Patents by Inventor Jan D. Wald

Jan D. Wald 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: 8306619
    Abstract: A system and method for selectively treating a ventricular tachycardia based on sensed atrial and ventricular intervals from the patient's heart. A detection window of the ten most recent atrial and ventricular intervals are analyzed for the occurrence of either tachycardia or fibrillation. When a majority of the sensed intervals are satisfied, the apparatus starts a duration time interval. Ventricular intervals and atrial intervals are compare, ventricular interval greater than the atrial interval by a bias factor the system delivers tachycardia therapy to the heart. Alternatively, the method withholds tachycardia therapy to the heart when the atrial rate is classified as atrial fibrillation and the ventricular response is unstable.
    Type: Grant
    Filed: September 27, 2011
    Date of Patent: November 6, 2012
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: David B. Krig, James O. Gilkerson, Robert D. Dreher, Jan D. Wald, William J. Linder, William L. Zimmer
  • Publication number: 20120016433
    Abstract: A system and method for selectively treating a ventricular tachycardia based on sensed atrial and ventricular intervals from the patient's heart. A detection window of the ten most recent atrial and ventricular intervals are analyzed for the occurrence of either tachycardia or fibrillation. When a majority of the sensed intervals are satisfied, the apparatus starts a duration time interval. Ventricular intervals and atrial intervals are compare, ventricular interval greater than the atrial interval by a bias factor the system delivers tachycardia therapy to the heart. Alternatively, the method withholds tachycardia therapy to the heart when the atrial rate is classified as atrial fibrillation and the ventricular response is unstable.
    Type: Application
    Filed: September 27, 2011
    Publication date: January 19, 2012
    Inventors: David B. Krig, James O. Gilkerson, Robert D. Dreher, Jan D. Wald, William J. Linder, William L. Zimmer
  • Patent number: 8046068
    Abstract: A system and method for selectively treating a ventricular tachycardia based on sensed atrial and ventricular intervals from the patient's heart. A detection window of the ten most recent atrial and ventricular intervals are analyzed for the occurrence of either tachycardia or fibrillation. When a majority of the sensed intervals are satisfied, the apparatus starts a duration time interval. Ventricular intervals and atrial intervals are compare, ventricular interval greater than the atrial interval by a bias factor the system delivers tachycardia therapy to the heart. Alternatively, the method withholds tachycardia therapy to the heart when the atrial rate is classified as atrial fibrillation and the ventricular response is unstable.
    Type: Grant
    Filed: April 20, 2009
    Date of Patent: October 25, 2011
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: David B. Krig, James O. Gilkerson, Robert D. Dreher, Jan D. Wald, William J. Linder, William L. Zimmer
  • Publication number: 20090234400
    Abstract: A system and method for selectively treating a ventricular tachycardia based on sensed atrial and ventricular intervals from the patient's heart. A detection window of the ten most recent atrial and ventricular intervals are analyzed for the occurrence of either tachycardia or fibrillation. When a majority of the sensed intervals are satisfied, the apparatus starts a duration time interval. Ventricular intervals and atrial intervals are compare, ventricular interval greater than the atrial interval by a bias factor the system delivers tachycardia therapy to the heart. Alternatively, the method withholds tachycardia therapy to the heart when the atrial rate is classified as atrial fibrillation and the ventricular response is unstable.
    Type: Application
    Filed: April 20, 2009
    Publication date: September 17, 2009
    Inventors: David B. Krig, James O. Gilkerson, Robert D. Dreher, Jan D. Wald, William J. Linder, William L. Zimmer
  • Patent number: 7522956
    Abstract: A system and method for selectively treating a ventricular tachycardia based on sensed atrial and ventricular intervals from the patient's heart. A detection window of the ten most recent atrial and ventricular intervals are analyzed for the occurrence of either tachycardia or fibrillation. When a majority of the sensed intervals are satisfied, the apparatus starts a duration time interval. Ventricular intervals and atrial intervals are compare, ventricular interval greater than the atrial interval by a bias factor the system delivers tachycardia therapy to the heart. Alternatively, the method withholds tachycardia therapy to the heart when the atrial rate is classified as atrial fibrillation and the ventricular response is unstable.
    Type: Grant
    Filed: March 7, 2005
    Date of Patent: April 21, 2009
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: David B. Krig, James O. Gilkerson, Robert D. Dreher, Jan D. Wald, William J. Linder, William L. Zimmer
  • Patent number: 7113824
    Abstract: A system and method for selectively treating a ventricular tachycardia based on sensed atrial and ventricular intervals from the patient's heart. A detection window of the ten most recent atrial and ventricular intervals are analyzed for the occurrence of either tachycardia or fibrillation. When a majority of the sensed intervals are satisfied, the apparatus starts a duration time interval. Ventricular intervals and atrial intervals are compare, ventricular interval greater than the atrial interval by a bias factor the system delivers tachycardia therapy to the heart. Alternatively, the method withholds tachycardia therapy to the heart when the atrial rate is classified as atrial fibrillation and the ventricular response is unstable.
    Type: Grant
    Filed: November 13, 2001
    Date of Patent: September 26, 2006
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: David B. Krig, James O. Gilkerson, Robert D. Dreher, Jan D. Wald, William J. Linder, William L. Zimmer
  • Publication number: 20020107552
    Abstract: A system and method for selectively treating a ventricular tachycardia based on sensed atrial and ventricular intervals from the patient's heart. A detection window of the ten most recent atrial and ventricular intervals are analyzed for the occurrence of either tachycardia or fibrillation. When a majority of the sensed intervals are satisfied, the apparatus starts a duration time interval. Ventricular intervals and atrial intervals are compare, ventricular interval greater than the atrial interval by a bias factor the system delivers tachycardia therapy to the heart. Alternatively, the method withholds tachycardia therapy to the heart when the atrial rate is classified as atrial fibrillation and the ventricular response is unstable.
    Type: Application
    Filed: November 13, 2001
    Publication date: August 8, 2002
    Applicant: Cardiac Pacemakers, Inc.
    Inventors: David B. Krig, James O. Gilkerson, Robert D. Dreher, Jan D. Wald, William J. Linder, William L. Zimmer
  • Patent number: 6317632
    Abstract: A system and method for selectively treating a ventricular tachycardia based on sensed atrial and ventricular intervals from the patient's heart. A detection window of the ten most recent atrial and ventricular intervals are analyzed for the occurrence of either tachycardia or fibrillation. When a majority of the sensed intervals are satisfied, the apparatus starts a duration time interval. Ventricular intervals and atrial intervals are compare, ventricular interval greater than the atrial interval by a bias factor the system delivers tachycardia therapy to the heart. Alternatively, the method withholds tachycardia therapy to the heart when the atrial rate is classified as atrial fibrillation and the ventricular response is unstable.
    Type: Grant
    Filed: October 11, 2000
    Date of Patent: November 13, 2001
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: David B. Krig, James O. Gilkerson, Robert D. Dreher, Jan D. Wald, William J. Linder, William L. Zimmer
  • Patent number: 6151524
    Abstract: A system and method for selectively treating a ventricular tachycardia based on sensed atrial and ventricular intervals from the patient's heart. A detection window of the ten most recent atrial and ventricular intervals are analyzed for the occurrence of either tachycardia or fibrillation. When a majority of the sensed intervals are satisfied, the apparatus starts a duration time interval. Ventricular intervals and atrial intervals are compare, ventricular interval greater than the atrial interval by a bias factor the system delivers tachycardia therapy to the heart. Alternatively, the method withholds tachycardia therapy to the heart when the atrial rate is classified as atrial fibrillation and the ventricular response is unstable.
    Type: Grant
    Filed: August 18, 1999
    Date of Patent: November 21, 2000
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: David B. Krig, James O. Gilkerson, Robert D. Dreher, Jan D. Wald, William J. Linder, William L. Zimmer
  • Patent number: 5978707
    Abstract: A system and method for selectively treating a ventricular tachycardia based on sensed atrial and ventricular intervals from the patient's heart. A detection window of the ten most recent atrial and ventricular intervals are analyzed for the occurrence of either tachycardia or fibrillation. When a majority of the sensed intervals are satisfied, the apparatus starts a duration time interval. Ventricular intervals and atrial intervals are compare, ventricular interval greater than the atrial interval by a bias factor the system delivers tachycardia therapy to the heart. Alternatively, the method withholds tachycardia therapy to the heart when the atrial rate is classified as atrial fibrillation and the ventricular response is unstable.
    Type: Grant
    Filed: October 8, 1997
    Date of Patent: November 2, 1999
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: David B. Krig, James O. Gilkerson, Robert D. Dreher, Jan D. Wald, William J. Linder, William L. Zimmer