A protective sheath of the type used to protect a scope during insertion of a fiber into the scope may include holes for improved fluid flow and for ease of sterilization, reinforcement, a luer connector to position the sheath relative to a scope and to enable use of a seal, pin vise or other device to secure the fiber to sheath during insertion or withdrawal of the sheath from the scope, and/or markings to facilitate positioning of the sheath relative to the scope and/or trimming of the fiber.
