Material to be worn on the eyeball
US6075066A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 5, 1997 |
| Grant date | Jun 13, 2000 |
| Priority date | — |
| Expiry date | Jun 5, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/043
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention provides semi-spherical materials to be worn on the eyeball, such as contact lenses for visual acuity correction or medical treatment use, cornea protecting materials, controlled drug release contact lenses and the like, which comprise, as a main component, a glycosaminoglycan existing in the living body as an extracellular matrix component of connective tissues and satisfy various requirements such as dimentional stability, transparency, surface water wettability, tissue compatibility, oxygen permeability and the like. In other words, the material to be worn on the eyeball has a shape of semi-spherical surface compatible in shape with the mammalian eyeball and has biological and surface-physical compatibilities with ophthalmic tissues and comprises, as a main component, a substantially transparent photocured crosslinked-glycosaminoglycan obtained by allowing photoreactive groups covalently bonded to a glycosaminoglycan to crosslink mutually by photoirradiation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.