James K. Lee;Michael Olen Zirkle;Chad Allen Lieber
发明人:
James K. Lee,Chad Allen Lieber,Michael Olen Zirkle
申请号：
US11941884
公开号：
US08500730B2
申请日:
2007.11.16
申请国别(地区):
US
年份:
2013
代理人:
摘要：
A catheter enables real-time light measurements from tissue while performing RF ablation. The tip design isolates illumination and collection paths such that light exits the tip and travels through the tissue before returning to the tip. The catheter has a tip electrode having an exterior shell, an inner layer and a hollow cavity. The inner layer is configured to transmit light outside the tip electrode, and the hollow cavity is configured to receive light. An inner surface of the inner layer has an opaque coating to isolate light injected into the inner layer from light collected in the hollow cavity. A first optical waveguide extends between the catheter body and tip electrode to inject light into the inner layer and illuminate the tissue, and a second optical waveguide extends between the catheter body and tip electrode to collect the recaptured light in the hollow cavity.
