Non-contact electrode basket catheters with irrigation

A catheter system comprising:

• a delivery sheath;
• a non-contact electrode basket catheter insertable through the delivery shaft, the basket catheter including a plurality of splines operable to be moved by a deployment member between a deployed position and an undeployed position;
• a fluid delivery tube housed within the basket catheter, the fluid delivery tube having at least one fluid delivery port for irrigating within the basket catheter between the plurality of splines to reduce clotting or thrombus formation;
• and
• a seal fixedly provided between the fluid delivery tube and an outer tube of the basket catheter, the seal preventing blood or fluid ingress into the outer tubing.

A non-contact electrode basket catheter system with irrigation comprising:

• a catheter shaft;
• a basket catheter insertable through the catheter shaft, the basket catheter including:
• a fluid delivery tubing provided within an outer tubing,
• a plurality of splines connected to the outer tubing and on one end and to a deployment member on an opposite end, the deployment member operable to move the splines between an expanded configuration and a collapsed configuration,
• fluid delivery means for irrigating within the basket catheter between the plurality of splines to reduce clotting or thrombus formation, and
• sealing means for stopping blood or fluid from ingressing into the catheter shaft.

A method comprising:

• moving a deployment member axially within an inner fluid delivery tubing in a first direction to expand a plurality of splines of a non-contact electrode basket catheter, and moving the deployment member axially within the inner fluid delivery tubing in a second direction to collapse the plurality of splines;
• irrigating between the splines of the non-contact electrode basket catheter;
• and
• preventing fluid ingress into a catheter shaft.