Endoluminal device retrieval devices and related systems and methods
A retrieval device includes an elongate element having a collapsible retriever at its distal end, wherein the collapsible retriever can be axially delivered over or through an introducer to the site of an object to be retrieved, e.g., a failed endoluminal device. When the retrieval device reaches the failed endoluminal device, the endoluminal device and the retrieval device are withdrawn together through the introducer. The introducer is configured to force the retrieval device down over the endoluminal device reducing the french size of the spent endoluminal device upon extraction. The collapsible retriever can be configured to side-mount a delivery element, or it can be integrated into a delivery system.
1. A retrieval device to be side-mounted on an elongate member, the device comprising:
a retriever having a proximal end and a distal end and at least partially defining a tapered lumen therethrough; and
a circumferential member positioned at the distal end of the retriever and operable to radially compress the distal end of the retriever,
wherein the retriever comprises an interlocking section extending along at least a portion of the retriever between the proximal end to the distal end,
wherein the interlocking section comprises a first side edge and a second side edge, and wherein each side edge has a structural feature that facilitates at least partially coupling the first side edge to the second side edge.
2. The device of claim 1 , wherein the interlocking section comprises a tongue and groove interface.
3. The device of claim 1 , wherein the retriever comprises a wall having an interior face and an exterior face, the interior face at least partially defining the tapered lumen.
4. The device of claim 3 , wherein the retriever has a cross-sectional area at the distal end and the cross-sectional area increases upon application of a compressive force applied along an axis formed between the proximal end and the distal end.
5. The device of claim 4 , wherein the wall comprises a lattice element defining the tapered lumen and configured to radially expand upon application of a compressive force applied along the axis formed between the proximal end and the distal end.
6. The device of claim 4 , wherein the wall comprises a film material, the film material overlaying at least a portion of the lattice element.
7. The device of claim 3 , wherein the wall comprises at least two layers.
8. The device of claim 3 , wherein the exterior face has a low friction surface relative to a surface of the interior face.
9. The device of claim 1 , further comprising an elongate element having a proximal end and a distal end and a longitudinal axis, wherein the distal end of the elongate element is coupled to the proximal end of the retriever.
10. A retrieval device to be side mounted on an elongate member, the device comprising:
a collapsible retriever having a proximal end and a distal end and a first side edge opposite from a second side edge along at least a portion of the collapsible retriever between the proximal end and the distal end, and
a circumferential member positioned at the distal end of the collapsible retriever and operable to radially compress the distal end of the collapsible retriever,
wherein the collapsible retriever has a coupled configuration and an uncoupled configuration, wherein the first edge couples to the second edge to form the coupled configuration, and wherein the collapsible retriever, in the coupled configuration, defines a tapered lumen.
11. The device of claim 10 , wherein the collapsible retriever comprises a wall having an interior face and an exterior face, the interior face at least partially defining the tapered lumen.
12. The device of claim 11 , wherein the collapsible retriever has a cross-sectional area at the distal end and the cross-sectional area increases upon application of a compressive force applied along an axis formed between the proximal end and the distal end.
13. The device of claim 12 , wherein the wall comprises a lattice element defining the tapered lumen and configured to radially expand upon application of a compressive force applied along the axis formed between the proximal end and the distal end.
14. The device of claim 13 , wherein the wall comprises a film material, the film material overlaying at least a portion of the lattice element.
15. The device of claim 11 , wherein the wall comprises at least two layers.
16. The device of claim 11 , wherein the exterior face has a low friction surface relative to a surface of the interior face.
17. The device of claim 10 , further comprising an elongate element having a proximal end and a distal end and a longitudinal axis, wherein the distal end is coupled to the proximal end of the collapsible retriever.
18. The device of claim 10 , wherein the first side edge couples to the second side edge to form an interlocking section.
19. The device of claim 18 , wherein the interlocking section comprises a tongue and groove interface.
20. The device of claim 10 , wherein the collapsible retriever comprises a circumferential member coupled to an axial member, wherein the circumferential member compresses the collapsible retriever upon rotation or axial movement of the axial member.
21. The device of claim 1 , further comprising an axial member operable to be rotated to cause radial compression of the circumferential member.
22. The device of claim 1 , wherein the circumferential member is a filament.
23. The device of claim 5 , wherein the circumferential member is woven through the lattice element.
24. The device of claim 1 , wherein the circumferential member is operable to be tensioned to radially compress the retriever.