Electrical stimulation device and method for the treatment of neurological disorders
View Patent ↗An electrical stimulation system and method for the treatment of neurological disorders is disclosed. In a preferred embodiment, the electrical stimulation system includes channels of electrodes positioned in electrical contact with tissue of a neuromuscular target body region of a patient to provide pattered neuromuscular stimulation to the patient's musculature. In addition, at least one electrode from a channel is positioned in electrical contact with a tissue of the motor control region of the brain. A series of patterned electrical pulses are then applied to the patient through the channels to provide peripheral neuromuscular stimulation, and a direct current is applied transcranially to the brain. Various exemplary embodiments of the invention are disclosed.
1. An electrical stimulation system for treating neurological disorders in a patient, said electrical stimulation system comprising:
at least first, second, and third channels of electrodes; and
an electronic control unit connected to said first and second channels of a electrodes and programmed to apply a neuromuscular pulse train pattern consisting of a plurality of cycles of a triphasic overlapping pulse train to said first and second channels of electrodes in accordance with a procedure for treating said neurological disorder; and
an electronic control unit connected to said third channel of electrodes and programmed to apply a transcranial direct current in accordance with a procedure for treating said neurological disorder, wherein said third channel of electrodes are transcutaneous electrodes, and wherein said pulse train pattern and said transcranial direct current are programmed to be applied simultaneously.
2. The electrical stimulation system of claim 1 , wherein said triphasic overlapping pulse train pattern comprises a first phase of electrical pulses applied to said first channel, a second phase of electrical pulses applied to said second channel, and a third phase of electrical pulses applied to said first channel, wherein said second phase of electrical pulses commences before termination of said first phase of electrical pulses and wherein said third phase of electrical pulses commences before termination of said second phase of electrical pulses.
3. The electrical stimulation system of claim 1 , wherein said first channel comprises a first positive electrode adapted to be positioned in electrical contact with tissue of a first target body region of said patient and a first negative electrode adapted to be positioned in electrical contact with tissue of a second target body region of said patient, and
wherein said second channel comprises a second positive electrode adapted to be positioned in electrical contact with a tissue of a third target body region of said patient and a second negative electrode adapted to be positioned in electrical contact with a tissue of a fourth target body region of said patient, and wherein said third channel comprises a third positive electrode adapted to be in transcranial electrical contact with a motor control region of said patient and a third negative electrode adapted to be in electrical contact with a tissue region contralateral to said motor control region or a neutral region of said patient.
4. The electrical stimulation system of claim 3 wherein said third negative electrode is larger in size than said third positive electrode.
5. The electrical stimulation system of claim 1 wherein said transcranial direct current is selected from the group consisting of constant, pulsed, modulated, or interferential current.
6. The electrical stimulation system of claim 1 wherein said electronic control unit connected to said first and second channels and said electronic control unit connected to said third channel are the same electronic control unit.
7. The electrical stimulation system of claim 1 wherein said electronic control unit connected to said third channel of electrodes is programmed to apply a transcranial direct current comprising a continuous or pulsed direct current with electrical pulses having a pulse duration of between 0.5 microseconds and 10 minutes.
8. The electrical stimulation system of claim 1 wherein said electronic control unit connected to said third channel of electrodes is programmed to apply a transcranial direct current of about 4 milliamps or less.
9. The electrical stimulation system of claim 1 wherein said electronic control unit connected to said third channel of electrodes is programmed to apply a transcranial direct current having a current less than 10 mA, a pulse duration between 0.5 microsecond to 10 microseconds, and a pulse frequency up to 1 MHz.
10. The electrical stimulation system of claim 1 wherein said electronic control unit connected to said first and second channels of electrodes is programmed to apply said pulse train pattern in which electrical pulses in the pattern have a pulse duration between 30 microseconds and 400 microseconds.
11. The electrical stimulation system of claim 1 wherein said electronic control unit connected to said first and second channels of electrodes is programmed to apply said pulse train pattern in which electrical pulses in the pattern have a current amplitude between 25 milliamps and 140 milliamps.
12. The electrical stimulation system of claim 1 wherein said electronic control unit connected to said first and second channels of electrodes is programmed to apply said pulse train pattern in which electrical pulses in the pattern having frequency between 4 Hz and 200 Hz and a current of no more than 1 milliamp.
13. The electrical stimulation system of claim 1 , wherein said electronic control unit connected to said first and second channels of electrodes is programmed to apply a triphasic overlapping pulse train pattern comprising a first phase of electrical pulses applied to said first channel of 60 milliseconds to 120 milliseconds, a second phase of electrical pulses applied to said second channel of 60 milliseconds to 120 milliseconds, and a third phase of electrical pulses applied to said first channel of 36 milliseconds to 72 milliseconds, wherein said second phase of electrical pulses commences before termination of said first phase of electrical pulses and wherein said third phase of electrical pulses commences before termination of said second phase of electrical pulses.
14. The electrical stimulation system of claim 13 , wherein said electronic control unit connected to said first and second channels of electrodes is programmed to apply a triphasic overlapping pulse train pattern wherein the individual electrical pulses in each phase is approximately 30 Hz to 100 Hz.