Medical device for fibred bimodal optical spectroscopy

A bimodal optical spectroscopy device for producing spectra of autofluorescence and diffuse reflectance signals originating from a biological sample, this device comprising:

• an excitation unit constituted by several monochromatic light-emitting diodes and a polychromatic lamp;
• a flexible optical probe constituted by an excitation optical fiber arranged, on a distal side, at a center of the flexible optical probe to successively convey the excitation signals from each element of the excitation unit to the biological sample, and several receiving optical fibers arranged, on the distal side, in the form of concentric circles around the excitation optical fiber to convey signals originating from the sample;
• a detection unit comprising several spectrometers, each of the spectrometers receiving signals originating from the receiving optical fibers arranged on the same circle in the optical probe, the spectrometers being respectively connected to the circles;
• a filter wheel for removing excitation signals;
• and
• a processing unit for controlling the excitation and detection units and for ensuring synchronization between these units during measurements.