Therapeutic electrical stimulation that avoids undesirable activation
First Claim
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1. A therapy device, comprising:
- electrodes configured to deliver therapeutic electrical stimulation;
measurement circuitry configured to measure a capture threshold during a capture threshold test, to modify at least one capture threshold test energy parameter based on a strength-duration relationship for at least one undesirable nerve or muscle activation, to perform an additional capture threshold test to determine an additional capture threshold using the modified test energy parameter, and to determine energy parameters for the therapeutic electrical stimulation that produce capture and avoid the undesirable nerve or muscle activation using the additional capture threshold; and
a therapy control processor configured to use the energy parameters for delivery of the therapeutic electrical stimulation;
wherein the modified test energy parameter comprises a pulse amplitude set to an undesirable nerve or muscle activation threshold which is based on the strength-duration relationship for the undesirable nerve or muscle activation.
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Abstract
Energy parameters for electrical stimulation pulses that produce a desired activation, and avoid an undesirable activation, are determined. A strength-duration relationship for at least one desired activation produced by therapeutic electrical stimulation is measured. A strength-duration relationship for at least one undesirable activation produced by the therapeutic electrical stimulation is provided. A medical device selects, based on the desired and undesirable strength-duration relationships, one or more energy parameters for the therapeutic electrical stimulation that produce the desired activation and avoid the undesirable activation.
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Citations
10 Claims
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1. A therapy device, comprising:
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electrodes configured to deliver therapeutic electrical stimulation; measurement circuitry configured to measure a capture threshold during a capture threshold test, to modify at least one capture threshold test energy parameter based on a strength-duration relationship for at least one undesirable nerve or muscle activation, to perform an additional capture threshold test to determine an additional capture threshold using the modified test energy parameter, and to determine energy parameters for the therapeutic electrical stimulation that produce capture and avoid the undesirable nerve or muscle activation using the additional capture threshold; and a therapy control processor configured to use the energy parameters for delivery of the therapeutic electrical stimulation; wherein the modified test energy parameter comprises a pulse amplitude set to an undesirable nerve or muscle activation threshold which is based on the strength-duration relationship for the undesirable nerve or muscle activation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification