Catching mechanisms for tubular septal occluder
A septal occluder, such as one made from a polymer tube, can have portions on either side of a patent foramen ovale (PFO) or other septal defect. The portions on either side can be held in place with a catching mechanism that can take one of many forms. The tube can be made of bioresorbable materials.
1. A device for occluding a septal defect that has a distal side and a proximal side, the device comprising:
a distal end and a distal portion for contacting the distal side;
a proximal end comprising a proximal portion for contacting the proximal side and a proximal joint having a hollow center;
a center portion for extending through the septal defect and having a hollow center; and
an anchoring stick having a longitudinal axis, the anchoring stick comprising a first orientation that allows the anchoring stick to traverse the hollow center of the center portion and the hollow center of the proximal joint, and a second orientation such that the anchoring stick is adapted to engage the proximal joint of the proximal end for holding the device in place, wherein the anchoring stick traverses completely through the hollow center of the center portion and the hollow center of the proximal joint upon transition from the first orientation to the second orientation.
2. The device of claim 1 , wherein the device is adapted to close a patent foramen ovale (PFO).
3. The device of claim 1 , wherein the anchoring stick is angled, and wherein the proximal joint has at least two slots for receiving the anchoring stick in the second orientation.
4. The device of claim 3 , wherein the at least two slots are V-shaped.
5. The device of claim 1 , wherein the longitudinal axis of the anchoring stick is substantially parallel to a longitudinal axis of the device in the first orientation.
6. The device of claim 1 , wherein the longitudinal axis of the anchoring stick is perpendicular to a longitudinal axis of the device in the second orientation.
7. The device of claim 1 , wherein the device further comprises a first string having a proximal end coupled to the anchoring stick and a distal end coupled to the distal end.
8. The device of claim 7 , wherein the first string is in tension in the second orientation.
9. The device of claim 7 , wherein the device further comprises a second string coupled to the anchoring stick.