Endovascular delivery system with an improved radiopaque marker scheme
First Claim
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1. An endovascular delivery system, comprising:
- an elongate outer tubular device having an open lumen and opposed proximal and distal ends with a medial portion therein between;
an inner tubular member disposed within said outer tubular device, said inner tubular member comprising a proximal portion comprising;
a prosthesis holder comprising a body surrounding an axial guidewire, said body comprising a first generally cylindrical marker aligned in a direction parallel to said axial guidewire and a second generally cylindrical marker aligned in a direction perpendicular to said axial guidewire, wherein said first generally cylindrical marker and said second generally cylindrical marker are spaced an equal distance from said axial guidewire; and
an outer surface, upon which a prosthesis may be secured prior to delivery;
wherein said prosthesis holder is made of a material that is not fluorescent or radiopaque;
wherein said axial guidewire is made of a material that is fluorescent or radiopaque; and
wherein said first and second generally cylindrical markers are made of a material that is fluorescent or radiopaque; and
wherein said first generally cylindrical marker and said second generally cylindrical marker are spaced at about 90°
intervals as measured around a longitudinal axis formed by said axial guidewire;
wherein a gap, when viewed from a perspective generally perpendicular to said longitudinal axis formed by said axial guidewire, between said first generally cylindrical marker and said second generally cylindrical marker is denoted by;
G=R cos θ
−
R sin θ
,where G is said gap,R is a radial separation of said first generally cylindrical marker and said second generally cylindrical marker from an outermost portion from said axial guidewire, andθ
is an angle between said first generally cylindrical marker and said second generally cylindrical marker from an axis perpendicular from the longitudinal axis formed by said axial guidewire.
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Abstract
An endovascular delivery system for an endovascular prosthesis includes a radiopaque marker system for accurate delivery of the prosthesis. The radiopaque marker system is disposed within a prosthesis or stent holder within the delivery system. The radiopaque marker system includes a plurality of radiopaque markers that provide different views rotation of the prosthesis or stent holder.
397 Citations
10 Claims
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1. An endovascular delivery system, comprising:
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an elongate outer tubular device having an open lumen and opposed proximal and distal ends with a medial portion therein between; an inner tubular member disposed within said outer tubular device, said inner tubular member comprising a proximal portion comprising; a prosthesis holder comprising a body surrounding an axial guidewire, said body comprising a first generally cylindrical marker aligned in a direction parallel to said axial guidewire and a second generally cylindrical marker aligned in a direction perpendicular to said axial guidewire, wherein said first generally cylindrical marker and said second generally cylindrical marker are spaced an equal distance from said axial guidewire; and an outer surface, upon which a prosthesis may be secured prior to delivery; wherein said prosthesis holder is made of a material that is not fluorescent or radiopaque; wherein said axial guidewire is made of a material that is fluorescent or radiopaque; and wherein said first and second generally cylindrical markers are made of a material that is fluorescent or radiopaque; and wherein said first generally cylindrical marker and said second generally cylindrical marker are spaced at about 90°
intervals as measured around a longitudinal axis formed by said axial guidewire;wherein a gap, when viewed from a perspective generally perpendicular to said longitudinal axis formed by said axial guidewire, between said first generally cylindrical marker and said second generally cylindrical marker is denoted by;
G=R cos θ
−
R sin θ
,where G is said gap, R is a radial separation of said first generally cylindrical marker and said second generally cylindrical marker from an outermost portion from said axial guidewire, and θ
is an angle between said first generally cylindrical marker and said second generally cylindrical marker from an axis perpendicular from the longitudinal axis formed by said axial guidewire. - View Dependent Claims (2, 3, 5, 6, 7, 8, 9, 10)
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4. The endovascular delivery system of 3, wherein dgap/dθ
- is about −
R when θ
is about zero.
- is about −
Specification