Prosthetic repair of body passages
First Claim
1. A device for retaining a prosthesis in a body passage comprising an annular, resilient element with an undeformed diameter greater than the diameter of said body passage.
1 Assignment
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Accused Products
Abstract
A prosthesis that resiliently engages a body passage includes an annular clamping ring which may be folded along a diametric axis for insertion into the body passage. The clamping ring is adapted to resiliently spring outwardly, once in position inside the body passage, and to be continually resiliently biased against the interior surface of the body passage. One or more of the clamping rings may be attached to opposed ends of a tubular graft. The rings and connected graft may be positioned in the body passage using a applicator which selectively permits expansion and/or in some embodiments contraction of the annular ring in position within a body passage. Alternatively a retaining member may be used to retain the annular ring in a compressed condition until it is in a desired position within a body passage. Among other potential uses, the present invention may be useful as a vascular stent for treating abdominal aortic aneurysms.
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Citations
51 Claims
- 1. A device for retaining a prosthesis in a body passage comprising an annular, resilient element with an undeformed diameter greater than the diameter of said body passage.
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12. A prosthesis for insertion into a body passage comprising an annular resilient spring element and a flexible, tubular graft attached to said element, said element having an undeformed diameter greater than the diameter of said graft.
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21. A vascular prosthesis for repairing a diseased first vessel comprising:
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a folded, resilient, annular ring having a first pair of loops extending in one direction, and a second pair of loops extending in the opposite direction, said first and second pairs of loops connected together, and a tubular graft connected to said ring, said graft arranged to extend along the length of said first vessel, said first pair of loops arranged to extend at least partially past the point where a second vessel intersects said first vessel, one of said second pair of loops defining an opening to permit communication between said first and second vessels, at least partially past said prosthesis. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 30, 31)
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29. An apparatus for securing a prosthesis to an internal surface of a body passage comprising:
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a resiliently deformable annular ring;
a tubular graft having a pair of opposed free ends, one of said free ends attached to said annular ring; and
a device adapted to enable said ring to be remotely compressed and expanded.
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32. A prosthesis for insertion within a body passage comprising:
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a first prosthesis section including a resiliently deformable annular spring element and a tubular graft, said tubular graft having a pair of free ends, said annular spring element connected to one of said free ends; and
a second prosthesis section arranged to engage the interior of said first prosthesis section in common axial alignment therewith, said second prosthesis section including a resiliently deformable annular spring element adapted to engage an internal surface of said tubular graft of said first prosthesis section so as to adjust the resulting length of the prosthesis. - View Dependent Claims (33, 34, 35, 36, 38, 39, 40)
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37. A method for securing a prosthetic device in a body passage comprising the steps of:
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folding a resilient annular ring to assume a first configuration having a cross-sectional area smaller than the cross-sectional area of said undeformed ring;
positioning said ring at a desired position within a body passage; and
allowing said ring to resiliently deform to a second configuration having a larger cross-sectional area than in said first configuration, but still having a cross-sectional area smaller then that of said undeformed ring.
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41. A method for repairing a diseased vessel comprising the steps of:
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folding an annular ring around its diametric axis to assume a smaller cross-sectional configuration;
forming a pair loops extending away from said axis; and
arranging said ring in said vessel with said diametric axis proximate to an intersecting vessel such that said loops extend at least partially past the intersecting vessel without occluding said intersecting vessel. - View Dependent Claims (42)
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43. A method of securing a prosthetic device inside a body passage comprising the steps of:
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deforming an annular resilient spring by folding said spring along its diametric axis;
positioning said spring inside a body passage and causing said spring to expand resiliently against said body passage; and
causing said spring to continuously press outwardly against said body passage. - View Dependent Claims (44, 45, 46, 49)
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47. A prosthetic device comprising:
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a prosthetic heart valve;
a flexible tubular sleeve having a first end connectable to said valve and a second end; and
a deformable, resilient annular ring connected to said second end and arranged to connect said graft to the interior surface of a portion of the ascending aorta.
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48. A prosthesis for insertion into a body passage comprising at least two annular resilient spring elements and a flexible tubular graft attached to each of said elements and a rigid member longitudinally connecting said elements, said member being less flexible than said graft.
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50. A method for inserting a prosthesis into a body passage, comprising the steps of:
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inserting a pair of tubular prostheses together into a body passage; and
telescopically adjusting the position of one of said prostheses within the other of said prostheses. - View Dependent Claims (51)
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Specification