Flexible electrocardiogram (ECG) pads

1. A flexible electrocardiogram pad, comprising:

a copper layer having a skin facing side and a non-skin facing side, wherein the skin facing side includes a first portion and a second portion;

a cover which covers the second portion of the skin facing side of the copper layer;

an electroless nickel immersion gold (ENIG) cover coupled to the first portion of the copper layer; and

a paste trace layer having a skin facing side and a non-skin facing side,

wherein the paste trace layer comprises a connection portion and a pad portion;

wherein the ENIG cover is coupled on bottom of the connection portion of the non-skin facing side of the paste trace layer;

the connection portion of the non-skin facing side of the paste trace layer is coupled to the skin facing side of the copper layer via the ENIG cover; and

the pad portion of the paste trace layer is in contact with the copper layer.

2. The flexible electrocardiogram pad of claim 1 , wherein the cover and the ENIG cover span the entire surface of the copper layer on the skin facing side.

3. The flexible electrocardiogram pad of claim 1 , wherein the skin facing side of the paste trace layer is coupled to a layer made of any of silver (Ag), gold (Au), or a combination thereof.

4. The flexible electrocardiogram pad of claim 1 , wherein the pad portion of the paste trace layer on the skin facing side is a second portion of the paste trace layer, wherein an intermediate layer is coupled to the second portion of the paste trace layer.

5. The flexible electrocardiogram pad of claim 4 , wherein the intermediate layer is a reference electrode that is made of silver/silver chloride (Ag/AgCl).

6. The flexible electrocardiogram pad of claim 4 , wherein a hydrogel layer is disposed on top of the intermediate layer.

7. The flexible electrocardiogram pad of claim 4 , wherein the connection portion of the paste trace layer is a first portion of the paste trace layer, wherein a third portion of the paste trace layer is uncovered and combines with the first portion of the paste trace layer.

8. The flexible electrocardiogram pad of claim 7 , wherein the pad portion is in a predetermined shape.

9. The flexible electrocardiogram pad of claim 8 , wherein the predetermined shape is any of circular, oval, square, rectangular, triangular, hexagonal, and polygonal.

10. A method for providing a flexible electrocardiogram (ECG) pad structure, the method comprising:

providing a copper layer having a skin facing side and a non-skin facing side, wherein the skin facing side includes a first portion and a second portion;

providing a cover which covers the second portion of the skin facing side of the copper layer;

providing an electroless nickel immersion gold (ENIG) cover coupled to the first portion of the copper layer; and

providing a paste trace layer having a skin facing side and a non-skin facing side,

wherein the paste trace layer comprises a connection portion and a pad portion;

wherein the ENIG cover is coupled on bottom of the connection portion of the non-skin facing side of the paste trace layer;

coupling the connection portion of the non-skin facing side of the paste trace layer to the skin facing side of the copper layer via the ENIG cover; and coupling the pad portion of the paste trace layer to the copper layer.

11. The method of claim 10 , wherein the cover and the ENIG cover span the entire top surface of the copper layer.

12. The method of claim 10 , wherein the paste trace layer is coupled to the copper layer via a first silk screening process.

13. The method of claim 12 , further comprising: coupling an intermediate layer on top of the pad portion of the paste trace layer, wherein the intermediate layer is coupled to the pad portion of the paste trace layer via a second silk screening process.

14. The method of claim 13 , further comprising:

coupling a hydrogel layer on top of the intermediate layer.

15. The method of claim 13 , forming the pad portion of the paste trace layer into a predetermined shape, wherein the predetermined shape is any of circular, oval, square, rectangular, triangular, hexagonal, and polygonal.