SYSTEM AND METHOD FOR CONTROLLING ELECTRICAL STIMULATION BASED ON LOWEST OPERABLE VOLTAGE MULTIPLIER FOR USE WITH IMPLANTABLE MEDICAL DEVICE
First Claim
1. A method for use with an implantable medical device equipped for generating electrical stimulation pulses for delivery along stimulation vectors through tissues of a patient in which the device is implanted, the device provided with a set of voltage multipliers connected to a voltage source for providing voltages for the stimulation pulses, the method comprising:
- determining candidate pulse widths for selected voltage multipliers and for selected stimulation vectors, each candidate pulse width corresponding to a lowest energy pulse sufficient to achieve capture within the tissues of the patient using a selected vector and using a voltage supplied by a corresponding voltage multiplier;
determining a lowest operable voltage multiplier for the selected vector based on the candidate minimum energy pulse widths; and
controlling generation of stimulation pulses using the lowest operable voltage multiplier for delivery along the selected vector.
1 Assignment
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Accused Products
Abstract
Techniques are provided for use with implantable devices equipped with programmable voltage multipliers (including voltage dividers.) Candidate pulse widths are determined for selected voltage multipliers and stimulation vectors. Each candidate pulse width corresponds to a lowest pulse energy sufficient to achieve capture within the tissues of the patient (subject to a safety margin) using the selected vector and using the corresponding voltage multiplier. As such, a candidate pulse width represents a preferred or optimal pulse width, at least insofar as energy consumption is concerned. However, depending upon the capabilities of the device, the candidate pulse width might not be achievable. Accordingly, for each programmable vector, the system determines a lowest “operable” voltage multiplier sufficient to generate a pulse at a candidate pulse width subject to the capabilities of the device. The system then determines the corresponding current drain, and the vector achieving the lowest current drain at the lowest operable voltage multiplier is selected for the delivery of stimulation.
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Citations
31 Claims
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1. A method for use with an implantable medical device equipped for generating electrical stimulation pulses for delivery along stimulation vectors through tissues of a patient in which the device is implanted, the device provided with a set of voltage multipliers connected to a voltage source for providing voltages for the stimulation pulses, the method comprising:
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determining candidate pulse widths for selected voltage multipliers and for selected stimulation vectors, each candidate pulse width corresponding to a lowest energy pulse sufficient to achieve capture within the tissues of the patient using a selected vector and using a voltage supplied by a corresponding voltage multiplier; determining a lowest operable voltage multiplier for the selected vector based on the candidate minimum energy pulse widths; and controlling generation of stimulation pulses using the lowest operable voltage multiplier for delivery along the selected vector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 25, 26, 27, 28)
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24. The method of claim 24 wherein the programmer device is equipped with a “
- one button”
energy optimization function that controls the operation of each of said steps for each of a set of stimulation vectors.
- one button”
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29. A system within an implantable medical device equipped for generating electrical stimulation pulses for delivery along stimulation vectors through tissues of a patient in which the device is implanted, the device provided with a set of voltage multipliers connected to a voltage source for providing voltages for the stimulation pulses, the system comprising:
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a voltage multiplier-based pulse width determination system operative for a selected stimulation vector to determine candidate pulse widths for selected voltage multipliers, each candidate pulse width corresponding to a lowest energy pulse sufficient to achieve capture within the tissues of the patient using the selected vector and using a voltage supplied by a corresponding voltage multiplier; a lowest operable voltage multiplier determination system operative to determine a lowest operable voltage multiplier based on the candidate minimum energy pulse widths; and a voltage multiplier-based stimulation control system operative to control generation of stimulation pulses using the lowest operable voltage multiplier for delivery along the selected vector.
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30. An external system for use with an implantable medical device equipped for generating electrical stimulation pulses for delivery along stimulation vectors through tissues of a patient in which the device is implanted, the implantable device provided with a set of voltage multipliers connected to a voltage source for providing voltages for the stimulation pulses, the external system comprising:
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a voltage multiplier-based pulse width determination system operative for a selected stimulation vector to determine candidate pulse widths for selected voltage multipliers, each candidate pulse width corresponding to a lowest energy pulse sufficient to achieve capture within the tissues of the patient using the selected vector and using a voltage supplied by a corresponding voltage multiplier; a lowest operable voltage multiplier determination system operative to determine a lowest operable voltage multiplier based on the candidate minimum energy pulse widths; and a voltage multiplier-based stimulation control system operative to generate control signals for sending to the implantable device for controlling the device to generate stimulation pulses using the lowest operable voltage multiplier for delivery along the selected vector.
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31. A system for use with an implantable medical device equipped for generating electrical stimulation pulses for delivery along stimulation vectors through tissues of a patient in which the device is implanted, the device provided with a set of voltage multipliers connected to a voltage source for providing voltages for the stimulation pulses, the system comprising:
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means for determining candidate pulse widths for selected voltage multipliers and for a selected stimulation vector, each candidate pulse width corresponding to a lowest energy pulse sufficient to achieve capture within the tissues of the patient using the selected vector and using a voltage supplied by a corresponding voltage multiplier; means for determining a lowest operable voltage multiplier for the selected vector based on the candidate minimum energy pulse widths; and means for controlling generation of stimulation pulses using the lowest operable voltage multiplier for delivery along the selected vector.
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Specification