Non-migrating vascular prosthesis and minimally invasive placement system
First Claim
Patent Images
1. A removable repair assembly for placement in a blood vessel which comprises:
- an elongate tubular graft having an interior surface, an exterior surface, a proximal end, a distal end, and an axial length; and
an anchor assembly having a proximal end, a distal end and an axial length greater than the axial length of the graft;
the anchor assembly having, at each end, an anchor that is radially resiliently expandable from a radially contracted to a radially expanded configuration, the proximal and distal anchors being connected to each other by at least two longitudinal struts, each of the struts extending between the proximal and distal anchors;
the struts being connected to the proximal and distal anchors to cause a radial contraction force applied at one of the anchors to be transmitted to the other of the anchors, the struts serving to maintain the lengthwise positions of the proximal and distal anchors, the struts being arranged in the repair assembly such that they do not develop any radially outward expansion force independently of their connection to the proximal and distal anchors;
the end of at least one of the anchors protruding beyond its associated end of the graft and defining a connector for direct, rigid connection to a delivery device.
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Abstract
A graft assembly for securely positioning a graft at a predetermined location across an abdominal aortic aneurysm. The assembly includes a resilient self-expanding anchor that is secured to the graft. The anchor is characterized as being at least as long as the graft, and further as being adapted to be removed or repositioned at any time prior to complete deployment in the patient.
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Citations
10 Claims
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1. A removable repair assembly for placement in a blood vessel which comprises:
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an elongate tubular graft having an interior surface, an exterior surface, a proximal end, a distal end, and an axial length; and an anchor assembly having a proximal end, a distal end and an axial length greater than the axial length of the graft; the anchor assembly having, at each end, an anchor that is radially resiliently expandable from a radially contracted to a radially expanded configuration, the proximal and distal anchors being connected to each other by at least two longitudinal struts, each of the struts extending between the proximal and distal anchors; the struts being connected to the proximal and distal anchors to cause a radial contraction force applied at one of the anchors to be transmitted to the other of the anchors, the struts serving to maintain the lengthwise positions of the proximal and distal anchors, the struts being arranged in the repair assembly such that they do not develop any radially outward expansion force independently of their connection to the proximal and distal anchors; the end of at least one of the anchors protruding beyond its associated end of the graft and defining a connector for direct, rigid connection to a delivery device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An abdominal aortic repair device comprising:
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an elongate tubular graft adapted to be positioned within a blood vessel, the graft having a proximal end, a distal end, and an axial length; a self-expanding anchor assembly secured to the graft, the anchor assembly being adapted to inhibit migration of the graft when positioned at a desired location in a blood vessel, the anchor assembly having a proximal end, a distal end and an axial length greater than the axial length of the graft, at least the proximal end and the distal end of the anchor being resiliently expandable and connected to each other by at least two longitudinal segments that extend between the proximal and distal ends of the anchor, and each of the longitudinal segments being constructed and arranged to transmit a radial compression force through the longitudinal segments from one end of the anchor assembly to the other end of the anchor assembly, the proximal end of the anchor assembly being accessible and defining a connector for direct rigid connection to a delivery device.
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Specification