Intra-aneurysm devices

1. A method of treating an aneurysm, comprising:

moving, through a vascular system, a delivery catheter to position a distal end of the delivery catheter at an aneurysm;

while the distal end of the delivery catheter is at the aneurysm, delivering a vaso-occlusive device from the delivery catheter into the aneurysm, wherein delivering the vaso-occlusive device comprises expanding the vaso-occlusive device from a collapsed delivery configuration to an expanded deployed configuration; and

responsive to delivering the vaso-occlusive device into the aneurysm:

bridging, by a plurality of inter-woven wires of the vaso-occlusive device, a neck of the aneurysm,

occluding, by the plurality of inter-woven wires of the vaso-occlusive device, the neck of the aneurysm, and

pressing the vaso-occlusive device against at least a portion of a dome of the aneurysm,

wherein, when the plurality of inter-woven wires are in the expanded deployed configuration, first ends of the plurality of inter-woven wires form an external concavity in a first end portion of the vaso-occlusive device, and

wherein, when the plurality of inter-woven wires are in the expanded deployed configuration, second ends of the plurality of inter-woven wires form an external concavity in a second end portion of the vaso-occlusive device.

2. The method of claim 1 , wherein bridging, by the plurality of inter-woven wires of the vaso-occlusive device, the neck of the aneurysm comprises completely covering the neck of the aneurysm.

3. The method of claim 2 , wherein a lower member of the vaso-occlusive device sits in the neck of the aneurysm while the lower member completely covers the neck of the aneurysm, and wherein the lower member comprises the first end portion.

4. The method of claim 1 , wherein the aneurysm is a wide neck aneurysm in which the neck has a diameter that is at least 80 percent of a largest diameter of the aneurysm.

5. The method of claim 1 , wherein occluding the neck is performed without another vaso-occlusive device within the aneurysm.

6. The method of claim 1 , further comprising compressing the vaso-occlusive device against a wall of the aneurysm.

7. The method of claim 1 , further comprising transferring a force along the plurality of inter-woven wires to transfer the force between a lower member of the vaso-occlusive device positioned in the neck and an upper member of the vaso-occlusive device positioned in the dome, wherein the lower member comprises the first end portion, and wherein the upper member comprises the second end portion.

8. The method of claim 7 , wherein the upper member and the lower member are contiguous.

9. The method of claim 1 , further comprising:

imaging the aneurysm;

responsive to imaging the aneurysm, determining a dimension from the dome to the neck; and

selecting, based on the dimension, the vaso-occlusive device from among a plurality of vaso-occlusive devices such that the vaso-occlusive device conforms to the at least the portion of the dome of the aneurysm after the vaso-occlusive device is delivered to the aneurysm.

10. The method of claim 1 , wherein expanding the vaso-occlusive device from the collapsed delivery configuration to the expanded deployed configuration comprises self-expanding the vaso-occlusive device.

11. The method of claim 10 , wherein, in the expanded deployed configuration, the plurality of inter-woven wires form a middle body portion that is (i) between the first end portion and the second end portion and (ii) defines a cylindrical shape.

12. The method of claim 1 , wherein expanding the vaso-occlusive device from a collapsed delivery configuration to an expanded deployed configuration comprises expanding the plurality of inter-woven wires such that the plurality of inter-woven wires define a substantially spherical interior region.

13. The method of claim 1 , wherein occluding, by the plurality of inter-woven wires of the vaso-occlusive device, the neck of the aneurysm comprises forming an embolus by the plurality of inter-woven wires alone.

14. The method of claim 1 , wherein delivering the vaso-occlusive device comprises:

sliding a pusher member within the delivery catheter; and

detaching, at a detachment junction, the vaso-occlusive device from the pusher member, wherein the detachment junction is between the first end portion of the vaso-occlusive device and the pusher member.

15. The method of claim 14 , wherein detaching, at the detachment junction, the vaso-occlusive device from the pusher member comprises applying a thermal stimulus to the detachment junction.

16. A method for occluding an aneurysm, comprising:

advancing a vaso-occlusive device in a compressed delivery configuration through a delivery catheter, wherein the vaso-occlusive device is formed of a plurality of inter-woven wires, wherein the plurality of inter-woven wires comprises a first end portion, a second end portion, and a middle body portion between the first end portion and the second end portion;

deploying the vaso-occlusive device from a distal end of the delivery catheter into a sac of the aneurysm;

expanding an entirety of the middle body portion, between the first end portion and the second end portion, laterally outward from the compressed delivery configuration to form a shape to conform to a shape of the sac, wherein the plurality of inter-woven wires form an external concavity in the first end portion and an external concavity in the second end portion of the vaso-occlusive device,

bridging, by the plurality of inter-woven wires of the vaso-occlusive device, a neck of the aneurysm; and

occluding, by the plurality of inter-woven wires alone, the neck of the aneurysm to divert, at the neck of the aneurysm, blood flowing in a parent vessel away from the aneurysm.

17. The method of claim 16 , further comprising responsive to expanding the entirety of the middle body portion, pressing at least a portion of the vaso-occlusive device against at least a portion of a dome of the aneurysm.

18. The method of claim 16 , wherein bridging, by the plurality of inter-woven wires of the vaso-occlusive device, the neck of the aneurysm comprises the first end portion sitting in and completely covering the neck of the aneurysm.

19. The method of claim 18 , wherein the aneurysm is a wide neck aneurysm in which the neck has a diameter that is at least 80 percent of a largest diameter of the aneurysm.

20. The method of claim 16 , wherein the occluding is performed without another vaso-occlusive device within the aneurysm.

21. The method of claim 16 , wherein the expanding the vaso-occlusive device laterally outward further comprises forming a substantially spherical interior region defined by the middle body portion, the first end portion, and the second end portion.

22. The method of claim 16 , further comprising transferring a force along the plurality of inter-woven wires to transfer the force between a lower member of the vaso-occlusive device positioned in the neck and an upper member of the vaso-occlusive device positioned in the sac of the aneurysm.

23. The method of claim 16 , wherein expanding the vaso-occlusive device comprises self-expanding the plurality of inter-woven wires from the compressed delivery configuration to from an expanded deployed configuration.

24. The method of claim 23 , wherein, in the expanded deployed configuration, the plurality of inter-woven wires form a middle body portion that is (i) between the first end portion and the second end portion and (ii) defines a cylindrical shape.

25. The method of claim 23 , wherein expanding the vaso-occlusive device from the compressed delivery configuration to the expanded deployed configuration comprises expanding the plurality of inter-woven wires such that the plurality of inter-woven wires define a substantially spherical interior region.

26. The method of claim 16 , further comprising:

sliding a pusher member within the delivery catheter; and

detaching, at a detachment junction, the vaso-occlusive device from the pusher member, wherein the detachment junction is between the first end portion of the vaso-occlusive device and the pusher member.

27. A method of treating an aneurysm, comprising:

moving, through a vascular system, a delivery catheter to position a distal end of the delivery catheter at an aneurysm;

while the distal end of the delivery catheter is at the aneurysm, delivering a vaso-occlusive device from the delivery catheter into the aneurysm, wherein delivering the vaso-occlusive device comprises expanding the vaso-occlusive device from a collapsed delivery configuration to an expanded deployed configuration; and

responsive to delivering the vaso-occlusive device into the aneurysm:

bridging, by a plurality of inter-woven wires of the vaso-occlusive device, a neck of the aneurysm, wherein bridging, by the plurality of inter-woven wires of the vaso-occlusive device, the neck of the aneurysm comprises completely covering the neck of the aneurysm,

occluding, by the plurality of inter-woven wires of the vaso-occlusive device, the neck of the aneurysm,

wherein, when the plurality of inter-woven wires are in the expanded deployed configuration, first ends of the plurality of inter-woven wires form an external concavity in a lower end portion of the vaso-occlusive device,

wherein bridging the neck of the aneurysm comprises the lower end portion of the vaso-occlusive device sitting in the neck of the aneurysm while the lower end portion completely covers the neck of the aneurysm, and

wherein, when the plurality of inter-woven wires are in the expanded deployed configuration, second ends of the plurality of inter-woven wires form an external concavity in an upper end portion of the vaso-occlusive device.

28. The method of treating an aneurysm of claim 27 , wherein the aneurysm is a wide neck aneurysm in which the neck has a diameter that is at least 80 percent of a largest diameter of the aneurysm.

29. The method of treating an aneurysm of claim 27 , wherein the occluding is performed without another vaso-occlusive device within the aneurysm.

30. The method of treating an aneurysm of claim 27 , wherein expanding the vaso-occlusive device comprises self-expanding the plurality of inter-woven wires from the collapsed delivery configuration to an expanded deployed configuration.