Medical device with trigger actuation assembly

摘要

An electrosurgical device for medical treatment of tissue at a treatment site through a body opening. The device includes a sheath having proximal and distal extremities and having a passageway extending from the proximal extremity to the distal extremity. A guide tube is slidably mounted in the passageway of the sheath and has proximal and distal extremities and a lumen extending from the proximal extremity to the distal extremity. A needle electrode is slidably mounted in the lumen of the guide tube and has proximal and distal extremities. Insulation is coaxially disposed on the needle electrode. A handle adapted to be gripped by the human hand is provided and the proximal extremity of the guide tube is mounted on the handle. An assembly is carried by the handle for bending the distal extremity of the guide tube at an angle with respect to the longitudinal axis. The needle electrode is adapted to be coupled to an energy source. A single actuation element is carried by the handle and coupled to the needle electrode and the insulation. The actuation element is movable in a single stroke from a first position in which the needle electrode and the insulation are disposed within the guide tube and a second position in which the needle electrode and the insulation are disposed in the tissue at the treatment site. A method for using the device is provided.