Cardiac conditions such as blockages in arteries caused by plaque build-up are treated intravascularly with laser radiation using an optical fiber having a heat conducting end cap on its distal end. A spherical lens within the end cap focuses a small portion of the laser energy directly into the plaque...http://www.google.fr/patents/US5041109?utm_source=gb-gplus-shareBrevet US5041109 - Laser apparatus for the recanalization of vessels and the treatment of other cardiac conditions
Laser apparatus for the recanalization of vessels and the treatment of other ...