Method and device for left atrial appendage closure
A left atrial appendage (LAA) closure device that includes an anchor portion having a first segment and a second segment that are connected in spaced-apart manner by a first connector, a sealing portion, and a second connector that connects the anchor portion and the second segment sealing portion. The first segment is adapted to be positioned outside the LAA and in the pericardial sac after deployment of the closure device, and the second segment is positioned between the first segment and the sealing portion inside the LAA.
1. A left atrial appendage (LAA) closure device that is deployed in an LAA, the LAA having a wall and an opening to the left atrium, comprising:
an anchor portion that has a first segment and a second segment that are connected in spaced-apart manner by a first connector, the first segment and the second segment each having a diameter, the second segment is a single disc member, and wherein the first connector is sized to have a smaller diameter than the first segment and the second segment so that an annular space is defined between the first segment and the second segment;
a sealing portion that is configured as a container having a cylindrical wall structure that has a diameter that is greater than the diameter of the first segment; and
a second connector that connects the second segment and the sealing portion;
wherein when the closure device is deployed inside an LAA, the first connector is positioned in a puncture opening in the LAA wall, the first segment positioned outside the LAA in the pericardial space, and the sealing portion is positioned adjacent the opening to the left atrium; and
wherein each of the first and second segments is a disc member, and each disc member has a diameter between 3 mm to 100 mm, and a thickness between 2 mm to 90 mm.
2. The device of claim 1 , wherein the container has an outer end adjacent the opening to the left atrium, and wherein the container has a variable cross-sectional area where the diameter gradually increases in a tapered manner from the second connector towards the outer end.
3. The device of claim 1 , wherein the sealing portion is formed from braided wires, and the ends of the braided wires are collected into a braided end.
4. The device of claim 1 , wherein the first segment is a disc member.
5. The device of claim 1 wherein the container has a largest diameter between 3 mm to 300 mm, and a height between 2 mm to 500 mm.
6. A left atrial appendage (LAA) closure device that is deployed in an LAA, the LAA having a wall and an opening to the left atrium, comprising:
an anchor portion that has a first segment and a second segment that are connected in spaced-apart manner by a first connector, the first segment and the second segment each having a diameter, and wherein the first connector is sized to have a smaller diameter than the first segment and the second segment so that an annular space is defined between the first segment and the second segment;
a sealing portion that is configured as a container having a cylindrical wall structure that has a diameter that is greater than the diameter of the first segment; and
a second connector that connects the second segment and the sealing portion;
wherein when the closure device is deployed inside an LAA, the first connector is positioned in a puncture opening in the LAA wall, the first segment positioned outside the LAA in the pericardial space, and the sealing portion is positioned adjacent the opening to the left atrium; and
wherein each of the first and second segments is a disc member, and each disc member has a diameter between 3 mm to 100 mm, and a thickness between 2 mm to 90 mm.
7. The device of claim 6 , wherein the container has a diameter between 3 mm to 300 mm, and a height between 2 mm to 500 mm.