Alternative operation mode for an implantable medical device based upon lead condition
First Claim
1. A method comprising:
- determining first impedance associated with a lead assembly of an implantable medical device;
determining whether the first impedance is within an acceptable range;
determining at least one parameter associated with the lead assembly when the first impedance is out of the acceptable range;
analyzing the at least one parameter to determine whether a lead assembly problem is intermittent;
performing a pre-stimulation check prior to delivery of a therapeutic electrical signal when the lead assembly problem is intermittent;
delivering the therapeutic electrical signal when the pre-stimulation check indicates that the lead assembly is functional; and
delaying delivery of the therapeutic electrical signal when the pre-stimulation check indicates that the lead assembly is not functional.
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Accused Products
Abstract
A method, apparatus, and system for determining an adverse operational condition associated with a lead assembly in an implantable medical device used for providing a therapeutic electrical signal to a cranial nerve. A first impedance associated with the lead assembly configured to provide the therapeutic electrical signal to a cranial nerve is detected. A determination is made as to whether the first impedance is outside a first predetermined range. A second impedance is detected. The detection of the second impedance is performed within a predetermined period of time from the time of the detection of the first impedance. A determination is made as to whether the second impedance is outside a second predetermined range. If the first impedance is outside the first range and the second impedance is outside the second range, the implantable medical device is prevented from providing the therapeutic electrical signal.
251 Citations
24 Claims
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1. A method comprising:
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determining first impedance associated with a lead assembly of an implantable medical device; determining whether the first impedance is within an acceptable range; determining at least one parameter associated with the lead assembly when the first impedance is out of the acceptable range; analyzing the at least one parameter to determine whether a lead assembly problem is intermittent; performing a pre-stimulation check prior to delivery of a therapeutic electrical signal when the lead assembly problem is intermittent; delivering the therapeutic electrical signal when the pre-stimulation check indicates that the lead assembly is functional; and delaying delivery of the therapeutic electrical signal when the pre-stimulation check indicates that the lead assembly is not functional. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method comprising:
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determining via a controller of an implantable medical device whether an impedance associated with a lead assembly of the implantable medical device is within an accepted range; performing at least one test to generate data associated with the lead assembly when the impedance is not within the accepted range; classifying a type of problem associated with the lead assembly based on the data; performing a first remedial action when the type of the problem is an intermittent problem, wherein the first remedial action includes; performing a pre-stimulation check prior to delivery of a therapeutic electrical signal; delivering the therapeutic electrical signal when the pre-stimulation check indicates that the lead assembly is functional; and delaying delivery of the therapeutic electrical signal when the pre-stimulation check indicates that the lead assembly is not functional; and performing a second remedial action when the type of the problem is a second type, wherein the first remedial action is different than the second remedial action. - View Dependent Claims (13, 14, 15)
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16. A method comprising:
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monitoring a lead condition of a lead assembly of an implantable medical device configured to provide therapeutic electrical signals; receiving data that indicates a lead condition problem; performing a lead condition analysis to classify a type of the lead condition problem; preventing the implantable medical device from providing the therapeutic electrical signals when the type of the lead condition problem is a severe problem; and implementing a secondary operation mode of the implantable medical device when the type of the lead condition problem is other than the severe problem by; performing a pre-stimulation check regimen prior to providing a therapeutic electrical signal of the therapeutic electrical signals when the type is an intermittent problem; and implementing one of an alternate dosage of the therapeutic electrical signals applied by the implantable medical device or a change in an electrode configuration when the type is neither the intermittent problem nor the severe problem. - View Dependent Claims (17, 18, 19, 20)
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21. A non-transitory computer readable medium comprising instructions, that when executed by a processor, cause the processor to perform operations including:
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performing at least one test to generate data associated with a lead assembly of an implantable medical device when an impedance associated with the lead assembly is outside of an accepted range; detecting that a problem is associated with the lead assembly based on the at least one test; classifying a type of the problem associated with the lead assembly; implementing a first remedial action when the type of the problem is a first type by; performing a pre-stimulation check before initiation of a therapeutic electrical signal from the implantable medical device to a patient when the type of the problem is an intermittent problem; initiating the therapeutic electrical signal when the pre-stimulation check indicates that there is no lead assembly problem; and delaying the therapeutic electrical signal when the pre-stimulation check indicates existence of the lead assembly problem; and implementing a second remedial action when the type of the problem is a second type, wherein the first remedial action is different than the second remedial action. - View Dependent Claims (22, 23, 24)
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Specification