Medical system including a flexible waveguide mechanically coupled to an actuator

A method comprising the steps of:

• guiding radiation through an optical waveguide to tissue of a patient, the waveguide forming a hollow core;
• and
• directing gas to the tissue while guiding the radiation,
• wherein the radiation and the gas are sufficient to cut the tissue and to coagulate blood.

A medical laser system comprising:

• a laser;
• an optical waveguide forming a hollow core coupled to the laser;
• a delivery device coupled to the waveguide, the delivery device being selected from the group consisting of a handpiece, an endoscope, and a robot;
• and
• a gas input port configured to receive gas from a gas source,
• wherein during operation, radiation from the laser and the gas from the gas source are delivered to tissue of a patient, the radiation and gas being sufficient to incise the tissue and substantially coagulate blood.