Abstract
The purpose of this study is to develop a small (1.3 mm diameter) and high resolution (Lateral resolution: more than 60 μm, Distance resolution: 12 μm) optical coherence tomography probe for bronchoscopey. This probe consists of single optical fiber which is fixed a Ni tube and a micro lens (SELFOC lens) which is located in front of the optical fiber, metal saddle-shaped coils which are fabricated by photofabrication and two solenoid coils which are fabricated by coiling machine. The solenoid coils are located in frontside and backside of the saddle-shaped coil. When an alternating current is applied to the driving coils, the Ni tube was vibrated by electromagnetic force one dimensionally. The optical fiber amplitude is assisted by magnetic force of the solenoid shaped assist coils. To satisfy required view angle (45 degrees), the optical fiber vibration amplitude needs 236 μm/p-p. The evaluated fiber vibration amplitude of the fabricated probe was 56 μm/p-p. To satisfy the required vibration amplitude, adjusting positions of assist coils will be effective for enlarge the optical fiber vibration.
