Vascular prosthesis and methods of use
First Claim
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1. A vascular prosthesis for implantation in a body vessel having a vessel wall, the vascular prosthesis comprising:
- an alternating helical section comprising three or more helical portions, wherein a first helical portion has a direction of rotation about a longitudinal axis of the prosthesis opposite to that of a second helical portion, and a third helical portion that has a direction of rotation about the longitudinal axis the same as the first helical portion, the first and second helical portions adjoined at a first apex and the second and third helical portions adjoined at a second apex.
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Abstract
An implantable vascular prosthesis is provided for use in a wide range of applications wherein at least first and second helical sections having alternating directions of rotation are coupled to one another. The prosthesis is configured to conform to a vessel wall without substantially remodeling the vessel, and permits accurate deployment in a vessel without shifting or foreshortening.
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Citations
34 Claims
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1. A vascular prosthesis for implantation in a body vessel having a vessel wall, the vascular prosthesis comprising:
an alternating helical section comprising three or more helical portions, wherein a first helical portion has a direction of rotation about a longitudinal axis of the prosthesis opposite to that of a second helical portion, and a third helical portion that has a direction of rotation about the longitudinal axis the same as the first helical portion, the first and second helical portions adjoined at a first apex and the second and third helical portions adjoined at a second apex. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A vascular prosthesis for implantation in a body vessel having a vessel wall, the vascular prosthesis comprising:
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an alternating helical section comprising first, second and third helical portions, wherein the first and third helical portions have a direction of rotation about a longitudinal axis of the prosthesis opposite to that of the second helical portion, the first and second helical portions coupled at a first apex and the second and third helical portions coupled at a second apex, wherein all of the helical portions are constructed from struts that form a mesh having a plurality of apertures. - View Dependent Claims (21, 22, 23, 24, 25, 26)
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27. A method of deploying a vascular prosthesis, comprising:
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advancing a guidewire to a diseased vessel segment; advancing a delivery system having a vascular prosthesis loaded therein over the guidewire to the diseased vessel segment, wherein the vascular prosthesis includes an alternating helical section, the alternating helical section comprising first, second and third helical portions, wherein the first and third helical portions have a direction of rotation opposite to that of the second helical portion, and wherein the vascular prosthesis is wound onto a catheter body of the delivery system when the vascular prosthesis is in a contracted configuration; retracting an outer sheath of the delivery system proximally to expose the alternating helical section, the alternating helical section expanding to a deployed configuration; and retracting the delivery system from the vessel. - View Dependent Claims (28)
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29. A vascular prosthesis for implantation in a body vessel having a vessel wall, the vascular prosthesis comprising:
a body portion that provides a Krad/Kax ratio of at least 50. - View Dependent Claims (30, 31, 32, 33, 34)
Specification