Coating process
US5885647A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 20, 1997 |
| Grant date | Mar 23, 1999 |
| Priority date | — |
| Expiry date | May 20, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2/16
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A process for coating of an intraocular lens to impart tissue compatibility thereto, comprising the steps: a) priming said lens using a solution of a polyamine; b) coating the lens treated in step a) above with a solution of a periodate-oxidized polysaccharide selected from heparin, heparain sulphate, and chondroitin sulphate to stabilize said polyamine by covalent and/or ionical cross-linking; c) coating the lens treated in step b) above with a solution of a polyamine; and d) coating the lens treated according to step c) above with a solution of a periodate-oxidized polysaccharide selected from heparin, heparain sulphate, and chondroitin sulphate in the presence of a cyanoborohydride to convert formed labile Schiff's bases to stable secondary amines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.