Laparoscopic oximeter and protective method for reuse of portions of the laparoscopic oximeter

A method comprising:

• forming 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;
• accordion folding the interior and exterior walls of the sheath from the first open end to the second open end
• forming the interior and exterior walls to have continuous surfaces between the first and second open ends,
• adhering an adhesive layer to a first portion of the interior wall of the sheath;
• covering the adhesive layer with a removable adhesive liner;
• providing a contact area of the sheath at a second portion of the interior wall, wherein the second portion is opposite of the first portion;
• forming a tab on an edge of the interior and exterior walls at the first open end;
• forming the tab to unfold to have an unfolded configuration wherein a tab end of the tab extends from the first open end away from the second open end;
• forming the tab to fold along a fold line to have a folded configuration so that the tab is against the exterior wall of the sheath and the tab end extends past the second open end;
• and
• coupling a ring 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.