Endoscopy device having an electrical control system

An endoscope suitably configured and sized for use in an unsedated trans-nasal endoscopy procedure, comprising:

• a handle for gripping by a user, the handle including opposing roller knobs located on opposite sides of the handle and a rotatable thumb knob rotatable about the same axis about which the opposing roller knobs rotate;
• a flexible shaft extending from the handle, the shaft having a generally constant outer diameter that is less than 4.5 mm and a working channel having a generally constant working channel diameter that is between 1.5 mm and 2.5 mm extending longitudinally therethrough, the shaft having a distal region that maintains the generally constant outer diameter and that is configured to be inserted into the nose of a patient and steered through the patient's nasal cavities in a left/right direction by the opposing roller knobs and in an up/down direction by the thumb knob via connection to a plurality of steering wires extending along the flexible shaft between the outer diameter of the flexible shaft and the working channel;
• a circuit board located at the distal region of the shaft, the circuit board having a longitudinally-extending proximal portion and a distal leg that is bent radially inwardly about 90 degrees relative to the longitudinally-extending proximal portion of the circuit board;
• and
• an illumination source mounted on the distal leg of the circuit board and radially outside the working channel so as not to impede the working channel such that the illumination source faces distally.