Wave shaping for an implantable medical device
First Claim
1. An apparatus for generating a neurological stimulation waveform with an implantable medical device, comprising in combination:
- a waveform generator; and
a waveform controller coupled to the waveform generator, the waveform controller configured to perform the steps of;
(a) identifying a portion of a rate period interval corresponding to a stimulation pulse;
(b) partitioning the portion into a plurality of phases; and
(c) approximating the neurological stimulation waveform during a first one of the phases in accordance with at least one parameter.
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Accused Products
Abstract
In the embodiment of the invention, apparatus and method provide flexibility in generating a stimulation waveform (that comprises at least a stimulation pulse) to an electrode of an Implantable Neuro Stimulator (INS). The waveform is synthesized for each rate period interval. A portion of the rate period interval is identified, in which the portion comprises at least one phase. During each phase, the stimulation waveform is synthesized by a waveform controller and a waveform generator. The waveform controller utilizes waveform parameters, e.g. the initial value, final value, and step time duration, to form a digital signal to the waveform generator. The waveform generator utilizes the digital signal to form the synthesized waveform.
153 Citations
51 Claims
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1. An apparatus for generating a neurological stimulation waveform with an implantable medical device, comprising in combination:
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a waveform generator; and
a waveform controller coupled to the waveform generator, the waveform controller configured to perform the steps of;
(a) identifying a portion of a rate period interval corresponding to a stimulation pulse;
(b) partitioning the portion into a plurality of phases; and
(c) approximating the neurological stimulation waveform during a first one of the phases in accordance with at least one parameter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for generating a neurological stimulation waveform with an implantable medical device, the method comprising the steps of:
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(a) identifying a portion of a rate period interval corresponding to a stimulation pulse;
(b) partitioning the portion into a plurality of phases; and
(c) approximating the neurological stimulation waveform during a first one of the phases in accordance with at least one parameter, the portion of the rate period interval comprising the plurality of phases. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A computer-readable medium containing instructions for controlling a computer system to generate a neurological stimulation waveform with an implantable medical device, the instructions performing the steps of:
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(a) identifying a portion of a rate period interval corresponding to a stimulation pulse;
(b) partitioning the portion into a plurality of phases; and
(c) approximating the neurological stimulation waveform during a first one of the phases in accordance with at least one parameter. - View Dependent Claims (30, 31, 32)
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33. An apparatus for generating a neurological stimulation waveform with an implantable medical device, comprising in combination:
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a waveform generator, the waveform generator comprising a regulator module and a digital to analog converter (DAC); and
a waveform controller coupled to the waveform generator, the waveform controller configured to perform the steps of;
(a) identifying a portion of a rate period interval;
(b) partitioning the portion into a plurality of phases;
(c) determining an approximate value of the neurological stimulation waveform during a phase;
(d) subtracting the approximate value from a constant value in order to obtain a digital signal, the constant value approximately equal to an input voltage to the regulator module;
(e) applying the digital signal to the DAC in order to develop a desired voltage drop across the regulator module; and
(f) repeating steps (c)-(e) for each step interval of the phase.
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34. An implantable medical device, comprising in combination:
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a telemetry module;
a processor that communicates with a programmer through the telemetry module in order to configure the implantable medical device;
a therapy module that provides a neurological stimulation waveform to a patient and receives configuration information and commands about a therapeutical treatment from the processor, the therapy module comprising;
a waveform generator; and
a waveform controller coupled to the waveform generator, the waveform controller configured to perform the steps of;
(a) identifying a portion of a rate period interval;
(b) partitioning the portion into a plurality of phases;
(c) determining an approximate value of the neurological stimulation waveform during a phase;
(d) subtracting the approximate value from a constant value in order to obtain a digital signal, the constant value approximately equal to an input voltage to a regulator module; and
(e) applying the digital signal to the DAC in order to develop a desired voltage drop across the regulator module; and
a power module that provides electrical power to the telemetry module, the processor, and the therapy module.
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35. A method comprising:
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partitioning a neurological stimulation pulse into a plurality of phases;
defining different waveforms for at least some of the phases; and
generating the neurological stimulation pulse based on the defined waveforms. - View Dependent Claims (36, 37, 38, 39, 40, 41)
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42. An implantable neurological stimulation device comprising:
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a stimulation pulse generator to generate a stimulation pulse;
a stimulation interface, comprising at least one electrode, to apply the stimulation pulse; and
a stimulation pulse waveform controller that partitions a neurological stimulation pulse into a plurality of phases, defines different waveforms for at least some of the phases, and controls the stimulation pulse generator to generate the neurological stimulation pulse based on the defined waveforms. - View Dependent Claims (43, 44, 45, 46, 47)
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48. An apparatus for generating a neurological stimulation waveform with an implantable medical device, comprising in combination:
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an interface module that is coupled to at least one electrode of the implantable medical device; and
a waveform synthesizer that identifies a portion of a rate period interval corresponding to a neurological stimulation pulse, partitions the portion into a plurality of phases, approximates a neurological stimulation waveform during a first phase in accordance with at least one parameter, and applies the neurological stimulation waveform to the at least one electrode through the interface module. - View Dependent Claims (49)
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50. A waveform synthesizer for generating a neurological stimulation pulse, comprising in combination:
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a first component that identifies a portion of a rate period interval corresponding to a neurological stimulation pulse, and partitions the portion into a plurality of phases; and
a second component that approximates a neurological stimulation waveform during a first phase in accordance with at least one parameter. - View Dependent Claims (51)
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Specification