Abstract: An endovascular stent system (10) includes first and second generally tubular stents members (20, 22), which are shaped so as to define first and second interface sections (40, 42), respectively, which are securely coupleable to each other. The first interface section (40) is shaped so as to define an opening (44). The second interface section (42) is shaped so as to define a neck portion (50).

Abstract: A generally tubular stent-graft (24) has distal and proximal stent-graft ends (36, 38) and includes a generally tubular support element (30) and a covering element (32).

Abstract: An endovascular system (10) includes an endovascular implant (20) and a delivery tool (30). The implant (20) is configured to assume a radially-compressed delivery state, and a radially-expanded deployment state. The delivery tool (30) includes a proximal main delivery catheter (36), having a distal portion (46) in which the implant (20) is disposed while in the radially-compressed delivery state; and a distal restraining assembly (50), which includes a restraining-assembly tubular shaft (52) disposed distal to the proximal main delivery catheter (36). The distal restraining assembly (50) is configured to assume an engaged state, in which the distal restraining assembly (50) prevents proximal displacement of the implant (20) relative to the distal restraining assembly (50), and a disengaged state, in which the distal restraining assembly (50) allows proximal displacement of the implant (20) relative to the distal restraining assembly (50). Other embodiments are also described.

Abstract: An endovascular stent-graft system (10) includes fenestrated and crossing stent-grafts (20, 22). The fenestrated stent-graft (20) defines first and second lateral apertures (40, 42) in a central portion (34) thereof, which apertures (40, 42) face in generally radially opposing directions. The crossing stent-graft (22) includes one or more covering elements (58), which at least partially cover both end portions (44, 46) of the crossing stent-graft (22), such that a central portion (54) is at least partially uncovered.

Abstract: An endovascular stent-graft is provided that includes a generally tubular body, which (a) is configured to assume a radially-compressed delivery state and at least first and second radially-expanded deployment states, (b) is shaped so as to define a stepwise expanding portion, and (c) comprises a stent member. The stent member includes a plurality of self-expandable flexible structural stent elements, and at least one circumferential expansion element.

Abstract: An endovascular stent-graft is provided that is configured to assume a radially-compressed delivery state and a radially-expanded deployment state. The endovascular stent-graft comprises a flexible stent member; and a tubular fluid flow guide, which comprises a graft material, and which is attached to the stent member. The stent member includes a generally circumferential section that is shaped so as to define at least one fixation member having a sharp tip. When the stent-graft is in the radially-expanded deployment state, the fixation member protrudes radially outward. When the stent-graft is in the radially-compressed delivery state, at least a portion of the fixation member is convex as viewed from outside the stent-graft, such that the sharp tip points radially inward.

Abstract: A multi-component stent-graft system includes a first stent-graft, and second, third, and fourth branching stent-grafts. The first stent-graft is shaped so as to define, when in a radially-expanded state, proximal and distal superior first lateral openings facing in a first radial direction, and a distal inferior first lateral opening facing a second radial direction generally opposite the first radial direction.

Abstract: A generally tubular endovascular prosthesis (100) is configured to transition between a radially-compressed state and a radially-expanded state. The prosthesis (100) includes a first generally cylindrical structural portion (101), which has first and second ends (102, 103), and a second generally cylindrical structural portion (104), which has first and second ends (105, 106). The first end (102) of the first structural portion (101) and the first end (105) of the second structural portion (104) meet each other at a juncture (107).

Abstract: An endovascular tool is provided, which includes a longitudinal delivery shaft and a fin coupled to the delivery shaft. The fin is configured to assume a compressed state for endoluminal delivery, and an expanded state for endoluminal deployment, in which state the fin is configured to pivot around an axis of rotation. Other embodiments are also described.

Abstract: A multi-component endovascular stent-graft system (10) includes a body portion (16), which includes a plurality of stent-grafts (20), which include: (a) respective stent members (22), which are shaped, when the stent-grafts (20) are in respective radially-expanded states, so as to define respective tubes, each of which is circumferentially complete at at least one longitudinal location therealong; and (b) respective graft members (24), which circumscribe respective circumferential arcs (40) of the respective stent members (22). The circumferential arcs (40) have respective extents that are less than entire circumferences of the respective stent members (22) at least partially along respective axial lengths of the stent members (22).

Abstract: Apparatus for use with a delivery catheter, including a primary stent-graft and a flared endovascular stent-graft, which is configured to initially be positioned in the delivery catheter in a radially-compressed state, and to assume a radially-expanded state upon being deployed from the delivery catheter.

Abstract: A multi-component stent-graft system (10) comprises first, second, and third generally tubular stent-grafts (20, 22, 24), which are configured to assume radially-expanded states. The first (20) is shaped so as to define a first lateral opening (34) when radially-expanded. The second (22) is shaped so as to define a second lateral opening (44) when radially-expanded. The first and second (20, 22) are configured such that the second (22) forms a blood-impervious seal with the first (20) around the first lateral opening (34) when the second stent-graft (22) is disposed therethrough, and the first and the second (20, 22) are radially-expanded. The second and the third (22, 24) are configured such that the third (24) forms a blood-impervious seal with the second (22) around the second lateral opening (44) when the third (24) is disposed therethrough, and the second and third (22, 24) are radially-expanded. Other embodiments also described.

Abstract: An endovascular stent-graft (10) includes a generally tubular hourglass-shaped body (22), which is configured to assume a radially-compressed delivery configuration and a radially-expanded deployment configuration. The hourglass-shaped body (22) includes a flexible stent member (26), which includes a plurality of structural stent elements (28); and a tubular fluid flow guide (24), which includes a fabric (29), and is attached to the structural stent elements (28). The hourglass-shaped body (22) is shaped so as to define a narrow waist portion (32) longitudinally surrounded by and adjacent to wider first and second longitudinal portions (30, 34). The fabric (29) along the waist portion (32) is shaped so as to define at least first and second lateral apertures (36, 38). Other embodiments are also described.

Abstract: An endovascular stent-graft includes a generally tubular body configured to assume a radially-compressed delivery state and a radially-expanded deployment state. The body includes a flexible stent member, and a tubular fluid flow guide attached to the stent member. The body includes a compliance-restoration body portion extending axially along a portion of the body, and including portions of the stent member and fluid flow guide. When the body is in the radially-expanded deployment state, the compliance-restoration body portion characterized by a greatest diastolic outer radius when the body is internally pressurized by fluid having a pressure of 80 mmHg, and radially expandable to a greatest systolic outer radius when the body is internally pressurized by fluid having a pressure of 120 mmHg. The greatest systolic outer radius (RS) is at least 5% greater than the greatest diastolic outer radius.

Abstract: An endovascular sealing stent-graft is configured to initially be positioned in a delivery catheter in a radially-compressed state, and to assume a radially-expanded state upon being deployed from the delivery catheter. The stent-graft includes a structural member, which includes a plurality of structural stent elements, and which, when the stent-graft assumes the radially-expanded state, has a generally tubular shape, and is shaped so as to define at least two elongated indentations, each of which extends rostrally to a rostral end of the structural member, and is tapered in a caudal direction until the indentation converges with the generally tubular shape of the structural member, and each of which has an axial length of at least 2 cm. The stent-graft further includes a fluid flow guide, which is coupled to at least a portion of the structural member, and covers at least a portion of each of the elongated indentations.

Abstract: A multi-component endovascular stent system (10) includes an outer generally tubular stent (20), configured to assume radially-compressed and radially-expanded states, and an inner generally tubular stent (22), including a braided metal wire mesh (24) including wire, and configured to assume a radially-compressed and longitudinally-elongated state and a radially-expanded and longitudinally-contracted state. The inner stent (22) is configured to be nested in the outer stent (20), such that the inner and the outer stents (22, 20) are fixed together when the inner stent (22) is in its radially-expanded and longitudinally-contracted state and the outer stent (20) is in its radially-expanded state.

Abstract: An endovascular stent-graft (20, 120, 180, 220, 320) includes a fluid flow guide (22), and a plurality of structural stent elements (24) attached to at least a portion of the fluid flow guide (22). The stent-graft is configured to define a generally tubular foldable section (30), which comprises first, second, and third subsections (32, 34, 36). The stent-graft is configured to assume a delivery configuration and a deployment configuration. In the delivery configuration, (a) the stent-graft, including the foldable section (30), is in a radially-compressed state, and (b) the foldable section (30) is in a longitudinally-expanded state, in which state the first and the third subsections (32, 36) longitudinally surround the second subsection (34).

Abstract: An endovascular stent system (10) includes first and second generally tubular stents members (20, 22), which are shaped so as to define first and second interface sections (40, 42), respectively, which are securely coupleable to each other. The first interface section (40) is shaped so as to define an opening (44). The second interface section (42) is shaped so as to define a neck portion (50).

Abstract: A multiple-component expandable endoluminal system for treating a lesion at a bifurcation including a self expandable tubular root member having a side-looking engagement aperture, a self expandable tubular trunk member comprising a substantially blood impervious polymeric liner secured therealong; both having a radially compressed state adapted for percutaneous intraluminal delivery and a radially expanded state adapted for endoluminal support.

Abstract: Apparatus (10) is provided that includes an extra-vascular ring (12) and an endo vascular stent-graft (14). The ring (12) comprises a structural member (30), which is configured to assume an elongate hollow shape (32), which has first and second longitudinal ends (40, 42), and is suitable for placement at least partially around an aorta (20) so as to provide a generally cylindrical landing zone. The endovascular stent-graft (14) is suitable for endovascular placement inside the aorta (20) such that a portion of the stent-graft (14) is positioned against an internal wall of the aorta (20) at the landing zone provided by the structural member (30).