Patent ID: 8936550
Filing Date: 2015-01-20
Classification: A61B

Abstract:
1. An eyelids opening device, comprising: a flexible flat upper ring configured to be applied in contact with a face while surrounding upper and lower eyelids, the flexible upper ring having a flexibility to be foldable in half as well as a self-restoring property; a flat lower ring configured to be inserted into a conjunctiva sac of the upper and lower eyelids; and an elastic sheet of a flexible tubular thin film located to extend from a face side to the eyelids conjunctiva sac, one end of the elastic sheet having a large diameter expanded state at a side attached to the upper ring to form a drape and another end of the elastic sheet having a smaller diameter expanded state attached to the lower ring, wherein an outside diameter at a smallest portion of the elastic sheet is substantially equal to or greater than an interpalpebral length between the upper and lower eyelids, and wherein the expansion of the ends of the elastic sheet causes a corresponding tension in the upper and lower rings and the elastic sheet thereby maintaining the eyelids in an open state as a closing force of the upper and lower eyelids is resisted.