Vascular sealing device with microwave antenna

Abstract

Systems and methods introduce a closure material to seal a vessel puncture site. The system and methods provide a catheter adapted for passage through a tissue puncture and sized to occupy substantially all the tissue puncture. The catheter includes a lumen in fluid communication with a fluid delivery port adjacent the catheter distal end. One or more dispensers are in fluid communication with the catheter lumen for dispensing first and second fluid compositions in the catheter lumen. An actuator causes the first and second fluid compositions to be dispensed from the dispensers and mixed by flowing the first and second fluid compositions through a static mixer. The first and second fluid compositions are dispensed from the fluid delivery port as a fluid mixture that reacts in situ to form a nonfluent closure composition adjacent the vessel puncture site.

What is claimed is:  
     
         1 . An assembly for introducing a closure material to seal a vessel puncture site, the closure material comprising a mixture of a first and second fluid composition which, upon mixing, react to form a nonfluent closure composition, the assembly comprising 
 a catheter for passage through a tissue puncture and having a distal end, at least one fluid delivery port adjacent the catheter distal end to occupy a position adjacent the vessel puncture site, and a lumen in the catheter in fluid communication with the fluid delivery port,    one or more dispensers in fluid communication with the catheter lumen for dispensing the first and second fluid compositions in the catheter lumen, and    an actuator for causing the first and second fluid compositions to be dispensed from the one or more dispensers mixed by flowing the first and second fluid compositions through a static mixer and dispensed from the fluid delivery port as a fluid mixture that reacts in situ to form the nonfluent closure composition adjacent the vessel puncture site,    wherein the catheter is sized to block flow of the fluid mixture from the fluid delivery port into a substantial part of the tissue puncture, whereby a localized in situ closure forms adjacent the vessel puncture site to seal the vessel puncture site.    
     
     
         2 . An assembly as in  claim 1   wherein the static mixer is incorporated into the catheter.    
     
     
         3 . An assembly as in  claim 1   wherein the static mixer is a cartridge.    
     
     
         4 . A method for sealing a vascular puncture site comprising the steps of 
 introducing a catheter through a tissue puncture, the catheter including a distal end and at least one fluid delivery port adjacent the distal end to be positioned adjacent the vessel puncture site, the catheter being sized to occupy substantially all the tissue puncture,    providing first and second fluid compositions which, upon mixing, react to form a nonfluent closure composition,    mixing the first and second fluid compositions by flowing the components through a static mixer, the static mixer communicating with the fluid delivery port, and    dispensing the first and second fluid compositions from the fluid delivery port as a fluid mixture that reacts in situ to form the nonfluent closure composition adjacent the vessel puncture site, the size of the catheter blocking flow of the fluid mixture from the fluid delivery port into a substantial part of the tissue puncture, whereby a localized in situ closure forms adjacent the vessel puncture site to seal the vessel puncture site.    
     
     
         5 . A method as in  claim 4   wherein the static mixer is incorporated in the catheter.    
     
     
         6 . A method as in  claim 4   wherein the static mixer is a cartridge.