Bifurcated graft deployment systems and methods
First Claim
1. An endoluminal prosthesis deployment system for deploying an endoluminal prosthesis having at least a main branch portion and a first branch portion, comprising:
- a flexible catheter body comprising an outer sheath with a proximal and distal end, an inner core that extends through the outer sheath and is axially moveable with respect to the outer sheath;
a main branch restraint that surrounds and constrains at least the main branch portion of the prosthesis, the main branch restraint having a proximal portion adjacent to a proximal end of the main branch portion of the prosthesis, a distal portion adjacent a distal end of the main branch portion of the prosthesis, and an intermediate portion positioned between the proximal and distal portions of the main branch restraint;
a plurality of segments between perforations in the main branch restraint along the length of at least a portion of one side of the main branch restraint, wherein at least one of the perforations is positioned closer to the distal portion of the main branch restraint than another of the perforations;
a release wire extending through at least two of said perforations and looped around a segment of said plurality of segments between said at least two of said perforations; and
a first branch restraint comprising a tubular member coupled to a first branch release mechanism;
wherein;
when retracted, the release wire tears segments of the main branch restraint between perforations.
9 Assignments
0 Petitions
Accused Products
Abstract
A deployment catheter for deploying an endoluminal vascular prosthesis that has at least a main graft portion and a first branch graft portion. The deployment catheter preferably comprises an elongate, flexible catheter body having a proximal end and a distal end, and an outer sheath and an inner core that is axially moveable with respect to the outer sheath. The catheter preferably comprises a main graft restraint that has a main graft release mechanism comprising a main graft sheath and a suture threaded through a plurality of the openings in the main graft sheath. The catheter further comprises at least one branch graft restraint comprising at least one branch graft release mechanism.
662 Citations
56 Claims
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1. An endoluminal prosthesis deployment system for deploying an endoluminal prosthesis having at least a main branch portion and a first branch portion, comprising:
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a flexible catheter body comprising an outer sheath with a proximal and distal end, an inner core that extends through the outer sheath and is axially moveable with respect to the outer sheath; a main branch restraint that surrounds and constrains at least the main branch portion of the prosthesis, the main branch restraint having a proximal portion adjacent to a proximal end of the main branch portion of the prosthesis, a distal portion adjacent a distal end of the main branch portion of the prosthesis, and an intermediate portion positioned between the proximal and distal portions of the main branch restraint; a plurality of segments between perforations in the main branch restraint along the length of at least a portion of one side of the main branch restraint, wherein at least one of the perforations is positioned closer to the distal portion of the main branch restraint than another of the perforations; a release wire extending through at least two of said perforations and looped around a segment of said plurality of segments between said at least two of said perforations; and a first branch restraint comprising a tubular member coupled to a first branch release mechanism; wherein; when retracted, the release wire tears segments of the main branch restraint between perforations. - 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)
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33. An apparatus for deploying a stent graft in a passageway, comprising:
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a flexible catheter body; a stent graft supported by the catheter body, the stent graft comprising a main body portion; a removable sheath that surrounds and constrains at least a portion of the main body portion of the stent graft, the removable sheath having a first portion, a second portion distal to the first portion, and an intermediate portion between the first and second portions; a plurality of sheath segments between perforations in the removable sheath spaced along the first portion, the intermediate portion, and the second portion of the removable sheath; and a release member passing through at least two of the perforations and looped around two or more of the plurality of sheath segments; wherein;
at least one of the perforations is positioned closer to the second portion of the removable sheath than another of the perforations; and
retracting the release member relative to the removable sheath tears the sheath segments between the perforations formed in the removable sheath. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
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44. An apparatus for deploying a stent graft in a passageway, comprising:
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a flexible catheter having a proximal end portion and a distal end portion and an outer sheath, wherein in use at least the distal end portion of the catheter is introduced through a first access site in a patient'"'"'s vasculature; a bifurcated stent graft supported by a distal end portion of the catheter, the stent graft comprising a main body portion, a first branch portion in communication with the main body portion, and a second branch portion in communication with the main body portion; a main body restraint comprising a sheath that surrounds and constrains at least a portion of the main body portion the main body restraint sheath comprising a plurality of segments between perforations in the main body restraint sheath, wherein at least one of the perforations is positioned closer to a distal end of the main branch restraint sheath than another of the perforations; and a retraction wire coupled to the main body restraint; wherein; the outer sheath is axially retractable from a first position to at least a second position; a distal end portion of the outer sheath is positioned closer to the distal end portion of the flexible catheter when the outer sheath is in the first position than when the outer sheath is in the second position; the distal end portion of the outer sheath is positioned closer to the distal end portion of the flexible catheter than a proximal portion of the outer sheath; a distal portion of the retraction wire is supported within the distal end portion of the outer sheath when the outer sheath is in the first position; the retraction wire exits the distal end portion of the outer sheath when the catheter is in a pre-deployment state such that the retraction wire does not pass through the proximal end portion of the outer sheath; retraction of the outer sheath exposes the retraction wire and releases the retraction wire from within the distal end portion of the outer sheath; the stent graft, the removable sheath, and the distal end portion of the catheter in use are advanced into the passageway through the first access site in the patient'"'"'s body; in use a proximal end portion of the retraction wire is retrieved through a second access site in the patient'"'"'s body; the main body restraint is withdrawn by withdrawing the retraction wire through the second access site; and the second access site is separate and apart from than the first access site. - View Dependent Claims (45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56)
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Specification