US Patent 8123745 - Ablation catheter with CNT film tip electrode

http://www.freepatentsonline.com/8123745.html

This patent from Biosense Webster, Inc. takes advantage of the transparent, electrical conductive properties of carbon nanotube films in forming a catheter tip. Claim 1 reads:

1. A catheter, comprising:

a catheter body;

a tip electrode with an optically transmissive shell and a carbon nanotube film on said shell; and

a ring electrode at least partially mounted on the film of the tip electrode, the ring electrode being electrically connected to the film.