BIFURCATED GRAFT DEPLOYMENT SYSTEMS AND METHODS
First Claim
1. An endoluminal vascular prosthesis deployment system for deploying an endoluminal vascular prosthesis having at least a main branch and a first branch, comprising:
- a flexible catheter body that 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 comprises a tubular member that surrounds and constrains at least the main branch portion, the tubular member having a first portion adjacent a first end of the tubular member, a second portion adjacent a second end of the tubular member, and an intermediate portion positioned between the first and second portions;
the tubular member comprising a plurality of perforations,a release wire extending through the plurality of perforations and configured to tear portions of the tubular member of the main branch restraint between the perforations to deploy the main branch portion when the release wire is proximally retracted by releasing at least one of the proximal portion or intermediate portion before the distal portion;
a first branch restraint that comprises a tubular member configured to releasably constrain the first branch portion, the first branch restraint coupled to a first branch release mechanism.
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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.
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Citations
20 Claims
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1. An endoluminal vascular prosthesis deployment system 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 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 comprises a tubular member that surrounds and constrains at least the main branch portion, the tubular member having a first portion adjacent a first end of the tubular member, a second portion adjacent a second end of the tubular member, and an intermediate portion positioned between the first and second portions;
the tubular member comprising a plurality of perforations,a release wire extending through the plurality of perforations and configured to tear portions of the tubular member of the main branch restraint between the perforations to deploy the main branch portion when the release wire is proximally retracted by releasing at least one of the proximal portion or intermediate portion before the distal portion; a first branch restraint that comprises a tubular member configured to releasably constrain the first branch portion, the first branch restraint coupled to a first branch release mechanism. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for deploying a bifurcated endoluminal prosthesis at the junction of a main vessel and first and second branch vessels, comprising the steps of:
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providing a deployment system containing a prosthesis having a main body section and first and second proximally extending branch sections; introducing the deployment system into the first branch vessel at a first access site; advancing the deployment system distally through at least a portion of the first branch vessel and into the main vessel; releasing the main body section of the prosthesis from a radially compressed state within the deployment system to a radially expanded state within the main vessel by proximally retracting a main sheath from the main branch section; releasing the second branch section of the prosthesis by proximally retracting an branch sheath of the deployment system; and removing the main and branch sheaths through the second branch vessel and through a second access site.
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20. A method of deploying a bifurcated endoluminal vascular prosthesis comprising a main branch segment, a first branch segment, and a second branch segment in a patient'"'"'s artery comprising:
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advancing the deployment catheter through an iliac branch of the patient'"'"'s artery and into a main branch; retracting an outer sheath of the deployment catheter to expose the main branch segment and second branch segment of the prosthesis; deploying the main graft segment of the prosthesis by axially withdrawing a release wire that causes a main graft segment sheath constraining the main graft segment of the prosthesis to separate; proximally retracting a guidewire coupled to the main graft segment sheath and proximally retracting the main graft segment sheath; and continuing to proximally retract the guidewire and with proximally retracting a second branch restraint that is coupled to the guidewire from the second branch segment.
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Specification