Method and apparatus for reliably producing pacing pulse trains
First Claim
1. A cardiac stimulation apparatus for a patient whose heart needs cardiac therapy comprising:
- a capacitor charging circuit;
a first capacitor electrically connected to said capacitor charging circuit for providing a pacing pulse;
a second capacitor electrically connected to said capacitor charging circuit for providing a pacing pulse; and
a control circuit for enabling at least one of said capacitors to be charged and discharged, said control circuit connected to a sequencer for enabling said first and second capacitors to be charged and discharged in alternate cycles to produce a pulse train formed by pulses from said first and second capacitors.
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Accused Products
Abstract
A method and apparatus for reliably producing a pulse train includes a control system which automatically selects a secondary pulse generator circuit when high frequency pulses are needed or whenever the use of alternating pulse generators would be desirable. This secondary pulse generator may be provided for other functions or it may be dedicated to providing alternate pulses, for example, to increase the frequency of the primary pulse generator without the loss of amplitude. This system may be useful for many purposes including implementing a noninvasive programmed stimulation operation or for providing antitachycardia arrhythmia therapy.
55 Citations
20 Claims
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1. A cardiac stimulation apparatus for a patient whose heart needs cardiac therapy comprising:
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a capacitor charging circuit;
a first capacitor electrically connected to said capacitor charging circuit for providing a pacing pulse;a second capacitor electrically connected to said capacitor charging circuit for providing a pacing pulse; and a control circuit for enabling at least one of said capacitors to be charged and discharged, said control circuit connected to a sequencer for enabling said first and second capacitors to be charged and discharged in alternate cycles to produce a pulse train formed by pulses from said first and second capacitors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for cardiac stimulation comprising the steps of:
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producing a pulse train for cardiac stimulation, at least part of said pulse train comprising pulses powered from a first tank capacitor alternating with pulses powered from a second tank capacitor; applying said pulse train to the heart of a patient; and recharging one of said tank capacitors while the other of said tank capacitors is being discharged. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification