A novel ultrasmall composite optical fiberscope.

Background: Accurately aiming laser energy at a target from a two-dimensional endoscopic view is difficult during endoscopic laser surgery, particularly when the endoscope and the laser fiber are misaligned. We developed a composite optical fiberscope (COF) that can simultaneously visualize a target area and perform laser irradiation. The identical orientation of the endoscope and the laser fiber allows intuitive aiming at a target, even from a two-dimensional endoscopic view.

The development of a composite-type optical fiberscope system for fetoscopic laser photocoagulation of chorionic plate anastomosing vessels (FLPC).

We developed a new laser device using a composite-type optical fiberscope for laser surgery to treat twin-twin transfusion syndrome. The composite-type optical fiberscope (2.2 mm in external diameter) consists of a centrally located single fiber for laser treatment (0.

Blood flow measurement system for fetoscopic laser photocoagulation of chorionic plate anastomosing vessels (FLPC).

Fetoscopic laser photocoagulation of chorionic plate anastomosing vessels (FLPC) applies to the treatment of previable fetuses with severe twin-twin transfusion syndrome (TTTS). The ultimate goal of FLPC is selective blood flow interruption of anastomotic communicating vessels on the placenta fetoscopically. However, there has not been an established method to confirm that the blood flow is blocked, thus, it depends on the operator's experience or intuition to evaluate whether the FLPC was performed successfully or not.