Medical stent
First Claim
Patent Images
1. A method for supporting a wall in a junction of a blood vessel, the junction comprising a main branch, a first branch and a second branch, the method comprising:
- positioning a stent having a cylindrical wall comprising a first circumference along a length extending from a first end to a second end along a first axis, the cylinder wall further comprises a side aperture located at a fixed position with respect to the first and the second endswherein the side aperture extends along a longitudinal direction and along a latitudinal direction to form a perimeter and the cylinder wall including a first marker in-line with and directly extends from the location where the distance of the aperture along the latitudinal direction is the greatest, the first marker extending along a circumference of the cylinder wall a distance substantially perpendicular to a longitudinal axis of the cylinder wall so as to provide a rotational orientation of the cylinder wall in a two dimensional image, wherein positioning the stent places the side aperture in the junction;
expanding the cylinder wall so as to support the wall of the main branch and the first branch, whereby the side aperture allows the main branch to continue to feed both the first and the second branch; and
expanding a flexible extension extending in a substantially continuous form from a portion of the side aperture'"'"'s perimeter that flexes outward from the cylinder wall to form a protrusion that arches in a direction over the perimeter and extends into the second branch.
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Abstract
In an embodiment, a stent is provided for use in blood vessels with blockage near or in a bifurcation. The stent includes a side aperture. The stent is inserted into one of the daughter branches of the bifurcation and positioned with the use of markers. The stent is then expanded so as to support the wall of the blood vessel while allowing the blood to continue to flow to both daughter branches.
21 Citations
18 Claims
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1. A method for supporting a wall in a junction of a blood vessel, the junction comprising a main branch, a first branch and a second branch, the method comprising:
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positioning a stent having a cylindrical wall comprising a first circumference along a length extending from a first end to a second end along a first axis, the cylinder wall further comprises a side aperture located at a fixed position with respect to the first and the second ends wherein the side aperture extends along a longitudinal direction and along a latitudinal direction to form a perimeter and the cylinder wall including a first marker in-line with and directly extends from the location where the distance of the aperture along the latitudinal direction is the greatest, the first marker extending along a circumference of the cylinder wall a distance substantially perpendicular to a longitudinal axis of the cylinder wall so as to provide a rotational orientation of the cylinder wall in a two dimensional image, wherein positioning the stent places the side aperture in the junction; expanding the cylinder wall so as to support the wall of the main branch and the first branch, whereby the side aperture allows the main branch to continue to feed both the first and the second branch; and expanding a flexible extension extending in a substantially continuous form from a portion of the side aperture'"'"'s perimeter that flexes outward from the cylinder wall to form a protrusion that arches in a direction over the perimeter and extends into the second branch. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A stent configured to support a wall of a junction of a bodily vessel, the junction comprising a main branch, a first branch and a second branch, comprising:
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a cylinder wall, configured to be expanded from a first state to a second state, wherein at the first state, the cylinder wall comprises a first circumference along a length extending from a first end to a second end along a first axis, a side aperture located at a fixed position with respect to the first and the second ends having a perimeter, and a flexible extension positioned substantially within the circumference; and wherein at the second state, the cylinder wall is configured to expand to a second circumference along its length configured to support the wall of the main branch and the first branch, and the flexible extension is configured to extend from a predefined portion of the side aperture'"'"'s perimeter that, upon expansion of the stent, is configured to flex outward from the cylinder wall to form a hood-like protrusion that arches over the perimeter; and a first marker that upon expansion of the stent, is positioned in-line with and directly extending from the location where the distance of the aperture along the latitudinal direction is the greatest, wherein the marker extends a portion of a distance around the circumference of the cylinder wall in a direction extending away from the side aperture and substantially perpendicular to a longitudinal axis of the stent so as to provide a rotation orientation of the stent in a two-dimensional image. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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Specification