The evenly spaced broken lines indicate portions of the medical thread that form no part of the claimed design. The dash-dot broken lines indicate boundaries and form no part of the claimed design. The portions of the medical thread shown broken away, using two parallel wavy lines, indicate indeterminate length and form no part of the claimed design. The shading is provided merely to represent contours of the design and does not connote the character of the surfaces such as any specific texture, material, gloss, translucence, transparency, surface treatment, or surface decoration.