Atrial defibrillator and method providing dual reset of an interval timer
First Claim
1. An implantable atrial defibrillator for applying cardioverting electrical energy to the atria of a human heart, said atrial defibrillator comprising:
- first detecting means for sensing a depolarization activation wave at a first location of the heart and generating a first initiation signal;
second detecting means for sensing said depolarization activation wave at a second location of the heart and generating a second initiation signal; and
timing means for timing the time between immediately successive depolarization activation waves of the heart, said timing means being responsive to one of said first and said second initiation signals for commencing said timing; and
cardioverting means for applying said cardioverting electrical energy to the atria of the heart when the atria of the heart are in need of cardioversion and when said timing means times a time greater than a predetermined time interval.
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Accused Products
Abstract
An implantable atrial defibrillator for applying cardioverting electrical energy to the atria of a human heart. The atrial defibrillator includes a first detector for sensing a depolarization activation wave at a first pair of locations of the heart and generating a first initiation signal and a second detector for sensing the depolarization activation wave between a second pair of locations of the heart and generating a second initiation signal. The atrial defibrillator also includes a timing circuit for timing the time between immediately successive depolarization activation waves of the heart in response to one of the first and the second initiation signals for commencing the timing. The atrial defibrillator also includes a cardioverting circuit for applying the cardioverting electrical energy to the atria of the heart when the atria of the heart are in need of cardioversion and when the timer times a time greater than a predetermined time interval.
55 Citations
16 Claims
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1. An implantable atrial defibrillator for applying cardioverting electrical energy to the atria of a human heart, said atrial defibrillator comprising:
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first detecting means for sensing a depolarization activation wave at a first location of the heart and generating a first initiation signal; second detecting means for sensing said depolarization activation wave at a second location of the heart and generating a second initiation signal; and timing means for timing the time between immediately successive depolarization activation waves of the heart, said timing means being responsive to one of said first and said second initiation signals for commencing said timing; and cardioverting means for applying said cardioverting electrical energy to the atria of the heart when the atria of the heart are in need of cardioversion and when said timing means times a time greater than a predetermined time interval. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of applying cardioverting electrical energy to the atria of a human heart in need of cardioversion, the method including the steps of:
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detecting a depolarization activation wave of the heart at a first location of the heart; generating a first initiation signal responsive to detecting said depolarization activation wave at said first location of the heart; detecting said depolarization activation wave of the heart at a second location of the heart; generating a second initiation signal responsive to detecting said depolarization activation wave at said second location of the heart; timing the time between successive depolarization activation waves of the heart including the step of commencing said timing in response to one of said first and said second initiation signals; and applying said cardioverting electrical energy to the atria of the heart when the atria of the heart are in need of cardioversion and when the time between successive depolarization activation waves is greater than a predetermined time interval. - View Dependent Claims (13, 14, 15, 16)
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Specification