Patent ID: 7963987
Filing Date: 2011-06-21
Classification: A61F

Abstract:
1. A method for using a sequential delivery device, comprising: introducing a device into an organ, said device including an inner catheter, a first stent, at least a second stent, a floating placement ring, and an outer sheath; said first stent having a proximal end, a distal end, an exterior surface, and an inner lumen; said second stent having a proximal end, a distal end, an exterior surface, and an inner lumen; said inner catheter having at least one member extending radially outward from an outer surface thereof to a first diameter, said member extending partially around a circumference of said inner catheter; and said placement ring being disposed between said proximal end of said first self-expanding stent and a distal end of said member, wherein said placement ring comprises a first portion and a second portion, said first and second portions defining a receiving cavity, wherein said first portion has a second diameter that is greater than said first diameter of said member, and said second portion has a third diameter that is less than said first diameter of said member and greater than a diameter of said inner catheter, disposing said device within a specified region of said organ, said distal end of said second stent being positioned approximately adjacent said proximal end of said first stent; rotating said inner catheter to a first rotational position relative to said placement ring where said member is not aligned with said receiving cavity; unsheathing said first stent within said organ by moving said sheath proximally with respect to said inner catheter and engaging said member in said first rotational position such that said distal end of said member engages said proximal end of said placement ring and a distal end of said placement ring engages said proximal end of said first stent, said member and said placement ring thereby providing a force against said proximal end of said first stent and preventing said first stent from moving proximally relative to said inner catheter during deployment; advancing said second stent through said organ; rotating said inner catheter to a second rotational position relative to said placement ring where said member is aligned with said at least one receiving cavity; moving said placement ring along said inner catheter in said second position past said member; and unsheathing said second stent.