Framed biodegradable yarn structure and method

Abstract

The techniques of this disclosure generally relate to a prosthesis including framed biodegradable yarn graft material having a frame and biodegradable yarns combined with the frame. The biodegradable yarns seal tissue integration openings within the frame. The frame provides long term mechanical strength while the biodegradable yarns provide acute strength and impermeability to prevent endoleaks. As the biodegradable yarns degrade, the drop in textile density creates tissue integration openings, through which tissue grows. The integrate of tissue into the framed biodegradable yarn graft material provides biological fixation of the prosthesis in vessels and prevents endoleaks and migration of the prosthesis.

What is claimed is: 
     
         1 . A prosthesis comprising:
 a frame; and   biodegradable yarns combined with the frame.   
     
     
         2 . The prosthesis of  claim 1  where the frame comprises permanent yarns. 
     
     
         3 . The prosthesis of  claim 2  wherein a diameter of the permanent yarns is greater than a diameter of the biodegradable yarns. 
     
     
         4 . The prosthesis of  claim 2  wherein there are more biodegradable yarns than permanent yarns. 
     
     
         5 . The prosthesis of  claim 1  wherein the frame comprises tissue integration openings. 
     
     
         6 . The prosthesis of  claim 5  wherein the tissue integration openings are sealed by the biodegradable yarns. 
     
     
         7 . The prosthesis of  claim 5  wherein each of the tissue integration openings are defined by two adjacent vertical permanent yarns of the frame and two adjacent horizontal permanent yarns of the frame. 
     
     
         8 . The prosthesis of  claim 1  wherein the frame and the biodegradable yarns are woven together. 
     
     
         9 . The prosthesis of  claim 1  further comprising a framed biodegradable yarn graft material comprising the frame and the biodegradable yarns. 
     
     
         10 . The prosthesis of  claim 9  further comprising at least one stent ring coupled to the framed biodegradable yarn graft material. 
     
     
         11 . A prosthesis comprising:
 a proximal seal zone comprising a framed biodegradable yarn graft material; and   an exclusion zone comprising permanent and impermeable graft material.   
     
     
         12 . The prosthesis of  claim 11  further comprising:
 a distal seal zone comprising the framed biodegradable yarn graft material. 
 
     
     
         13 . The prosthesis of  claim 12  wherein the exclusion zone extends from the proximal seal zone to the distal seal zone. 
     
     
         14 . The prosthesis of  claim 11  wherein the framed biodegradable yarn graft material comprises permanent yarns combined with biodegradable yarns. 
     
     
         15 . The prosthesis of  claim 14  wherein the permanent yarns are woven with the biodegradable yarns. 
     
     
         16 . A method comprising:
 forming a prosthesis comprising:   forming a framed biodegradable yarn graft material by combining biodegradable yarns with a frame.   
     
     
         17 . The method of  claim 16  further comprising sealing tissue integration openings within the frame with the biodegradable yarns. 
     
     
         18 . The method of  claim 17  further comprising deploying the prosthesis within a vessel, wherein the framed biodegradable yarn graft material contacts a vessel wall of the vessel. 
     
     
         19 . The method of  claim 18  wherein the biodegradable yarns biodegrade opening the tissue integration openings. 
     
     
         20 . The method of  claim 19  wherein tissue from the vessel wall fills the tissue integration openings and encases the frame.