Patents by Inventor Steven S. Khan

Steven S. Khan 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).

  • Method and apparatus for detecting prospenity for ventricular fibrillation using action potential curves
    Patent number: 6094593
    Abstract: A method for detecting a heart disorder comprises examination of a phase-plane plot (PPP) of a patient electrocardiogram (EKG). The PPP's degree of deterministic chaos may be measured by a processor. Analysis of the PPP may indicate a propensity for fibrillation that is, indicate both the risk of fibrillation and its actual onset (cases where risk is 100 percent). A second method for detecting a heart disorder comprises examination of a frequency-domain transform (such as an FFT) of a patient EKG. An automatic defibrillating device may comprise means for delivering a variable shock, the size of which is determined at least in part by the FFT's peak energy. A method for detecting drug toxicity comprises examination of a parameter time constant for an action-potential duration (APD) restitution curve which is constructed for the patient.
    Type: Grant
    Filed: October 9, 1997
    Date of Patent: July 25, 2000
    Assignee: Cedars-Sinai Medical Center
    Inventors: Hrayr S. Karagueuzian, George A. Diamond, Steven S. Khan, Timothy A. Denton, Steven Evans
  • Methods for detecting propensity for fibrillation
    Patent number: 5678561
    Abstract: A method for detecting a heart disorder comprises examination of a phase-plane plot (PPP) of a patient electrocardiogram (EKG). The PPP's degree of deterministic chaos may be measured by a processor. Analysis of the PPP may indicate a propensity for fibrillation, that is, indicate both the risk of fibrillation and its actual onset (cases where risk is 100 percent). A second method for detecting a heart disorder comprises examination of a frequency-domain transform (such as an FFT) of a patient EKG. An automatic defibrillating device may comprise means for delivering a variable shock, the size of which is determined at least in part by the FFT's peak energy. A method for detecting drug toxicity comprises examination of a parameter time constant for an action-potential duration (APD) restitution curve which is constructed for the patient.
    Type: Grant
    Filed: December 11, 1995
    Date of Patent: October 21, 1997
    Assignee: Cedars-Sinai Medical Center
    Inventors: Hrayr S. Karagueuzian, George A. Diamond, Steven S. Khan, Timothy A. Denton, Steven Evans
  • Defibrillator with shock energy based on EKG transform
    Patent number: 5643325
    Abstract: A method for detecting a heart disorder comprises examination of a phase-plane plot (PPP) of a patient electrocardiogram (EKG). The PPP's degree of deterministic chaos may be measured by a processor. Analysis of the PPP may indicate a propensity for fibrillation that is, indicate both the risk of fibrillation and its actual onset (cases where risk is 100 percent). A second method for detecting a heart disorder comprises examination of a frequency-domain transform (such as an FFT) of a patient EKG. An automatic defibrillating device may comprise means for delivering a variable shock, the size of which is determined at least in part by the FFT's peak energy. A method for detecting drug toxicity comprises examination of a parameter time constant for an action-potential duration (APD) restitution curve which is constructed for the patient.
    Type: Grant
    Filed: January 24, 1996
    Date of Patent: July 1, 1997
    Assignee: Cedars-Sinai Medical Center
    Inventors: Hrayr S. Karagueuzian, George A. Diamond, Steven S. Khan, Timothy A. Denton, Steven Evans
  • Methods for detecting propensity fibrillation
    Patent number: 5555889
    Abstract: A method for detecting a heart disorder comprises examination of a phase-plane plot (PPP) of a patient electrocardiogram (EKG). The PPP's degree of deterministic chaos may be measured by a processor. Analysis of the PPP may indicate a propensity for fibrillation, that is, indicate both the risk of fibrillation and its actual onset (cases where risk is 100 percent). A second method for detecting a heart disorder comprises examination of a frequency-domain transform (such as an FFT) of a patient EKG. An automatic defibrillating device may comprise means for delivering a variable shock, the size of which is determined at least in part by the FFT's peak energy. A method for detecting drug toxicity comprises examination of a parameter time constant for an action-potential duration (APD) restitution curve which is constructed for the patient.
    Type: Grant
    Filed: February 4, 1994
    Date of Patent: September 17, 1996
    Assignee: Cedars-Sinai Medical Center
    Inventors: Hrayr S. Karagueuzian, George A. Diamond, Steven S. Khan, Timothy A. Denton, Steven Evans