Tissue opening occluder
A tissue opening occluder comprising first and second occluder portions, each occluder portion including a frame structure and an attachment structure to attach one portion to the other portion. The frames may be utilized to constrain the tissue between the two portions enough to restrict the significant passage of blood therethrough. The frame portions may be covered by a fabric suspended from a perimeter thereof. The occluder portions are conjoined at least one point on each portion.
1. A tissue opening occluder for placement in an opening formed by overlapping septa of a patent foramen ovale (PFO), the overlapping septa forming a PFO tunnel having a substantially planar geometry with a length extending between the left atrium and right atrium of a patient and a width, the tissue opening occluder comprising:
an occluder panel configured to be positioned within one of the atria of the patient the occluder panel having a periphery and a central portion;
a substantially planar anchor with a width and a length substantially greater than a thickness thereof, and
a linking element that directly connects the sub substantially planar anchor to the central portion of the occluder panel,
the substantially planar anchor configured to simultaneously extend through, engage, and conform to the substantially planar geometry inside of the PFO tunnel between the left and right atria when the occluder panel is positioned in one of the atria, the length of the substantially planar anchor configured to be at least as long as the length of the PFO tunnel, and the width of the substantially planar anchor configured to be sized and conformable to fit within the width of the PFO tunnel and being sufficiently wide to anchor the occluder panel in place in one of the atria of the patient, the substantially planar structure comprising a resilient portion configured to allow the anchor to expand into tensioned engagement with portions of the interior of the PFO tunnel to secure the anchor into position in the PFO tunnel.
2. The tissue opening occluder of claim 1 , wherein the substantially planar anchor comprises a wire structure.
3. The tissue opening occluder of claim 1 , wherein the width of the substantially planar anchor is defined as the distance between two adjacent wire portions.
4. The tissue opening occluder of claim 1 , wherein the occluder is configured such that the connection between the occluder panel and anchor is located at an edge of one of the overlapping septa.
5. The tissue opening occluder of claim 1 , wherein the occluder panel is configured to be positioned in the left atrium when the substantially planar anchor simultaneously extends through, engages, and conforms to the substantially planar geometry of the PFO tunnel.
6. The tissue opening occluder of claim 1 , wherein the occluder panel has a first portion configured to engage the septum primum along a portion of the septum primum opposite the substantially planar anchor engaged within the PFO tunnel, with the septum primum being located between the occluder panel and the substantially planar anchor, and a second portion of the occluder panel configured to engage a portion of the septum secundum.
7. The tissue opening occluder of claim 1 , further comprising fabric on at least one of the occluder panel and the substantially planar anchor.
8. The tissue opening occluder of claim 7 , wherein the fabric is porous.
9. The tissue opening occluder of claim 7 , wherein the fabric is made of ePTFE.
10. The tissue opening occluder of claim 7 , wherein the fabric is treated with a thrombogenic agent.
11. The tissue opening occluder of claim 7 , wherein the fabric is positioned within the PFO tunnel to promote tissue ingrowth within the PFO tunnel.
12. An anchor for placement in an opening formed by overlapping septa of a patent foramen ovale (PFO), the overlapping septa forming a PFO tunnel with a length extending between a first atrium and a second atrium and a width, the area between the overlapping septa defined by the length and the width being substantially planar, the anchor comprising:
a substantially planar structure defining a length and a width substantially greater than a thickness thereof, the substantially planar structure comprising a resilient portion configured to allow the anchor to expand into tensioned engagement with portions of the interior of the PFO tunnel to secure the anchor into position in the PFO tunnel;
an occluder panel having a central portion, the occluder panel configured to extend along a surface of one of the septa in one of the left and right atrium when the substantially planar structure is expanded into tensioned engagement with portions of the PFO tunnel;
a linking element that directly connects the substantially planar structure to the central portion of the occluder panel; and
a fabric connected to the substantially planar structure.
13. The anchor of claim 12 , wherein the substantially planar structure comprises a wire structure.
14. The anchor of claim 12 , wherein the substantially planar structure comprises two adjacent wire portions, wherein the width of the substantially planar structure is defined as the distance between the two adjacent wire portions, the distance between the two adjacent wire portions being adjustable to conform to the width of the PFO tunnel.
15. The anchor of claim 12 , wherein the substantially planar structure has a length configured at least as long as the length of the PFO tunnel.
16. The anchor of claim 12 , wherein the fabric is porous.
17. The anchor of claim 12 , wherein the fabric is made of ePTFE.
18. The anchor of claim 12 , wherein the fabric is treated with a thrombogenic agent.
19. The anchor of claim 12 , wherein the fabric is positioned within the PFO tunnel to promote tissue ingrowth within the PFO tunnel.