An adapter couples a length of optical fiber to a hollow probe and to an optical coherence tomography instrument. The length of optical fiber may be greater than the length of the adapter itself. The optical fiber is fixed to an optical coupler at a proximal end of the adapter and may be maintained in...http://www.google.com/patents/US7682089?utm_source=gb-gplus-sharePatent US7682089 - System and method for positioning a probe