Patent ID: 6117142
Filing Date: 2000-09-12
Classification: A61B

Abstract:
A vaso-occlusive coil deployment system for use in placing a coil at a preselected site within a vessel comprising:an elongated flexible catheter having a wall and a lumen extending throughout the length of the catheter, said catheter further having a proximal section and a distal section, said distal section of the catheter being formed of a material having a durometer which exhibits the characteristic that when a fluid pressure is applied to the interior of the catheter the walls of the distal section of the catheter expand outwardly;an embolic coil being disposed in fluid-tight engagement within the lumen of the distal section of the catheter;a syringe coupled to the proximal section of the catheter for applying a fluid pressure to the interior of the catheter to thereby cause the distal section of the catheter to expand outwardly to thereby release the embolic coil; and,said syringe comprising a syringe housing having a cylindrical wall and a lumen extending throughout the length of the catheter, said syringe housing further having a proximal end and a distal end, and having a port at the distal end for communicating with the proximal section of the elongated flexible catheter, a piston having an outer surface, said piston being movably mounted within the lumen and extending out of the proximal end of the syringe housing, a plunger movably mounted in the lumen at the distal end of the syringe for applying a fluid through the port, and a pressure gage for providing an indication of the amount of pressure being applied to the plunger by the piston.