An improved endoscopic device which is introduced into the intestinal tract of a living organism and which operates autonomously therein. In a first embodiment, the probe utilizes a miniature charge-coupled device (CCD) camera and a fiber optic/diode illumination system for inspection of the intestine wall. The CCD camera operation is supported by data processing electronics and an inductive data transfer circuit located within the probe which facilitate the real-time transfer of the acquired image data out of the probe to an external monitoring and control device. Power is supplied to the probe inductively from an external power source. The probe is completely sealed so as to be protected against damage by gastric acids or other potentially damaging substances residing within the patient. A second embodiment of the probe incorporates a miniature diode laser which is used in conjunction with the CCD array to produce autofluorescence spectra of the interior of the intestinal wall. In another aspect of the invention, an improved endoscopic device useful for implanting the aforementioned endoscopic smart probe is disclosed. A method for inspecting and/or treating the interior regions of the intestinal tract using the aforementioned smart probe is also disclosed.