Multifilar cable catheter

Abstract

A catheter device including an elongate catheter shaft comprising a multifilar cable tubing having a proximal portion and a distal portion. At least a part of the distal portion is more flexible than the proximal portion. The shaft includes two lumens, one of which houses a stent deployment shaft configured to deploy a self-expanding stent disposed in a distal extension of the shaft.

1 . A catheter device, comprising:
 an elongate catheter shaft comprising a multifilar tubing having a proximal portion and a distal portion wherein at least a part of the distal portion is more flexible than the proximal portion, the multifilar tubing defining a first lumen, and further comprising:   a self-expanding stent;   a second lumen;   and a stent deployment shaft disposed in the second lumen.   
     
     
         2 . The catheter device of  claim 1 , further comprising a distal extension disposed on a distal end of the multifilar tubing, where the self-expanding stent is deployably disposed in the distal extension. 
     
     
         3 . The catheter device of  claim 1 , wherein the first lumen is configured for passage of a wire guide. 
     
     
         4 . The catheter device of  claim 1 , further comprising a wire guide disposed through the first lumen. 
     
     
         5 . The catheter device of  claim 1 , further comprising a polymeric coating, said coating covering an inner region of the multifilar tubing. 
     
     
         6 . The catheter device of  claim 1 , further comprising a polymeric coating, said coating covering an outer region of the multifilar tubing. 
     
     
         7 . The catheter device of  claim 1 , where the stent deployment shaft is configured as a second multifilar cable tube. 
     
     
         8 . A catheter device, comprising:
 an elongate catheter shaft comprising multifilar tubing having a proximal portion and a distal portion, the multifilar tubing comprising:   a first lumen configured for passage therethrough of a wire guide;   a second lumen, through which a stent-deployment shaft is disposed; and   a distal extension disposed on a distal end of the tubing, wherein the distal extension deployably houses a self-expanding stent.   
     
     
         9 . The catheter device of  claim 8 , further comprising a distal extension disposed on a distal end of the multifilar tubing, where the self-expanding stent is deployably disposed in the distal extension. 
     
     
         10 . The catheter device of  claim 8 , wherein at least one of the first lumen is configured for passage of a wire guide. 
     
     
         11 . The catheter device of  claim 8 , further comprising a wire guide disposed through the first lumen. 
     
     
         12 . The catheter device of  claim 8 , further comprising a polymeric coating, said coating covering an inner region of the multifilar tubing. 
     
     
         13 . The catheter device of  claim 8 , further comprising a polymeric coating, said coating covering an outer region of the multifilar tubing. 
     
     
         14 . The catheter device of  claim 8 , where the stent deployment shaft is configured as a second multifilar cable tube. 
     
     
         15 . A method of using the catheter device of  claim 8 , said method comprising a step of directing the stent deployment shaft distally against the stent, pushing the stent out of the distal extension. 
     
     
         16 . The method of  claim 15 , further comprising a step of providing a wire guide disposed through the second lumen. 
     
     
         17 . The method of  claim 16 , further comprising a step of retracting the wire guide into the second lumen. 
     
     
         18 . The method of  claim 17 , wherein the step of retracting the wire guide is executed prior to the step of directing the stent deployment shaft distally.