Patent ID: 8475492
Filing Date: 2013-07-02
Classification: A61B,A61L

Abstract:
1. A method of treating a vein, comprising the steps of: advancing a catheter distally across a treatment zone in a vein; creating a first occlusion in the vein at a distal end of the treatment zone; introducing a first bolus of media into the vein against a proximal side of the first occlusion such that the first bolus of media flows in a proximal direction after reaching the proximal side of the first occlusion, thereby displacing pre-existing blood in the vein in a proximal direction to reduce the amount of blood mixing with the media; creating at least a second occlusion in the vein, spaced proximally apart from the first occlusion; introducing a second bolus of media into the vein against a proximal side of the second occlusion such that the second bolus of media flows in a proximal direction after reaching the proximal side of the second occlusion; and withdrawing the catheter from the vein.