Patent ID: 9314298
Filing Date: 2016-04-19
CPC Classification: A61B,A61N

Claim Text:
1. A tissue ablation catheter comprising: an elongate catheter body with a central longitudinal axis, the catheter body having at least a first lumen and a second lumen extending longitudinally through the catheter body, wherein the elongate catheter body is deflectable; an ultrasound ablation element positioned within a distal region of the elongate catheter body, the ultrasound ablation element comprising: a first orifice in the elongate catheter body proximal of the ultrasound ablation element and open to the first lumen to define a first vacuum pathway; a distal vacuum chamber defined by the elongate catheter body distal of the ultrasound ablation element and in communication with the first lumen to define a second vacuum pathway; a second orifice in the elongate catheter body distal of the ultrasound ablation element and open to the distal vacuum chamber; and at least one flow control apparatus positioned to regulate flow through one of the vacuum pathways independent of flow through the other vacuum pathway.