Occlusive medical device with fixation members

1. An occlusive implant, comprising:

an expandable framework configured to shift between a collapsed configuration and an expanded configuration, wherein the expandable framework includes a plurality of strut members circumferentially spaced around a longitudinal axis of the expandable framework, wherein one or more of the plurality of strut members includes a first twisted portion, a second twisted portion, and a face portion extending therebetween, wherein in the expanded configuration, an entirety of the face portion extends linearly between the first twisted portion and the second twisted portion; and

a plurality of fixation members disposed along the face portion of one or more of the plurality of strut members;

wherein in the collapsed configuration, a first plurality of fixation members disposed along a first face portion are longitudinally offset and circumferentially interdigitated with a second plurality of fixation members disposed along an adjacent second face portion.

2. The occlusive implant of claim 1 , wherein the plurality of fixation members and the expandable framework are formed from a unitary tubular member.

3. The occlusive implant of claim 1 , wherein one or more of the plurality of fixation members extends radially away from the face portion.

4. The occlusive implant of claim 1 , wherein each of the plurality of strut members includes 8 or more fixation members disposed thereon.

5. The occlusive implant of claim 1 , wherein the plurality of fixation members are positioned adjacent to the first and second twisted portion of each of the strut members.

6. The occlusive implant of claim 1 , wherein the plurality of fixation members are formed by laser cutting.

7. The occlusive implant of claim 1 , wherein the first and second twisted portions are formed by a heat setting the one or more of the plurality of strut members.

8. The occlusive implant of claim 1 , wherein the expandable framework comprises a shape-memory material.

9. The occlusive implant of claim 1 , wherein in the expanded configuration, the expandable framework defines an enclosed volume.

10. An occlusive implant, comprising:

an expandable framework configured to shift between a collapsed configuration and an expanded configuration, wherein the expandable framework includes a plurality of strut members circumferentially spaced around a longitudinal axis of the expandable framework, wherein one or more of the plurality of strut members includes a first twisted portion, a second twisted portion, and a face portion extending therebetween, wherein in the expanded configuration, an entirety of the face portion extends linearly between the first twisted portion and the second twisted portion;

a plurality of fixation members disposed along the face portion of one or more of the plurality of strut members, each fixation member having a first end fixed to the strut member and a second free end extending radially away from the strut member; and

an occlusive member disposed along an outer surface of the expandable framework;

wherein in the collapsed configuration, a first plurality of fixation members disposed along a first face portion are longitudinally offset and circumferentially interdigitated with a second plurality of fixation members disposed along an adjacent second face portion.

11. The occlusive implant of claim 10 , wherein the plurality of fixation members and the expandable framework are formed from a unitary tubular member.

12. The occlusive implant of claim 10 , wherein an entirety of one or more of the plurality of fixation members defines a curve.

13. The occlusive implant of claim 10 , wherein each of the plurality of strut members includes four or more fixation members disposed thereon.

14. The occlusive implant of claim 10 , wherein the second free end of one or more of the plurality of fixation members defines a point.

15. The occlusive implant of claim 10 , wherein the occlusive member extends circumferentially around the outer surface of the occlusive member.

16. The occlusive implant of claim 10 , wherein at least a portion of the plurality of fixation members extend through an aperture formed in the occlusive member.

17. The occlusive implant of claim 10 , wherein in the expanded configuration, the expandable framework defines an enclosed volume.

18. An occlusive implant, comprising:

an expandable framework configured to shift between a collapsed configuration and an expanded configuration, wherein the expandable framework includes a plurality of strut members circumferentially spaced around a longitudinal axis of the expandable framework, wherein some of the plurality of strut members include a first twisted portion, a second twisted portion, and a face portion extending therebetween, wherein in the expanded configuration, the first and second twisted portions on a first strut member twist in a first direction, and the first and second twisted portions on a second strut member twist in a second direction opposite the first direction, wherein the first and second strut members are adjacent one another; and

a plurality of fixation members disposed along the face portion of one or more of the plurality of strut members.

19. The occlusive implant of claim 18 , wherein the expandable framework comprises a shape-memory material.

20. The occlusive implant of claim 18 , wherein in the expanded configuration, the expandable framework defines an enclosed volume.