Apparatus and method for the use of detachable coils in vascular aneurysms and body cavities
First Claim
1. An apparatus for use within a body lumen comprising:
- a wire;
a selectively detachable joint;
an expandable cage, said joint coupling said cage to said wire;
said expandable cage capable of assuming a collapsed and expanded configuration, said expanded configuration being self-assumed by said cage when said cage is freed of confinement,whereby, said cage expands for deployment within said body lumen.
1 Assignment
0 Petitions
Accused Products
Abstract
The retention of free coils or GDC coils within body cavities or aneurysms in the human vascular system is achieved through the use of a GDC cage. The GDC cage is comprised of an expandable cage coupled to the wire, which cage and wire are disposed within a catheter. The cage has a memory so that it normally assumes an expanded configuration when unconfined, but is capable of assuming a collapsed configuration when disposed and confined within the catheter. In the illustrated embodiments a detachable joint is provided between the cage and wire so that the cage may be selectively detached from the wire and left in place within the body lumen in its selected position in the expanded configuration. The cage may thus be placed and detached in aneurysms to retain the coils disposed therein or placed in front of aneurysm openings to prevent the escape of free coils from the aneurysm. The cage may be used as a fishing tool to capture escaped free coils in the vessel, which may have escaped from the aneurysm. In addition, RF energy may be applied to the cage so that when the cage is placed in a large body lumen, it serves as a collapsible RF antenna. As the body lumen shrinks on the cage, the cage compliantly yields while continuing to deliver RF energy to the body lumen until the desired amount of shrinkage is obtained.
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Citations
19 Claims
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1. An apparatus for use within a body lumen comprising:
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a wire; a selectively detachable joint; an expandable cage, said joint coupling said cage to said wire;
said expandable cage capable of assuming a collapsed and expanded configuration, said expanded configuration being self-assumed by said cage when said cage is freed of confinement,whereby, said cage expands for deployment within said body lumen. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. An RF probe for shrinking a body lumen comprising:
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a wire; an collapsible cage coupled to said wire, said cage capable of assuming an expanded configuration and a collapsed configuration, including a continuous deformation of configurations therebetween, said cage adapted to radiate radio frequency energy to tissue surrounding said body lumen to diathermally heat and shrink said tissue and lumen, said cage having a substantial resiliency so that when free of confinement said cage normally assumes said expanded configuration, and when confined by shrinking of said tissue and lumen, said cage assumes said collapsed configuration and is conformable to said tissue during shrinkage of said lumen.
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Specification