Systems and methods for producing asynchronous neural responses to treat pain and/or other patient conditions

• US 9,403,013 B2
• Filed: 09/10/2014
• Issued: 08/02/2016
• Est. Priority Date: 01/29/2009
• Status: Active Grant

• Current Assignee: Nevro Corporation
• Original Assignee: Nevro Corporation
• Inventors: Walker, Andre B., Fang, Zi-Ping, Caparso, Anthony V.
• Primary Examiner(s): MANUEL, GEORGE C
• Application Number:
  US14/483,061
• Publication Number:
  US 20150105839A1
• Time in Patent Office: 692 Days
• US Class Current: 1/1
• CPC Class Codes: A61N 1/0551 Spinal or peripheral nerve electrodes
• CPC Class Codes: A61N 1/36071 Pain
• CPC Class Codes: A61N 1/36171 Frequency
• CPC Class Codes: A61N 1/37247 User interfaces, e.g. input or presentation means

Abstract

Systems and methods for producing asynchronous neural responses to treat pain and/or other patient conditions are disclosed. A method in accordance with a particular embodiment includes selecting a target stimulation frequency that is above a threshold frequency, with the threshold frequency corresponding to a refractory period for neurons of a target sensory neural population. The method can further include producing a patient sensation of paresthesia by directing an electrical signal to multiple sensory neurons of the target sensory neural population at the stimulation frequency, with individual neurons of the sensory neural population completing corresponding individual refractory periods at different times, resulting in an asynchronous sensory neuron response to the electrical signal.

Claims

1. A system for producing an asynchronous neural response in a patient, the system comprising:

a pulse generator having a machine-readable medium with first instructions that, when executed, cause the pulse generator to transmit an electrical stimulation signal having a frequency, and second instructions that, when executed adjust the frequency of the electrical stimulation signal;

an electrode coupleable to the pulse generator to deliver the electrical stimulation signal to a target neural population of the patient; and

a sensor positionable to detect a neural response to the electrical stimulation signal,

wherein the second instructions adjust the frequency of the electrical stimulation signal in response to an input from the sensor.

2. The system of claim 1 wherein the input is a detection of synchronous neural response or an asynchronous neural response produced by the target neural population.

3. The system of claim 2 wherein the sensor is configured to detect the neural response via at least one action potential generated by the target neural population.

4. The system of claim 1 wherein the neural response corresponds to an overall action potential sum.

5. The system of claim 1 wherein adjusting the frequency of the electrical stimulation signal includes increasing the frequency of the electrical stimulation signal to generate a decrease in an overall action potential sum.

6. The system of claim 1 wherein adjusting the frequency of the electrical stimulation signal includes adjusting the frequency by a predetermined increment.

7. The system of claim 1 wherein adjusting the frequency of the electrical stimulation signal includes adjusting the frequency of the electrical stimulation signal within a range from 3.0 kHz to 10 kHz.

8. A system for treating a patient'"'"'s pain, comprising:

an implantable pulse generator coupleable to an implantable signal delivery device and programmed with instructions that, when executed;

direct an electrical stimulation signal to a target neural population, and

respond to an indication corresponding to a synchronous neural response from the target neural population by adjusting a frequency of the electrical stimulation signal within a range from 3.0 kHz to 10 kHz.

9. The system of claim 8 wherein the instructions, when executed, select a target stimulation frequency based at least partially on a determination of a minimum action potential generated by the target neural population.

10. The system of claim 8 wherein adjusting a frequency of the electrical stimulation signal includes alternating between decreasing the frequency of the electrical stimulation signal and increasing the frequency of the electrical stimulation signal.

13. The system of claim 8, further comprising a patient sensor, wherein the patient sensor detects action potentials generated by the target neural population.

11. A system for treating a patient'"'"'s pain, comprising:

an implantable pulse generator coupleable to an implantable signal delivery device and programmed with instructions that, when executed;

determine a baseline level for an action potential generated by a target neural population,

direct an electrical stimulation signal to the target neural population, and

respond to an indication corresponding to a synchronous neural response from the target neural population by adjusting a frequency of the electrical stimulation signal within a range from 3.0 kHz to 10 kHz.

12. A system for treating a patient'"'"'s pain, comprising:

an implantable pulse generator coupleable to an implantable signal delivery device and programmed with instructions that, when executed;

determine a baseline level for an action potential generated by a target neural population,

direct an electrical stimulation signal to a target neural population, and

respond to an indication corresponding to a synchronous neural response from the target neural population by adjusting a frequency of the electrical stimulation signal within a range from 3.0 kHz to 10 kHz, wherein adjusting the frequency includes increasing the frequency while the action potential is above the baseline level.

14. A method for configuring a spinal cord stimulation device, the method comprising:

programming the spinal cord stimulation device to;

deliver an electrical stimulation signal to a target neural population, and

respond to an indication of an action potential generated by the target neural population by adjusting a frequency of the electrical stimulation signal.

15. The method of claim 14 wherein programming the spinal cord stimulation device to adjust a frequency of the electrical stimulation signal includes programming the spinal cord stimulation device to increase the frequency of the electrical stimulation signal.

16. The method of claim 15, further comprising programming the spinal cord stimulation device to select a target stimulation frequency based on a decrease in the action potential.

17. The method of claim 16 wherein programming the spinal cord stimulation device to select a target stimulation frequency includes identifying a minimum action potential.

18. The method of claim 14 wherein programming the spinal cord stimulation device to adjust a frequency of the electrical stimulation signal includes programming the spinal cord stimulation device to alternate between increasing the frequency of the electrical stimulation signal and decreasing the frequency of the electrical stimulation signal.

19. A method for configuring a spinal cord stimulation device, the method comprising:

programming the spinal cord stimulation device to;

deliver an electrical stimulation signal to a target neural population,

respond to an indication of an action potential generated by the target neural population by adjusting a frequency of the electrical stimulation signal, and

select a target stimulation frequency based on a decrease in the action potential, wherein programming the spinal cord stimulation device to adjust a frequency of the electrical stimulation signal includes programming the spinal cord stimulation device to increase the frequency of the electrical stimulation signal, and wherein the target stimulation frequency is in a range from 3.0 kHz to 10 kHz.

20. A method for configuring a spinal cord stimulation device, the method comprising:

programming the spinal cord stimulation device to;

deliver an electrical stimulation signal to a target neural population,

respond to an indication of an action potential generated by the target neural population by adjusting a frequency of the electrical stimulation signal, and

identify a baseline action potential.

21. The method of claim 20 wherein the baseline action potential corresponds to a synchronous response, and wherein responding to an indication of an action potential generated by the target neural population by adjusting a frequency of the electrical stimulation signal includes adjusting the frequency of the electrical stimulation signal in response to an action potential that is less than the baseline action potential.