A sensor for measuring fluid concentrations or the temperature of body. A fiber-optic catheter having a fluorometric sensor attached at a distal end is excited by a light source outside the body. The sensor fluoresces with an intensity or with a lifetime related to the concentration of the fluid or the...http://www.google.de/patents/US5012809?utm_source=gb-gplus-sharePatent US5012809 - Fiber optic catheter system with fluorometric sensor and integral flexure compensation
