Endoscope for use with a disposable sheath

Abstract From the Canadian patent

Abstract of the Disclosure, An endoscope specially adapted for use with a disposable sheath having an outer casing and one or more internal channels. The endoscope includes a tip portion connected to a control handle through a flexible insertion tube. The insertion tube is formed by a braided wire tube covered by a flexible waterproof coating and surrounding a resilient D-shaped tube through which optical components for the endoscope extend. A longitudinally extending groove is formed in the braided tube to receive the channel(s). The groove extends perpendicular to, and makes contact with, a generally planar portion of the D-shaped tube so that the D-shaped tube can restrict deformation of …