Occlusion device
Medical devices and methods for forming the medical devices are disclosed in the present application. In one illustrative example an occlusion balloon comprises an outer balloon member, and an inner balloon member having an inner wall and an outer wall and extending through at least a portion of the outer balloon member. In at least some examples, when forces acting on the inner wall of the inner balloon member equal forces acting on the outer wall of the inner balloon member, the inner balloon member defines a lumen.
1. An occlusion balloon comprising:
an outer balloon member; and
an inner balloon member having an inner wall and an outer wall and extending through at least a portion of the outer balloon member;
wherein, when the occlusion balloon is in a steady-state configuration forces acting on the inner wall of the inner balloon member equal forces acting on the outer wall of the inner balloon member, the inner balloon member defines a lumen having a distal end that is open to an interior of the outer balloon member.
2. The occlusion balloon of claim 1 , wherein the inner balloon member forms a seal when the occlusion balloon is inflated.
3. The occlusion balloon of claim 1 , wherein when forces acting inward on the outer wall of the inner balloon member are greater than forces acting outward on the inner wall of the inner balloon member, the inner wall of the inner balloon member collapses together.
4. The occlusion balloon of claim 3 , wherein when the inner wall of the inner balloon member collapses together, the inner balloon member forms a seal.
5. The occlusion balloon of claim 1 , wherein when forces acting inward on the outer wall of the inner balloon member are greater than forces acting outward on the inner wall of the inner balloon member, the inner wall of the inner balloon member collapses against the outer balloon member.
6. The occlusion balloon of claim 1 , wherein the inner balloon member is attached to the outer balloon member.
7. The occlusion balloon of claim 1 , wherein the outer balloon member folds inward at one end to form the inner balloon member.
8. The occlusion balloon of claim 1 , wherein the occlusion balloon has a proximal end and a distal end, and wherein the proximal end of the occlusion balloon comprises a funnel.
9. The occlusion balloon of claim 1 , wherein the outer balloon member has a first compliance and the inner balloon member has a second compliance, wherein the first compliance is different than the second compliance.
10. The occlusion balloon of claim 9 , wherein the first compliance is greater than the second compliance.
11. The occlusion balloon of claim 9 , wherein the second compliance is greater than the first compliance.
12. An occlusion balloon comprising:
an outer balloon member having a proximal end and a distal end;
an inner balloon member disposed within the outer balloon member, the inner balloon member having a first opening to an exterior of the outer balloon member and a second opening to an interior of the outer balloon member; and
a first self-sealing member disposed at a proximal end of the inner balloon member.
13. The occlusion balloon of claim 12 , wherein the distal end of the outer balloon member is closed.
14. The occlusion balloon of claim 12 , further comprising a second self-sealing member disposed at a distal end of the inner balloon member.
15. The occlusion balloon of claim 12 , wherein the first self-sealing member is configured to maintain a seal on the inner balloon member while allowing a shaft of up to 0.015 inches in diameter to pass through the first self-sealing member and into the inner balloon member.
16. The occlusion balloon of claim 12 , wherein the outer balloon member is porous to blood.
17. The occlusion balloon of claim 12 , wherein the first self-sealing member is comprised of one or more of:
polyurethane; silicone; and
styrene ethylene butylene styrene (SEBS).