Method and apparatus for fixation of implantable devices adjacent a body lumen

Abstract

The present application relates to method and apparatus for reducing migration and rotation of implantable devices including an expandable element and an elongate portion.

What is claimed is: 
     
         1 . An implantable device, comprising:
 an expandable element connected to an elongate conduit, the elongate conduit adapted to provide a first inner lumen for fluid communication between a first end of the elongate conduit and the expandable element at a second end; and   a material on a surface of the implantable device that is adapted to enhance ingrowth.   
     
     
         2 . The device of  claim 1 , wherein the material is a sleeve positioned about the elongate conduit. 
     
     
         3 . The device of  claim 2 , wherein the sleeve comprises expanded polytetrafluoroethelene (EPTFE). 
     
     
         4 . The device of  claim 2 , wherein the sleeve comprises polypropylene. 
     
     
         5 . The device of  claim 2 , wherein the sleeve comprises polyethylene. 
     
     
         6 . The device of  claim 2 , wherein the sleeve is bioresorbable. 
     
     
         7 . The device of  claim 2 , wherein the sleeve comprises polylactic acid. 
     
     
         8 . The device of  claim 2 , wherein the sleeve comprises a split ring. 
     
     
         9 . The device of  claim 2 , wherein the sleeve comprises a segmented ring. 
     
     
         10 . The device of  claim 1 , wherein the material is a surface structure. 
     
     
         11 . The device of  claim 1 , wherein the material is a helical sleeve. 
     
     
         12 . The device of  claim 1 , wherein the material is an ingrowth-promoting patch or coating disposed at a distal end of the implantable device. 
     
     
         13 . The device of  claim 1 , further comprising one or more stiffener means for reducing rotation of the expandable element. 
     
     
         14 . The device of  claim 1 , further comprising one or more hooks. 
     
     
         15 . The device of  claim 1 , wherein the expandable element includes a microtextured surface. 
     
     
         16 . An implantable device, comprising:
 an expandable element connected to an elongate conduit, the elongate conduit adapted to provide a first inner lumen for fluid communication between a first end of the elongate conduit and the expandable element at a second end, and the elongate conduit adapted to provide a second inner lumen along at least a portion of the elongate conduit; and   one or more hooks adapted for fixation.   
     
     
         17 . The device of  claim 16 , wherein a Nitinol hook is deployed along the second inner lumen and includes a pointed end exiting the elongate conduit. 
     
     
         18 . The device of  claim 16 , wherein the hooks are disposed a distal end of the device. 
     
     
         19 . The device of  claim 16  further comprising stiffening means for providing reduced rotation of the expandable element of the device. 
     
     
         20 . The device of  claim 16  further comprising enhanced ingrowth means for forming an adhesion to tissue.