An endoscopy is a procedure that enables examination of the inside of a patient’s body using an optical cable. Traditionally limited to visualizing the esophagus, stomach, or bowel, endoscopes are now able to examine most hollow organs or cavities in the human body. This is primarily due to technological enhancements to the endoscope itself.
There is a niche available in endoscopy for nanopositioning systems like piezo inertia drives; a single space-saving piezoelectric actuator can be used to position lenses for zoom and focus control with high precision. This could prove vital for next-generation, rigid chip-on-the-tip endoscopes where there is potential for piezo-based actuators to connect the optics to the image processing chip to facilitate variable focusing and zoom functions.
Another piezo based solution for endoscopy makes use of small ceramic tubes that can bend in two dimensions, guiding and scanning an optical fiber to generate an image with high resolution.