Anchor system for PFO closure

1. A surgical tool, comprising:

a self-expanding combination anchor, comprising two or more fingers, each finger comprising a distal end and a proximal end, and a first segment connected to a second segment, wherein said first segment of each finger is distal to said second segment of said each finger, and

a base having the proximal end of each of the two or more fingers coupled to the base, wherein the base is moveable from a first position to a second position, the first position constraining the two or more fingers of the self expanding combination anchor in a substantially straight configuration and the second position enabling expansion of the two or more fingers of the self expanding combination anchor, wherein the expansion of the two or more fingers defines opposing U-shaped openings having open ends oriented outward from the base and closed ends that respectively contact surfaces of a guide catheter along lines that are parallel to a longitudinal center of the combination anchor.

2. The surgical tool of claim 1 , wherein a free end of the distal end of each finger is oriented radially outward from a longitudinal axis of the anchor.

3. The surgical tool of claim 1 , wherein each finger further comprises a first curved portion located radially inward from the distal end of said each finger.

4. The surgical tool of claim 3 , wherein the first curved portion of each finger has an inflection point substantially tangent to a line substantially parallel to a longitudinal axis of the anchor.

5. The surgical tool of claim 3 , wherein the first curved portion of each finger includes a portion of the first segment and a portion of the second segment of said each finger.

6. The surgical tool of claim 3 , wherein each finger further comprises a second curved portion, the second curved portion oriented radially outward from the first curved portion of said each finger.

7. The surgical tool of claim 6 , wherein the second curved portion of each finger is a portion of the second segment of said each finger.

8. The surgical tool of claim 6 , wherein each finger curves radially inward proximal to the second curved portion of said each finger.

9. The surgical tool of claim 1 , wherein the anchor comprises four fingers.

10. The surgical tool of claim 1 , wherein the anchor forms an X-shape.

11. The surgical tool of claim 1 , wherein the base is operable to drive a staple supported by the base when the base is in the second position.

12. The surgical tool of claim 1 , wherein the each of the opposing U-shaped openings have an opening extending radially outward from a longitudinal axis of the anchor.

13. The surgical tool of claim 12 , further comprising a staple that is X-shaped.

14. The surgical tool of claim 13 , wherein tines of the staple are angularly spaced apart from the fingers.