Patent ID: 9662169
Date: 2017-05-30
CPC Classifications: A61B,A61M

Claim:
1. A catheter comprising: an elongated body; a distal section having at least a first electrode and a second electrode, each electrode adapted for irrigation; a control handle proximal the elongated body; a coaxial irrigation tubing having at least an inner lumen and an outer lumen, the inner lumen dedicated to transporting fluid to the first electrode, and the outer lumen dedicated to transporting fluid to the second electrode; and a common valve comprising a moveable member, an inlet opening and an outlet opening, the outlet opening being fluidly connected to both the inner lumen and the outer lumen of the coaxial irrigation tubing, the common valve having first and second separate fluid flow pathways between the inlet opening and the outlet opening, the second fluid flow pathway extending around an exterior surface of the moveable member and into the outer lumen, the first fluid pathway extending through the moveable member and in the inner lumen, and the moveable member being configured to automatically move in response to a threshold fluid force to thereby enlarge or expand the second fluid flow pathway.