Patents by Inventor Robert D. Dreher
Robert D. Dreher 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).
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Patent number: 8306619Abstract: 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: GrantFiled: September 27, 2011Date of Patent: November 6, 2012Assignee: Cardiac Pacemakers, Inc.Inventors: David B. Krig, James O. Gilkerson, Robert D. Dreher, Jan D. Wald, William J. Linder, William L. Zimmer
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Publication number: 20120016433Abstract: 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: ApplicationFiled: September 27, 2011Publication date: January 19, 2012Inventors: David B. Krig, James O. Gilkerson, Robert D. Dreher, Jan D. Wald, William J. Linder, William L. Zimmer
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Patent number: 8046068Abstract: 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: GrantFiled: April 20, 2009Date of Patent: October 25, 2011Assignee: Cardiac Pacemakers, Inc.Inventors: David B. Krig, James O. Gilkerson, Robert D. Dreher, Jan D. Wald, William J. Linder, William L. Zimmer
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Publication number: 20090234400Abstract: 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: ApplicationFiled: April 20, 2009Publication date: September 17, 2009Inventors: David B. Krig, James O. Gilkerson, Robert D. Dreher, Jan D. Wald, William J. Linder, William L. Zimmer
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Patent number: 7522956Abstract: 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: GrantFiled: March 7, 2005Date of Patent: April 21, 2009Assignee: Cardiac Pacemakers, Inc.Inventors: David B. Krig, James O. Gilkerson, Robert D. Dreher, Jan D. Wald, William J. Linder, William L. Zimmer
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Patent number: 7113824Abstract: 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: GrantFiled: November 13, 2001Date of Patent: September 26, 2006Assignee: Cardiac Pacemakers, Inc.Inventors: David B. Krig, James O. Gilkerson, Robert D. Dreher, Jan D. Wald, William J. Linder, William L. Zimmer
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Publication number: 20020107552Abstract: 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: ApplicationFiled: November 13, 2001Publication date: August 8, 2002Applicant: Cardiac Pacemakers, Inc.Inventors: David B. Krig, James O. Gilkerson, Robert D. Dreher, Jan D. Wald, William J. Linder, William L. Zimmer
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Patent number: 6317632Abstract: 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: GrantFiled: October 11, 2000Date of Patent: November 13, 2001Assignee: Cardiac Pacemakers, Inc.Inventors: David B. Krig, James O. Gilkerson, Robert D. Dreher, Jan D. Wald, William J. Linder, William L. Zimmer
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Patent number: 6151524Abstract: 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: GrantFiled: August 18, 1999Date of Patent: November 21, 2000Assignee: Cardiac Pacemakers, Inc.Inventors: David B. Krig, James O. Gilkerson, Robert D. Dreher, Jan D. Wald, William J. Linder, William L. Zimmer
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Patent number: 5978707Abstract: 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: GrantFiled: October 8, 1997Date of Patent: November 2, 1999Assignee: Cardiac Pacemakers, Inc.Inventors: David B. Krig, James O. Gilkerson, Robert D. Dreher, Jan D. Wald, William J. Linder, William L. Zimmer
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Patent number: 4562841Abstract: A programmable cardiac pacemaker that is selectively programmable via a radio frequency communications link into one of a plurality of a single and dual chamber pacing modes. Depending upon the mode selected, an associated plurality of pacing parameters may be programmed, each within a predetermined range of possible magnitudes.The pacemaker includes a rate smoothing function for preventing the rate interval from changing by more than a predetermined percentage on a cycle-to-cycle basis; and a graceful degradation function for causing the ventricular pacing rate to decay when the atrial rate exceeds a programmed upper rate limit for a predetermined length of time. A graceful degration onset time and rate of decay are also programmable. Additionally, the pacemaker contains a set of pre-programmed alternative pacing parameters for at least one mode and which can be independently reverted to.The pacemaker control circuitry is organized about a central bus into an I/O controller and a pacing controller.Type: GrantFiled: August 5, 1982Date of Patent: January 7, 1986Assignee: Cardiac Pacemakers, Inc.Inventors: Brian P. Brockway, Robert D. Dreher, Daniel E. Huntwork, Brock S. Lindstedt, Douglas C. Morrison, Perry A. Mills
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Patent number: 4233991Abstract: The urethral catheter puller described in this application provides a convenient apparatus for performing urological diagnostic procedures such as urethral pressure profilometry and urethral electromyographic profilometry. In practice, a urethral catheter is mounted on catheter supports attached to the boom of the puller. The boom is equipped with positioning apparatus so that the catheter supports may be positioned in close proximity to the patient. The puller allows the catheter to be pulled in a horizontal or vertical direction, thus allowing the patient to stand or lie in a bed during the diagnostic procedure. The catheter supports are equipped with suitable structures to control the motion of the catheter as it is withdrawn from the urethra of the patient. A variable speed drive is provided to control the rate at which the catheter is withdrawn.Type: GrantFiled: December 18, 1978Date of Patent: November 18, 1980Assignee: American Medical Systems, Inc.Inventors: William E. Bradley, William M. Klatt, Charles C. Kuyava, Robert D. Dreher