OPEN IRRIGATED ABLATION CATHETER

摘要

Medical devices and methods for using medical devices are disclosed. An example medical device may include an open-irrigated ablation catheter. The open-irrigated ablation catheter may include a catheter body, an electrode tip body with irrigation ports at a distal end, and a coolant conduit. The distal end of the coolant conduit may extend into a proximal portion of the electrode tip body. Fluid flow from the coolant conduit may be diverted proximally and/or towards the wall of the electrode tip body by one or more openings proximal of a closed distal end of the conduit or by a structure blocking and diverting flow from an open distal end of the conduit.

主权项

1. An open-irrigated ablation catheter system, comprising:
a catheter body with a distal end; an electrode tip body with a distal end and a proximal end configured for connection to the distal end of the catheter body, the electrode tip body having a wall defining an open interior region, the wall having one or more irrigation ports, wherein the wall is conductive for delivering radio frequency (RF) energy, wherein the one or more irrigation ports are in fluid communication with the open interior region to allow fluid to flow from the open interior region through the one or more irrigation ports; and a coolant conduit disposed within the catheter body, the coolant conduit having a fluid directing mechanism at a distal end thereof configured to direct fluid laterally towards the wall.