Programmable voltage-waveform-generating battery power source for implantable medical use
First Claim
1. A programmable voltage-waveform-generating battery power source for implantable medical devices that provides the capability to deliver electrical therapy with varied and programmable voltage waveforms, comprising:
- a high-energy battery system;
a waveform control system;
a power amplifier;
said high-energy battery system supplying prime power to said power amplifier;
said power amplifier having an output connected to physiologic electrodes for the purpose of delivering electrical therapy; and
said waveform control system supplying a waveform voltage control input to said power amplifier.
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Accused Products
Abstract
A programmable voltage-waveform-generating battery power source for implantable medical use enables an implantable device to deliver therapeutic electrical energy with flexible control of voltage amplitude, waveform and timing. The power source includes a high-energy battery system, a waveform control system and a power amplifier that collectively provide the capability to deliver electrical therapy with varied and programmable voltage waveforms, repetition rates and timing intervals that are unachievable with high voltage energy storage capacitors as presently practiced. The high-energy battery system supplies prime power to the power amplifier, the output of which is connected to physiologic electrodes for the purpose of delivering electrical therapy. The waveform control system is programmable and supplies waveform voltage control inputs to the power amplifier.
50 Citations
20 Claims
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1. A programmable voltage-waveform-generating battery power source for implantable medical devices that provides the capability to deliver electrical therapy with varied and programmable voltage waveforms, comprising:
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a high-energy battery system;
a waveform control system;
a power amplifier;
said high-energy battery system supplying prime power to said power amplifier;
said power amplifier having an output connected to physiologic electrodes for the purpose of delivering electrical therapy; and
said waveform control system supplying a waveform voltage control input to said power amplifier. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An implantable device comprising:
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a high-energy battery system;
a waveform control system;
a power amplifier;
physiologic electrodes;
said high-energy battery system supplying prime power to said power amplifier;
said power amplifier having an output connected to said physiologic electrodes for the purpose of delivering electrical therapy; and
said waveform control system supplying a waveform voltage control input to said power amplifier. - View Dependent Claims (16, 17, 18, 19)
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20. A programmable voltage-waveform-generating battery power source for implantable medical devices that provides the capability to deliver electrical therapy with varied and programmable voltage waveforms, comprising:
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a high-energy battery system;
a waveform control system;
a power amplifier;
said high-energy battery system supplying prime power to said power amplifier;
said power amplifier having an output connected to physiologic electrodes for the purpose of delivering electrical therapy;
said waveform control system supplying a waveform voltage control input to said power amplifier;
said high-energy battery system comprising one of a multiplicity of rechargeable battery cells electrically connected for charging in parallel and discharging in series, or a primary or secondary battery;
said waveform control system comprising a memory for storing information corresponding to a plurality of waveforms, a first input adapted to allow selection of a plurality of waveforms, a second input adapted to allow selection of a waveform amplitude, a third input adapted to allow selection of a waveform slope, and a fourth input adapted to allow selection of a waveform and a reverse image of said waveform;
said power amplifier comprising a class D switching mode amplifier having a pulse width/duty cycle control module, an oscillator adapted to drive said pulse width/duty cycle control module to convert said waveform control input into voltage pulses, a field effect transistor having a gate controlled by said voltage pulses, a source connected to said high-energy battery power system and a drain connected to a two-pole low-pass filter of said power amplifier, and said filter being adapted to integrate the energy of said voltage pulses over time to provide an amplified output voltage that is proportional to said waveform control input.
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Specification