ACOUSTICALLY-POWERED WIRELESS DEFIBRILLATOR
First Claim
1. A method for terminating undesirable cardiac arrhythmias including ventricular fibrillation, said method comprising:
- generating acoustic energy at a first implantation site; and
receiving said acoustic energy at a second implantation site;
wherein said acoustic energy is converted to electrical energy and stored at a level to produce appropriate amplitude and waveform sufficient to treat the cardiac arrhythmia.
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Accused Products
Abstract
An acoustic transmitter produces a pulsed ultrasound waveform which is transmitted through body tissues to an implanted receiver-stimulator device. The waveform has an acoustic amplitude, pulse width, and pulse repetition period, which corresponds to a pacing pulse electrical amplitude, pacing pulse width, and pacing cycle length, respectively. The receiver-stimulator device intercepts at least a portion of the transmitted acoustic energy and coverts that acoustic energy into electrical energy using piezoelectric or other devices. This electrical energy is applied to circuitry, which produces a desired stimulating pulse waveform, which is then applied to tissue-contacting electrodes.
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Citations
31 Claims
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1. A method for terminating undesirable cardiac arrhythmias including ventricular fibrillation, said method comprising:
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generating acoustic energy at a first implantation site; and receiving said acoustic energy at a second implantation site; wherein said acoustic energy is converted to electrical energy and stored at a level to produce appropriate amplitude and waveform sufficient to treat the cardiac arrhythmia.
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2. A system for terminating undesirable cardiac arrhythmias including ventricular fibrillation, said system comprising:
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an implantable acoustic controller-transmitter; and an implantable acoustic receiver-defibrillator having electrode assemblies adapted to deliver defibrillation energy to the cardiac muscle tissue; wherein the controller-transmitter and receiver-defibrillator are adapted to transmit and receive acoustic energy which provides both defibrillation energy and signal information to the receiver-defibrillator sufficient to provide defibrillation or termination of other cardiac arrhythmias. - View Dependent Claims (3, 4, 5, 6, 7)
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8. A method for terminating undesirable cardiac arrhythmias including ventricular fibrillation and stimulating cardiac muscle, said method comprising:
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generating acoustic energy at a first implantation site; and receiving said acoustic energy at a second implantation site; wherein said acoustic energy is converted to electrical energy suitable for either cardiac defibrillation or cardiac muscle stimulation based on both energy and signal information encoded in the generated acoustic energy. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A system for terminating undesirable cardiac arrhythmias including ventricular fibrillation and for stimulating cardiac muscle, said system comprising:
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an implantable acoustic controller-transmitter; and an implantable acoustic receiver-defibrillator-stimulator having electrode assemblies adapted to deliver defibrillation energy or stimulation energy to the cardiac muscle tissue; wherein the controller-transmitter and receiver-defibrillator-stimulator are adapted to transmit and receive acoustic energy which provides energy to the receiver-defibrillator-stimulator sufficient for accomplishing one of either stimulation or defibrillation, and which also provides signal information sufficient to perform one of either stimulation or defibrillation. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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Specification