System for attaching an abdominal aortic stent or the like
View Patent ↗A surgical tool useful for connecting an abdominal aortic stent or the like to tissue may include a head holding at least one fastener, a shaft, and a joint connecting the head to the shaft, the joint allowing the head to rotate in at least one direction relative to the shaft. That surgical tool may be used to connect a graft assembly to tissue, where the graft assembly may include a graft connected to a stent. The graft, stent and surgical tool may be inserted into a body lumen; and the head of the surgical tool may be pivoted relative to the shaft such that the distal end of the head contacts the interior of the stent. At least one fastener is then deployed to connect the stent to the body lumen.
1. A method for attaching a structure to a body lumen, comprising:
providing a surgical tool comprising
a plurality of substantially flat staples,
a head holding said staples, said staples arranged in a stack therein, wherein said stack is biased distally,
a shaft,
a joint connecting said head to said shaft, wherein said joint allows said head to pivot to a position in which the longitudinal centerline of said head is angled relative to the longitudinal centerline of said shaft, and
a driver slidable within said head;
providing a graft assembly, said graft assembly including a graft connected to a stent and a nose cone affixed to said stent by a plurality of struts;
inserting said graft, stent and surgical tool into the body lumen;
pivoting said head relative to said shaft such that the distal end of said head contacts the interior of said stent;
splaying at least one said staple within said body lumen, after said inserting;
after said splaying, reciprocating said driver to deploy serially the distalmost said staple in said stack through said stent into the body lumen; and
after said reciprocating, frangibly separating said nose cone and said stent.
2. The method of claim 1 , further comprising stabilizing said shaft before said deploying.
3. The method of claim 1 , further comprising, after said deploying, moving said head to a different position along the perimeter of said stent and repeating said deploying.
4. The method of claim 3 , wherein said moving comprises moving said head relative to said shaft.
5. The method of claim 1 , further comprising
providing a catheter having a lumen;
advancing said catheter into said body lumen; and
advancing said surgical tool and said graft assembly through said lumen of said catheter, wherein said lumen of said catheter has a diameter no greater than 14 French.
6. The method of claim 1 , wherein said graft assembly includes a sheath positioned around said graft and said stent, further comprising retracting said sheath before said deploying.
7. The method of claim 1 , further comprising creating an opening in said graft.
8. The method of claim 1 , wherein said frangibly separating comprises breaking said struts.