US Pat. No. 9,233,015

ENDOVASCULAR DELIVERY SYSTEM WITH AN IMPROVED RADIOPAQUE MARKER SCHEME

TRIVASCULAR, INC., Santa...

1. An endovascular delivery system, comprising:
an elongate outer tubular device having an open lumen and opposed proximal and distal ends with a medial portion therein between;
an inner tubular member disposed within said outer tubular device, said inner tubular member comprising prosthesis holder
comprising:

an axial guidewire extending through said proximal portion of said inner tubular member;
a body surrounding said axial guidewire; and
an outer surface, upon which a prosthesis may be secured prior to delivery;
wherein said body comprises:
at least three generally cylindrical markers aligned in a direction parallel to said axial guidewire and each spaced an equal
distance from said axial guidewire with one of the cylindrical markers being a middle cylindrical marker and another two of
the cylindrical markers being side cylindrical markers; and

at least two perpendicular markers, wherein said perpendicular markers are disposed at a perpendicular angle to the axial
guidewire;

wherein each of said generally cylindrical markers are spaced at about 90° intervals as measured around the axis formed by
the axial guidewire;

wherein, upon rotation of the proximal portion to a first position, only the middle cylindrical marker and the two perpendicular
markers are visible and, upon rotation of the proximal portion to a second position, only the two side cylindrical markers
are visible.

US Pat. No. 9,066,828

ENDOVASCULAR DELIVERY SYSTEM WITH FLEXIBLE AND TORQUEABLE HYPOTUBE

TRIVASCULAR, INC., Santa...

1. An endovascular delivery system, comprising:
an elongate outer tubular sheath having an open lumen and opposed proximal and distal ends with a medial portion therein between;
an elongate inner metallic hypotube having a tubular wall with an open lumen and opposed proximal and distal ends with a medial
portion therein between, the hypotube having a longitudinal length greater than a longitudinal length of the outer tubular
sheath, the hypotube being slidably disposed within the open lumen of the outer tubular sheath;

the distal end of the outer tubular sheath being slidably disposed past and beyond the distal end of the hypotube to define
an endovascular prosthesis delivery state and slidably retractable to the medial portion of the hypotube to define an endovascular
prosthesis unsheathed state;

wherein the hypotube further comprises:
a first flexible portion disposed from about the distal end of the hypotube to about the medial portion of the hypotube;
a second portion disposed from about the medial portion of the hypotube to about the proximal end of the hypotube;
the first flexible portion of the hypotube comprising a plurality of slots extending through the tubular wall of the hypotube,
said slots having a circumferential arc about the tubular wall from about 150° to about 300°;

wherein adjacent slots are axially offset from one and the other from about 30° to about 60°;
wherein at least one end of the hypotube includes a hole for securement proximal to that end;
wherein the hypotube comprises an exterior surface having a surface finish of less than or equal to about 32 microinches RMS.

US Pat. No. 9,050,754

ENDOVASCULAR GRAFT JOINT AND METHOD FOR MANUFACTURE

TRIVASCULAR, INC., Santa...

1. An endovascular graft comprising:
a tubular graft body having a proximal end and an opposed distal end and further having a longitudinal axis and a circumferential
axis, said tubular graft body comprising a plurality of layers of fusible materials;

wherein said plurality of layers of fusible materials comprise:
(i) a base layer of expanded polytetrafluoroethylene having a node and fibril structure with the fibrils oriented primarily
in a uniaxial direction substantially aligned with the longitudinal axis or substantially aligned with the circumferential
axis; and

(ii) additional layers of polytetrafluoroethylene disposed about said base layer;
wherein said graft body comprises an inflatable channel or cuff comprising at least two seams of fusible material among said
plurality of layers of fusible materials to define the inflatable channel or cuff disposed between at least two of said plurality
of layers of fusible material;

a transversely oriented member disposed near the proximal end of the tubular graft body; and
a joint disposed about the transversely oriented member, the joint comprising at least one flap of at least one of the additional
layers of polytetrafluoroethylene folded back over the tubular graft body and secured thereto to form a loop portion about
the transversely oriented member.

US Pat. No. 9,144,486

FENESTRATED INFLATABLE GRAFT

TRIVASCULAR, INC., Santa...

1. An endovascular graft comprising:
a tubular structure having a first end and a second end, said tubular structure having a wall which defines a lumen between
said first end and said second end;

a fenestration located between said first end and said second end to extend through said wall of said tubular structure; and
a sealing ring circumferentially disposed within or onto said tubular structure, said sealing ring being adjacent to said
fenestration;

wherein said sealing ring circumferentially disposed within or onto said tubular structure defines a circumferential sealing
ring;

said endovascular graft further comprising an arcuate intermediate sealing ring circumferentially disposed within or on said
tubular structure, said intermediate sealing ring having a longitudinal plane which has an axial position relative to said
tubular structure such that said axial position of said longitudinal plane is substantially the same as an axial position
of a center of said fenestration relative to said tubular structure, said intermediate sealing ring having a first end and
a second end, said intermediate sealing ring having a circumferential gap between said first end and said second end of said
intermediate sealing ring, said intermediate sealing ring being circumferentially positioned relative to said fenestration
such that said fenestration is within said gap;

wherein said intermediate sealing ring is inflatable;
said endovascular graft further comprising an inflatable lateral sealing ring disposed within or on said tubular structure
in coaxial relation to said fenestration such that said fenestration is encircled by said lateral sealing ring; and

said lateral and said intermediate sealing ring being connected to one another for communication therebetween such that inflation
of one of said lateral sealing ring and said intermediate sealing ring provides inflation of the other of said lateral sealing
ring and said intermediate sealing ring.

US Pat. No. 9,192,462

LOW PROFILE STENT GRAFT AND DELIVERY SYSTEM

TriVascular, Inc., Santa...

1. A device for implantation into a body lumen having a low profile implantation diameter, comprising:
an expandable stent member having apices at at least one end with an eyelet disposed at each of the apices, wherein said stent
member is capable of securing said device into a body lumen;

a plurality of attachment tethers looped through each of the eyelets;
a generally tubular graft having a lumen extending therethrough for the flow of bodily fluid, said graft comprising a first
open end, a second open end, and a graft wall having an interior surface and an opposed exterior surface, said graft wall
comprising a plurality of layers with internal layers disposed between the interior surface and the opposed exterior surface;
wherein the eyelets, the apices having the eyelets and the plurality of attachment tethers are disposed over a portion of
the exterior surface of the graft near the first open end of the graft; and

an attachment flap;
wherein material from at least one of the internal layers forming the graft wall is extended and folded over at said first
end to define said attachment flap which covers the eyelets, covers the apices having the eyelets and covers at least a portion
of the plurality of attachment tethers; and

wherein the attachment flap is secured over the portion of the exterior surface of the graft near the first open end and over
the at least portion of the plurality of attachment tethers to define a plurality of attachment sites thereat.

US Pat. No. 10,034,787

ENDOVASCULAR DELIVERY SYSTEM WITH AN IMPROVED RADIOPAQUE MARKER SCHEME

TriVascular, Inc., Santa...

1. An endovascular delivery system, comprising:an elongate outer tubular device having an open lumen and opposed proximal and distal ends with a medial portion therein between;
an inner tubular member disposed within said outer tubular device, said inner tubular member comprising a proximal portion comprising:
a prosthesis holder comprising a body surrounding an axial guidewire, said body comprising a first generally cylindrical marker aligned in a direction parallel to said axial guidewire and a second generally cylindrical marker aligned in a direction perpendicular to said axial guidewire, wherein said first generally cylindrical marker and said second generally cylindrical marker are spaced an equal distance from said axial guidewire; and
an outer surface, upon which a prosthesis may be secured prior to delivery;
wherein said prosthesis holder is made of a material that is not fluorescent or radiopaque;
wherein said axial guidewire is made of a material that is fluorescent or radiopaque; and
wherein said first and second generally cylindrical markers are made of a material that is fluorescent or radiopaque; and
wherein said first generally cylindrical marker and said second generally cylindrical marker are spaced at about 90° intervals as measured around a longitudinal axis formed by said axial guidewire;
wherein a gap, when viewed from a perspective generally perpendicular to said longitudinal axis formed by said axial guidewire, between said first generally cylindrical marker and said second generally cylindrical marker is denoted by:
G=R cos ??R sin ?,
where G is said gap,
R is a radial separation of said first generally cylindrical marker and said second generally cylindrical marker from an outermost portion from said axial guidewire, and
? is an angle between said first generally cylindrical marker and said second generally cylindrical marker from an axis perpendicular from the longitudinal axis formed by said axial guidewire.

US Pat. No. 9,351,858

ENDOVASCULAR GRAFT JOINT AND METHOD FOR MANUFACTURE

TriVascular, Inc., Santa...

1. An endovascular graft comprising:
a tubular graft body having a proximal end and an opposed distal end and further having a longitudinal axis and a circumferential
axis, said tubular graft body comprising a plurality of layers of fusible materials;

wherein said plurality of layers of fusible materials comprise:
(i) a base layer of polytetrafluoroethylene having a preferential tensile strength in a uniaxial direction substantially aligned
with the longitudinal axis or substantially aligned with the circumferential axis; and

(ii) additional layers of polytetrafluoroethylene disposed about said base layer;
wherein said graft body comprises an inflatable channel or cuff comprising at least two seams of fusible material among said
plurality of layers of fusible materials to define the inflatable channel or cuff disposed between at least two of said plurality
of layers of fusible material;

a polymeric connector member disposed near the proximal end of the tubular graft body; and
a joint disposed about the polymeric connector member, the joint comprising at least one flap of at least one of the additional
layers of polytetrafluoroethylene folded back over the tubular graft body and secured thereto to form a loop portion about
the polymeric connector member.

US Pat. No. 9,446,553

PTFE LAYERS AND METHODS OF MANUFACTURING

TriVascular, Inc., Santa...

1. A method of processing PTFE, comprising:
extruding a compounded PTFE resin through an extruder in a machine direction to form a PTFE ribbon extrudate;
calendering the PTFE ribbon extrudate in the machine direction to form a layer of PTFE having an upper surface, a lower surface
and a longitudinal length in a machine direction of an extruder used to produce the layer of PTFE and having a width in a
cross machine or transverse direction;

applying a liquid stretching agent in an excess amount to at least a portion of the upper surface or the lower surface of
the layer of PTFE;

stretching the layer of PTFE in the transverse direction to the machine direction; and
maintaining the excess amount of the liquid stretching agent on the at least portion of the upper or the lower surface of
the layer of PTFE during at least part of the stretching to fully saturate the layer of PTFE throughout its thickness with
the liquid stretching agent during the stretching to form a stretched layer of PTFE that has:

(i) a closed cell microstructure with a plurality of interconnected high density regions of PTFE having no distinct fibrils
interconnecting adjacent nodes when viewed at a magnification of 20,000 under a scanning electron microscope; and

(ii) a thickness from 0.00005 inch to 0.005 inch;
wherein the stretching is at a rate from 10 percent per second to 100 percent per second;
wherein the stretching is performed at a stretch ratio from 2:1 to 20:1; and
wherein stretching of the layer of PTFE is performed at a temperature of 80° F. to 100° F.

US Pat. No. 9,655,754

SYSTEMS AND METHODS FOR GUIDEWIRE CROSSOVER FOR BIFURCATED PROSTHESES

TriVascular, Inc., Santa...

1. An endovascular delivery system, comprising:
a bifurcated prosthesis comprising a main tubular body having an open end and opposed ipsilateral and contralateral legs defining
a graft wall therein between, said ipsilateral and contralateral legs having open ends;

an elongate outer tubular sheath having an open lumen and opposed proximal and distal ends with a medial portion therein between,
the proximal end of the outer tubular sheath securably disposed to a first handle at a handle assembly;

an elongate inner tubular member having a tubular wall with an open lumen and opposed proximal and distal ends with a proximal
portion near the proximal end, a distal portion near the distal end and a medial portion therein between, the inner tubular
member having a longitudinal length greater than a longitudinal length of the outer tubular sheath, the inner tubular member
being slidably disposed within the open lumen of the outer tubular sheath, the proximal end of the inner tubular member securably
disposed to a second handle at the handle assembly;

wherein the bifurcated prosthesis is disposed at the distal portion of the elongate inner tubular member; and
wherein the distal end of the outer tubular sheath being slidably disposed past and beyond the distal end of the inner tubular
member to define a prosthesis delivery state and slidably retractable to the medial portion of the inner tubular member to
define a prosthesis unsheathed state;

an elongate guidewire slidably disposed within the outer tubular sheath and extending from the handle assembly, through the
ipsilateral leg of the prosthesis and through the main tubular body of the prosthesis in the prosthesis delivery state;

an elongate crossover guidewire slidably disposed within the outer tubular sheath and having a proximal portion extending
from the handle assembly, a medial portion extending through the ipsilateral leg of the prosthesis and a distal portion extending
through the contralateral leg of the main tubular body of the prosthesis in the prosthesis delivery state; and

a crossover guidewire member having an open lumen extending over at least a portion of the medial portion of the elongate
crossover guidewire and over at least a portion of the distal portion of the elongate crossover guidewire;

wherein in the prosthesis delivery state the crossover guidewire member extends through the ipsilateral leg of the prosthesis
and through the contralateral leg of the prosthesis;

wherein a distal portion of the crossover guidewire member is releasably secured within the endovascular delivery system;
wherein a medial portion of the crossover guidewire member is a tubular member and at least a portion of the distal portion
of the crossover guidewire member near the medial portion of the crossover guidewire member is a tubular member;

wherein the distal portion of the crossover guidewire member distal from the medial portion of the crossover guidewire member
is a non-tubular member portion;

whereby the distal portion of the elongate crossover guidewire is engageable with a catheter to facilitate delivery of a contralateral
graft extension within a portion of the contralateral leg of the main tubular body of the prosthesis in the prosthesis unsheathed
state upon proximally retracting the elongate crossover guidewire.

US Pat. No. 9,463,101

LOW PROFILE STENT AND DELIVERY SYSTEM

TriVascular, Inc., Santa...

1. A device for implantation into a body lumen, comprising:
an expandable stent having at least one end and apices thereat;
a plurality of attachment tethers looped around at least one of the apices; and
a generally tubular graft having a lumen extending therethrough for the flow of bodily fluid, said graft comprising a first
open end, a second open end, and a graft wall having an interior surface and an opposed exterior surface, said graft wall
comprising a plurality of layers with internal layers disposed between the interior surface and the opposed exterior surface;
wherein the at least one of the apices and the plurality of attachment tethers are disposed over a portion of the exterior
surface of the graft near the first open end of the graft;

wherein material from at least one of the internal layers forming the graft wall is folded over at said first end (a) to cover
at least a portion of at least one of the apices, (b) to cover at least a portion of one of the plurality of attachment tethers,
and (c) such that the material is secured over the portion of the exterior surface of the graft near the first open end and
over the at least portion of the plurality of attachment tethers to define a plurality of attachment sites thereat.

US Pat. No. 9,132,025

BIFURCATED ENDOVASCULAR PROSTHESIS HAVING TETHERED CONTRALATERAL LEG

TRIVASCULAR, INC., Santa...

1. An endovascular delivery system, comprising:
a bifurcated prosthesis comprising:
a main tubular body having an open end and opposed ipsilateral and contralateral legs defining a graft wall therein between,
said ipsilateral and contralateral legs having open ends;

said ipsilateral leg comprising an ipsilateral tab extending from the open end of said ipsilateral leg, said tab comprising
at least two holes;

an elongate guidewire having at least two outwardly projecting members, said outwardly projecting members being sized to at
least partially fit within the at least one of said at least two holes of said ipsilateral tab;

a release wire slidable disposed within the at least two outwardly projecting members of the elongate guidewire and within
one of the at least two holes of said ipsilateral tab; and

a tether having opposed contralateral and ipsilateral ends, said contralateral end of the tether being securably disposed
at said open end of said contralateral leg, said ipsilateral end of the tether having a hole, said release wire being slidably
disposed through the hole of the tether to so engage the tether;

wherein withdrawal of the release wire releases the ipsilateral tab and the tether from the elongate guidewire.

US Pat. No. 9,498,363

DELIVERY CATHETER FOR ENDOVASCULAR DEVICE

TRIVASCULAR, INC., Santa...

1. A delivery system for an inflatable endoluminal prosthesis, comprising:
a delivery catheter comprising an elongate shaft including a proximal section and a fill tube, the fill tube including a fill
tube lumen extending axially therein;

an endoluminal prosthesis releasably secured to the proximal section of the delivery catheter, the endoluminal prosthesis
including an inflatable portion having an interior volume in fluid communication with an inflation port, wherein a proximal
end of the fill tube is releasably coupled to the inflation port; and

a fill tube retention mechanism that releasably secures the fill tube lumen in fluid communication to the inflation port,
comprising:

a tab disposed at a distal end of the endoluminal prosthesis in a substantially fixed relation to the inflation port and which
includes an aperture that is separated from the inflation port by a predetermined distance,

a fitting secured to a proximal portion of the fill tube and which extends laterally from the fill tube, at least a portion
of the fitting being sized to pass through the aperture such that the aperture closely fits an outer transverse surface of
the fitting, the fitting being disposed a distance from a proximal end of the fill tube such that the fill tube may be engaged
with the inflation port while the fitting is disposed within the aperture, the fitting having a passage therethrough, and

a release wire having an outer transverse dimension and axial bending stiffness that allows the release wire to pass through
the passage and mechanically capture the tab to the fitting such that a portion of the tab is disposed between the release
wire and the fill tube, and wherein the release wire may be retracted from the passage to release the portion of the tab.

US Pat. No. 9,956,101

INTERNAL ILIAC PRESERVATION DEVICES AND METHODS

TriVascular, Inc., Santa...

1. A system for deploying a stent-graft at a branched artery comprising:a catheter having a distal catheter portion and a proximal catheter portion;
a handle disposed at the proximal catheter portion;
a distal tip disposed at the distal catheter portion;
a first guidewire having a proximal portion extending from the handle, a distal portion extendable through the distal tip and a medial portion disposed between the proximal portion and the distal portion;
a first outer sheath slidably disposed over the distal catheter portion;
an integrated delivery system disposed within the first outer sheath at the distal catheter portion, the integrated second delivery system comprising:
a second guidewire having a proximal portion extending from the handle, a distal portion having a distal end portion and a medial portion disposed between the proximal portion and the distal portion, the medial portion being slidably disposed over the first guidewire;
an expandable stent-graft disposed over a lumen of the second guidewire, the lumen of the second guidewire having a distal portion associated with the distal portion of the second guidewire and an opposed proximal portion; and
a second outer sheath disposed over the expandable stent-graft and disposed over the lumen of the second guidewire; and
a slidable connector slidably disposed over the medial portion of the first guidewire;
a second distal tip disposed at the distal portion of the lumen of the second guidewire; and
a thread having a distal portion associated with the second distal tip, the thread has a proximal portion accessible at the proximal catheter portion;
wherein the second guidewire is slidably engaged with the slidable connector to permit movement of the integrated second delivery system along the first guidewire when the first outer sheath is retracted from the distal catheter portion; and
whereby retraction of the thread at the proximal catheter portion moves the second distal tip in a direction towards the second outer sheath.

US Pat. No. 10,201,350

INFLATABLE IMPLANT

TriVascular, Inc., Santa...

1. An inflatable, expandable implant suitable for implantation in a vascular aneurysm within a human body, comprising:a bladder comprising a bladder wall consisting essentially of non-elastic material; and
a polymerizable filler material comprising a poly(ethylene glycol) material;
wherein said bladder wall defines a volume for enclosing of the polymerizable filler material therein between,
wherein the polymerizable filler material is adapted to cure to a viscoelastic solid or a viscoelastic liquid within the bladder volume,
wherein said bladder wall has at least one bladder wall opening for introduction of the polymerizable filler material, and at least one closure for said at least one bladder wall opening for maintaining the polymerizable filler material within the volume after introduction of the polymerizable filler material into the volume,
wherein the bladder wall is expandable to an expanded shape upon introduction of the polymerizable filler material into the volume,
wherein at least a portion of the bladder wall is in apposition, on a side wall opposite the volume, to an elastic woven fabric layer,
wherein said woven layer is not disposed within said bladder volume, and
wherein the bladder wall maintains its expanded shape after the polymerizable filler material is cured in situ to provide a supporting structure for the vascular aneurysm.

US Pat. No. 10,159,557

MODULAR VASCULAR GRAFT FOR LOW PROFILE PERCUTANEOUS DELIVERY

TRIVASCULAR, INC., Santa...

1. A modular endovascular graft assembly, comprising:a bifurcated main graft member formed from a supple graft material including a main fluid flow lumen therein, an ipsilateral leg with an ipsilateral fluid flow lumen in communication with the main fluid flow lumen, a contralateral leg with a contralateral fluid flow lumen in communication with the main fluid flow lumen and a network of inflatable channels disposed on the main graft member including the ipsilateral and contralateral legs which is configured to accept a hardenable fill material to provide structural rigidity to the main graft member when the network of inflatable channels are in an inflated state and which includes at least one inflatable cuff disposed on a proximal portion of the main graft member configured to seal against an inside surface of a patient's vessel;
a proximal anchor member which is formed from a single piece of material, which is disposed at a proximal end of the main graft member, which is secured to the main graft member and which includes a self-expanding proximal stent portion, a self-expanding distal stent portion, and struts that are disposed between adjacent crowns of respective proximal stent portions and distal stent portions, said struts including a cross sectional area that is the same as or greater than a cross sectional area of either proximal stent portions or distal stent portions adjacent each strut and configured to avoid stress and strain concentrations at junctions between the self-expanding distal stent portion and the self-expanding proximal stent portion;
at least one ipsilateral graft extension including a fluid flow lumen disposed therein with the fluid flow lumen of the graft extension sealed to and in fluid communication with the fluid flow lumen of the ipsilateral leg of the main graft member; and
at least one contralateral graft extension including a fluid flow lumen disposed therein with the fluid flow lumen of the graft extension sealed to and in fluid communication with the fluid flow lumen of the contralateral leg of the main graft member.

US Pat. No. 10,195,060

BIFURCATED ENDOVASCULAR PROSTHESIS HAVING TETHERED CONTRALATERAL LEG

TriVascular, Inc., Santa...

1. An endovascular delivery system,comprising: a bifurcated prosthesis comprising:
a main tubular body having an open end and opposed ipsilateral and contralateral legs defining a graft wall therein between, said ipsilateral and contralateral legs having open ends;
said ipsilateral leg having a length extending from the open end of the ipsilateral leg to the main tubular body, said contralateral leg having a length extending from the open end of the contralateral leg to the main tubular body;
said contralateral leg comprising having a hole through the graft wall at a location near the open end of the contralateral leg; and
a delivery catheter comprising an elongate release wire slidably disposed within the delivery catheter, within the hole of the contralateral leg, within the ipsilateral leg and extending throughout the length of the ipsilateral leg from the open end of the ipsilateral leg and into the main tubular body;
wherein retraction of the elongate release wire within the delivery catheter releases the contralateral leg from the ipsilateral leg.

US Pat. No. 9,993,328

ADVANCED KINK RESISTANT STENT GRAFT

TriVascular, Inc., Santa...

1. An endovascular stent-graft comprising:a tubular stent wall having opposed first and second ends;
an undulating wire having opposed first and second ends and being helically wound into a plurality of approximate circumferential windings to define said stent wall;
said undulating wire having a plurality undulations defined by peaks and valleys;
peaks of adjacently juxtaposed circumferential windings being separated by a distance (X) with said distance at said first end being different from said distance at said second end;
said first wire end secured to a first undulation at said first end;
said second wire end secured to a second undulation at said second end;
a graft liner comprising first plurality of layers of porous PTFE having no discernable node and fibril structure; and
a graft covering comprising a second plurality of layers of porous PTFE having no discernable node and fibril structure;
wherein said tubular stent wall is securably disposed between said graft covering and said graft lining;
wherein said endovascular stent-graft has a longitudinal axis and a radial axis perpendicular to said longitudinal axis; and wherein said undulating wire is helically wound at an acute winding angle of 3 degrees to 15 degrees with respect to said radial axis;
wherein said acute winding angle at a portion of said stent wall proximal to said first end of said stent wall is different from said acute winding angle at a portion of said stent wall proximal to said second end of said stent wall;
wherein said peaks and valleys of said undulating wire have a peak height (Y) from an apex of one peak to a base of an adjacently juxtaposed valley;
wherein a ratio of said distance between peaks of adjacently juxtaposed circumferential windings to the peak height (X/Y) is from ?0.1 to 0.3 at said second end; and
wherein the graft liner and the graft covering has a combined thickness from 0.003 inches to 0.015 inches.

US Pat. No. 9,585,774

BIFURCATED ENDOVASCULAR PROSTHESIS HAVING TETHERED CONTRALATERAL LEG

TriVascular, Inc., Santa...

1. An endovascular prosthesis and/or delivery system, comprising:
a bifurcated prosthesis comprising:
a main tubular body having an open end and opposed ipsilateral and contralateral legs defining a graft wall therein between,
said ipsilateral and contralateral legs having open ends; and

a web of biocompatible material disposed between the contralateral leg and the ipsilateral leg and secured to the contralateral
leg and the ipsilateral leg;

wherein the web is a sheet of biocompatible material;
wherein the web is releasably secured to the contralateral leg and the ipsilateral leg; and
wherein the contralateral leg is restricted from significant longitudinal movement so as to prevent bunching up of the contralateral
leg during delivery of the endovascular prosthesis.

US Pat. No. 9,549,829

PTFE LAYERS AND METHODS OF MANUFACTURING

TriVascular, Inc., Santa...

1. A method of processing PTFE, comprising:
extruding a compounded PTFE resin with a lubricating agent through an extruder in a machine direction to form a PTFE ribbon
extrudate, wherein the compounded PTFE resin comprises polytetrafluoroethylene or comprises polytetrafluoroethylene and a
copolymer of polytetrafluoroethylene;

calendering the PTFE ribbon extrudate in the machine direction to form a planar layer of PTFE having an upper surface and
a longitudinal length in a machine direction of an extruder used to produce the layer of PTFE and having a width in a cross
machine or transverse direction;

selectively applying a stretching agent to the layer of PTFE in a predetermined pattern comprising a plurality of first lateral
zones within the layer of PTFE being substantially saturated with the applied stretching agent and a plurality of second lateral
zones within the layer of PTFE lacking a saturated level of the applied stretching agent;

providing a tentering machine;
stretching the layer of PTFE in the tentering machine in the transverse direction to the machine direction while the plurality
of the first lateral zones of the layer of PTFE are fully saturated with the stretching agent throughout their thicknesses
during stretching; and

sintering the layer of PTFE;
wherein the plurality of the first lateral zones have a shape selected from the group consisting of squares, rectangles, circles,
ellipses and combinations thereof; and

wherein, after stretching and sintering, the plurality of the first lateral zones of the PTFE layer have a Gurley Number of
greater than about 1,500 seconds for 100 cc of air at a pressure of 12.4 cm of water, and the plurality of the second lateral
zones of the PTFE layer a Gurley Number of less than about 15 seconds for 100 cc of air at a pressure of 12.4 cm of water.

US Pat. No. 9,308,301

NON-DEGRADABLE, LOW SWELLING, WATER SOLUBLE RADIOPAQUE HYDROGEL POLYMER

TRIVASCULAR, INC., Santa...

1. A biocompatible composition comprising a biocompatible solution comprising:
(a) a diamine;
(b) a polyglycidyl ether;
and
(c) a buffer solution comprising glycine-glycine;
wherein said biocompatible solution does not form emboli in the blood;
wherein said biocompatible solution forms a substantially water-insoluble hydrogel within about 20 minutes or less at a biocompatible
temperature in the body; and

wherein the polyglycidyl ether and diamine are present in a ratio such that biocompatibility is preserved.

US Pat. No. 9,788,934

ADVANCED ENDOVASCULAR GRAFT

TriVascular, Inc., Santa...

1. An endovascular device comprising:
an expandable stent comprising a proximal end comprising proximal apices and an opposed distal end comprising distal apices
with the proximal and distal apices being interconnected by struts therein between,

the proximal apices having a proximal apical width;
the distal apices having a distal apical width;
wherein the proximal apical width of the proximal apices is smaller than the distal apical width of the distal apices; and
wherein a ratio of the distal apical width to the proximal apical width is about 10 or higher.

US Pat. No. 9,724,186

ENDOVASCULAR GRAFT FOR ANEURYSMS INVOLVING MAJOR BRANCH VESSELS

TriVascular, Inc., Santa...

1. An endovascular system for deployment at branched arteries comprising:
a chimney graft having a proximal portion with a proximal open end deployable within a main artery and an opposed distal portion
with a distal open end deployable within a branch artery branched from the main artery; and

a main tubular graft deployable within the main artery and comprising a proximal open end and an opposed open distal end,
the proximal and distal ends defining a main tubular graft wall therein between;

wherein, when deployed, a proximal portion of the main tubular graft wall spans the branch artery; and
wherein, when deployed, the distal portion of the chimney graft is disposed within the branch artery;
wherein, when deployed, the proximal portion of the chimney graft is disposed within the main artery such that the proximal
end of the chimney graft is about adjacent to or extends beyond the proximal end of the main tubular graft;

wherein the endovascular system further comprising a gutter-sealing device as being a separate member from the chimney graft
wherein the gutter-sealing device comprises a second graft disposed over the proximal portion of the chimney graft, the second
graft having a wall with opposed elongate atraumatic side wing portions to occupy space within the main artery among the chimney
graft, the main tubular graft and wall of the main artery;

wherein the gutter-sealing device is disposed about at least a portion of the proximal portion of the chimney graft; and
wherein, during deployment, the second graft is circumferentially rotatable about the proximal portion of the chimney graft
so that the second graft is alignable between the main tubular graft and the wall of the main artery to prevent flow of blood
among the chimney graft, the main tubular graft and a wall of the main artery.

US Pat. No. 9,867,727

ENDOVASCULAR GRAFT

TriVascular, Inc., Santa...

1. An implantable device, comprising:
a frame structure of biocompatible graft material having first and second opposed open ends, said first opposed open end having
a longitudinal axis and a neck portion disposed directly at a terminal portion of said first opposed open end;

a non-inflatable expansion member generally coextensive with the longitudinal axis of said first opposed open end and securably
disposed at the neck portion of said frame structure;

an inflatable structure disposed over at least a first portion of said frame structure near said first opposed open end, wherein
the inflatable structure is longitudinally spaced apart from the non-inflatable expansion member; and

a fluid for inflating the inflatable structure;
wherein the inflatable structure is inflatable with the inflation fluid to provide an inflated state such that the inflated
state conforms to the shape of a bodily lumen.

US Pat. No. 9,713,523

SYSTEM AND METHOD OF PIVOTED STENT DEPLOYMENT

TRIVASCULAR, INC., Santa...

1. A method of deploying a stent-graft within a vessel, comprising:
positioning within the vessel a stent-graft in a contracted state, the stent-graft
comprising a stent and a graft with a connection end of the stent connected to an end of the graft,
the stent including a series of interconnected struts disposed between
respective crowns at the connection end and crowns disposed at a free end of the stent opposite the connection end, the stent
free end including a belt retaining structure comprising a through hole provided in a plurality of crowns of the stent at
the free end thereof and a belt releasably threaded through the through holes with the belt retaining the stent free end in
a contracted state;

releasing the stent connection end from the contracted state within the vessel so as to allow the stent connection end to
expand while the stent free end remains in the contracted state; and

thereafter releasing the belt from the through holes in the crowns of the free end and allowing the free end of the stent
to expand.

US Pat. No. 9,987,123

LOW PROFILE STENT GRAFT AND DELIVERY SYSTEM

TriVascular, Inc., Santa...

1. A device for implantation into a body lumen, comprising:an expandable stent having at least one end and apices thereat;
a generally tubular graft having a lumen extending therethrough for a flow of bodily fluid, said graft comprising a first open end, a second open end, and a graft wall having an interior surface and an opposed exterior surface; and
a plurality of attachment tethers each consisting of a first segment and two second segments;
wherein the first segments of the plurality of attachment tethers are looped around at least one of the apices;
wherein each of the plurality of attachment tethers have opposed tether ends defined by ends of said second segments;
wherein all portions of the two second segments of the plurality of attachment tethers are adjacently juxtaposed over and along portions of the exterior surface of the graft near the first open end of the graft;
wherein material forming the graft wall is folded over and secured at said first open end to define an attachment flap and to cover and secure at least a portion of at least one of the apices, to cover and secure the first segments of the plurality of attachment tethers and to cover and secure at least a portion of the two second segments of the plurality of attachment tethers that are disposed along the portions of the exterior surface of the graft.

US Pat. No. 10,470,871

ADVANCED ENDOVASCULAR GRAFT

TriVascular, Inc., Santa...

1. An endovascular graft comprising:a bifurcated graft comprising a main body portion having a proximal open end and an opposed distal portion having first and second bifurcated portions having open ends to define a first distal leg and a second distal leg;
a proximal stent securably disposed at the proximal open end of the main body portion;
wherein the first distal leg has a first longitudinal length and the second distal leg has a second longitudinal length;
wherein the first longitudinal length is different from the second longitudinal length;
wherein the proximal stent comprises at least one barb integrally formed on a portion of the stent; and
wherein the barb has an elevation angle with respect to a longitudinal axis of a strut from which the barb extends of about 10 degrees to about 45 degrees; and wherein the proximal apices are curved apices having an outer surface with a circular radius of curvature of between about 0.030 inch to about 0.070 inch.

US Pat. No. 10,548,750

ENDOVASCULAR GRAFT

TriVascular, Inc., Santa...

1. A bifurcated endovascular graft system comprising:a main tubular body portion of biocompatible material having a proximal end and an opposed distal end, the proximal end comprising a proximal neck portion having an open end; the main body portion further comprising:
an inflatable cuff permanently secured to the proximal neck portion of the main tubular body portion proximal to the open end of the proximal neck portion and extending around a circumference of the proximal neck portion; and
a non-inflatable expansion member having a generally cylindrical shape secured to a portion of the proximal neck portion of the main tubular body portion between the inflatable cuff and the end of the proximal neck portion;
a first tubular bifurcated portion of biocompatible material having opposed open ends and secured at the distal end of the main body portion;
a second tubular bifurcated portion of biocompatible material having opposed open ends and secured at the distal end of the main body portion;
wherein the first and second tubular bifurcated portions further comprise circumferential inflatable channels; and
wherein at least one of the circumferential inflatable channels of the first and second tubular bifurcated portions extends only partially around a circumference of the first and second tubular bifurcated portions.

US Pat. No. 10,583,020

BALLOON ASSISTED ENDOLUMINAL PROSTHESIS DEPLOYMENT

TRIVASCULAR, INC., Santa...

1. A delivery system for treatment of a vascular defect, comprising:an endoluminal prosthesis for treatment of the vascular defect including:
a tubular main graft portion including a thin flexible material, a main inner lumen, a proximal end and a distal end, and
a self-expanding anchor member with a distal end thereof being secured to the proximal end of the tubular main graft portion; and a delivery catheter, comprising:
an elongate shaft including a distal section and a proximal section, the proximal section being configured to releasably secure the endoluminal prosthesis in a constrained state, and
an inflatable balloon secured to the elongate shaft and disposed within the main inner lumen of the tubular main graft portion of the endoluminal prosthesis in an axial position wherein a proximal end of an inflatable section of the inflatable balloon is disposed adjacent but distal of the self-expanding anchor member, and
wherein the elongate shaft comprises an elongate multi-lumen member extending from a distal section of the elongate shaft to a proximal section of the elongate shaft, the multi-lumen member comprising an inflation lumen for inflation of the inflatable balloon, a guidewire lumen and a release member lumen.

US Pat. No. 10,695,206

ENDOLUMINAL PROSTHESIS DEPLOYMENT DEVICES AND METHODS

TRIVASCULAR, INC., Santa...

1. A catheter system for deploying an endoluminal prosthesis in a body lumen of a patient, comprising:a flexible elongate chassis having a proximal end, a distal end, a distal section and an overall column strength sufficient for advancement of the chassis through a body lumen of a patient;
a self-expanding tubular endoluminal prosthesis disposed in a constrained state over the distal section of the chassis; and
a thin, flexible, resilient extension comprising
a proximal end which is secured in fixed relation to the chassis,
a distal end which is disposed radially outward from an outside surface of the chassis and distal of the proximal end of the extension; and
wherein the extension extends through a wall of a distal end of the endoluminal prosthesis with the extension in a radially constrained state such that the extension at least partially captures a distal segment of the endoluminal prosthesis and restricts proximal displacement of the endoluminal prosthesis relative to the chassis, wherein the extension comprises an s-shape in an unconstrained relaxed state, and wherein a proximal most deflection of the s-shape of the extension extends away from the chassis and a distal most deflection of the s-shape of the extension extends towards the chassis.

US Pat. No. 10,682,222

MODULAR VASCULAR GRAFT FOR LOW PROFILE PERCUTANEOUS DELIVERY

TriVascular, Inc., Santa...

1. A modular endovascular graft assembly, comprising:a bifurcated main graft member formed from a supple graft material including a main fluid flow lumen therein, an ipsilateral leg with an ipsilateral fluid flow lumen in communication with the main fluid flow lumen, and a contralateral leg with a contralateral fluid flow lumen in communication with the main fluid flow lumen;
a proximal anchor member which is formed from a single piece of material, which is disposed at a proximal end of the main graft member, which is secured to the main graft member and which includes a self-expanding proximal stent portion, a self-expanding distal stent portion, and struts that are disposed between adjacent crowns of the proximal stent portion and the distal stent portion, each strut of said struts including a cross sectional area that is the same as or greater than a respective cross sectional area of either the proximal stent portion or the distal stent portion adjacent the strut at locations of connection of the strut to the proximal stent portion and the distal stent portion, and each strut of the struts extending integrally between the proximal stent portion and the distal stent portion such that the strut is continuous with the proximal stent portion and the distal stent portion as part of the single piece of material;
at least one ipsilateral graft extension including a fluid flow lumen disposed therein with the fluid flow lumen of the ipsilateral graft extension sealed to and in fluid communication with the fluid flow lumen of the ipsilateral leg of the main graft member; and
at least one contralateral graft extension including a fluid flow lumen disposed therein with the fluid flow lumen of the contralateral graft extension sealed to and in fluid communication with the fluid flow lumen of the contralateral leg of the main graft member.

US Pat. No. 11,109,989

DURABLE STENT GRAFT WITH TAPERED STRUTS AND STABLE DELIVERY METHODS AND DEVICES

TriVascular, Inc., Santa...


1. A self-expanding cylindrical stent which has a constrained state and a relaxed expanded state, comprising: a longitudinal axis; at least one tapered strut comprising: a proximal crown including a proximal end portion comprising a first dimension; a distal crown including a distal end portion comprising a second dimension, the distal end portion positioned opposite the proximal end portion; and a middle portion positioned approximately halfway between the proximal end portion and the distal end portion, the middle portion extending between and connecting the proximal end portion with the distal end portion, the middle portion comprising a third dimension that is smaller than the first dimension and the second dimension, wherein the at least one tapered strut tapers continuously from the proximal end portion to the middle portion, and from the distal end portion to the middle portion; a proximal end; a distal end; and a plurality of resilient struts comprising the at least one tapered strut, the plurality of resilient struts configured to exert an outward radial force when in the constrained state resulting from confinement of the stent inside an outer sheath, with two or more of the plurality of resilient struts that are non-adjacent to each other having an enlarged portion which is configured to stabilize the plurality of resilient struts while the stent is in the constrained state, and at least one resilient strut of the plurality of resilient struts is absent the enlarged portion and interposed between the non-adjacent resilient struts having the enlarged portion, the at least one resilient strut absent the enlarged portion comprises a first resilient strut absent the enlarged portion and a second resilient strut absent the enlarged portion, each comprising one or more barbs extending away from the enlarged portion of one of the two or more of the plurality of resilient struts that is adjacent to both the first and second resilient struts absent the enlarged portion, the enlarged portion comprising: a longitudinal section which is curved and enlarged in a circumferential orientation relative to the longitudinal axis of the self-expanding cylindrical stent forming an oval shape, and flat sides which are flat along a radial direction from an inside surface to an outside surface of the stent and wherein the flat sides of the enlarged portions abut and circumferentially interfere with each other with the self-expanding cylindrical stent in the constrained state.

US Pat. No. 11,033,413

INTERNAL ILIAC PRESERVATION DEVICES AND METHODS

TriVascular, Inc., Santa...

1. A system for deploying a stent-graft comprising:a catheter having a distal catheter portion and a proximal catheter portion;
a first guidewire extending through the catheter;
a first outer sheath at the distal catheter portion;
a delivery system within the first outer sheath, the delivery system comprising:
a second guidewire;
an expandable stent-graft disposed over a lumen of the second guidewire; and
a second outer sheath over the expandable stent-graft; and
a slidable connector configured to move along a portion of the first guidewire disposed between the first outer sheath and a distal tip of the catheter when the first outer sheath is retracted; anda stent securement component configured to keep the expandable stent-graft in a relatively fixed position over the second guidewire as the second outer sheath is retracted.

US Pat. No. 10,987,238

SYSTEMS AND METHODS FOR GUIDEWIRE CROSSOVER FOR BIFURCATED PROSTHESES

TriVascular, Inc., Santa...

1. An endovascular delivery system, comprising:an elongate outer tubular sheath having an open lumen and opposed proximal and distal ends, the proximal end of the outer tubular sheath securably disposed to a first handle at a handle assembly;
an elongate inner tubular member having a tubular wall with an open lumen and opposed proximal and distal ends, the inner tubular member being slidably disposed within the open lumen of the outer tubular sheath, the proximal end of the inner tubular member securably disposed to a second handle at the handle assembly;
an elongate crossover guidewire slidably disposed within the outer tubular sheath and having a proximal portion extending from the handle assembly, having a distal portion opposed to the proximal portion and having a medial portion disposed there between; and
a crossover guidewire member having an open lumen extending over at least a portion of the medial portion of the elongate crossover guidewire;
wherein a distal portion of the crossover guidewire member is releasably secured within the endovascular delivery system; and
wherein the distal portion of the crossover guidewire member comprises a tether; and
a release wire configured to releasably secure the crossover guidewire member within the endovascular delivery system.

US Pat. No. 10,864,070

PTFE LAYERS AND METHODS OF MANUFACTURING

TriVascular, Inc., Santa...

1. A composite film comprising:a first layer comprising:
a material comprising polytetrafluoroethylene;
a closed cell microstructure with a plurality of interconnected high density regions of polytetrafluoroethylene having no distinct fibrils interconnecting adjacent nodes when viewed at a magnification of 20,000 under a scanning electron microscope;
a thickness from 0.00005 inch to 0.005 inch; and
a fluid permeability of substantially no fluid permeability with a Gurley Number of greater than 12 hours for 100 cc of air at a pressure of 12.4 cm of water or of a limited fluid permeability with a Gurley Number of greater than 1,500 seconds for 100 cc of air at a pressure of 12.4 cm of water;
a second layer of expanded polytetrafluoroethylene having a substantial node and fibril microstructure secured to the first layer, the first layer and the second layer defining an inflatable space therebetween.

US Pat. No. 11,123,205

TANDEM MODULAR ENDOGRAFT

TriVascular, Inc., Santa...


1. A modular endovascular graft assembly comprising:a main elongate tubular graft body having a proximal open end and an opposed distal open end, defining a graft body wall having a proximal portion, a medial portion, a distal portion and an open lumen therein between;
a proximal expansion anchor disposed at or secured to a proximal neck portion disposed at the proximal end of the graft body wall;
a first and second elongate tubular stent-graft extensions percutaneously disposed into the distal end of the tubular graft body, the first and second stent-graft extensions having respective proximal open ends and opposed distal open ends, defining graft body walls having a proximal portions, medial portions, distal portions and open lumens therein between;
wherein the first and second elongate tubular stent-graft extensions comprise a tubular stent securably disposed between a graft liner and a graft cover, the stent comprising an undulating wire having opposed first and second ends and being helically wound into a plurality of approximate circumferential windings to define a stent wall, the undulating wire having a plurality undulations defined by peaks and valleys with peaks of adjacent approximate circumferential windings being separated by a distance (X), and peaks of one circumferential winding being substantially aligned with peaks of an adjacent winding;
wherein the proximal portions of the first and second stent-graft extensions are configured to be deployable into the distal portion of the main graft body;
wherein an adjacent peak and an adjacent valley of said undulating wire has a peak height (Y) from an apex of said adjacent peak to a base of said adjacent valley;
wherein a ratio of the distance between adjacent peaks to the peak height (X/Y) at the proximal portions of the first and second stent-graft extensions is about 0.1 or less than 0.1;
wherein the open lumen of the main tubular graft has approximately or substantially circular cross-section having a main diameter;
wherein the first and second stent-graft extensions are self-expanding or balloon-expandable;
wherein the open lumens of the proximal portions of the first and second stent-graft extensions have cross-sections having first and second dimensions, respectively, where the sum of the first and second dimensions is greater than the main diameter, prior to being percutaneously disposed into the distal end of the tubular graft body;
wherein, in combination, the proximal portions of the first and second stent-graft extensions are conformable to the shape of the open lumen of the main graft body;
wherein the open lumens of the proximal portions of the first and second stent-graft extensions have substantially D-shaped cross-sections as a result of self-expansion or balloon expansion against each other and the main graft lumen after being percutaneously disposed into the distal end of the tubular graft body and are configured to prevent flow of bodily fluid between outer proximal portions of the first and second stent-graft extensions and the open lumen of the main tubular graft; and
wherein the main graft body wall further comprises: at least one circumferential inflatable channel disposed towards the proximal portion of the graft body wall near the proximal open end of the main tubular graft body and distally prior the proximal neck portion; and a plurality of circumferential inflatable channels disposed towards the distal portion of the graft body wall near the distal open end of the main tubular graft body, the at least one of the plurality of circumferential inflatable channels disposed toward the distal portion of the graft body causing the first and second stent-graft extensions to be secured to each other and to the graft body wall when the at least one of the plurality of circumferential inflatable channels disposed toward the distal portion of the graft body is in an inflated state.

US Pat. No. 11,065,097

ADVANCED KINK-RESISTANT STENT GRAFT

TriVascular, Inc., Santa...


1. An endovascular stent-graft comprising:a graft; and
an undulating wire connected to the graft, the undulating wire helically wound in a longitudinal direction to form a plurality of undulating windings for a first portion, a second portion, and a third portion between the first and second portions in the longitudinal direction, each of the undulating windings having peaks and valleys,
wherein each of the undulating windings has a peak height defined as a longitudinal distance Y between a peak and an immediately adjacent valley of the undulating windings,
wherein each of the immediately adjacent undulating windings are separated from each other in the longitudinal direction by a valley-to-peak distance defined as a longitudinal distance X between a valley of one of the immediately adjacent undulating windings and a peak of the other immediately adjacent undulating windings,
wherein a ratio X/Y between the valley-to-peak distance X and the peak height Y of the undulating windings of the third portion is greater than the ratio X/Y of the undulating windings of each of the first and second portions, and
wherein the ratio X/Y of the undulating windings of the third portion is a positive value between 0.5 and 5, and the ratio X/Y of the undulating windings for at least one of the first or second portions is a negative value between ?0.1 and ?1 wherein when the undulating windings for at least one of first or the second portions comprise a first winding and a second winding, and a lowest valley of the first winding is lower than a highest peak of the second winding, the negative value results.

US Pat. No. 11,013,626

ENDOVASCULAR DELIVERY SYSTEM WITH AN IMPROVED RADIOPAQUE MARKER SCHEME

TriVascular, Inc., Santa...

1. An endovascular delivery system, comprising:an elongate outer tubular device having an open lumen and opposed proximal and distal ends with a medial portion therein between;
an inner tubular member disposed within said outer tubular device, said inner tubular member comprising a proximal portion comprising:
a rotatable prosthesis holder comprising a body surrounding an axial guidewire, said body comprising a plurality of markers; and
an outer surface, upon which a prosthesis may be secured prior to delivery,
wherein the plurality of markers comprises a first generally cylindrical marker having a longitudinal axis aligned in a direction parallel to said axial guidewire and a second generally cylindrical marker having a longitudinal axis aligned in a direction perpendicular to said axial guidewire.

US Pat. No. 10,918,507

DELIVERY CATHETER FOR ENDOVASCULAR DEVICE

TriVascular, Inc., Santa...

1. A delivery catheter for delivery of an inflatable endoluminal prosthesis, comprising:an elongate shaft with sufficient column strength for percutaneous advancement within a patient's body lumen, the elongate shaft including a proximal section, a distal section, and at least one lumen extending therein;
a plurality of releasable belts disposed on the proximal section of the elongate shaft and configured to releasably constrain a self-expanding member of the inflatable endoluminal prosthesis;
a plurality of elongated release members in communication with a distal end of the elongate shaft and including a proximal section configured to releasably secure at least one respective releasable belt of the plurality of releasable belts while said at least one releasable belt is in a configuration that constrains at least a portion of the inflatable endoluminal prosthesis;
a release wire lumen comprising an elongate release wire sleeve therein, said release wire lumen being different from and excluding the at least one lumen and extending within the elongate shaft, the elongate release wire sleeve including a low friction material and extending from the distal section to the proximal section of the elongate shaft upon which the self-expanding member is configured to be disposed, said elongate release wire sleeve comprising a separate lumen for each of the plurality of elongated release members, each of the separate lumens extending within the release wire lumen;
a fitting releasably interlocking with the inflatable endoluminal prosthesis, the fitting comprising a passage;
at least one release member different from said plurality of elongated release members, having an outer transverse dimension and axial bending stiffness that allows said at least one release member to pass through the passage of the fitting; and
a fill tube including a fill tube lumen extending axially within the elongate shaft.

US Pat. No. 10,799,377

ADVANCED ENDOVASCULAR GRAFT AND DELIVERY SYSTEM

TRIVASCULAR, INC., Santa...

1. A delivery system for delivering a stent graft, the delivery system comprising:a delivery catheter comprising an elongate shaft with a proximal section and a distal section;
a stent graft having a main graft body with an inner lumen configured for confining a flow of blood therethrough and a stent portion secured to an end portion of the main graft body and extending externally to the main graft body, the stent graft being loaded on the proximal section of the delivery catheter with the elongate shaft disposed within the inner lumen;
and an expandable centering device having a central portion disposed on the elongate shaft within the inner lumen of the main graft body and external to the stent portion, the central portion configured to fully radially expand within the inner lumen of the main graft body while the stent portion is radially constrained to radially expand the main graft body such that the elongate shaft and stent graft are centered toward a midline longitudinal axis of a patient's vessel while the stent portion is in a radially constrained state; and
further comprising a constraining device configured to radially constraint the stent portion in the radially constrained state while the main graft body is radially expanded.