Materials containing multiple layers of vesicles
US7329415B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2003 |
| Grant date | Feb 12, 2008 |
| Priority date | — |
| Expiry date | Mar 13, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P43/00
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention provides a composite material, preferably an ophthalmic device, more preferably a contact lens, which comprises a vesicle-containing coating including at least one layer of a vesicle and one layer of a polyionic material having charges opposite the charges of the vesicle. Such composite material can find use in biomedical applications, for example, a device for localized drug delivery and an in vivo analyte sensor such as glucose sensing contact lens. By lifting off the vesicle-containing coating from a substrate, a self-standing membrane (film) capable of encapsulating a wide variety of guest materials can be prepared. In addition, the invention provides methods for making vesicle-containing composite and film materials of the present invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.