Catheter-assisted tumor treatment
An implant can include a support component, a cover component, and a valve component. The valve component can be operable to permit flow through the implant. The implant can be delivered on a catheter, with one of the ends of the implant being selectively expanded to permit temporary occlusion of a vessel while delivering a material through the valve component to a downstream target region. The other end of the implant can thereafter be released such that the implant occludes the vessel, or the implant can be removed from the vessel entirely.
1. A material delivery device, comprising:
an expandable support member having a lumen and an outflow end, the support member comprising a pair of wires collectively forming a series of loops being configured to expand from a collapsed configuration to an expanded configuration for placement in a body lumen;
a cover component, extending along the support member, defining an aperture at a distalmost loop at the outflow end of the support member; and
a valve component comprising nonmovable and movable components, the nonmovable component being coupled to the distalmost loop, the movable component being coupled to the nonmovable component via a plurality of fasteners about an entire periphery thereof to permit the movable component to move between (i) an open position, wherein the movable component is evenly spaced apart distally from a distal end of the support member to permit outflow of a material through the aperture via a gap extending about the entire periphery of the movable component, and (ii) a closed position, wherein the movable component abuts the nonmovable component to close the gap and restrict backflow of the material into the aperture.
2. A material delivery device, comprising:
an expandable support member comprising a pair of wires collectively forming a series of loops including a distalmost loop; and
a valve component attached to the distalmost loop, the valve component comprising a movable component and a nonmovable component, the nonmovable component comprising a through opening and a peripheral edge, the nonmovable component being coupled along an entirety of the peripheral edge to a perimeter of the distalmost loop, the movable component being coupled to the nonmovable component via a plurality of fasteners about the entire peripheral edge to permit the movable component to be positionable at (i) an open position in which the movable component is evenly spaced apart distally from the distalmost loop to permit outflow of a material through the opening via a gap extending about an entire periphery of the movable component, and (ii) a closed position in which the movable component is positioned against the nonmovable component to close the gap and cover the through opening.
3. The material delivery device of claim 2 , wherein the nonmovable component is attached directly to the distalmost loop.
4. The material delivery device of claim 2 , further comprising a cover component, extending along the support member.
5. The material delivery device of claim 4 , wherein the nonmovable component comprises a material separate from the cover.
6. The device of claim 2 , wherein the movable component comprises a circular plate.
7. The device of claim 2 , wherein the movable component comprises a conical member.
8. The device of claim 2 , wherein the nonmovable component comprises an annular member coupled to the support member.
9. The device of claim 8 , wherein the movable component comprises a profile that is larger than a size of the opening in the nonmovable component.
10. The device of claim 9 , wherein the profile of the movable component comprises an outer diameter that is larger than an inner diameter of the opening in the nonmovable component.
11. A material delivery device, comprising:
an expandable support member comprising a pair of wires collectively forming a series of loops including a distalmost loop defining an opening therethrough;
a cover component coupled to and extending along the support member; and
a valve component comprising a material separate from the cover component and comprising nonmovable and movable components, the nonmovable component being coupled to and movable relative to the distalmost loop, and the movable component being coupled to the nonmovable component via a plurality of fasteners about an entire periphery thereof to permit the movable component to move between (i) an open position in which the movable component is evenly spaced apart distally from the distalmost loop to permit outflow of a material through the opening via a gap extending about an entire periphery of the movable component and (ii) a closed position in which the movable component is positioned against nonmovable component to close the gap and restrict backflow of the material into the opening.
12. The device of claim 11 , wherein the nonmovable component is attached directly to the distalmost loop.
13. The device of claim 11 , wherein the valve component comprises a circular plate.
14. The device of claim 11 , wherein the valve component comprises a conical member.
15. The device of claim 11 , wherein the valve component comprises an annular member coupled to the support member.
16. The device of claim 15 , wherein the nonmovable component comprises the annular member, the movable component having a profile that is larger than a size of an opening in the nonmovable component.
17. The device of claim 16 , wherein the profile of the movable component comprises an outer diameter that is larger than an inner diameter of the opening in the nonmovable component.
18. The device of claim 1 , wherein the nonmovable component is attached directly to the distalmost loop.
19. The device of claim 1 , wherein a profile of the nonmovable component comprises a circular plate.
20. The device of claim 1 , wherein the movable component comprises a conical member.
21. The device of claim 1 , wherein the nonmovable component comprises an annular member coupled to the support member.
22. The device of claim 21 , wherein the movable component has a cross sectional profile that is larger than a size of an opening in the nonmovable component.
23. The device of claim 22 , wherein the cross-sectional profile of the movable component comprises an outer diameter that is larger than an inner diameter of the opening in the nonmovable component.
24. The device of claim 1 , wherein the plurality of fasteners comprises at least one of a hinge-type fastener, a strap-type fastener, or a material having one or more apertures extending therethrough.
25. The device of claim 1 , wherein the nonmovable component and the movable component each have matching shapes to facilitate closing of the gap and restriction of backflow of material into the aperture.
26. The device of claim 25 , wherein the shapes of the nonmovable and movable components comprise mating components such that the nonmovable and movable components assume a substantially fixed rotational orientation relative to each other in the closed position.