Bifurcated graft deployment systems and methods
First Claim
1. An endoluminal vascular prosthesis deployment catheter for deploying an endoluminal vascular prosthesis having at least a main branch and a first branch, comprising:
- a flexible catheter body that supports the prosthesis in a pre-deployment state and comprises 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, and a distal tip that is positioned adjacent the distal end of the outer sheath and is coupled to the inner core;
a main branch restraint that surrounds and constrains at least the main branch, the main branch restraint having a first end portion, a second end portion, and an intermediate portion positioned between the first and second end portions;
a first branch restraint that comprises a tubular member configured to releasably constrain the first branch; and
a withdrawal element that is coupled with the main branch restraint and the first branch restraint;
wherein;
the withdrawal element is coupled with the main branch restraint and the first branch restraint such that withdrawal of the withdrawal element withdraws the main branch restraint and the first branch restraint;
the main branch restraint is coupled with the withdrawal element at a first position on the withdrawal element relative to a distal end of the withdrawal element;
the first branch restraint is coupled with the withdrawal element at a second position on the withdrawal element relative to the distal end of the withdrawal element; and
the first position is spaced apart along the length of the withdrawal element from the second position, the first position being further away from the distal end of the withdrawal element than the second position.
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Accused Products
Abstract
A method for deploying an endoluminal vascular prosthesis using a deployment catheter 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.
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Citations
19 Claims
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1. An endoluminal vascular prosthesis deployment catheter for deploying an endoluminal vascular prosthesis having at least a main branch and a first branch, comprising:
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a flexible catheter body that supports the prosthesis in a pre-deployment state and comprises 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, and a distal tip that is positioned adjacent the distal end of the outer sheath and is coupled to the inner core; a main branch restraint that surrounds and constrains at least the main branch, the main branch restraint having a first end portion, a second end portion, and an intermediate portion positioned between the first and second end portions; a first branch restraint that comprises a tubular member configured to releasably constrain the first branch; and a withdrawal element that is coupled with the main branch restraint and the first branch restraint; wherein; the withdrawal element is coupled with the main branch restraint and the first branch restraint such that withdrawal of the withdrawal element withdraws the main branch restraint and the first branch restraint; the main branch restraint is coupled with the withdrawal element at a first position on the withdrawal element relative to a distal end of the withdrawal element; the first branch restraint is coupled with the withdrawal element at a second position on the withdrawal element relative to the distal end of the withdrawal element; and the first position is spaced apart along the length of the withdrawal element from the second position, the first position being further away from the distal end of the withdrawal element than the second position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An endoluminal vascular prosthesis deployment catheter for deploying an endoluminal vascular prosthesis having at least a main branch and a first branch, comprising:
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a flexible catheter body that supports the prosthesis in a pre-deployment state and comprises 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, and a distal tip that is positioned adjacent the distal end of the outer sheath and is coupled to the inner core; a main branch restraint that surrounds and constrains at least the main branch, the main branch restraint having a first end portion, a second end portion, and an intermediate portion positioned between the first and second end portions; a first branch restraint that comprises a tubular member configured to releasably constrain the first branch; and a withdrawal element that is coupled with the main branch restraint and the first branch restraint such that withdrawal of the withdrawal element withdraws the main branch restraint and the first branch restraint; wherein; at least a distal portion of the withdrawal element is positioned between the inner core and the outer sheath when the catheter is in a pre-deployment state; and the withdrawal element has a proximal portion, a distal portion, and an intermediate portion between the proximal and distal portions; the deployment catheter is configured such that the intermediate portion of the withdrawal element is positioned within the outer sheath and the proximal portion of the withdrawal element extends past the distal end of the outer sheath when the deployment catheter is in a pre-deployment state; and the inner core is positioned within the outer sheath along the entire length of the outer sheath when the deployment catheter is in a pre-deployment state. - View Dependent Claims (17, 18, 19)
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Specification