A punctum plug comprises a distal tip for anchoring the punctum plug in an implanted position in the lacrimal drainage system of the eye, a proximal cap that remains exposed in the eye in the implanted position, and a body connecting the distal tip to the cap. The distal tip includes a plurality of longitudinal...http://www.google.es/patents/US7862532?utm_source=gb-gplus-sharePatente US7862532 - Punctum plugs having insertion guides and strengthening beams
Punctum plugs having insertion guides and strengthening beams
