Transcutaneous neuromodulation system and methods of using same
A neuromodulation system, device, and method are disclosed. In an embodiment, a neuromodulation system includes a processor, a signal generator, a first electrode, and a second electrode. The processor in cooperation with the signal generator, the first electrode, and the second electrode are configured to deliver a transcutaneous stimulation to a mammal. The transcutaneous stimulation is configured by the processor for inducing voluntary movement in the mammal. The first electrode is positioned transcutaneously on a spinal cord and/or spinal cord dorsal roots of the mammal. Additionally, the second electrode is placed transcutaneously on or over at least one of the spinal cord and/or the spinal cord dorsal roots, a muscle, a nerve, or on or near a target end organ or bodily structure of the mammal. The second electrode is in communication with the first electrode through a hardwire or wireless connection.
1. A neuromodulation system comprising:
a processor;
a signal generator communicatively coupled to the processor; and
a plurality of electrodes communicatively coupled to the signal generator, the plurality of electrodes comprising at least:
a first electrode,
a second electrode, and
a third electrode,
wherein the processor in cooperation with the signal generator, the first electrode, the second electrode, and the third electrode are configured to deliver a transcutaneous spinal cord stimulation to a user having a spinal cord injury, the transcutaneous spinal cord stimulation configured by the processor for inducing voluntary movement in the user,
wherein the first electrode, the second electrode, and the third electrode are positioned transcutaneously on the user's neck, at least one electrode positioned below the spinal cord injury,
wherein the first electrode is positioned over a cervical portion of the user's spinal cord, and
wherein the second electrode and the third electrode are placed higher on the neck than the first electrode, and laterally offset on either side of the first electrode, on or over at least one of the spinal cord and/or the spinal cord dorsal roots, a muscle, or a nerve.
2. The neuromodulation system of claim 1 , wherein the first electrode has a larger footprint than the second electrode and the third electrode.
3. The neuromodulation system of claim 1 , wherein the induced voluntary movement is of an arm, a hand, a finger, or a combination thereof.
4. The neuromodulation system of claim 1 , wherein the induced voluntary movement comprises at least one of reaching, grasping, pulling and pushing, swallowing and chewing, breathing, and coughing.
5. The neuromodulation system of claim 1 , wherein the processor is further configured to model a relationship between the transcutaneous spinal cord stimulation applied to the user and quantifiable results generated by the induced voluntary movement.
6. The neuromodulation system of claim 5 , wherein the second electrode is a sensor or a recording electrode and configured to record the quantifiable results generated by the induced voluntary movement.
7. The neuromodulation system of claim 6 , wherein the sensor or the recording electrode is an electromyography (“EMG”) sensor, a joint angle sensor, or a flex sensor.
8. The neuromodulation system of claim 5 , wherein the model is a machine learning method.
9. The neuromodulation system of claim 5 , wherein the processor is further configured to select a second transcutaneous spinal cord stimulation using the model for subsequent delivery to the user.
10. The neuromodulation system of claim 9 , wherein the model causes the second transcutaneous spinal cord stimulation to be more optimized for inducing voluntary movement compared to the voluntary movement induced by the transcutaneous spinal cord stimulation.
11. The neuromodulation system of claim 9 , wherein the transcutaneous spinal cord stimulation and the second transcutaneous spinal cord stimulation are specified by at least one of a waveform shape, an amplitude, a frequency, or a relative phasing.
12. The neuromodulation system of claim 11 , wherein the transcutaneous spinal cord stimulation and the second transcutaneous spinal cord stimulation have a frequency between 5-40 Hz with an overlapping filling frequency between 5 kHz and 10 kHz.
13. The neuromodulation system of claim 11 , wherein the transcutaneous spinal cord stimulation and the second transcutaneous spinal cord stimulation are delivered between 1-120 mA, 20-100 mA, or 85-100 mA.
14. The neuromodulation system of claim 1 , wherein the transcutaneous spinal cord stimulation and the second transcutaneous spinal cord stimulation include a bipolar rectangular stimulus with a pulse duration between 0.5 milliseconds (“ms”) to 3.0 ms that is filled with a carrier frequency between 5 kHz and 10 kHz.
15. The neuromodulation system of claim 1 , wherein the transcutaneous spinal cord stimulation is delivered over multiple time periods such that:
during a first time period, the transcutaneous spinal cord stimulation is applied to the user during physical conditioning of the user;
during a second time period after the first time period, the transcutaneous spinal cord stimulation is applied to the user during reduced or no physical conditioning of the user; and
during a third time period after the second time period, the transcutaneous spinal cord stimulation is applied to the user during the physical conditioning of the user,
wherein the transcutaneous spinal cord stimulation applied during the first time period is used to establish a functional baseline of the user.
16. The neuromodulation system of claim 1 , wherein the transcutaneous spinal cord stimulation is configured to be delivered after a neuropharmaceutical agent is administered to the user.
17. The neuromodulation system of claim 16 , wherein the neuropharmaceutical agent includes at least one of a serotonergic drug, a dopaminergic drug, a noradrenergic drug, a monoaminergic drug, a GABAergic drug, or a glycinergic drug.
18. A neuromodulation system comprising:
a processor;
a signal generator communicatively coupled to the processor; and
a plurality of electrodes communicatively coupled to the signal generator, the plurality of electrodes comprising at least:
a first electrode,
a second electrode, and
a third electrode,
wherein the processor in cooperation with the signal generator, the first electrode, the second electrode, and the third electrode are configured to deliver a transcutaneous spinal cord stimulation to a user having a spinal cord injury, the transcutaneous spinal cord stimulation configured by the processor for inducing voluntary movement in the user,
wherein the first electrode, the second electrode, and the third electrode are positioned transcutaneously on the user's neck, at least one electrode positioned below the spinal cord injury,
wherein the first electrode is positioned over a cervical portion of the user's spinal cord,
wherein the second electrode and the third electrode are offset with respect to the first electrode in the direction of the spinal cord, and laterally offset on either side of the first electrode, on or over at least one of the spinal cord and/or the spinal cord dorsal roots, a muscle, or a nerve, and
wherein the first electrode has a larger footprint than the second electrode and the third electrode.
19. The neuromodulation system of claim 18 , wherein the processor is further configured to model a relationship between the transcutaneous spinal cord stimulation applied to the user and quantifiable results generated by the induced voluntary movement.
20. The neuromodulation system of claim 19 , wherein the second electrode is a sensor or a recording electrode and configured to record the quantifiable results generated by the induced voluntary movement.