Endovascular stent-graft with fatigue-resistant lateral tube
First Claim
1. Apparatus comprising an endovascular stent-graft, which is configured to transition from a radially-compressed delivery state to a radially-expanded state, and which comprises:
- a plurality of structural strut members; and
a graft member, which comprises one or more substantially blood-impervious flexible sheets, and which is fixed to the structural strut members,wherein the structural strut members and the graft member are arranged so as to define, when the stent-graft is in the radially-expanded state;
a main tube, which is shaped so as to define a main lumen, anda lateral tube, which (a) has (i) a distal end and (ii) a proximal end that is joined to a lateral wall of the main tube at a junction, (b) is shaped so as to define a lateral lumen that is in fluid communication with the main lumen, and (c) defines a central longitudinal axis, andwherein, when the stent-graft is in the radially-expanded state, the structural strut members that define the lateral tube are shaped so as to define two to four non-contiguous arcuate members, which (a) are centered around the central longitudinal axis, (b) define respective arcs of a common circle, (c) collectively subtend at least 150 degrees around the central longitudinal axis, and (d) have respective pairs of arcuate-member ends, wherein all of the arcuate-member ends of all of the arcuate members are disposed at a same axial position along the lateral tube, wherein the same axial position is distal to the junction along the lateral tube.
1 Assignment
0 Petitions
Accused Products
Abstract
A stent-graft (20) comprises strut members (30) and a graft member (32), which is fixed to the strut members (30). The strut members (30) and the graft member (32) are arranged so as to define, when the stent-graft (20) is in a radially-expanded state: a main tube (40), which is shaped so as to define a main lumen (42); and a lateral tube (50), which (a) has (i) a distal end (52) and (ii) a proximal end (54) that is joined to a lateral wall (56) of the main tube (40) at a junction (60), (b) is shaped so as to define a lateral lumen (62) that is in fluid communication with the main lumen (42), and (c) defines a central longitudinal axis (64). The strut members (30) that define the lateral tube (50) are shaped so as to define two to four non-contiguous arcuate members (70), which (a) are centered around the central longitudinal axis (64), and (b) collectively subtend at least 150 degrees around the central longitudinal axis (64).
650 Citations
39 Claims
-
1. Apparatus comprising an endovascular stent-graft, which is configured to transition from a radially-compressed delivery state to a radially-expanded state, and which comprises:
-
a plurality of structural strut members; and a graft member, which comprises one or more substantially blood-impervious flexible sheets, and which is fixed to the structural strut members, wherein the structural strut members and the graft member are arranged so as to define, when the stent-graft is in the radially-expanded state; a main tube, which is shaped so as to define a main lumen, and a lateral tube, which (a) has (i) a distal end and (ii) a proximal end that is joined to a lateral wall of the main tube at a junction, (b) is shaped so as to define a lateral lumen that is in fluid communication with the main lumen, and (c) defines a central longitudinal axis, and wherein, when the stent-graft is in the radially-expanded state, the structural strut members that define the lateral tube are shaped so as to define two to four non-contiguous arcuate members, which (a) are centered around the central longitudinal axis, (b) define respective arcs of a common circle, (c) collectively subtend at least 150 degrees around the central longitudinal axis, and (d) have respective pairs of arcuate-member ends, wherein all of the arcuate-member ends of all of the arcuate members are disposed at a same axial position along the lateral tube, wherein the same axial position is distal to the junction along the lateral tube. - 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, 37, 38, 39)
-
-
36. A method for treating a subject, comprising:
-
transvascularly introducing an endovascular stent-graft into a blood vessel of the subject while the stent-graft is in a radially-compressed delivery state, which stent-graft comprises (a) a plurality of structural strut members, and (b) a graft member, which comprises one or more substantially blood-impervious flexible sheets, and which is fixed to the structural strut members; and transitioning the stent-graft to a radially-expanded state, in which; the structural strut members and the graft member are arranged so as to define (x) a main tube, which is shaped so as to define a main lumen, and (y) a lateral tube, which (a) has (i) a distal end and (ii) a proximal end that is joined to a lateral wall of the main tube at a junction, (b) is shaped so as to define a lateral lumen that is in fluid communication with the main lumen, and (c) defines a central longitudinal axis, and the structural strut members that define the lateral tube are shaped so as to define two to four non-contiguous arcuate members, which (a) are centered around the central longitudinal axis, (b) define respective arcs of a common circle, (c) collectively subtend at least 150 degrees around the central longitudinal axis, and (d) have respective pairs of arcuate-member ends, wherein all of the arcuate-member ends of all of the arcuate members are disposed at a same axial position along the lateral tube, wherein the same axial position is distal to the junction along the lateral tube.
-
Specification