Detachable, varying flexibility, aneurysm neck bridge
First Claim
1. An implantable retainer bridge, deliverable via an elongate tubular delivery device, of a size and overall flexibility to safely lodge at the mouth of a vascular aneurysm, and suitable for retaining at least a vaso-occlusive device in a vascular aneurysm, comprising:
- a) a detachable joint located centrally to a plurality of array elements, and detachable from a core wire delivery element, andb) said plurality of array elements extending outwardly from and fixedly attached to said detachable joint, each of said array element comprising a wire extending away from said detachable joint and forming a loop extending from and returning back to said detachable joint.
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Accused Products
Abstract
This is a device for bridging the neck of either a wide-necked or narrow-necked aneurysm as may be found in the vasculature. It may be used to stabilize the placement of vaso-occlusive devices such as helically wound coils in the aneurysm or may be used to, at least partially, close the aneurysm neck. The vaso-occlusive devices, commonly helically wound coils, are delivered by a core wire which is linked to the coils by an electrolytically severable joint. The core wire will often be insulated. The retainer assembly itself is also attached to another delivery device, such as a core wire, and desirably is severed from the core or delivery wire by the use of another electrolytically severable joint. The inventive neck bridge typically has a number of array elements which are intended to be resident within the aneurysm after the device is deployed from the distal end of a catheter. Central to this invention is the use of array elements having differing flexibility or constituent members of the array elements, e.g., wires making up the array elements, which are of differing flexibilities. After deployment of this retainer, the aneurysm may be at least partially filled with vaso-occlusive devices such as helically wound coils.
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Citations
16 Claims
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1. An implantable retainer bridge, deliverable via an elongate tubular delivery device, of a size and overall flexibility to safely lodge at the mouth of a vascular aneurysm, and suitable for retaining at least a vaso-occlusive device in a vascular aneurysm, comprising:
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a) a detachable joint located centrally to a plurality of array elements, and detachable from a core wire delivery element, and b) said plurality of array elements extending outwardly from and fixedly attached to said detachable joint, each of said array element comprising a wire extending away from said detachable joint and forming a loop extending from and returning back to said detachable joint. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification