MODULAR VASCULAR GRAFT FOR LOW PROFILE PERCUTANEOUS DELIVERY
A hybrid modular endovascular graft wherein a main graft is sized to span at least a portion of a target vessel lesion in a large percentage of patients. Graft extensions may be secured to the main graft to extend the main graft and provide a sealing function for some applications.
1 .- 22 . (canceled)
23 . A graft assembly, comprising:
a main graft having a lumen, a proximal end and a distal end;
an anchor member comprising:
a proximal portion comprising a plurality of crowns;
a distal portion comprising a plurality of crowns; and
a strut integrally connecting the proximal portion to the distal portion;
a first stent graft extension comprising a stent and a layer of graft material, said stent graft extension having a generally tubular structure, a fluid flow lumen disposed therein, a proximal end and a distal end; and
a second stent graft extension comprising a stent and a layer of graft material, said stent graft extension having a generally tubular structure, a fluid flow lumen disposed therein, a proximal end and a distal end;
wherein in a deployed configuration, the first and second stent graft extensions are in fluid communication with the main graft lumen, and
wherein the first or second stent graft extension in a deployed configuration expands against a portion of the main graft lumen which does not comprise a self-expanding stent or a radially expandable stent that expands in a manner actuated by an outward radial force.
24 . The graft assembly of claim 23 , wherein the main graft comprises a first open end and a second open end, and wherein each first and second stent graft extension being disposed in the respective first and second open end of the graft lumen.
25 . The graft assembly of claim 24 , wherein the main graft is bifurcated forming a first leg and a second leg, wherein the first open end is at an end of the first leg and the second open end is at an end of the second leg.
26 . The graft assembly of claim 23 , wherein the main graft comprises at least one inflatable channel configured to form a rigid portion of the main graft.
27 . The graft assembly of claim 26 , wherein the main graft comprises a network of inflatable channels extending from the distal end of the main graft.
28 . The graft assembly of claim 26 , wherein the first or second stent graft extension expands against the rigid portion of the main graft lumen.
29 . The graft assembly of claim 26 , wherein both first and second stent graft extensions expand against the rigid portion of the main graft lumen.
30 . The graft assembly of claim 23 , wherein the first and second stent graft extensions comprise a stent and a layer of graft material, wherein the stent extends from a proximal end to a distal end of said graft extension.
31 . The graft assembly of claim 23 , wherein the proximal anchor member is a single piece of material.
32 . The graft assembly of claim 23 , wherein the proximal anchor member is secured to a connector portion that is at least partially disposed on the graft.
33 . The graft assembly of claim 32 , wherein the connector portion comprises a plurality of connector elements.
34 . A delivery system comprising
A catheter; and
a graft assembly, comprising:
a main graft having a lumen, a proximal end and a distal end;
an anchor member comprising:
a proximal portion comprising a plurality of crowns;
a distal portion comprising a plurality of crowns; and
a strut integrally connecting the proximal portion to the distal portion;
a first stent graft extension comprising a stent and a layer of graft material, said stent graft extension having a generally tubular structure, a fluid flow lumen disposed therein, a proximal end and a distal end; and
a second stent graft extension comprising a stent and a layer of graft material, said stent graft extension having a generally tubular structure, a fluid flow lumen disposed therein, a proximal end and a distal end;
wherein in a deployed configuration, the first and second graft extensions are in fluid communication with the main graft lumen, and
wherein the first or second stent graft extension in a deployed configuration expands against a portion of the main graft lumen which does not comprise a self-expanding stent or a radially expandable stent that expands in a manner actuated by an outward radial force.
35 . A method of deploying a graft assembly comprising:
placing a main graft having a lumen, a proximal end and a distal end;
expanding an anchor member connected to the main graft to fix the position of the main graft,
said anchor member comprising:
a proximal portion comprising a plurality of crowns;
a distal portion comprising a plurality of crowns; and
a strut integrally connecting the proximal portion to the distal portion;
deploying a first stent graft extension inside the main graft such that it is in fluid communication with the lumen of the main graft,
deploying a second stent graft extension inside the main graft such that it is in fluid communication with the lumen of the main graft,
said second stent graft extension comprising a stent and a layer of graft material, said stent graft extension having a generally tubular structure, a fluid flow lumen disposed therein, a proximal end and a distal end;
wherein deploying the first or second stent graft extension comprises expanding the stent graft extension against a portion of the main graft lumen which does not comprise a self-expanding stent or a radially expandable stent that expands in a manner actuated by an outward radial force.
36 . The method of claim 35 , wherein the first stent graft extension comprises a stent and a layer of graft material, said stent graft extension having a generally tubular structure, a fluid flow lumen disposed therein, a proximal end and a distal end.
37 . The method of claim 36 , wherein the second stent graft extension comprises a stent and a layer of graft material, said stent graft extension having a generally tubular structure, a fluid flow lumen disposed therein, a proximal end and a distal end.
38 . The method of claim 35 , wherein the main graft comprises at least one inflatable channel configured to form a rigid portion of the main graft.
39 . The method of claim 35 , wherein the main graft comprises a network of inflatable channels extending from the distal end of the main graft.
40 . The method of claim 38 , wherein the first and second stent graft extensions are expanded against the rigid portion of the main graft lumen.
41 . The method of claim 35 , wherein the main graft lumen is bifurcated into a first open end and second open end.
42 . The method of claim 41 , comprising deploying the first stent graft extension into the first open end and the second stent graft extension into the second open end.