Endoscopic surgical device

摘要

An endoscopic surgical device for severing tissue within a subject and for retrieving severed tissue from within the subject is disclosed. The device has a support unit, a tissue severing snare system, and a tissue retrieving net system. The snare and net systems are carried by the support unit and may be inserted into the subject through an orifice or small incision and individually operated to sever and retrieve tissue. The snare system includes a snare, a snare actuator, and a snare deployment and retrieval assembly for transmitting motion between the actuator and the snare. The net system includes a net, a net actuator, a net deployment and retrieval assembly for transmitting motion between the net and its actuator and a net controller for assuring the net is fully opened when deployed.