Interlocking endoluminal device

Abstract

An endoluminal device comprises at least a first member and a second member, which may be modular. The first member comprises a first trunk portion, a first midsection comprising a first opening, and a first leg portion. The second member comprises a second trunk portion, a second midsection comprising a second opening, and a second leg portion. The device has an assembled configuration in which the first member and second member are interlocked with one another with the second trunk portion coaxially contained within the first trunk portion, the second leg portion protruding through the first opening, and the second opening facing the first leg portion. The second midsection may have a leg stump portion that protrudes into the first leg portion of the first member in the assembled configuration. A system and method for deploying the device may use identical catheters for deploying the two members.

1 . A modular endoluminal device comprising an outer member and an inner member, the outer member and inner member each comprising a stent-graft, a fluid inlet opening, a first fluid exit opening, and a second fluid exit opening, the device having an assembled configuration in which the inner member fits partially inside the outer member and partially protrudes through the outer member first exit opening such that the inner member inlet opening aligns with the outer member inlet opening and the inner member first exit opening aligns with the outer member second exit opening, the device adapted to receive a fluid stream through the aligned inner and outer member inlet openings and to discharge the fluid from the device in two discharge streams, one through each of the second fluid exit openings.  
   
   
       2 . The endoluminal device of  claim 1 , wherein the outer member further comprises a seal ring.  
   
   
       3 . The endoluminal device of  claim 2 , wherein the seal ring is positioned adjacent the fluid inlet opening.  
   
   
       4 . The endoluminal device of  claim 2 , wherein the seal ring is positioned adjacent the first fluid exit opening.  
   
   
       5 . The endoluminal device of  claim 1 , wherein at least one stent-graft comprises a textile, a plastic, or a combination thereof.  
   
   
       6 . The endoluminal device of  claim 1 , wherein the device is adapted to be mounted in an aorta and the stent-graft comprises an uncovered stent portion positioned to be located at an intersection of a renal lumen with the aorta.  
   
   
       7 . The endoluminal device of  claim 6 , wherein the uncovered stent portion comprises a hexagonal cell design.  
   
   
       8 . The endoluminal device of  claim 1 , wherein each of the inner member and the outer member has a tapered diameter.  
   
   
       9 . The endoluminal device of  claim 1 , wherein the fluid inlet opening is located at a distal end of each member, and the fluid inlet opening of the inner member is positioned proximal the fluid inlet opening of the outer member in the assembled configuration.  
   
   
       10 . The endoluminal device of  claim 1 , wherein the fluid inlet opening is located at a distal end of each member, and the fluid inlet opening of the inner member is distally coextensive with the fluid inlet opening of the outer member in the assembled configuration.  
   
   
       11 . The device of  claim 1 , wherein each of the inner member and the outer member comprises an inside surface and an outside surface, the inner member further comprising at least one impingement area positioned receive fluid flow to force the outside surface of the inner member against the inside surface of the outer member in the assembled configuration.  
   
   
       12 . The endoluminal device of  claim 1  wherein the inner member further comprises a leg stump portion leading to the first fluid exit opening, the outer member further comprises a leg portion leading to the second fluid exit, and the leg stump portion protrudes into the leg portion in the assembled configuration.  
   
   
       13 . A two-component, bifurcated endoluminal device kit comprising: 
 a first stent-graft component comprising a trunk portion, a first long leg portion connected to the trunk portion and a short leg portion connected to the trunk portion adjacent the long leg portion; and    a second stent-graft component comprising a trunk portion, a second long leg portion for receiving the short leg, and a long leg receiving aperture;    wherein the first long leg is adapted to be inserted through the long leg receiving aperture, and the short leg is adapted to be inserted into the second long leg, thereby forming a bifurcated endoluminal device.    
   
   
       14 . A method for deploying a modular endoluminal device in a deployment location in a branched lumen comprising a main lumen, a first branch lumen, and a second branch lumen, the modular endoluminal device comprising an outer member and an inner member, the outer member and inner member each comprising a stent-graft, a fluid inlet opening, a first fluid exit opening, and a second fluid exit opening, the device having an assembled configuration in which the inner member fits partially inside the outer member, the method comprising: 
 (a) inserting a first introducer containing the outer member into the branched lumen;    (b) deploying the outer member with the inlet opening in the main lumen, the first exit opening aligned with the first branch lumen, and the second exit opening positioned in the second branch lumen;    (c) inserting a second introducer containing the inner member into the branched lumen;    (d) assembling the device into the assembled configuration by deploying the inner member with the inner member inlet opening aligned with the outer member inlet opening, a portion of the inner member protruding through the outer member first exit opening and terminating at the inner member second exit opening, and the inner member first exit opening aligned with the outer member second exit opening; and    (e) the assembled device receiving endoluminal fluid from the main lumen through the aligned inner and outer member inlet openings and discharging the fluid into the first branch lumen through the inner member second exit opening and into the second branch lumen through the outer member second exit opening.