response to a force applied to the material along the first axis that is different than an amount of expansion in response to the force applied to the material along the second axis.
    Type: Application
    Filed: August 31, 2006
    Publication date: January 4, 2007
    Applicant: Acorn Cardiovascular, Inc.
    Inventors: Clifton Alferness, Jai Raman, John Power
  • Patent number: 7153258
    Abstract: A jacket of biological compatible material has an internal volume dimensioned for an apex of the heart to be inserted into the volume and for the jacket to be slipped over the heart. The jacket has a longitudinal dimension between upper and lower ends sufficient for the jacket to surround a lower portion of the heart with the jacket surrounding a valvular annulus of the heart and further surrounding the lower portion to cover at least the ventricular lower extremities of the heart. The jacket is adapted to be secured to the heart with the jacket surrounding at least the valvular annulus and the ventricular lower extremities. The jacket is adjustable on the heart to snugly conform to an external geometry of the heart and assume a maximum adjusted volume for the jacket to constrain circumferential expansion of the heart beyond the maximum adjusted volume during diastole and to permit unimpeded contraction of the heart during systole.
    Type: Grant
    Filed: March 26, 2004
    Date of Patent: December 26, 2006
    Assignee: Acorn Cardiovascular, Inc.
    Inventors: Clifton A. Alferness, Jai Shankar Raman, John Melmouth Power
  • Publication number: 20060235265
    Abstract: A jacket of biological compatible material has an internal volume dimensioned for an apex of the heart to be inserted into the volume and for the jacket to be slipped over the heart. The jacket has a longitudinal dimension between upper and lower ends sufficient for the jacket to surround a lower portion of the heart with the jacket surrounding a valvular annulus of the heart and further surrounding the lower portion to cover at least the ventricular lower extremities of the heart. The jacket is adapted to be secured to the heart with the jacket surrounding at least the valvular annulus and the ventricular lower extremities. The jacket is adjustable on the heart to snugly conform to an external geometry of the heart and assume a maximum adjusted volume for the jacket to constrain circumferential expansion of the heart beyond the maximum adjusted volume during diastole and to permit unimpeded contraction of the heart during systole.
    Type: Application
    Filed: June 12, 2006
    Publication date: October 19, 2006
    Applicant: Acorn Cardiovascular, Inc.
    Inventors: Clifton Alferness, Jai Raman, John Power
  • Publication number: 20060190018
    Abstract: A transoral gastroesophageal flap valve restoration device includes a tissue gripper which is guidable by one of a first and second member. The first and second members form a tissue shaper carried on a longitudinal member that shapes stomach tissue into the flap of a restored gastroesophageal flap valve.
    Type: Application
    Filed: February 18, 2005
    Publication date: August 24, 2006
    Inventors: Steve Baker, Brett Carter, Clifton Alferness
  • Publication number: 20060184088
    Abstract: The present invention generally relates to methods and apparatus for use in endovascular and intraoperative procedures providing arterial blood-flow for perfusion of ischemic myocardium. Aspects of the present invention provide a conduit between a non-coronary sinus of the aorta and a coronary vein. The conduit traverses a portion of the right atrium and the coronary sinus, and is located entirely within the heart and aorta. Arterial blood flows from the aorta through the conduit and into the coronary venous circulation towards the ischemic region of the heart. All procedures described herein may be performed endovascularly, and further may be performed while the patient's heart is beating.
    Type: Application
    Filed: April 6, 2006
    Publication date: August 17, 2006
    Inventors: Richard Van Bibber, Scott Wolf, Clifton Alferness, John Adams
  • Publication number: 20060148742
    Abstract: A method for delivering a polynucleotide to cardiac tissue, including substantially isolating the coronary venous circulation from systemic circulation, and introducing a polynucleotide into the isolated coronary venous circulation to effect localized transfection of cardiac tissue. The polynucleotide advantageously produces a therapeutic effect, such as increasing or decreasing the expression level of a protein in the cardiac tissue.
    Type: Application
    Filed: August 25, 2005
    Publication date: July 6, 2006
    Inventors: David Kaye, John Power, Clifton Alferness, Adam Bilney, Kenneth Chien, Athanasios Preovolos
  • Publication number: 20060142854
    Abstract: An intravascular support device includes a support or reshaper wire, a proximal anchor and a distal anchor. The support wire engages a vessel wall to change the shape of tissue adjacent the vessel in which the intravascular support is placed. The anchors and support wire are designed such that the vessel in which the support is placed remains open and can be accessed by other devices if necessary. The device provides a minimal metal surface area to blood flowing within the vessel to limit the creation of thrombosis. The anchors can be locked in place to secure the support within the vessel.
    Type: Application
    Filed: May 2, 2003
    Publication date: June 29, 2006
    Inventors: Clifton Alferness, John Adams, Mark Mathis, David Reuter, Cruz Beeson, Leonard Kowalsky
  • Publication number: 20060111607
    Abstract: A jacket of biological compatible material has an internal volume dimensioned for an apex of the heart to be inserted into the volume and for the jacket to be slipped over the heart. The jacket has a longitudinal dimension between upper and lower ends sufficient for the jacket to surround a lower portion of the heart with the jacket surrounding a valvular annulus of the heart and further surrounding the lower portion to cover at least the ventricular lower extremities of the heart. The jacket is adapted to be secured to the heart with the jacket surrounding at least the valvular annulus and the ventricular lower extremities. The jacket is adjustable on the heart to snugly conform to an external geometry of the heart and assume a maximum adjusted volume for the jacket to constrain circumferential expansion of the heart beyond the maximum adjusted volume during diastole and to permit unimpeded contraction of the heart during systole.
    Type: Application
    Filed: January 10, 2006
    Publication date: May 25, 2006
    Applicant: Acorn Cardiovascular, Inc.
    Inventors: Clifton Alferness, Jai Raman, John Power
  • Patent number: 7025719
    Abstract: A jacket of biological compatible material has an internal volume dimensioned for an apex of the heart to be inserted into the volume and for the jacket to be slipped over the heart. The jacket has a longitudinal dimension between upper and lower ends sufficient for the jacket to surround a lower portion of the heart with the jacket surrounding a valvular annulus of the heart and further surrounding the lower portion to cover at least the ventricular lower extremities of the heart. The jacket is adapted to be secured to the heart with the jacket surrounding at least the valvular annulus and the ventricular lower extremities. The jacket is adjustable on the heart to snugly conform to an external geometry of the heart and assume a maximum adjusted volume for the jacket to constrain circumferential expansion of the heart beyond the maximum adjusted volume during diastole and to permit unimpeded contraction of the heart during systole.
    Type: Grant
    Filed: March 26, 2004
    Date of Patent: April 11, 2006
    Assignee: Acorn Cardiovascular, Inc.
    Inventors: Clifton A. Alferness, Jai Shankar Raman, John Melmouth Power
  • Patent number: 7022064
    Abstract: A jacket of biological compatible material has an internal volume dimensioned for an apex of the heart to be inserted into the volume and for the jacket to be slipped over the heart. The jacket has a longitudinal dimension between upper and lower ends sufficient for the jacket to surround a lower portion of the heart with the jacket surrounding a valvular annulus of the heart and further surrounding the lower portion to cover at least the ventricular lower extremities of the heart. The jacket is adapted to be secured to the heart with the jacket surrounding at least the valvular annulus and the ventricular lower extremities. The jacket is adjustable on the heart to snugly conform to an external geometry of the heart and assume a maximum adjusted volume for the jacket to constrain circumferential expansion of the heart beyond the maximum adjusted volume during diastole and to permit unimpeded contraction of the heart during systole.
    Type: Grant
    Filed: March 5, 2004
    Date of Patent: April 4, 2006
    Assignee: Acorn Cardiovascular, Inc.
    Inventors: Clifton A. Alferness, Jai Shankar Raman, John Melmouth Power
  • Patent number: 6997865
    Abstract: A jacket of biological compatible material has an internal volume dimensioned for an apex of the heart to be inserted into the volume and for the jacket to be slipped over the heart. The jacket has a longitudinal dimension between upper and lower ends sufficient for the jacket to surround a lower portion of the heart with the jacket surrounding a valvular annulus of the heart and further surrounding the lower portion to cover at least the ventricular lower extremities of the heart. The jacket is adapted to be secured to the heart with the jacket surrounding at least the valvular annulus and the ventricular lower extremities. The jacket is adjustable on the heart to snugly conform to an external geometry of the heart and assume a maximum adjusted volume for the jacket to constrain circumferential expansion of the heart beyond the maximum adjusted volume during diastole and to permit unimpeded contraction of the heart during systole.
    Type: Grant
    Filed: March 5, 2004
    Date of Patent: February 14, 2006
    Assignee: Acorn Cardiovascular, Inc.
    Inventors: Clifton A. Alferness, Jai Shankar Raman, John Melmouth Power
  • Publication number: 20060009792
    Abstract: A tissue fastener assembly delivers a fastener for deployment. The assembly includes a fastener including a first member, a second member, the first and second members having first and second ends, and a flexible connecting member fixed to each of the first and second members intermediate the first and second ends and extending between the first and second members. The first member has a longitudinal axis and a through channel along the axis. The assembly further includes a deployment wire slidingly received within the through channel of the first member that pierces into the tissue and guides the first member through the tissue, a guide structure defining a lumen that receives the fastener and deployment wire and guides the deployment wire and fastener to the tissue, and a fastener configuration structure that orientates the second member in a predetermined position relative to the first member within the lumen for dependable deployment.
    Type: Application
    Filed: June 29, 2005
    Publication date: January 12, 2006
    Inventors: Steve Baker, Brett Carter, Stefan Kraemer, Clifton Alferness, John Adams, Raymond Wolniewicz
  • Publication number: 20050272969
    Abstract: An intravascular support device includes a support or reshaper wire, a proximal anchor and a distal anchor. The support wire engages a vessel wall to change the shape of tissue adjacent the vessel in which the intravascular support is placed. The anchors and support wire are designed such that the vessel in which the support is placed remains open and can be accessed by other devices if necessary. The device provides a minimal metal surface area to blood flowing within the vessel to limit the creation of thrombosis. The anchors can be locked in place to secure the support within the vessel.
    Type: Application
    Filed: August 4, 2005
    Publication date: December 8, 2005
    Inventors: Clifton Alferness, John Adams, Mark Mathis, David Reuter, Cruz Beeson, Leonard Kowalsky
  • Publication number: 20050228217
    Abstract: A jacket of biological compatible material has an internal volume dimensioned for an apex of the heart to be inserted into the volume and for the jacket to be slipped over the heart. The jacket has a longitudinal dimension between upper and lower ends sufficient for the jacket to surround a lower portion of the heart with the jacket surrounding a valvular annulus of the heart and further surrounding the lower portion to cover at least the ventricular lower extremities of the heart. The jacket is adapted to be secured to the heart with the jacket surrounding at least the valvular annulus and the ventricular lower extremities. The jacket is adjustable on the heart to snugly conform to an external geometry of the heart and assume a maximum adjusted volume for the jacket to constrain circumferential expansion of the heart beyond the maximum adjusted volume during diastole and to permit unimpeded contraction of the heart during systole.
    Type: Application
    Filed: June 3, 2005
    Publication date: October 13, 2005
    Applicant: Acorn Cardiovascular, Inc.
    Inventors: Clifton Alferness, Donald Rohrbaugh, J. Shapland, Michael Girard, Donald Palme, James Cox
  • Publication number: 20050187425
    Abstract: A pump assists left ventricular function of a heart. The pump is configured for implant in the body and has an input connectable to the left atrium and an output connectable to the aorta for pumping blood from the left atrium to the aorta. A power source for powering operation of the pump is connectable to the pump. The pump may be configured for implant within the heart, such as, for example, in the atrium, the super vena cava, or partly within each of the right atrium and the superior vena cava.
    Type: Application
    Filed: January 12, 2005
    Publication date: August 25, 2005
    Inventors: Clifton Alferness, John Adams
  • Publication number: 20050187565
    Abstract: Tissue fasteners carried on a tissue piercing deployment wire fasten tissue layers of a mammalian body together. The fasteners include a first member, a second member, and a connecting member extending between the first and second members. The first and second members are substantially parallel to each other. The fasteners may be deployed in limited spaces and in various applications including the restoration of a gastroesophageal flap valve.
    Type: Application
    Filed: February 20, 2004
    Publication date: August 25, 2005
    Inventors: Steve Baker, Brett Carter, Stefan Kraemer, Clifton Alferness, John Adams
  • Publication number: 20050149182
    Abstract: A device, system and method affects mitral valve annulus geometry of a heart. The device includes a first anchor configured to be positioned within and fixed to the coronary sinus of the heart adjacent the mitral valve annulus within the heart. A cable is fixed to the first anchor and extends proximately therefrom and slidingly through a second anchor which is positioned and fixed in the heart proximal to the first anchor. A lock locks the cable to the second anchor when tension is applied to the cable for affecting the mitral valve annulus geometry.
    Type: Application
    Filed: February 28, 2005
    Publication date: July 7, 2005
    Inventors: Clifton Alferness, John Adams, Mark Mathis, David Reuter