Endoprosthesis for vascular bifurcation
First Claim
1. A device for treatment of bodily conduits in an area of a bifurcation where a principal conduit separates into two secondary conduits, the device comprising segments delimiting longitudinal conduits, one of said segments being configured to be engaged through the bifurcation, and another of said segments being configured to be engaged in a secondary conduit of the bifurcation;
- at least one radially expandable first said segment having, in an expanded state, a cross section substantially greater than a cross section of one of the secondary conduits;
at least one radially expandable second said segment having a first end and a second end, said first end being capable of expanding to a greater diameter than said second end, and having in an expanded state, a truncated shape, corresponding to a shape of the bifurcation in the area of a widened transitional zone that separates the principal conduit from the secondary conduits; and
a flexible link between said first segment and said first end of said second segment, permitting said segments to be oriented in relation to one another on the basis of the orientation of the secondary conduit, which receives said first segment, in relation to said widened transitional zone, wherein said second segment has an axis not coincident with a longitudinal axis of said first segment, but oblique in relation to the axis of said first segment, in order to be adapted optimally to the anatomy of the bifurcation which is to be treated.
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Accused Products
Abstract
This invention features a device (1) comprising: at least one radially expansible segment (7, 8) with, in the expanded state, a transversal cross section substantially greater than the transversal cross section of one of the secondary ducts (3); one segment (6) with, in the expanded state, a truncated shape, corresponding to the shape of the bifurcation at the flared transition zone (11) which separates the main duct (2) from the secondary ducts (3), and a flexible link (9) between these two segments (6, 7), enabling their adjustment relative to each other, according to the orientation of the secondary duct (3) receiving the radially expandable segment (7) relative to the flared transition zone (11).
290 Citations
20 Claims
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1. A device for treatment of bodily conduits in an area of a bifurcation where a principal conduit separates into two secondary conduits, the device comprising segments delimiting longitudinal conduits, one of said segments being configured to be engaged through the bifurcation, and another of said segments being configured to be engaged in a secondary conduit of the bifurcation;
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at least one radially expandable first said segment having, in an expanded state, a cross section substantially greater than a cross section of one of the secondary conduits; at least one radially expandable second said segment having a first end and a second end, said first end being capable of expanding to a greater diameter than said second end, and having in an expanded state, a truncated shape, corresponding to a shape of the bifurcation in the area of a widened transitional zone that separates the principal conduit from the secondary conduits; and a flexible link between said first segment and said first end of said second segment, permitting said segments to be oriented in relation to one another on the basis of the orientation of the secondary conduit, which receives said first segment, in relation to said widened transitional zone, wherein said second segment has an axis not coincident with a longitudinal axis of said first segment, but oblique in relation to the axis of said first segment, in order to be adapted optimally to the anatomy of the bifurcation which is to be treated. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A device for treatment of bodily conduits in an area of bifurcation where a principal conduit separates into two secondary conduits, the device having segments delimiting longitudinal conduits, one of said segments being configured to be engaged through the bifurcation, and another of said segments being configured to be engaged in a secondary conduit of the bifurcation, said device comprising:
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at least one radially expandable first segment, which has, in an expanded state, a substantially cylindrical shape and a cross section substantially greater than a cross section of one of the secondary conduits; at least one radially expandable second segment, which has a first end and a second end, said first end being capable of expanding to a greater diameter than said second end, and which has, in an expanded state, a truncated substantially conical shape in which said first end conforms to a shape of the bifurcation in the area of a widened transitional zone that separates the principal conduit from the secondary conduits when said first segment is in a said secondary conduit; and a flexible link between said first segment and said first end of said second segment. - View Dependent Claims (9, 10)
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11. A method of treating bodily conduits in an area of bifurcation where a principal conduit separates into two secondary conduits, said method comprising:
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supporting at least one of the two secondary conduits with at least one radially expandable first segment, which has, in an expanded state, a substantially cylindrical shape and a cross section substantially greater than a cross section of said one of the secondary conduits; and supporting the principal conduit with at least one radially expandable second segment having a first end and a second end, said first end being capable of expanding to a greater diameter than said second end, and which has, in an expanded state, a truncated substantially conical shape which conforms to a shape of the bifurcation in the area of a widened transitional zone that separates the principal conduit from the secondary conduits and which is linked at said first end to said first segment, and locating said second segment so that it adapts to the shape of the widened transitional zone of the bifurcation upon expansion. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. An apparatus for treating bodily conduits in an area of bifurcation where a principal conduit separates into two secondary conduits, said apparatus comprising:
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first means for supporting at least one of the two secondary conduits with at least one radially expandable first segment, which has, in an expanded state, a substantially cylindrical shape and a cross section substantially greater than a cross section of said one of the secondary conduits; second means for supporting the principal conduit with at least one radially expandable second segment having a first end and a second end, said first end being capable of expanding to a greater diameter than said second end, and which has, in an expanded state, a truncated substantially conical shape which conforms to a shape of the bifurcation in the area of a widened transitional zone that separates the principal conduit from the secondary conduits, wherein said first end of said second segment adapts to the shape of the bifurcation upon expansion; and means for linking said first means to said first end of said second means.
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Specification