Speculum Device and Method of Use

原文（中国語）

A speculum may include an insertion portion coupled to a handle, the insertion portion comprising a non-expandable proximal shaft and an expandable distal region, the distal region having a distal region length l that is less than 50% of a full-length L of the insertion portion. The speculum further includes a deployment mechanism operably coupled to the distal region, wherein the proximal shaft comprises a first lumen configured for the passage of an endoscope and a second lumen configured for the passage of an instrument, wherein the deployment mechanism controls the movement of the expandable distal region between an open configuration and a closed configuration. In the closed configuration, a maximum width w of the distal region approximates a diameter D of the proximal shaft.