Overlapping pulse cardioversion or defibrillation
First Claim
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1. Apparatus for cardiac cardioversion or defibrillation, comprising:
- a first pair of cardioversion or defibrillation electrodes;
a second pair of cardioversion or defibrillation electrodes;
a capacitor mean for storing charge comprising one or more capacitors and having positive and negative output terminals;
means for sequentially coupling said positive and negative output terminals of said capacitor means to said first electrode pair for a first time interval to deliver a first cardioversion or defibrillation pulse and to said second electrode pair for a second time interval to deliver a second cardioversion or defibrillation pulse, said first and second time intervals overlapping one another such that during an overlap time interval of at least about one millisecond both said first and second pulses are being delivered and such that during a non-overlap interval of at least about one millisecond only one of said first and second pulses is being delivered.
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Abstract
A method and apparatus for cardioversion and defibrillation. The apparatus is provided with two pairs of cardioversion or defibrillation electrodes, and delivers pulses sequentially between said first and second pairs of electrodes, such that the first pulse overlaps the second pulse for a time interval of at least about one millisecond. During the overlap time of the first and second pulses, a defibrillation pulse vector intermediate that defined by the two electrode pairs individually is provided.
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Citations
12 Claims
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1. Apparatus for cardiac cardioversion or defibrillation, comprising:
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a first pair of cardioversion or defibrillation electrodes; a second pair of cardioversion or defibrillation electrodes; a capacitor mean for storing charge comprising one or more capacitors and having positive and negative output terminals; means for sequentially coupling said positive and negative output terminals of said capacitor means to said first electrode pair for a first time interval to deliver a first cardioversion or defibrillation pulse and to said second electrode pair for a second time interval to deliver a second cardioversion or defibrillation pulse, said first and second time intervals overlapping one another such that during an overlap time interval of at least about one millisecond both said first and second pulses are being delivered and such that during a non-overlap interval of at least about one millisecond only one of said first and second pulses is being delivered. - View Dependent Claims (2, 3, 4, 5, 6)
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7. Method for cardiac cardioversion or defibrillation, comprising:
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applying a first pair of cardioversion or defibrillation electrodes to a patient'"'"'s body; applying a second pair of cardioversion or defibrillation electrodes to said patient'"'"'s body; coupling a capacitor means comprising one or more capacitors and having positive and negative output terminals to said first and second electrode pairs; sequentially coupling said positive and negative output terminals of said capacitor means said first electrode pair for a first time interval to deliver a first cardioversion or defibrillation pulse and to said second electrode pair for a second time interval to deliver a second cardioversion or defibrillation pulse, said first and second time intervals overlapping one another such that during an overlap time interval of at least about one millisecond both said first and second pulses are being delivered and such that during a nonoverlap interval of at least about one millisecond only one of said first and second pulses is being delivered. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification