Patent ID: 8795156

Claim:
A method of positioning a treatment instrument in a body, the method comprising: inserting a medical device into an anatomical lumen of the body, the medical device comprising: a first tube including a distal end and a proximal end, the first tube including a longitudinal axis and a channel extending from the proximal end to an aperture at the distal end; a handle at the proximal end of the first tube; and a positioning mechanism entirely proximal to the distal end and connected to the handle, the positioning mechanism configured for rotation around the longitudinal axis of the first robe and upward deflection at and relative to the distal end of the first tube to control a direction at which a treatment instrument extends from the aperture, wherein the handle includes an actuator configured to rotate the positioning mechanism up to 360 degrees relative to the longitudinal axis; inserting a treatment instrument through the channel after inserting the medical device into the anatomical lumen; positioning the treatment instrument by rotating the positioning mechanism around the longitudinal axis of the first tube; and positioning the treatment instrument by upwardly deflecting a distal portion of the positioning mechanism, wherein rotating the positioning mechanism is independent of upwardly deflecting the distal portion of the positioning mechanism.