Collagen-based auxiliary agent for ophthalmic surgery
US6177544A · kind A · utility
43Cited by
3References
6Claims
0Family size
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Key dates
| Filing date | Apr 16, 1999 |
| Grant date | Jan 23, 2001 |
| Priority date | — |
| Expiry date | Apr 16, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S128/08
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
An auxiliary agent for ophthalmic surgery is based on collagen and, after the completion of surgery, undergoes a lowering in viscosity, and thus can be easily removed. This agent is a neutral solution of collagen which is transparent at a neutral pH and has a denaturation temperature below the intraocular temperature, or a derivative thereof. The agent has a visual light transmission at 400 nm of at least 90% of that before the denaturation, when solution is heated to cause denaturation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.