Medical devices having fixation anchor

1. A medical device comprising:

a medical device body comprising a unitary frame wall having proximal portion, a distal portion and a plurality of first support structures therebetween; and

a plurality of first fixation anchors each comprising:

a first anchor body extending between a first end and an opposing second end; and

a hook portion extending from the first end,

wherein each first anchor body engages an associated first support structure of the plurality of first support structures in a fixed longitudinal relationship in a first configuration,

wherein the first fixation anchor is fabricated separate and apart from the associated first support structure of the plurality of first support structures; and wherein each first fixation anchor is formed from a first material and each first support structure of the plurality of first support structures is formed from a second material that is the same as or different from the first material,

wherein the plurality of first support structures each define an aperture extending through a wall of the medical device body, wherein at least a portion of a first anchor body is disposed within at least a portion of the aperture,

wherein each first anchor body further comprises an obstruction element at or near the second end of the first anchor body and a central portion disposed between the obstructive element and the first end, wherein the obstructive element has a width greater than a width of the central portion.

2. The medical device of claim 1 wherein each first anchor body is constructed and arranged to be removable from the first support structure in a second configuration.

3. The medical device of claim 1 further comprising a second plurality of fixation anchors that is interchangeable with the first plurality of fixation anchors.

4. The medical device of claim 1 wherein the medical device body further comprises a second plurality of support structures and wherein a first fixation anchor is interchangeable between the first support structure and the second support structure.

5. The medical device of claim 1 wherein the first anchor body and the first support structure are engaged via an engagement selected from the group consisting of a weld, an adhesive, a bond, a friction fit, an interweave, an interlock, and combinations thereof.

6. The medical device of claim 1 wherein the width of the central portion is constant between the obstruction element and the first end and is no greater than the width of the portion of the aperture in which the portion of the first anchor body is disposed.

7. The medical device of claim 6 wherein the central portion comprises at least one undulating structure constructed and arranged to extend through at least two apertures defined by the first support structure.

8. The medical device of claim 7 wherein the obstruction element and the hook portion are disposed on opposite sides of the wall of the medical device body.

9. The medical device of claim 1 wherein the obstruction element is disposed within a portion of the aperture.

10. The medical device of claim 9 wherein the central portion of the first anchor body is disposed within a portion of the aperture.

11. The medical device of claim 10 wherein the shape of the aperture coincides with the shape of the obstruction element and central portion of the first anchor body.

12. The medical device of claim 1 wherein the medical device is an implantable medical device, an occlusion device, a left atrial appendage occlusion device, or an interior vena cava filter.

13. The medical device of claim 1 and further comprising a covering surrounding at least a portion of the medical device body.

14. The medical device of claim 13 , wherein the covering includes a plurality of pores configured for blood clot filtration.

15. The medical device of claim 13 , wherein the covering is formed from a biocompatible material.