Endospan Ltd.

Nir Shalom Nae

Alon Shalev

Yaniv Marmur

Raphael Benary

Or Zigelboim

Ori Nissan

A stent-graft () comprises strut members () and a graft member (), which is fixed to the strut members (). The strut members () and the graft member () are arranged so as to define, when the stent-graft () is in a 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 (). The 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 (), and (b) collectively subtend at least 150 degrees around the central longitudinal axis ().

Endovascular stent-graft with fatigue-resistant lateral tube

A stent-graft () comprises strut members () and a graft member (), which is fixed to the strut members (). The strut members () and the graft member () are arranged so as to define, when the stent-graft () is in a 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 (). The 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 (); and (b) collectively subtend at least 150 degrees around the central longitudinal axis ().

A deployment system () includes an inner shaft (), removably disposed in a self-expanding stent-graft (), and shaped so as to define (a) at least one conduit therealong (), which is (i) not coaxial with the inner shaft (), and (ii) shaped so as to define at least first () and second enclosed longitudinal segments (), and (b) a restraining longitudinal portion () that is longitudinally disposed between the first () and second enclosed longitudinal segments (). The deployment system () is configured such that (a) when a restraining wire () thereof is removably disposed in the first () and second enclosed longitudinal segments (), a portion () of the restraining wire () disposed alongside the restraining longitudinal portion () prevents full radial expansion of a longitudinal portion () of the stent-graft () by physically engaging the stent-graft longitudinal portion (), and (b) when the restraining wire () has been withdrawn from at least the first enclosed longitudinal segment (), the restraining wire () does not prevent the full radial expansion of the stent-graft longitudinal portion ().

Stent system with radial-expansion locking

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

Minimization of stent-graft migration during implantation

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

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Raanana, Israel

Nir Shalom Nae