Guide for intravascular device

Abstract

A device guide includes a distal portion configured for insertion through a guide catheter so as to extend out of a distal end of the guide catheter into a branch blood vessel. The distal portion of the device guide has a semi-tubular shape chosen so as to guide an intravascular device inserted through the guide catheter into the branch blood vessel

1 . A device guide, comprising a distal portion configured for insertion through a guide catheter so as to extend out of a distal end of the guide catheter into a branch blood vessel,
 wherein the distal portion of the device guide has a semi-tubular shape chosen so as to guide an intravascular device inserted through the guide catheter into the branch blood vessel.   
     
     
         2 . The device guide according to  claim 1 , and comprising an insertion rod, which is connected to a proximal end of the distal portion and is configured to push the distal portion of the device guide through the guide catheter. 
     
     
         3 . The device guide according to  claim 1 , wherein the distal portion comprises a tube, which has a longitudinal cut and is configured to open along the longitudinal cut. 
     
     
         4 . The device guide according to  claim 1 , wherein the distal portion has a hemi-cylindrical form. 
     
     
         5 . The device guide according to  claim 4 , wherein the hemi-cylindrical form is closed around no more than 180° of a circumference of the hemi-cylindrical form. 
     
     
         6 . The device guide according to  claim 4 , wherein the distal portion comprises a rounded distal tip. 
     
     
         7 . The device guide according to  claim 4 , wherein the distal portion comprises one or more flexible rings extending over an open side of the distal portion. 
     
     
         8 . The device guide according to  claim 1 , wherein the distal portion comprises a canted proximal end. 
     
     
         9 . The device guide according to  claim 1 , wherein the distal portion has a hole in a distal end thereof, configured for passage of the intravascular device through the hole. 
     
     
         10 . The device guide according to  claim 1 , wherein the distal portion has a slit in a distal end thereof. 
     
     
         11 . The device guide according to  claim 1 , wherein the distal portion comprises an upward-pointing beak at a distal tip of the distal portion. 
     
     
         12 . The device guide according to  claim 1 , wherein the distal portion comprises a downward-pointing beak at a distal tip of the distal portion. 
     
     
         13 . A device guide, comprising a distal portion configured for insertion through a guide catheter into a blood vessel and having a semi-tubular shape chosen so as to guide an intravascular device inserted through the guide catheter into the blood vessel,
 wherein the distal portion has a hemi-cylindrical form and comprises a semicircular covering extending over an open side of the hemi-cylindrical form.   
     
     
         14 . The device guide according to  claim 13 , comprising an insertion rod, which is connected to a proximal end of the distal portion, wherein the insertion rod is configured to push the distal portion of the device guide through the guide catheter. 
     
     
         15 . The device guide according to  claim 13 , wherein the hemi-cylindrical form is closed around no more than 180° of a circumference of the hemi-cylindrical form. 
     
     
         16 . The device guide according to  claim 13 , wherein the distal portion comprises a rounded distal tip. 
     
     
         17 . The device guide according to  claim 13 , wherein the distal portion comprises a canted proximal end. 
     
     
         18 . The device guide according to  claim 13 , wherein the distal portion has a hole in a distal end thereof, configured for passage of the intravascular device through the hole. 
     
     
         19 . The device guide according to  claim 13 , wherein the distal portion has a slit in a distal end thereof. 
     
     
         20 . The device guide according to  claim 13 , wherein the distal portion comprises a beak at a distal tip of the distal portion.