Vascular bifurcation prosthesis with at least one frond
First Claim
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1. A prosthesis for placement at an ostium opening from a main body lumen to a branch body lumen, the prosthesis comprising:
- a radially expansible support configured to be deployed in at least a portion of the branch body lumen or the main body lumen; and
a plurality of fronds extending axially from an end of the support, the fronds being configured to be positioned across the ostium and (a) into the main body lumen in a direction opposite to blood flow when the radially expansible support is in the branch body lumen or (b) into the branch body lumen in a direction of blood flow when the radially expansible support is in the main body lumen;
wherein the plurality of fronds have sufficient length to (1) extend into and bend and rotate and thereby expandably circumscribe at least partially the main vessel wall and reach the portion of the main vessel wall opposing the ostium when the support is implanted in the branch lumen, or (2) reach the portion of the branch vessel wall beyond the ostium when the support is implanted in the main lumen.
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Abstract
An embodiment of the invention provides a prosthesis for placement at an Os opening from a main body lumen to a branch body lumen. The prosthesis comprises a radially expansible support and at least one frond extending axially from an end of the support. The support is configured to be deployed in at least a portion of a first body lumen, which can be a branch body lumen. At least one frond is extendable into across an ostium, e.g., from the first body lumen into a second body lumen, which may be a main body lumen.
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Citations
49 Claims
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1. A prosthesis for placement at an ostium opening from a main body lumen to a branch body lumen, the prosthesis comprising:
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a radially expansible support configured to be deployed in at least a portion of the branch body lumen or the main body lumen; and a plurality of fronds extending axially from an end of the support, the fronds being configured to be positioned across the ostium and (a) into the main body lumen in a direction opposite to blood flow when the radially expansible support is in the branch body lumen or (b) into the branch body lumen in a direction of blood flow when the radially expansible support is in the main body lumen;
wherein the plurality of fronds have sufficient length to (1) extend into and bend and rotate and thereby expandably circumscribe at least partially the main vessel wall and reach the portion of the main vessel wall opposing the ostium when the support is implanted in the branch lumen, or (2) reach the portion of the branch vessel wall beyond the ostium when the support is implanted in the main lumen. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. A prosthesis for placement at an ostium opening from a larger body lumen to a smaller body lumen, the prosthesis comprising:
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a radially expansible support configured to be deployed in at least a portion of the smaller body lumen; and a plurality of fronds extending axially from an end of the support, the fronds being configured to be positioned across the ostium and into the larger body lumen, the fronds having sufficient length to be deformably deployed in at least a portion of the larger body lumen extending away from the ostium and to apply less radial force to adjacent tissue than the expanded support applies in the smaller body lumen, and being configured to extend in a same upstream or downstream direction relative to the ostium when expanded. - View Dependent Claims (39, 40)
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41. A prosthesis for placement at an ostium opening from a first body lumen to a second body lumen across an ostium between the first and second body lumens, the prosthesis comprising:
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a radially expansible support having a cylindrical body extending along a longitudinal axis between the distal end and a proximal end, at least the distal end entirely surrounding the longitudinal axis, the support configured to be deployed in at least a portion of the first body lumen; and at least one frond extending axially from either the proximal or distal end of the support, the frond configured to be positioned across the ostium and into the second body lumen, the at least one frond having sufficient length to extend into and expandably circumscribe at least partially the second vessel wall and reach the portion of the second vessel wall across the ostium when the support is implanted in the first lumen. - View Dependent Claims (42, 43, 44, 45, 46, 47, 48, 49)
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Specification