Laparoscopic oximeter and protective sheath for the laparoscopic oximeter

A device comprising:

• a sheath comprising an interior wall and an exterior wall, wherein the sheath comprises a first open end and a second open end, opposite the first open end, the interior and exterior walls of the sheath are accordion-folded from the first open end to the second open end and each wall comprises a continuous surface between the first and second open ends,
• an adhesive layer, coupled to a first portion of the interior wall of the sheath;
• a removable adhesive liner, covering the adhesive layer;
• a contact area of the sheath at a second portion of the interior wall, wherein the second portion is opposite of the first portion;
• a tab coupled to an edge of the interior and exterior walls at the first open end, which comprises when unfolded, a tab end that extends from the first open end away from the second open end, and the tab when folded is folded along a fold line so that tab is against the exterior wall of the sheath, and the tab, extends in a direction toward the second open end, and extends past the second open end;
• and
• a ring coupled around the exterior wall nearer to the second open end than the first open end, wherein the ring comprises an elastic material to press the exterior wall in a direction towards the interior wall.