Patent ID: 6312402
Filing Date: 2001-11-06
Classification: A61B

Abstract:
A catheter system, comprising:a guiding catheter including an elongated guiding catheter body defining a guiding catheter lumen;a delivery catheter defining a plurality of lumens the delivery catheter positionable in the guiding catheter lumen, the delivery catheter including,an elongated delivery catheter body;an introducer distal portion with a tissue piercing distal end;an ultrasound transducer coupled to the introducer distal portion;a puncturing element disposed in one of the plurality of lumens and having a distal end extendable radially through an opening in a circumference of the elongated delivery catheter body and into tissue, the puncturing element comprising an axial lumen therethrough for the delivery of a medicament;a support member supporting the ultrasound transducer and creating a chamber between the ultrasound transducer and an outer wall of an axial lumen of the plurality of lumens, wherein the chamber is filled with an acoustic reduction medium selected from a group comprising air, a gas, and a vacuum.