SIDEPORT ENGAGEMENT AND SEALING MECHANISM FOR ENDOLUMINAL STENT-GRAFTS
First Claim
1. Apparatus comprising an endovascular prosthesis, which comprises:
- first and second endovascular stent-grafts, which are configured to transition from respective radially-compressed states to respective radially-expanded states, in which respective radially-expanded states an average diameter of the first stent-graft is greater than an average diameter of the second stent-graft, and which first and second stent-grafts are suitable for implantation at an aorto-iliac bifurcation of a human subject and comprise;
first and second structural members, respectively, which comprise first structural stent elements and second structural stent elements, respectively, at least respective portions of which define first and second stent bodies, which are generally tubular when the first and second stent-grafts assume the respective radially-expanded states; and
first and second fluid flow guides, respectively, which are coupled to the first and second stent bodies, respectively, so as to cover at least respective portions of the first and second stent bodies,wherein the first structural member has proximal and distal ends, and is shaped so as to define an interface portion having a distal interface end that meets a proximal end of the first stent body at a peripheral juncture,wherein, when the second stent-graft assumes its radially-expanded state, the second stent-graft is shaped so as to define an interface aperture at a location other than at ends of the second stent-graft,wherein the interface portion and the interface aperture are configured such that part of the interface portion is positionable within the interface aperture, andwherein the interface portion comprises a plurality of engagement support members disposed around a periphery of the interface portion, which engagement support members are configured to transition from an initial state to a sealing state, thereby sealingly coupling the first stent-graft to the second stent-graft when the part of the interface portion is positioned within the interface aperture.
1 Assignment
0 Petitions
Accused Products
Abstract
An endovascular prosthesis (10) includes first and second endovascular stent-grafts (20, 22), which include respective first and second stent bodies (32, 108), and respective first and second fluid flow guides (102, 109). The first stent-graft (20) is shaped to define an interface portion (103) having a distal interface end (34) that meets a proximal end (36) of the first stent body (32) at a peripheral juncture (104). The second stent-graft (22) defines an interface aperture (110), within which part of the interface portion (103) is positionable. The interface portion (103) comprises engagement support members (105) disposed around a periphery thereof, which are configured to transition from an initial state to (b) a sealing state, thereby sealingly coupling the first stent-graft (20) to the second stent-graft (22) when the part of the interface portion (103) is positioned within the interface aperture (110). Other embodiments are also described.
31 Citations
78 Claims
-
1. Apparatus comprising an endovascular prosthesis, which comprises:
-
first and second endovascular stent-grafts, which are configured to transition from respective radially-compressed states to respective radially-expanded states, in which respective radially-expanded states an average diameter of the first stent-graft is greater than an average diameter of the second stent-graft, and which first and second stent-grafts are suitable for implantation at an aorto-iliac bifurcation of a human subject and comprise; first and second structural members, respectively, which comprise first structural stent elements and second structural stent elements, respectively, at least respective portions of which define first and second stent bodies, which are generally tubular when the first and second stent-grafts assume the respective radially-expanded states; and first and second fluid flow guides, respectively, which are coupled to the first and second stent bodies, respectively, so as to cover at least respective portions of the first and second stent bodies, wherein the first structural member has proximal and distal ends, and is shaped so as to define an interface portion having a distal interface end that meets a proximal end of the first stent body at a peripheral juncture, wherein, when the second stent-graft assumes its radially-expanded state, the second stent-graft is shaped so as to define an interface aperture at a location other than at ends of the second stent-graft, wherein the interface portion and the interface aperture are configured such that part of the interface portion is positionable within the interface aperture, and wherein the interface portion comprises a plurality of engagement support members disposed around a periphery of the interface portion, which engagement support members are configured to transition from an initial state to a sealing state, thereby sealingly coupling the first stent-graft to the second stent-graft when the part of the interface portion is positioned within the interface aperture. - View Dependent Claims (5, 6, 7, 22, 23, 24, 28, 31, 33, 39, 75, 76, 77, 78)
-
-
2-4. -4. (canceled)
-
8-21. -21. (canceled)
-
25-27. -27. (canceled)
-
29-30. -30. (canceled)
-
32. (canceled)
-
34-38. -38. (canceled)
-
40. (canceled)
-
41. Apparatus comprising an endovascular stent-graft, which is configured to transition from a radially-compressed state to a radially-expanded state, and which comprises:
-
a structural member, which comprises structural stent elements, at least a portion of which defines a stent body, which is generally tubular when the stent-graft assumes the radially-expanded state; and a fluid flow guide, which is coupled to the stent body, so as to cover at least a portion of the stent body, wherein the structural member has proximal and distal ends, and is shaped so as to define an interface portion having a distal interface end that meets a proximal end of the stent body at a peripheral juncture, wherein the interface portion comprises a plurality of engagement support members disposed around a periphery of the interface portion, which engagement support members are configured to transition from an initial state to a sealing state. - View Dependent Claims (43, 45, 51, 52)
-
-
42. (canceled)
-
44. (canceled)
-
46-50. -50. (canceled)
-
53. A method comprising:
-
providing first and second endovascular stent-grafts, which are configured to transition from respective radially-compressed states to respective radially-expanded states, in which respective radially-expanded states an average diameter of the first stent-graft is greater than an average diameter of the second stent-graft, and which first and second stent-grafts include (a) first and second structural members, respectively, which comprise first structural stent elements and second structural stent elements, respectively, at least respective portions of which define first and second stent bodies, respectively, which are generally tubular when the first and second stent-grafts assume the respective radially-expanded states, and (b) first and second fluid flow guides, respectively, which are coupled to the first and second stent bodies, respectively, so as to cover at least respective portions of the first and second stent bodies, wherein the first structural member has proximal and distal ends; transvascularly introducing the second stent-graft, while in its radially-compressed state, into one or two first blood vessels of a human subject, such that the second stent-graft spans a bifurcation between (a) the one or two first blood vessels and (b) a second blood vessel; transitioning the second stent-graft to its radially-expanded state, such that an interface aperture defined by the second fluid flow guide is positioned at the bifurcation; transvascularly introducing the first stent-graft, while in its radially-compressed state, into the second blood vessel via the interface aperture; positioning, within the interface aperture, an interface portion defined by the first structural member of the first stent-graft, which interface portion has a distal interface end that meets a proximal end of the first stent body at a peripheral juncture; and transitioning the first stent-graft to its radially-expanded state, such that a plurality of engagement support members thereof, which are disposed around a periphery of the interface portion, transition from an initial state to a sealing state, thereby sealingly coupling the first stent-graft to the second stent-graft. - View Dependent Claims (54, 57, 59, 61, 63, 64, 65, 66, 67, 69, 70, 71, 72, 73, 74)
-
-
55-56. -56. (canceled)
-
58. (canceled)
-
60. (canceled)
-
62. (canceled)
-
68. (canceled)
Specification