Patent ID: 8246643
Filing Date: 2012-08-21
Classification: A61B,A61M

Abstract:
1. An ultrasound catheter comprising: an elongate flexible catheter body having a proximal end, a distal end and at least one lumen extending longitudinally therethrough; an ultrasound transmission member extending longitudinally through the lumen of the catheter body, the ultrasound transmission member having a proximal end that is coupled to a separate ultrasound generating device; a tip coupled to the distal end of the ultrasound transmission member, wherein the tip has at least one radial dimensional step having a contact surface facing away from the ultrasound transmission member and in a distal direction, wherein a cross-sectional area of the tip at a location on a distal side of the contact surface is less than a cross-sectional area of the tip at the contact surface; and an intermediate member attached to the catheter body and having a contact surface facing at least a portion of the contact surface on the tip and in a proximal direction, the contact surface of the intermediate member being configured to contact the contact surface of the tip so as to prevent the tip from becoming dislodged from the catheter body, wherein a cross-sectional area of the intermediate member at a location on a proximal side of the contact surface of the intermediate member is less than a cross-sectional area of the intermediate member at the contact surface of the intermediate member.