Patent ID: 7905830

Claim:
A flexible sheath adapted to receive an endoscope, the sheath having substantially no torsional stiffness, wherein the sheath has an inner surface and an outer surface, and wherein the inner surface is textured, the inner surface having a roughness average value Ra of less than about 500 micro inch, wherein the inner surface has a coefficient of static friction of less than about 1.0, wherein the inner surface has a coefficient of sliding friction of less than about 1.0; a handle associated with a proximal end of the sheath; a flexible track joined to the outer surface of the flexible sheath, the track extending distally from the handle and the track extending along at least a majority of the length of the flexible sheath; and a strap member for biasing the endoscope distally with respect to the handle, strap member extends from the handle and forms a loop extending around a portion of the endoscope comprising an accessory channel port, wherein the strap member is engaged relative to the handle and relative to a proximal portion of the endoscope.