Patents by Inventor Jai Shankar Raman

Jai Shankar Raman 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 SUPPORT DEVICE WITH DIFFERENTIAL COMPLIANCE
    Publication number: 20130184519
    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: September 24, 2012
    Publication date: July 18, 2013
    Applicant: Mardil, Inc.
    Inventors: Clifton A. Alferness, Jai Shankar Raman, John Melmouth Power
  • Cardiac support device with differential compliance
    Patent number: 8277372
    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: Grant
    Filed: March 8, 2010
    Date of Patent: October 2, 2012
    Assignee: Mardil, Inc.
    Inventors: Clifton A. Alferness, Jai Shankar Raman, John Melmouth Power
  • CARDIAC DISEASE TREATMENT AND DEVICE
    Publication number: 20110106193
    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, 2011
    Publication date: May 5, 2011
    Applicant: MARDIL, INC.
    Inventors: Clifton A. ALFERNESS, Jai Shankar RAMAN, John Melmouth POWER
  • CARDIAC SUPPORT DEVICE WITH DIFFERENTIAL COMPLIANCE
    Publication number: 20100160721
    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: March 8, 2010
    Publication date: June 24, 2010
    Applicant: Acorn Cardiovascular, Inc.
    Inventors: Clifton A. Alferness, Jai Shankar Raman, John Melmouth Power
  • CARDIAC DISEASE TREATMENT AND DEVICE
    Publication number: 20100076256
    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: December 8, 2009
    Publication date: March 25, 2010
    Applicant: ACORN CARDIOVASCULAR, INC.
    Inventors: Clifton A. ALFERNESS, Jai Shankar RAMAN, John Melmouth POWER
  • Cardiac support with metallic structure
    Patent number: 7651461
    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: January 10, 2006
    Date of Patent: January 26, 2010
    Assignee: Acorn Cardiovascular, Inc.
    Inventors: Clifton A. Alferness, Jai Shankar Raman, John Melmouth Power
  • Cardiac support device with differential expansion
    Patent number: 7578784
    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: August 25, 2009
    Assignee: Acorn Cardiovasculas, Inc.
    Inventors: Clifton A. Alferness, Jai Shankar Raman, John Melmouth Power
  • Cardiac support device with anti-fibrosis coating
    Patent number: 7575547
    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: June 12, 2006
    Date of Patent: August 18, 2009
    Assignee: Acorn Cardiovascular, Inc.
    Inventors: Clifton A. Alferness, Jai Shankar Raman, John Melmouth Power
  • Cardiac support disease with anti-fibrosis coating
    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
  • Metallic cardiac support device
    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
  • Cardiac support with controlled ventricular pressure
    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
  • Cardiac support device with anti-fibrosis lining
    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
  • Cardiac disease treatment and device
    Patent number: 6896652
    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: September 20, 2002
    Date of Patent: May 24, 2005
    Assignee: Acorn Cardiovascular, Inc.
    Inventors: Clifton A. Alferness, Jai Shankar Raman, John Melmouth Power
  • Cardiac disease treatment and device
    Publication number: 20040181121
    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: March 26, 2004
    Publication date: September 16, 2004
    Applicant: Acorn Cardiovascular, Inc.
    Inventors: Clifton A. Alferness, Jai Shankar Raman, John Melmouth Power
  • Cardiac disease treatment and device
    Publication number: 20040181125
    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: March 26, 2004
    Publication date: September 16, 2004
    Applicant: Acorn Cardiovascular, Inc.
    Inventors: Clifton A. Alferness, Jai Shankar Raman, John Melmouth Power
  • Cardiac disease treatment and device
    Publication number: 20040181123
    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: March 26, 2004
    Publication date: September 16, 2004
    Applicant: Acorn Cardiovascular, Inc.
    Inventors: Clifton A. Alferness, Jai Shankar Raman, John Melmouth Power
  • Cardiac disease treatment and device
    Publication number: 20040181122
    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: March 26, 2004
    Publication date: September 16, 2004
    Applicant: Acorn Cardiovascular, Inc.
    Inventors: Clifton A. Alferness, Jai Shankar Raman, John Melmouth Power
  • Cardiac disease treatment and device
    Publication number: 20040171907
    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: March 5, 2004
    Publication date: September 2, 2004
    Applicant: Acorn Cardiovascular, Inc.
    Inventors: Clifton A. Alferness, Jai Shankar Raman, John Melmouth Power
  • Cardiac disease treatment and device
    Publication number: 20040171908
    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: March 5, 2004
    Publication date: September 2, 2004
    Applicant: Acorn Cardiovascular, Inc.
    Inventors: Clifton A. Alferness, Jai Shankar Raman, John Melmouth Power
  • Cardiac disease treatment and device
    Patent number: 6537203
    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: May 4, 2000
    Date of Patent: March 25, 2003
    Assignee: Acorn Cardiovascular, Inc.
    Inventors: Clifton A. Alferness, Jai Shankar Raman, John Melmouth Power