Branch endograft delivery
AssigneeRed Vascular Technologies, LLC
InventorMyles Douglas
Life of this patent
Estimating the term…
Abstract
A system for treating disease involving branching vessels of a mammal system can include a main graft assembly (i) having a lumen permitting fluid flow therethrough, and (ii) configured to expand within a first vessel of a mammal; and a branch graft assembly including a branch cover (i) having a cover lumen permitting fluid flow therethrough; and (ii) configured to expand within a branch vessel that branches from the first vessel. The branch graft assembly may also include an expandable branch stent extending within the cover lumen. The branch graft assembly may further include a branch sheath (i) extending between the branch stent and the cover lumen, and (ii) constraining radial expansion of the branch stent within the cover lumen.
Claims7
(canceled)
A graft system for treating branching blood vessels of a mammal, said branch assembly comprising:
- a main graft assembly including a main stent with a main stent lumen and a main cover with a main cover lumen;
- and
- a branch graft assembly including a branch stent with a branch stent lumen and a branch cover with a branch cover lumen, wherein the branch cover is coupled with the main cover;
- a branch sheath (i) positioned fully over the expandable branch stent and beneath the branch cover, and (ii) constraining radial expansion of the branch stent, wherein the expandable branch stent is attached to the branch cover along at least a part of a perimeter of the branch cover in order to inhibit distal movement of the branch sheath within the branch cover lumen while said branch graft assembly is being advanced through a first vessel and into a branch vessel;
- an outer sheath which constrains the branch graft assembly to lie substantially in parallel against the main graft assembly while the main graft assembly and the branch graft assembly are being advanced through the first vessel;
- such that (i) retracting the outer sheath from over the main graft assembly and the branch graft assembly laterally releases the branch graft assembly from the main graft assembly and into a branch vessel that branches from the first vessel and (ii) retracting the branch sheath proximally permits expansion of the branch stent and branch cover such that the branch cover contacts a wall of the branch vessel after the branch graft assembly has been retracted into the branch vessel.
Dependencies are inferred from the claim text.