System to create arbitrary waveforms using an external inductor and an implantable medical device
First Claim
1. An implantable stimulation system comprising:
- an implantable housing;
a stimulation current generator selectively generating therapeutic stimulations and encased within the housing;
at least one implantable stimulation lead connected to the stimulation current generator and configured to deliver the therapeutic stimulations generated by the current generator to target patient tissue; and
at least one inductive element arranged to condition the stimulation current for increased efficiency of delivery of the current to the target patient tissue and wherein the inductive element is arranged externally of the housingwherein the stimulation current generator generates the therapeutic stimulations in a pulse modulated configuration having a first ripple magnitude between active and non-active pulses and wherein the at least one inductive element accumulates and returns electrical energy for delivery to the target patient tissue in an alternating manner so as to provide an effective stimulation to the target patient tissue having a lower second ripple magnitude.
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Accused Products
Abstract
An implantable stimulation system includes a stimulation current generator encased in an implantable housing, one or more stimulation leads to deliver therapeutic stimulation from the generator to target patient tissue, and inductive elements arranged to condition the stimulation for delivery to the target tissue with increased efficiency and reduced pain sensation. The inductive elements are arranged external to the housing and integral with one or more of a stimulation lead or an external component of the housing, such as a header. The inductive elements serve to condition therapeutic stimulations such that varying the output of the generator allows the system to deliver arbitrary effective waveforms to the target tissue.
29 Citations
15 Claims
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1. An implantable stimulation system comprising:
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an implantable housing; a stimulation current generator selectively generating therapeutic stimulations and encased within the housing; at least one implantable stimulation lead connected to the stimulation current generator and configured to deliver the therapeutic stimulations generated by the current generator to target patient tissue; and at least one inductive element arranged to condition the stimulation current for increased efficiency of delivery of the current to the target patient tissue and wherein the inductive element is arranged externally of the housing wherein the stimulation current generator generates the therapeutic stimulations in a pulse modulated configuration having a first ripple magnitude between active and non-active pulses and wherein the at least one inductive element accumulates and returns electrical energy for delivery to the target patient tissue in an alternating manner so as to provide an effective stimulation to the target patient tissue having a lower second ripple magnitude. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An implantable stimulation system comprising:
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an implantable housing; a stimulation current generator selectively generating therapeutic stimulations of multiple configurations and wherein the current generator is encased within the housing; at least one implantable stimulation lead connected to the stimulation current generator and configured to deliver the therapeutic stimulations generated by the current generator to target patient tissue; and at least one inductive element arranged to condition the therapeutic stimulations received from the stimulation current generator so as to deliver arbitrary conditioned effective waveforms to the target patient tissue having different morphologies than the configurations generated by the stimulation current generator and wherein the inductive element is arranged externally of the housing; wherein the stimulation current generator generates a modulated output and wherein the system changes a duty cycle of the modulated output to deliver a desired arbitrary effective waveform. - View Dependent Claims (8)
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- 9. An implantable lead for delivery of therapy from an implantable stimulation device wherein the lead includes one or more structures arranged to inductively filter therapeutic currents provided by the implantable stimulation device before delivery to a patient.
Specification