Catheter-based fastener implantation apparatus and methods

Abstract

Apparatus and methods utilize an intraluminal fastener applier having a guide body with a longitudinal axis. The guide body is sized and configured for intraluminal deployment in a hollow body organ. An actuated assembly is carried by the guide body that is selectively operable to generate an implantation force to implant at least one fastener into tissue within the hollow body organ. The actuated assembly includes a driven member extending generally along the longitudinal axis, which is sized and configured to engage a selected fastener. The actuated assembly also includes a drive member coupled to the driven member to impart the implantation force to the driven element in a direction that is at an angle to the longitudinal axis of the guide body.

1 . A system comprising
 at least one tissue-piercing fastener having a sharpened distal tip for piercing and penetrating tissue,   a fastener attachment assembly sized and configured to be deployed from a remote access site to a targeted endovascular region, the fastener attachment assembly including
 an intraluminal directing device defining an access path and including a deflectable distal region, and 
 an intraluminal fastener applier separate from the intraluminal directing device and being sized and configured for introduction along the access path and including an actuated member that is selectively operable to generate an implantation force in an implantation force direction to implant the tissue-piercing fastener by causing the sharpened distal tip to pierce and penetrate the tissue in the targeted endovascular region, and 
 means associated with the fastener attachment assembly for applying a resolving force in a direction different than the implantation force direction within the targeted endovascular region to resolve at least a portion of the implantation force. 
   
     
     
         2 . A system according to  claim 1   wherein the means includes a stabilizing member carried by the intraluminal directing device and/or the intraluminal fastener applier.   
     
     
         3 . A system according to  claim 2   wherein the stabilizing member includes a strut assembly.   
     
     
         4 . A system according to  claim 2   wherein the stabilizing member includes a spring-loaded arm adapted for contact with tissue.   
     
     
         5 . A system according to  claim 2   wherein the stabilizing member includes an expandable member adapted for contact with tissue.   
     
     
         6 . A system according to  claim 2   wherein the stabilizing member includes a tissue grasping element.   
     
     
         7 . A system according to  claim 1   wherein the at least one tissue-piercing fastener comprises a helical fastener, and wherein the actuated member comprises a driven member for implanting a helical fastener.   
     
     
         8 . A system according to  claim 1   wherein the intraluminal fastener applier includes a catheter body that carries the actuated member, the catheter body having a column strength, and   wherein the means includes, at least in part, the column strength of the catheter body.   
     
     
         9 . A system according to  claim 1   wherein the intraluminal directing device has a column strength, and   wherein the means includes, at least in part, the column strength of the intraluminal directing device.