Apparatus and method for implantation of a bifurcated endovascular prosthesis
First Claim
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1. A bifurcated stent graft comprising:
- a first component having a first end and second end and a central portion therebetween, said first component having a first aperture at said first end, and having an axial passage communicating therethrough;
said first component having a first leg extending from said second end, said first leg having an axial cavity therethrough in communication with said axial passage;
said first component having a second leg extending from said second end, said second leg extending to a distal end and having an axial passageway therethrough in communication with said axial passage;
said first component having a compressed state and an expanded state;
means for restraint of said first component in said compressed state;
means for engagement of said first component at a distal end of a first catheter, said first catheter adapted for translation within an artery to an intersection with a secondary artery;
a second catheter, said second catheter having a distal end translatably positionable relative to said distal end of said first catheter;
a snare, said snare deployable from a position adjacent to said distal end of second catheter;
said snare being retractable to provide a means to removably connect a third guide wire translated through said secondary artery to said second catheter, into a captured state;
a second guide wire axially communicating through said second catheter and extending into said axial passageway of said first component in said compressed state;
a translation of said second catheter upon said second guide wire in a direction toward said first end of said first component, providing means to draw said third guidewire in said captured state, into a deployed position within said axial passageway; and
said third guidewire in said deployed position exchangeable with a secondary guide component, said secondary guide component providing a means to guide an extension of said second leg through said secondary artery and into an engagement with said distal end of said second leg.
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Abstract
A bifurcated stent graft for animal or human implantation and method of delivery thereof. The device stent graft employs a first component having an axial passage communicating with the axial cavities of a second leg and longer first leg. A separate leg extension is engageable to the second leg. A first catheter engages the first component for translation to the implantation site and a second catheter engaged with the first is provided with a prepositioned guide wire inside the second leg which may be employed to easily position a guide wire for engagement of the second leg with the leg extension.
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Citations
11 Claims
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1. A bifurcated stent graft comprising:
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a first component having a first end and second end and a central portion therebetween, said first component having a first aperture at said first end, and having an axial passage communicating therethrough; said first component having a first leg extending from said second end, said first leg having an axial cavity therethrough in communication with said axial passage; said first component having a second leg extending from said second end, said second leg extending to a distal end and having an axial passageway therethrough in communication with said axial passage; said first component having a compressed state and an expanded state; means for restraint of said first component in said compressed state; means for engagement of said first component at a distal end of a first catheter, said first catheter adapted for translation within an artery to an intersection with a secondary artery; a second catheter, said second catheter having a distal end translatably positionable relative to said distal end of said first catheter; a snare, said snare deployable from a position adjacent to said distal end of second catheter; said snare being retractable to provide a means to removably connect a third guide wire translated through said secondary artery to said second catheter, into a captured state; a second guide wire axially communicating through said second catheter and extending into said axial passageway of said first component in said compressed state; a translation of said second catheter upon said second guide wire in a direction toward said first end of said first component, providing means to draw said third guidewire in said captured state, into a deployed position within said axial passageway; and said third guidewire in said deployed position exchangeable with a secondary guide component, said secondary guide component providing a means to guide an extension of said second leg through said secondary artery and into an engagement with said distal end of said second leg. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. In a bifurcated stent graft having a collapsed state adapted for translation through a blood vessel and having an expanded state for permanent implantation in said blood vessel and engaged to a first catheter and having a first component having a first end and second end and a central portion therebetween and having a first aperture at said first end, and having an axial passage communicating therethrough with an axial cavity of a first leg and with an axial passageway communicating through a shorter second leg which engages with a separate extension of said second leg which is communicated from a secondary artery, the improvement being:
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a second catheter, said second catheter having a distal end translatably positionable relative to said distal end of said first catheter; a second guide wire axially communicating through said second catheter and having a distal end pre-positioned within said axial passageway of said stent graft while in said collapsed state; a snare, said snare deployable from a position adjacent to said distal end of second catheter; said snare being retractable to provide a means to removably connect a third guide wire translated through said secondary artery in captured state in a connection with said second catheter and, whereby subsequent to a release of said stent graft to said expanded state a translation of said second catheter upon said second guide wire, in a direction toward said first end of said first component, provides means to translate said third guide wire connected to said second catheter, into said second axial passageway whereafter said third guidewire is exchangeable with a guide component employable for guiding said extension of said second leg through said secondary artery and into an engagement with said distal end of said second leg. - View Dependent Claims (11)
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Specification