Noninvasive or percutaneous nerve stimulation

1. A method of stimulating a nerve of a patient, comprising:

providing an electro-therapy device comprising:

a signal generator configured to produce first and second signals; and

a first and a second electrode;

positioning the first electrode on an epidermis of the patient over the nerve to be stimulated;

positioning the second electrode on an epidermis of the patient at a second location;

alternating the delivery of a summation of the first and second signals to the first electrode and the second electrode, wherein the first and second signals penetrate through the epidermis into deeper tissue;

forming, from the first and second signals, a therapeutic electrical field in the deeper tissue encompassing the nerve of the patient within a volume of tissue surrounding and beneath each respective first and second electrode; and

adjusting an intensity of the first and second signal over time.

2. The method of claim 1 , wherein the adjustment of the intensity of the first and second signal slowly increases to improve stimulation.

3. The method of claim 2 , wherein the adjustment of the intensity is in response to an interactive comfort setting by the patient.

4. The method of claim 1 , further comprising halting the application of the first and second signals after a predetermined time.

5. The method of claim 4 , wherein the predetermined time is 20 to 30 minutes.

6. The method of claim 1 , wherein the second location is on an epidermis of the patient at one of:

(1) over a second nerve to be stimulated;

(2) over a source of a pain;

(3) within a predetermined radius of the nerve to be stimulated; or

(4) over a bony prominence within a predetermined radius with respect to the nerve to be stimulated.

7. The method of claim 1 , wherein:

the nerve is a sacral nerve;

the first and second electrodes are non-invasive electrodes;

the first and second electrodes are of equal area such that the density of the electrical field is the same under the first and second electrodes; and

an active electrical field forms in an equal hemisphere beneath each electrode.

8. The method of claim 7 , wherein a diameter of the hemisphere is larger than a diameter of each electrode.

9. The method of claim 7 , wherein the first and second electrodes are placed adjacent and within a predetermined radius of each other to treat multiple branches of the nerve.

10. The method of claim 7 , wherein the nerve stimulation is performed by the patient without a doctor supervision and part of a therapy to at least one of (i) reduce pelvic floor pain, and (ii) improve range of motion of the patient.

11. The method of claim 1 , wherein:

the nerve is a tibial nerve;

the first and second electrodes are non-invasive electrodes and are configured to each create an electrical field in a body of the patient;

the first electrode has a surface area that is smaller than a surface area of the second electrode such that the density of the electrical field is greater under the first electrode than the second electrode; and

a diameter of a hemisphere of an active electrical field beneath the first electrode is larger than a diameter of the first electrode.

12. The method of claim 11 , wherein the second electrode is positioned over a bony prominence on a body of the patient.

13. The method of claim 12 , wherein the second electrode is positioned within a predefined radius of the nerve.

14. The method of claim 12 , wherein the nerve stimulation is performed by the patient without a doctor supervision and is part of a therapy to cure symptoms of urinary or fecal incontinence and overactive bladder syndrome (OAB).

15. The method of claim 11 , wherein the nerve stimulation is performed by the patient without a doctor supervision and is part of a therapy to cure symptoms of urinary or fecal incontinence and overactive bladder syndrome (OAB).

16. The method of claim 1 , wherein:

the nerve is a sacral nerve;

the first and second electrodes are percutaneous electrodes and are configured to each create an electrical field in a body of the patient;

the first and second electrodes are of substantially similar surface area and shape;

a diameter of a hemisphere of an active electrical field beneath the first electrode is substantially similar to an active electrical field beneath the second electrode; and

the diameter of the hemisphere of each active electrical field is slightly larger than the diameter of each electrode.

17. The method of claim 16 , further comprising positioning the second electrode on a second sacral nerve of the patient.

18. The method of claim 1 , wherein:

the nerve is a tibial nerve;

the first electrode is a percutaneous electrode and the second electrode is a non-invasive electrode, the electrodes being configured to each create an electrical field in a body of the patient;

the first electrode has an impedance that is less than the impedance of the second electrode;

a diameter of a hemisphere of an active electrical field beneath the first electrode is larger than an active electrical field beneath the second electrode; and

the diameter of the hemisphere of each active electrical field is slightly larger than the diameter of each electrode.

19. The method of claim 18 , wherein the second electrode is positioned over a bony prominence on a body of the patient.

20. The method of claim 18 , wherein the second electrode is positioned within a predefined radius of the position of the first electrode.