Cannula/optical fiber assembly for e.g. varix treatment, has optical fiber with core surrounded by external protective sheath and stripped on distal part of fiber, where stripped distal part is accommodated entirely inside cannula

摘要

The assembly (E) has an optical fiber (1) introduced inside a cannula (2). The fiber has a core (10) surrounded by an external protective sheath (11). The sheath has an outer diameter (D1) equal to an internal diameter (D2) of the cannula in a distal portion of the cannula. The core is stripped on a distal part (100) of the fiber, and the stripped distal part is accommodated entirely inside the cannula. The cannula has a hollow insert with a continuous inner cavity at its distal part (21), and the part (100) is threaded in the insert.