Medical device with occlusive member
An example occlusive implant is disclosed. The example occlusive implant includes an expandable framework configured to shift between a first configuration and a second expanded configuration, an occlusive member disposed along at least a portion of an outer surface of the expandable framework and a resilient member coupled to the occlusive member. Further, the resilient member is configured to keep the occlusive member taut against an outer surface of the expandable member in both the first configuration and the second configuration.
1. An occlusive implant, comprising:
an expandable framework configured to shift between a first compact configuration and a second expanded configuration;
an occlusive member disposed along at least a portion of an outer surface of the expandable framework;
first and second resilient members coupled to the occlusive member,
a hub member disposed adjacent to the occlusive member,
wherein the first resilient member includes a coil member disposed around the hub member,
wherein the coil member is adapted to tighten the occlusive member as the expandable framework shifts between the first compact configuration and the second expanded configuration,
wherein the second resilient member includes a spring having a first end attached to the occlusive member and a second end coupled to the expandable framework;
wherein the first and second resilient members are configured to keep the occlusive member taut against an outer surface of the expandable framework in both the first compact configuration and the second expanded configuration.
2. The occlusive implant of claim 1 , further comprising a third resilient member including an elastic band, wherein the elastic band has a first end attached to the occlusive member and a second end coupled to the expandable framework.
3. The occlusive implant of claim 1 , further comprising one or more elastic fibers integrated with the occlusive member, and wherein the one or more elastic fibers are designed to elongate and contract as the expandable framework shifts between the first compact configuration and the second expanded configuration.
4. The occlusive member of claim 3 , wherein the occlusive member includes one or more inelastic fibers and wherein the one or more elastic fibers are interwoven with the one or more inelastic fibers.
5. The occlusive member of claim 3 , further comprising a plurality of rigid members disposed along the occlusive member, wherein each of the plurality of rigid members includes an aperture designed to permit fluid to flow therethrough.
6. The occlusive member of claim 1 , wherein the occlusive member includes a mesh structure, further comprising one or more elastic members interconnected to form an elastic matrix, and wherein the mesh structure is coupled to the elastic matrix.
7. The occlusive member of claim 6 , wherein the elastic matrix includes a plurality of interstices spaced throughout the elastic matrix, and wherein the mesh structure is disposed within the plurality of interstices.
8. The occlusive implant of claim 1 , wherein the spring includes a coiled portion.
9. The occlusive implant of claim 1 , wherein the spring includes a helical portion.
10. The occlusive implant of claim 1 , wherein the spring includes a twisted portion.
11. The occlusive implant of claim 1 , wherein the spring includes a twisted portion.
12. The occlusive implant of claim 1 , wherein the spring includes a zig-zag portion.
13. An occlusive implant, comprising:
an expandable framework configured to shift between a first configuration and a second expanded configuration;
an occlusive member disposed along at least a portion of an outer surface of the expandable framework;
a hub member coupled to the expandable framework; and
a tightening member coupled to the expandable framework, the occlusive member, or both the expandable framework and the occlusive member, the tightening member including a coil member disposed along the hub member and a spring coupled to the expandable framework and the occlusive member;
wherein when rotated relative to the expandable framework, the coil member is configured to keep the occlusive member taut against an outer surface of the expandable framework in both the first configuration and the second expanded configuration.
14. The occlusive implant of claim 13 , wherein the coil member is wound around an outer surface of the hub member, wherein a first end of the coil member is coupled to the hub member and a second end of the coil member is coupled to the occlusive member.
15. The occlusive implant of claim 13 , wherein the spring includes a helical portion.
16. A method for occluding a left atrial appendage, the method comprising:
advancing an occlusive implant to the left atrial appendage, the occlusive implant including:
an expandable framework configured to shift between a first compact configuration and a second expanded configuration;
an occlusive member disposed along at least a portion of an outer surface of the expandable framework;
a hub member disposed adjacent to the occlusive member;
first and second resilient members coupled to the occlusive member, wherein the first resilient member includes a coil member disposed around the hub member, wherein the second resilient member includes a spring having a first end attached to the occlusive member and a second end coupled to the expandable framework;
expanding the expandable framework within the left atrial appendage, wherein during expanding the expandable framework within the left atrial appendage the first and second resilient members keep the occlusive member taut against an outer surface of the expandable framework.