Probe cover for ear thermometer

A probe cover for an ear thermometer, comprising:

• a conical main body including a closed end and an open end;
• an annular elastomer connected to the open end of the conical main body;
• a flange connected to the annular elastomer, wherein the annular elastomer is arranged between the conical main body and the flange, and the flange has a first surface and a second surface opposite to the first surface;
• a plurality of convex rib structures wherein the convex rib structures are disposed on the flange and spaced apart from each other, and the convex rib structures protrude upwardly from the first surface;
• and
• a plurality of concave rib structures being disposed on the flange and spaced apart from each other, and are recessed from the first surface;
• wherein the convex rib structures are protruded in a first direction, and the concave rib structures are protruded in a second direction, and the first direction and second direction are in two opposite directions;
• wherein the first direction is a positive direction y, and the second direction is a negative direction y
• wherein the positive direction y is an upward direction perpendicular to the first surface toward the closed end of the conical main body, and the negative direction y is a downward direction perpendicular to the first surface.